Available in 2027, the Cosy Cooler will come in at an accessible price point of £500-600 when added to an existing Cosy heat pump system. The device is designed to connect to the pipework already in place, with installation expected to take around three hours.
The gadget is the size of a tall kitchen bin and plugs directly into radiator pipework to circulate chilled water through the home – with no need for an outdoor hose. It can cool single rooms or run up to two to three units at once across different rooms, depending on the Cosy heat pump model.
The outdoor Cosy heat pump takes in warm air from outside, using it to chill water and pump it through the home's central heating pipes. The unit inside also draws in warm indoor air, cools it across a built-in heat exchanger, and quietly circulates chilled air into the room.
Temperatures across Britain reached 38.2 C in August 2026. With the El Niño weather phenomenon expected to develop, attention is turning to how families can keep their homes cool next summer, too.
The new cooling system is the latest development in Octopus's push to make heat pumps a mainstream alternative to gas boilers. Thanks to the Boiler Upgrade Scheme, a government grant for heat pump installations, heat pumps now cost the same or less to install than a gas boiler.
Heat pumps are also cheaper to run than a gas boiler, with 99 percent of Cosy customers paying less than they would with a gas boiler, saving an average of £230 a year. Demand for heat pumps is growing, with Octopus having received 570,000 enquiries over the last 18 months.
“Sadly, British homes need to be ready for freezing winters and increasingly hot summers” said Greg Jackson, Octopus Energy founder and chief executive. “The Boiler Upgrade Scheme has helped give the industry the confidence to invest, innovate and drive costs down – and Cosy Cooler is the latest result of Octopus ingenuity.”
Live home and office trials have begun already, but Octopus is still looking for additional testers.
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