Guides
6 min read
Why your heat pump should run at 3am
Lena Marsh · Kova Journal
Most heat pumps are set up like boilers: on in the morning, on in the evening. That’s exactly when electricity is most expensive - and most carbon-intensive.
Your house is a battery
A well-insulated home loses around half a degree an hour. Heat it to 21°C at 4am on cheap power and it’ll still be comfortable at breakfast, without the heat pump straining at peak.
On a typical UK heat-pump tariff, shifting just 40% of heating to overnight hours cuts the bill by a third.
How Kova decides
Kova looks at tomorrow’s forecast, your home’s heat loss (which it learns in about a week) and half-hourly prices, then plans the gentlest possible schedule that keeps you warm at the times you’ve told it matter.
The bottom line
You don’t need a bigger heat pump or a new tariff to start saving. You need the one you have to run at the right time.
