The KOCLIKO platform is enhanced with a new feature: 3D building visualization directly within the manager’s interface. This 3D KOCLIKO allows for a more intuitive representation of a residence and enables observation of the thermal situation dwelling by dwelling.

Thanks to this new interface, managers and operators can visualize the temperature of dwellings directly at the building scale. A simple color code makes it possible to immediately identify colder dwellings, those overheating, and those within the thermal comfort zone. This approach offers a new way to interpret energy data and better understand a residence’s thermal behavior.

A 3D Model Based on the Building’s Digital Model

The 3D KOCLIKO relies on the building’s digital model, which describes its structure and internal organization. This model contains detailed information on the various elements that make up the residence, such as floors, dwellings, rooms, and architectural volumes.

From this data, the platform generates an interactive 3D model of the building directly within the Kocliko interface, allowing for intuitive navigation within the residence and visualization of dwelling positions.

Visualize the Temperature of Each Dwelling

The 3D KOCLIKO is not limited to building representation. It also integrates data from sensors installed in dwellings, particularly ambient temperature measurements.

Each dwelling represented in the model is associated with the corresponding sensors in the KOCLIKO platform. The collected data is then displayed directly in the 3D visualization. This makes it possible to observe the temperature of each dwelling at the building scale and quickly compare thermal situations between apartments.

This representation also facilitates the identification of atypical situations, such as an overheating dwelling or an insufficiently heated apartment.

A More Intuitive Reading of Energy Data

To facilitate interpretation, dwellings are colored according to their temperature. A color code ranging from blue to red allows for immediate identification of colder or warmer areas within the building.

This spatial representation transforms the way energy data is observed. Where analysis traditionally relied on tables or graphs, 3D KOCLIKO now allows for direct visualization of information within the building’s structure. Data thus becomes much simpler to understand and analyze.

A New Analysis Tool for Technical Teams

By combining the building’s digital structure with data reported by sensors, 3D KOCLIKO offers a new way to explore the thermal performance of residences.

Technical teams can thus quickly visualize the thermal situation of a building, understand any discrepancies between dwellings, and more easily analyze the overall behavior of the building. This interpretation facilitates the identification of abnormal situations and allows for more effective intervention when necessary.

With this feature, KOCLIKO continues its objective: to make energy data more readable and operational to better understand buildings and improve their management.

At the beginning of this year, Procivis gathered its entire ecosystem for its New Year greetings ceremony.

An important event for the housing sector, serving as both a review of the past year and a time to project toward future challenges.

Present on this occasion, we had the pleasure of participating in these exchanges, which allowed us to look back at the progress made, identify the structural challenges that remain, and reiterate the importance of collective mobilization to sustainably meet housing needs.

A speech resolutely focused on action and optimism

On the occasion of his greetings, Yannick Borde delivered a speech resolutely focused on optimism, highlighting Procivis’s desire to continue its role as a committed housing player, support the sector’s transformations, and strengthen its social utility.

In a context of lasting tension in the housing market, he recalled an essential point:

the recognition, at the highest level of the State, of the scale of housing needs is now established. But beyond observations and announcements, the challenge is clear: act collectively, accelerate, produce, and succeed together.

His intervention also highlighted a strong signal for the future of the sector:

for the first time, the entire housing industry has mobilized in a united manner. Overcoming traditional oppositions—between social and private, old and new, owners and tenants—now appears to be an indispensable condition for the sector’s resilience.

Because if one branch weakens, the entire housing chain suffers the consequences.

The message is clear: housing is a collective issue that calls for collective responses.

French innovation at the heart of the exchanges

This ceremony was also an opportunity to recall the key role of innovation in the transformation of the real estate sector.

In this regard, Éric Vorger, CEO of Kocliko, spoke to thank the Procivis network for allowing French technology companies to actively contribute to the evolution of collective housing.

He stressed the importance of bringing forth, supporting, and deploying innovation, particularly when it addresses concrete issues of energy performance, comfort, and sustainable building management.

During his intervention, Éric Vorger revisited the fundamentals of the Kocliko approach:

• a commitment to results undertaken,

• the deployment of solutions in more than 31,000 homes,

• and a strong conviction: energy performance can only be sustainable if it is equitable.

