Home / Saving Costs by Boosting Energy Efficiency at a School Building in France

Our client

Building type: School Building

Client Name: Inyus for Gohypré Primary School

Location: Thaon-les-Vosges, France

Building parameters: 3 floors, 39 rooms, size of 3190m2

Partner: Inyus

“We achieved amazing cost savings fast during the initial winter season following the installation of the smart energy system, and maintained a downward trend in expenses during the subsequent season as well.”

Project owner

About Inyus

Inyus specializes in providing connected heating solutions tailored specifically for tertiary buildings in France, including those in the educational and hospitality sectors. The company focuses on enhancing the energy efficiency of these buildings by offering individual heating control of the rooms based on the occupancy and the specific user needs, resulting in a significant reduction in costs. Their tailored solutions not only preserve energy and create savings but also protect the environment by reducing the CO2 impact while at the same time maintaining a pleasant and comfortable indoor environment for the users. Inyus solutions are eligible for the BAT TH 104 Sheet, BAT TH 116 Sheet, and the BACS decree.

By integrating Inyus' advanced smart solution with MClimate LoRaWAN IoT devices, hotels, and educational institutions can improve their energy efficiency and reduce costs, leveraging a customized approach.


Gohypré Primary School was facing a significant challenge linked to the inefficiency of its heating system, which resulted in substantial energy costs. The initial heating system, based on a gas boiler, was configured to heat the radiators of the entire building only from 6 a.m. to 6 p.m., Mondays, Tuesdays, Thursdays, and Fridays, outside school holiday periods, and this, without zone differentiation. Areas of the building such as the canteen, infirmary, restrooms, and corridors were heated without any adaptive control based on actual occupancy. Gohypré Primary School was therefore looking for a solution to reduce its energy costs and improve the sustainability of its establishment.



To address the issue the school decided to digitalize its heating system relying on Inyus as a partner who analyzed the existing situation and found out that the school's energy consumption is very high, with an average of 190 kWh per unified heating degree day or 171 kWh/m². A smart heating solution with 117 MClimate Smart Radiator Thermostats connected to the Inyus BMS was implemented during the heating season December 2022 - February 2023 allowing the regulation of the room temperature individually based on the occupancy, preventing the heating of unoccupied rooms. They’ve also set a regime for maintaining 20°C when occupied and 16°C when the rooms are empty. Thanks to Vicki's wide compatibility with existing radiators, the installation process was fast and there was no need for any professional assistance.

To be more precise for the period December 2021 to February 2022, the average energy consumption ratio in the school in kilowatt-hour (kWh) per unified degree-day (UDD) was 196.65. On the other hand, for the period from December 2022 to February 2023, the average ratio was 135.65 kWh/DJU, a significant drop of 31% between the two periods. The data for the 2023/2024 season is still analyzed and processed but a clear trend toward reducing energy expenses is evident.

December (in kWh/DJU) January (in kWh/DJU) February (in kWh/DJU) Average (in kWh/DJU)
















31% reduction

of the heating costs

99% compatibility

with old radiators

Up to 10 years

of battery life


within 24 hours


Products in this case study

Vicki LoRaWAN® Smart Radiator Thermostat

Vicki LoRaWAN is a radiator thermostatic valve fully compliant with the LoRaWAN standard. It is the perfect choice for large-scale projects as it offers amazing battery life, RF performance and no maintenance for years as well functionalities such as Child Lock, Detection of opened windows and much more.

Recommended products

MClimate Wireless Thermostat LoRaWAN®

MClimate Wireless Thermostat is a stand-alone thermostat powered entirely by solar energy using an organic solar panel. The device features a 2.9" e-ink screen, sensor for movement (PIR), temperature and humidity sensor, LUX sensor and 3 buttons. The user can change the target temperature and see current indoor conditions. The device sends an uplink after any event as well as periodically.

MClimate Vicki Anti-vandal protective case

Protect your Vicki from tampering, vandalism and theft with our robust anti-vandal cover.

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