Save heating costs with IREWA – efficient heating on demand
Why heating on demand is the most effective way to save on heating costs
The key to saving energy with your fast-reacting IREWA heating system is to avoid constant heating. Instead, use a “heating on demand” strategy.
How to do it:
Use a programmable thermostat or smart model: This is the best way to save on heating costs, as everything runs automatically.
Set the temperature for nighttime and when you are away:
- At night or during longer absences (e.g., vacation): Set the temperature to 17-18 °C.
- When you are away for more than 1 hour (e.g., shopping or workday): Lower the temperature by 2-3 °C.
Plan your heating phase:
Program the heating system to start warming the room 30-45 minutes before you want it to be warm, e.g., before waking up or when heading home.
Important note:
- To prevent condensation, the temperature should never be set below 15 °C. A damp room requires much more energy to heat, so 17 °C is the absolute minimum for optimal efficiency.
By following this on-demand heating strategy, you fully leverage the fast response time of your IREWA system and achieve the lowest possible energy consumption.
Why the heating on demand principle works
Less heat loss at lower temperatures:
The amount of heat lost through walls and windows increases with the temperature difference, or Delta T (ΔT); between the inside and outside. Lowering the room temperature when it’s not in use reduces this difference, saving energy. Reheating the space later requires less energy than what was saved during the cooler period.
Fast response = real savings:
Conventional water-based systems heat large floor masses (usually at least 6 cm thick). While this stores a lot of heat, it leads to system inertia and continuous heat losses.
Your IREWA advantage
- Heat is generated directly in the room (not in the basement).
- A significantly smaller heat storage mass is used (floor covering).
- Full heating capacity is delivered within minutes, instead of taking hours.
- The thermostat automatically adjusts for external influences such as sunlight, the number of people in the room, etc.
- Compared to central heating systems: no losses from transport, transfer, or storage, and minimized regulation losses.
- The thermostat continuously monitors the room temperature and only heats when the room temperature is lower than your set desired temperature.
This allows for true on-demand heating — no continuous operation required.
Additionally, radiant heat ensures a comfortable indoor climate even at slightly lower air temperatures, allowing for further savings without sacrificing comfort.
Our IREWA thermostat can help you successfully implement the strategy of heating on demand.
It has a low hysteresis of just 0.5 K, a sensitive temperature sensor, and can be controlled via touch, programs, or remotely.
You can also track the energy consumption of each room – the IREWA thermostat displays your consumption data in weekly, monthly, and annual reports, so you can easily check how well your energy-saving strategy is working.
How good is the IREWA Carbon underfloor heating compared to a heat pump? We keep it completely transparent – featuring real consumption data, convincing cost benefits, and a direct, step-by-step calculation example.