Performance that aims to guarantee consistent comfort, limit situations of overheating or discomfort, and ensure better control of service charges for all occupants.

Making the collective a lever for sustainable transformation

Throughout the speeches, a common thread emerged:

in a sector facing major social, environmental, and economic challenges, no response can be isolated.

The Procivis greetings ceremony served as a reminder of how much cooperation between stakeholders—cooperatives, landlords, companies, startups, local authorities, and institutions—is now essential to build sustainable and operational solutions.

In conclusion

The Procivis network greetings ceremony was much more than a formal institutional event at the start of the year.

It constituted:

• a time to reflect on the past year,

• a moment of clarity regarding the challenges that remain,

• and above all an invitation to continue collective action.

At Kocliko, we are proud to have participated in these exchanges and to contribute, alongside Procivis and the entire ecosystem, to sustainably evolving the performance and equity of collective housing.

2025 will remain a foundational year for Kocliko. From product innovation, large-scale deployments, national and international recognition, to team strengthening, this retrospective traces the highlights that have marked our trajectory.

A month-by-month look back at a year focused on impact, energy performance, and collective commitment.

Kocliko 2025 Retrospective: Month by Month

January • Launch of the Results-Based Commitment Offer

The year begins with a strong strategic turning point: the launch of our results-based commitment offer. A clear promise made to our clients: measured, monitored, and verified energy savings, supporting more efficient and effective collective heating management.

February • Kocliko at the Data4NRJ Exhibition

In February, Kocliko participates in the Data4NRJ exhibition, a key event for data and energy stakeholders. It’s an opportunity to highlight our data-driven approach, digital twin technology, and AI for managing collective boiler rooms.

March • Key Contracts Finalized

March marks a key milestone with the finalization of major contracts, notably with OPAC de l’Oise, OPHÉOR and Grand Bourg Habitat.

These collaborations with leading social housing providers confirm the robustness of the Kocliko solution, its ability to adapt to diverse property portfolios, and its concrete impact on the energy performance of collective housing, on a large scale.

April • DEVOXX France: Innovation at the Heart of Tech

Our technical teams gather in Paris for DEVOXX France, a benchmark event for developers. A highlight dedicated to technological watch, software innovation, and continuous skill development.

May • Recruitment and Team Growth

In May, Kocliko launches a recruitment campaign to support the acceleration of upcoming projects and deployments. This highlight is also marked by a team seminar in Paris, bringing together all employees around the challenges of growth, innovation, and energy performance, within a strong collective dynamic.

June • Our Energy Managers Team Finally Boosted!

Growth materializes with the arrival of new talent: our team of Energy Managers is strengthened by welcoming 3 new talents, ensuring ever more precise monitoring of energy performance on the ground.

July • Start of Mass Deployments

July marks a major milestone: the start of large-scale deployments of the Kocliko solution. A new dimension for our operations, serving thousands of homes, all under the sun.

August • Team Seminar and Toulouse Olympiads

Even in summer, team spirit remains at the heart of our DNA. August is punctuated by a team seminar and Olympiads in Toulouse, essential moments of cohesion, sharing, and strategic reflection, notably thanks to dives in the pool.

September • First Booth at the USH HLM Congress

In September, Kocliko held a booth at the USH HLM Congress for the first time, marking an important step in terms of visibility and integration within the social housing ecosystem.

This event was punctuated by the visit of numerous partners, as well as key clients such as in’li, Promologis, and OPAC de l’Oise, with whom we were able to discuss energy performance challenges, boiler room management, and energy sobriety.

The congress also provided an opportunity to innovate in our exchange formats: videos broadcast directly at the booth allowed for remote dialogue with OPHEOR, strengthening ties and feedback despite the distance.

October • Solar Impulse Foundation Label

In October, Kocliko obtains the Solar Impulse Foundation label, an international recognition awarded to solutions that are both clean, efficient, and economically viable.

Awarded by a committee of independent experts, this label distinguishes innovations capable of addressing environmental challenges without compromising performance or profitability.

For Kocliko, this certification recognizes a unique approach to energy management in collective buildings, based on material sobriety, field data, digital twin technology, and artificial intelligence. It also confirms the solution’s ability to generate measured and verified energy savings, without major works, while improving occupant comfort.

