The heat does not distribute itself
The pump warms the air where the indoor unit sits. In a divided home with closed doors the heat only partly reaches the other rooms, and the effect falls short of the data sheet.
All energy measures
Heating and hot water
Air-to-air heat pump
An air-to-air heat pump takes heat from outdoor air and blows it into the room. It is the cheapest heat pump to install and the one that demands least of the building.
See what this means for your homeThis measure is relevant if
- The home is heated with panel heaters today
- The layout is open, so the heat travels
- You have no waterborne heating and will not install it
- You want an effect without major work on the house
What it does to energy use
Performance falls in the cold
The colder it is outside, the less heat you get per kilowatt-hour of electricity — and demand is highest exactly then.
It does not cover hot water
Tap water must still be heated by a tank. That is a large item left untouched however well the pump performs.
Cooling in summer
Most units can cool. That adds comfort but raises consumption in a season when it would otherwise be low.
Sequence matters
Air-to-air is the least critical measure to place in the sequence, because it is not sized as tightly as a waterborne system. But it pays off more in a house that is already sealed — in a leaky house it runs at maximum output, where efficiency is lowest.
Enova funding
Air-to-air heat pumps are not on Enova's list of supported measures. The technology is considered well established in the market. The measure therefore has to pay for itself on saved electricity alone.
Rates and terms change. What you can receive depends on the building, how the work is carried out and which schemes apply at the time. Always check Enova's own pages before relying on a figure.
The rates tell you what you can receive. The calculation tells you what the measure actually does to your home — how much it saves, what it costs, and whether it should come before or after the others.
Which measures pay off in your home?
Enter the address. Gadder collects what is known about the building, calculates the energy demand and ranks the measures by what they actually deliver.