Lämmitys -

Heating accounts for a remarkable two-thirds of household energy consumption, making it the largest energy consumption area. Additionally, domestic hot water boilers, commonly found in detached houses, represent the second-largest energy consumer after heating, about 15% of all energy use.

Both heating and hot water are essential for health, comfort, and overall wellbeing, making them areas where energy efficiency measures must balance savings with maintaining comfort. Fortunately, with the right adjustments and technologies, significant energy savings can be achieved without compromising warmth or convenience.

Radiators or floor heaters (partial heat storage in a concrete tile)
less common: ceiling heaters
Cheapest to install, but most expensive to consume
Can also be used as a backup or additional heating method, e.g. alongside fire place heating
Consumption in a single-family home is approximately 8,000-12,000 kWh/year, but there is a large variation

Water radiators or water-circulated underfloor heating
Heat storage
Consumption depends on the type of heat production (alternatives include oil, electricity, pellets, geothermal heat, district heating)

Reduce hot water use: Limit the use of hot water by installing water-saving showerheads and fixing any leaks.

Hot water boilers

Temperature settings:
Set the boiler temperature to an energy-efficient level, typically 55–60°C. 55–60°CAvoid higher settings, as they can waste energy and cause scaling.
Insulate the tank and pipes:
Use insulation jackets on the water tank and pipes to reduce heat loss.
Off-peak heating:
Schedule the boiler to heat water during off-peak electricity hours, especially if you have a dynamic pricing contract.

Energy efficiency: Smart thermostats use sensors, weather data, and learning algorithms to optimize heating and cooling, reducing energy consumption.
User adaptation They also provide real-time temperature data and control through apps. Some models learn your preferences and adjust automatically to your needs.
Grid responsiveness Delay heating or cooling during from high-demand periods or preheat/pre-cool when electricity is cheaper, can not only save money, but also contribute to the stability of the power system

Cost and benefits

Smart thermostats range from 100-300 €compared to regular programmable thermostats costing 20–50 €.
Smart thermostats can reduce heating and cooling costs by 10-20 %, saving 50-150 € annually in typical homes
They offer a more comfortable and consistent indoor environment while saving energy.

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Efficiency measures

Smart heating

Optimize heating automatically based on electricity spot price, desired settings and weather forecast by using smart thermostats and temperature sensors
Applicable for people interested in technology
Useful also as remote controling and maintanance for houses that are not constantly in use (holiday homes)
Cost approx. 20 000€
Payback in 5-10 years

Scheduling

With heat storage capabilities one can schedule heating during nighttime when ethe lectricity spot price is cheaper

Replace old oil heater

With water circulation heating one can replace an old oil heater or electricity heater with a geothermal heat pump
Efficiency 3-5
Cost approx. 20 000€
Payback 5-8 years

Lower room temperature

Lowering 1 degree can save approx. 5% electricity cost

Ventilation efficiency

Lowering when away
Enabling heat recovery

Purchase air heat pump

1 pc can heat 30-100 square meters of living space
Efficiency 3-5 (1kwh of electricity gives 3-5 kwh of heat), but it reduces with lower outside temperature
Cost approx. 20 000€
Paypack in a few years