This label strengthens Kocliko’s credibility with landlords, operators, and institutional partners, and is fully aligned with our mission: to accelerate the energy transition of collective housing on a large scale.

November • Victory at the Procivis Innovation Trophy

In November, Kocliko wins the Procivis Innovation Trophy at the RENT exhibition, a benchmark event for real estate and proptech innovation. This distinction rewards an innovative, concrete, and operational solution designed to address the energy, economic, and social challenges of collective housing.

Awarded by a jury composed of major players in housing and real estate, this trophy highlights Kocliko’s ability to leverage technology for energy performance, relying on data, artificial intelligence, and a results-oriented approach. It also emphasizes the solution’s real impact on the ground: measured consumption reduction, improved occupant comfort, and simplified management for operators.

This recognition strengthens Kocliko’s legitimacy as an innovative player in the energy transition and confirms the relevance of its model to sustainably support social landlords and property managers.

December • Year-End Seminar and 2026 Projection

The year concludes with a year-end seminar, a key moment for collective gathering and reflection. This highlight allowed us to review the achievements of 2025, share field feedback, and measure the progress made, both in terms of deployments and energy impact.

Beyond the review, this seminar was primarily forward-looking, with a clear projection of 2026 ambitions: continued large-scale deployments, strengthening of management and support offers, and a firm commitment to further amplify Kocliko’s contribution to the energy transition of collective housing. A unifying moment, full of meaning and momentum to approach the future together.

Onward to 2026!

Building on this momentum, Kocliko approaches the coming year with ambition and commitment. 2026 promises to be marked by several major industry events, starting with Énergie Meeting, UNIS Mouv’, then the HLM Congress, all key appointments for exchanging with collective housing and energy stakeholders.

These highlights will accompany the continuation of large-scale deployments, the strengthening of our results-based management offers, and the development of new services designed to simplify the daily lives of landlords and operators.

The coming year will be resolutely focused on action, fieldwork, and collaboration. Onward, together.

Kocliko is officially certified “Solar Impulse Efficient Solution”. An international recognition that validates its energy performance, low LCA impact (2 devices vs. 5), and key role in the collective heating transition.

Kocliko has just received the prestigious “Solar Impulse Efficient Solution” label, awarded by the Solar Impulse Foundation.

This label distinguishes technologies capable of delivering real environmental benefits while remaining economically viable, a rare and demanding balance.

Already adopted by more than 31,000 housing units, the Kocliko solution has established itself as a major innovation for sustainably reducing energy consumption in collective buildings.

Validated technological innovation: simple, effective, no radiator access required

Unlike traditional systems (radiator modules, wiring, heavy installation…), the Kocliko solution relies on two temperature sensors per housing unit, without intervention in the heating circuit.

Simple installation:

• no radiator access
• no plumbing
• no intrusive work

Measured results:

• 21% energy savings on average,
• with maintained comfort quality.

This material simplicity was one of the factors in obtaining the label.

Material efficiency: significantly lower LCA impact (2 devices vs. 5)

An aspect particularly valued by the Solar Impulse Label expert committee:

👉 the reduction of environmental impact across the entire life cycle (LCA).

The difference is clear:

Fewer devices means:

• less raw materials,
• less transportation,
• less maintenance,
• less electronic waste at end of life.

➡️ Kocliko optimizes energy without multiplying equipment.

This is a major differentiating point of the label.

Tangible benefits for landlords, operators, and occupants

The label recognizes Kocliko’s ability to create a triple impact:

1. Environmental

• –21% heating energy
• reduced CO₂ emissions
• minimal material footprint
• continuous AI-driven optimization

2. Economic

• immediate savings
• rapid installation
• reduced operating costs
• no intrusive work

3. Social

• stabilized comfort
• improved equity through true dynamic thermal simulation
• data transparency

Toward mass adoption

With more than 31,000 housing units by the end of 2025, Kocliko is positioned as:

• a credible alternative to traditional heat cost allocation,
• a solution compatible with European climate objectives (EED/EPBD),
• an essential management tool for landlords and operators.

The Solar Impulse Label certifies this trajectory.

Receiving the “Solar Impulse Efficient Solution” label marks a new milestone for Kocliko.

