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Octopus Energy is developing the Cosy Cooler, an add-on intended to provide room cooling through compatible existing Cosy heat pump pipework. The company says it is targeting a 2027 launch, an estimated £500–£600 retail price and installation in about three hours; those details remain plans rather than confirmed final specifications.
Octopus Energy is developing the Cosy Cooler, an add-on designed to bring room cooling to homes with its Cosy heat pumps, according to a report by Cooling Post. The company is targeting a 2027 launch and says the unit could retail for about £500–£600, offering an alternative to installing a separate air-conditioning system.
The proposed unit is designed to connect to the existing pipework of a Cosy heat pump system. Cooling Post reports that Octopus says installation could take around three hours and would not require major building work. The price, installation time and launch date are projections from the development stage, not confirmed specifications for a product already on sale.
According to the report, the Cosy Cooler would draw heat from a room and transfer it through a heat exchanger connected to the radiator loop, which the system would keep at about 18°C. The heat would then travel through the heating pipework and be rejected by the home’s outdoor Cosy heat pump.
The design could serve a single room, or run as many as two to three units in separate rooms, depending on the heat pump model. Cooling Post describes the current prototype as approximately 722mm high, 430mm wide and 358mm deep, with a weight of about 28kg. Those measurements are for the prototype and may change before launch.
Cooling Without Separate Air-Conditioning
The proposal could give some existing Cosy heat pump owners a way to add room cooling without buying a separate air-conditioning system. Connecting to the home’s heating pipework may also reduce the need for major installation work, although the reported three-hour estimate has not been independently verified and may depend on the property and system.
The projected £500–£600 price is central to the product’s appeal: Octopus is positioning the add-on as a lower-cost option than separate air-conditioning. No comparative prices, running-cost figures or performance tests are included in the report, however, so buyers cannot yet assess the overall cost or how effectively it would cool different rooms.
The product is aimed at homes that already have a compatible Cosy heat pump, rather than being presented as a standalone cooling system for all households. Its reach will depend on compatibility, the number of rooms it can serve and the final price and installation requirements.
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How the Cosy Cooler Uses Existing Pipework
The Cosy Cooler is being developed as an add-on to Octopus Energy’s Cosy heat pump, not as a replacement for the heat pump itself. The reported design uses the existing heating circuit to move heat out of a room and toward the outdoor unit. That approach is the basis for Octopus’s claim that installation could avoid major building work.
Cooling Post’s report describes the product as a prototype and attributes the planned launch, estimated price and installation time to Octopus. It does not provide independent test results, a final product specification or evidence that the proposed performance has been validated across different homes. The reported multi-room capacity also varies by heat pump model.
“The Cosy Cooler is expected to retail at around £500–£600.”
— Octopus Energy, as reported by Cooling Post
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Final Price and Performance Await Testing
The Cosy Cooler remains under development, and the report does not establish that the 2027 launch or projected price is final. It is also unclear when Octopus will open sales, which Cosy heat pump models will be compatible, or whether installation will be available across the UK.
No cooling-capacity figures, energy-use estimates, noise levels, warranty information or independent performance tests are provided. The report also does not explain how well the system would cool rooms under different conditions, or what adjustments might be needed to existing radiators and pipework. Final dimensions and the number of rooms supported could change from the prototype details.
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Development Toward a 2027 Launch
Octopus is developing the product ahead of its stated 2027 launch target. The next useful details for prospective customers will be a confirmed release date, final price, compatibility list and published performance information. The report does not give a timetable for further testing or when those specifications will be announced.
Until Octopus confirms those points, the Cosy Cooler should be understood as a planned add-on rather than a product currently available to order. Owners interested in cooling should check the final model requirements and installation terms once the company releases them.
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Key Questions
What is the Cosy Cooler?
It is a proposed cooling add-on for Octopus Energy’s Cosy heat pumps, designed to connect to existing system pipework and remove heat from a room.
When is it expected to launch?
Octopus is targeting a 2027 launch, according to Cooling Post. The report does not give a specific release date, and the timing remains a development plan.
How much is the Cosy Cooler expected to cost?
The reported expected retail price is around £500–£600. Octopus has not confirmed a final price.
Will it cool more than one room?
The reported design could cool one room or run two to three units across separate rooms, depending on the Cosy heat pump model. Final compatibility and capacity details have not been published.
Is the Cosy Cooler available to buy now?
No. It is described as a prototype in development, with a planned launch in 2027 rather than current availability.
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