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MRCOOL unveils DIY heat pump that doubles as air conditioning

Maximilian Schwerdtfeger
Written By
Published on 13 August 2026
  • US firm unveils all-in-one heat pump that can be mounted on walls
  • Installation only needs two discreet exterior walls
  • Firm says it’s perfect for compact indoor spaces
Credit: MRCOOL

Homeowners might soon have another heat pump to choose from with US firm MRCOOL launching its Monoblock MTHP Series, an all-in-one, wall mounted heat pump that can keep a home cool in the summer and warm in the winter.

Unlike regular heat pumps, the Monoblock MTHP series is contained within a single indoor unit. MRCOOL says that installation only needs two discreet exterior wall openings for airflow. This makes it easier for to install it in locations where it might not be practical to do so inside.

The company says the Monoblock is designed for spaces that need independent temperature control without the complex installations of some regular heat pump technology.

The company describes it as “the ideal climate change choice for backyard work-from-home shed, smaller homes and garage conversions.” It could even be used in flats and compact, shared living spaces.

Christian Rea, Director of MRCOOL, said the series “adds climate control to spaces that are traditionally difficult to condition”.

“By eliminating the high cost and hassle associated with an outdoor condenser, we’ve reduced installation time by 60% compared to central systems.”

While heat pumps are commonly used as a more efficient and cleaner alternative to gas boilers, they can also be used as air conditioning. An air-to-air heat pump is essentially an air conditioner that heats up and cools down air depending on your need. The Boiler Upgrade Scheme offers £2,500 towards the cost of an air-to-air heat pump.

Written By

Maximilian Schwerdtfeger

Max joined The Eco Experts as content manager in February 2024 and became deputy editor in 2025. He has written about sustainability issues across numerous industries, including maritime, supply chain, finance, mining, and retail. He has also written extensively for consumer titles like City AM, The Morning Star, and The Daily Express.

He has represented The Eco Experts on national television several times, including the BBC’s Sunday Morning Live and ITV Tonight .

In 2020, he covered in detail the International Maritime Organisation’s (IMO) legislation on sulphur emissions and its effects on the global container shipping market as online editor of Port Technology International.

He also explored the initiatives major container ports and terminals have launched in order to ship vital goods across the world without polluting the environment.

Since then, he has reported heavily on the impact made by environmental, social, and governance (ESG) practices on the supply chain of minerals, with a particular focus on rare earth mining in Africa.

As part of this, in 2022 Max visited mines and ports in Angola to hone in on the challenges being faced by one of the world’s biggest producers of rare earth minerals.

His most recent sustainability-related work came much closer to home, as he investigated the eco-challenges faced by independent retailers in the UK, specifically looking at how they can cut emissions and continue to thrive.

Max lives in South London and is an avid reader of books on modern history. He has also recently learned to play the game Mahjong and takes every opportunity to do so. He is also yet to find a sport he doesn’t enjoy watching.

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