It confirms that it is possible to massively improve the energy performance of buildings, while reducing the material and environmental footprint of deployed solutions.

👉 Clean technology.
👉 Demonstrated impact.
👉 A solution ready for scale.

And now officially recognized among the most efficient innovations for the climate.

On 5 November 2025, KOCLIKO won the Social and Environmental Impact Award presented by Procivis at the RENT Trade Show.

This recognition highlights a unique heating innovation in France, capable of immediately reducing energy consumption in multi-unit residential buildings while strengthening fairness between tenants.

This award, presented live on Radio Immo, recognises solutions with a demonstrated social and environmental impact that are useful, replicable, and aligned with the values of the Procivis group.

A heating innovation selected from 50 applications

Organised by Procivis, the award evaluated more than 50 projects before selecting 9 finalists and then 2 solutions for the final round.

The jury’s criteria:

• real usefulness for residents and landlords,

• innovative nature,

• ability to be deployed at scale,

• measurable social and environmental impact.

KOCLIKO stood out thanks to a smart heating innovation, already deployed in more than 31,000 apartments, delivering an average of 21% energy savings from the very first year.

“Lowering heating means both increasing purchasing power and reducing the carbon footprint of buildings,” explained Ismail Rezgui, Sales Director at KOCLIKO, live on Radio Immo.

Why did KOCLIKO win over the Procivis jury?

1. Smart, one-of-a-kind control of collective heating

KOCLIKO combines :

• temperature sensors in the dwellings,

• a control unit in the boiler room,

• a dynamic thermal twin (Digital Twin).

This approach enables:

• optimised balancing,

• intelligent real-time control,

• early detection of malfunctions,

• an immediate reduction in consumption.

A heating innovation recognised for its precision and efficiency.

2. Truly fair individual billing of heating costs

Today, KOCLIKO is the only solution capable of correctly calculating location coefficients through a true dynamic thermal simulation of the building.

Results :

no tenant is penalised or favoured based on the position of their dwelling (gable end, top floor, north/south-facing…).

A major step forward, in keeping with Procivis’s social DNA.

3. An unprecedented results-based commitment in the marke

KOCLIKO contractually guarantees:

➡️ If the energy savings do not cover the cost: the occupant pays nothing.

This guarantee, rare in the field of collective heating, made an impression on both the jury and the audience.

4. Proven impact: up to 27% savings in the first year

Example : Résidence Bollier (Lyon)

• 27% savings,

• i.e. €35,000 saved,

• around €300 per dwelling,

• for an average subscription of €50 per year.

A spectacular ROI highlighted during the Procivis event.

A Procivis award that confirms KOCLIKO’s position as a major player in heating innovation

As Procivis pointed out on Radio Immo:

“The housing sector must reinvent itself. Innovation in collective heating and energy is essential to meet the challenges of tomorrow.”

This award serves to highlight:

• immediate social impact (purchasing power, fairness),

• environmental impact (fewer emissions and less waste),

• operational impact (better performance and longer equipment lifespan).

KOCLIKO already supports:

• social housing providers,

• property management companies,

• heating operators, as part of an approach focused on energy efficiency and continuous improvement.

Conclusion: a collective victory for the energy transition in housing

By winning the Procivis award, KOCLIKO confirms its position as France’s leader in heating innovation for multi-unit housing.

This accolade rewards more than 10 years of R&D, patented technology, and a clear mission:

to reduce consumption, improve fairness, and make the energy transition accessible to all.

Every year, around October 15th, most landlords kick off the heating season.

This symbolic date marks the start of a collective challenge: providing enough heat to ensure tenants’ comfort, while avoiding energy waste and overconsumption.

Between rising energy prices, regulatory requirements, and thermal comfort concerns, the winter period confronts managers with a delicate balance: keeping heating under control without compromising occupant satisfaction.

And even before we get into technology, there are simple, effective measures to start the season off right.

Here, our Kocliko Energy Managers share 5 practical tips to support the start of the heating season, then explain how Kocliko technology makes it possible to go further in energy efficiency and performance.

1️⃣ Putting off the heating a bit… naturally

Holding off on turning the radiators back on often helps extend the savings built up over the summer.

The body adapts quickly: a sweater, a blanket, or a throw are sometimes worth a few degrees of heating!

💡 Every day gained before turning the heating back on means energy saved, with no loss of comfort.

2️⃣ Optimizing control on the manager’s side

Before the season kicks off, managers play a key role:

• Checking the boiler room control settings,

• Insulating the pipes in unheated areas,

• And scheduling a power flush if necessary.

After an energy retrofit (for example, external wall insulation done over the summer), remember to reconfigure the control settings: the building’s needs have changed!

3️⃣ A few alternatives depending on nuance:

Occupants can play their part in energy moderation too:

• Keep windows and doors closed during the heating season,

• Open the shutters during the day to capture solar heat 🌞,

• Close them at night to keep the heat in,

• Set the thermostats to 19°C in living areas and 17°C in bedrooms.

Simple steps, but decisive ones for limiting heat loss and stabilizing indoor temperature.

4️⃣ Lowering the temperature intelligently

Lowering the heating slightly, without sacrificing comfort, remains one of the most effective levers:

• 16-17 °C at night,

• 14–15°C during extended absences.

These adjustments deliver real savings while maintaining stable comfort.

💡 On average, –1°C = –7% energy consumed.

5️⃣ Measuring, tracking, and adjusting continuously

Beyond the initial actions and settings, performance comes down to monitoring.

Measuring temperatures, identifying drifts, and adjusting continuously helps avoid overconsumption and ensures consistent comfort throughout the winter.

How Kocliko helps you go further

Kocliko combines connected sensors, thermal modeling (digital twin), and human support to help landlords and operators:

• track consumption and temperatures in real time,

• spot overheated dwellings,

• automatically adjust the controls,

• and quantify the energy savings achieved.

Deployed in over 31,000 homes, Kocliko’s patented, LNE-certified technology delivers an average of 21% energy savings while improving tenants’ thermal comfort.

The start of the heating season is the perfect time to review your practices and adopt the right habits.

With a few simple adjustments and smart control, you can heat better without heating too much.

And with Kocliko, this energy moderation becomes simple, measurable, and lasting.

The Energy Performance Certificate (EPC) is a crucial tool in France for assessing the energy performance of buildings. Essential for selling or renting, the EPC significantly influences a property’s appeal and value, and is now at the heart of new environmental regulations.

Why is the EPC so cru

Why is the EPC crucial?

The EPC measures a home’s energy consumption and CO2 emissions, providing a clear view of its environmental impact and energy efficiency. This information is crucial for both owners and prospective buyers or tenants, directly influencing the decision to invest in real estate.

Impact of the EPC on property regulation:
Since 2023, French legislation has prohibited the rental of extremely energy-intensive homes (rated G) in high-demand areas and will extend these restrictions to other energy classes in the coming years. These measures aim to encourage energy renovations and improve the quality of France’s housing stock.

Collective EPC: New obligations for 2024 and beyond
Condominiums are subject to increasing obligations to carry out a collective EPC, in order to strengthen the energy performance of multi-unit residential buildings.

• From January 1, 2024, condominiums with more than 200 units must carry out an EPC at building level.
• From January 1, 2025, this obligation will extend to condominiums with between 50 and 200 units.
• From January 1, 2026, condominiums with fewer than 50 units will also be required to comply with this requirement.

The Kocliko solution – An EPC in one click

KOCLIKO’s Heating Cost Allocation (HCA) solution is based on a digital twin of the building, including all of its thermal characteristics.

(Find out more about our solution here)

Recently, our partner IZUBA énergie implemented the 3CL method (Calculation of Conventional Dwelling Consumption) used for the EPC in the software we use to model buildings (Pleiades software).

An opportunity to meet the growing demand from our clients and partners who wanted to leverage this precise data for the EPC.

Thanks to this advancement, and with several members of our team now certified as energy assessors, producing an EPC becomes instantaneous for any building equipped with our HCA solution!

A simple, high-quality, transparent EPC

There is no longer any need to use multiple service providers to collect the same information. This centralized approach is not only more cost-effective, but also simpler. Our process for creating the digital twin for HCA is rigorous and ensures the quality of the underlying data, such as thermal characteristics and the geometry of the dwellings.

The digital twin is shared transparently with the building manager, making all information easy to verify. This puts an end to the lack of transparency and the mysterious variations often seen from one assessment to another, ensuring greater clarity and consistency for building energy management.

Exclusive launch offer

To celebrate, KOCLIKO is offering an exceptional launch offer: a free collective EPC with any installation of our HCA solution in 2024.

To take advantage of this exclusive offer, sign up on our website or contact our sales team for more information.

Your energy efficiency expert

With more than 16,000 homes equipped in 2023, and this figure steadily increasing, KOCLIKO demonstrates its recognized expertise in building energy efficiency.

Stay tuned for KOCLIKO’s future innovations, which promise to continue supporting you in managing your buildings’ energy performance.

In this article, you will find:

1. The principle of Individual Heating Cost Allocation
2. Homes’ location: a matter of fairness
3. Examples of COSTIC “location coefficients”
4. What difference does the method used to calculate location coefficients make?

In summary

To reach the same indoor temperature, homes consume more or less heating depending on their location within the building (floor, orientation, sunlight exposure, exterior wall surface areas, etc.).

When it comes to allocating heating costs, a home’s location within the building can be a source of controversy, particularly in social housing.

Here are a few excerpts from tenant association statements on the subject:

“In other words, apartments facing due south or due north, surrounded by other apartments (and therefore partly heated by them), or located on the top floor on the gable end will be treated the same way. Such a measure is unfair and will penalize occupants of ‘poorly located’ homes, whose bill could increase by 44%! This is why the CLCV is calling for coefficients to be determined and set in order to take into account homes that are thermally disadvantaged (gable end, north-facing…); (1)

“The CSF reminds us that an “excessive individualization of the allocation of heating costs carries serious risks of unfairness, particularly in the social housing stock. Indeed, when housing is allocated, “the tenant does not choose, for example, to live in a north-facing apartment or on the top floor,” the confederation notes.” (2)

“For the CNL, under the guise of the laudable goal of saving energy, this measure simply calls the principle of solidarity into question. Indeed, sharing the heating bill makes it as fair as possible for residents because it takes into account differences in location and the difficulties in heating that, for example, an occupant of a north-facing ground-floor apartment faces compared with an occupant on the 2nd floor, heated by neighbors and facing due south. This measure will therefore penalize many residents and will very significantly increase their bill.” (3)

“That is to say, a tenant will be required to pay more or less for their heating costs depending on the characteristics of their home, and not on their own energy consumption habits” (4)

“If the objective of the regulations is to establish billing as close as possible to personal consumption, this assumes that the heating system is properly balanced, meaning that all radiators in the building heat evenly (…) Furthermore, the choice of an apartment as part of a purchase or even a rental will be affected depending on the property’s geographic orientation and its floor. A north-facing home located under an uninsulated roof is in fact thermally disadvantaged, and will therefore have to consume more heating to restore the indoor temperature.” (5)

⚖️ KOCLIKO demonstrates that it is possible to individualize heating costs and encourage sobriety, without penalizing poorly located homes!

II) Homes’ location: a matter of fairness

Depending on their position in the building, some homes consume a lot of heating to be comfortable, while others consume little.

Heat gains and losses depend on the “location”: floor, orientation, sunlight exposure, exterior wall surface areas, etc.

By moving from area-based billing to actual-consumption billing, some homes will benefit and others will be disadvantaged. For fear of being disadvantaged, many residents strongly resist the rollout of IFC. This partly explains why only 30% of the eligible stock is equipped to date.

These fairness issues are a priority in a context of a sharp rise in energy prices and, consequently, growing attention (and tension) around heating charges. Any sense of unfair treatment would be likely to damage relations between residents, and between residents and the property manager.

It is therefore customary to correct for location differences, particularly in social housing since tenants do not choose their home.

In condominiums, the general meeting generally chooses not to correct for location differences. Co-owners consider it normal that a south-facing home (purchased at a higher price) is advantaged when it comes to heating charges.

III) Examples of COSTIC “location coefficients”

A COSTIC guide (Scientific and Technical Committee for the HVAC Industries (6)) from 1991 sets out the principle of “location coefficients” and proposes as an example the summary values below:

The guide clearly states that “where possible, the collective building’s thermal studies are used to determine the location coefficient”.

With “traditional” Thermal Energy Meters and Heating Cost Allocators (HCA), this thermal study is never carried out because it is too costly.

KOCLIKO is the only provider offering a systematic thermal study to calculate location coefficients.

This study is included “by default” in the new HCA technology that uses indoor temperature measurement in homes and a digital twin of the building.

IV) What difference does the method used to calculate location coefficients make?

So, ultimately, what is the difference between the “COSTIC coefficients” and the coefficients calculated on a bespoke basis for each project using a thermal study?

KOCLIKO compared 441 homes across 25 residences. For these 441 homes, the coefficients were systematically calculated using both methods: the rule provided as an example by COSTIC, and the exact thermal study carried out using the digital twin.

The average error is 18%, which represents an error of €180 on an average heating bill of €1,000.

In some cases, the error reaches 120%, i.e., €1,200 on an average bill of €1,000.

An example to understand

In this very typical and representative residence, the COSTIC coefficient is -7% for home 1. (7)

Explanation:

• Home 1 is on the ground floor on an uninsulated slab. It has much higher heat losses than average.
• A significant portion of its walls is adjacent to an unheated corridor.
• Even though it faces south, being on the ground floor with trees and nearby buildings means it receives little solar gain.

Result:

The COSTIC coefficient is 47% too low. On an individualized share of €1,000, this represents an error of €470!

The resident of this home has a real interest in having the coefficients calculated correctly; otherwise, they will be heavily penalized.

It is also important to be able to justify these values, thanks to a transparent, well-substantiated thermal study, to avoid disputes within the residence.

In the event of works

If works are carried out at the building level, the digital twin is updated and the location coefficients are recalculated.

In our example, insulating the underside of the ground floor slab with 7 cm of insulation brings home 1’s coefficient from 54% down to 20%.

Home 1 benefits from the works, as do the other homes.

A form of “thermal solidarity” is therefore maintained within the building, along with a shared interest in improving it.

COSTIC coefficients, on the other hand, never change. Corrections are assigned “for life”.

Another example to understand (even better)

In summary

Implementing IFC suddenly changes a rule that has always been in place in the residence. Imagine two households occupying two homes of identical floor area, heated to the same temperature. With the shares (tantièmes), they paid the same price, but with IFC their bill may suddenly diverge from half to double, due to their home’s more or less favorable location. This abrupt change in the rule can understandably be difficult to accept—especially for tenants in social housing who do not “choose” their home. Tenant associations have clearly identified this issue, which has been their main objection to IFC.

“Location coefficients” were invented to address this break in fairness by correcting for differences in homes’ locations. COSTIC proposed values for these coefficients, but only as examples, and specified that the correct method was to carry out a thermal study building by building.

This study has never been carried out to date due to its complexity and cost. But the new HCA technology using indoor temperature changes the situation, since a thermal simulation model of the building is systematically produced. Calculating the location coefficients is the natural next step.

When comparing COSTIC location coefficients with those resulting from a genuine thermal study, the differences are considerable. KOCLIKO carried out a comparative analysis of 441 homes across 25 residences. The average error is 18% (€180 on an average heating bill of €1,000), and in some cases it reaches 120% (i.e., €1,200 on an average bill of €1,000).

Correctly calculating location coefficients addresses two challenges. Fairness: tenants pay more or less in charges based on their usage, not based on their location within the building; and transparency: the property manager is able to explain the location coefficients applied, supported by a rigorous thermal study. Given the amounts involved in heating charges, there is no doubt these challenges must be taken seriously.

Sources:

(1) IFC, CLVG, 2016

(2) Individualized heating costs: measuring what will be expensive for tenants, SUD OUEST, 2016

(3) IFC and inequality, LA CNL, 2016

(4) Allocation of heating costs, NATIONAL CONFEDERATION OF HOUSING, 2016

(5). Press release IFC, LA CGL, 2016

(6) COSTIC Guide, 1991

(7) Based on the values proposed by COSTIC, the coefficient for this home is calculated as follows: ground floor + corner + south => -10% -10% +5% = -15%. The average for the homes being -8%, this represents a correction of -7%.

(8). Note: If works are carried out by an owner, such as replacing their windows, the savings are theirs alone and the location coefficients are not recalculated.