{"id":561,"date":"2026-02-18T09:16:05","date_gmt":"2026-02-18T09:16:05","guid":{"rendered":"https:\/\/mywarmhome.co.uk\/stage\/?page_id=561"},"modified":"2026-10-11T14:51:17","modified_gmt":"2026-10-11T14:51:17","slug":"heat-pump-technical","status":"publish","type":"page","link":"https:\/\/mywarmhome.co.uk\/stage\/heat-pump-technical\/","title":{"rendered":"Heat Pump Technical"},"content":{"rendered":"\n
\"Heat<\/span>
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HEAT PUMPS \u00b7 TECHNICAL GUIDE<\/p>\n\n\n\n

Heat Pumps.
The Technical Side.<\/h1>\n\n\n\n

The science, the refrigerant cycle, system design and installation details \u2014 explained for real homes.<\/p>\n<\/div><\/div>\n\n\n\n

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FOUR FUNDAMENTALS<\/p>\n\n\n\n

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01<\/strong><\/p>\n\n\n\n

Collect<\/h3>\n\n\n\n

Energy from air, ground or water.<\/p>\n<\/div>\n\n\n\n

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02<\/strong><\/p>\n\n\n\n

Compress<\/h3>\n\n\n\n

Lift refrigerant pressure and temperature.<\/p>\n<\/div>\n\n\n\n

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03<\/strong><\/p>\n\n\n\n

Deliver<\/h3>\n\n\n\n

Transfer heat into the heating circuit.<\/p>\n<\/div>\n\n\n\n

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04<\/strong><\/p>\n\n\n\n

Repeat<\/h3>\n\n\n\n

Expand refrigerant and begin again.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n

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THE SIMPLE IDEA<\/p>\n\n\n\n

A heat mover, not a heat maker.<\/h2>\n\n\n\n

Even cold outdoor air contains thermal energy. A heat pump uses electricity to move that energy to a higher temperature so it can warm your home. It does not turn electricity directly into heat in the same way as a resistance heater.<\/p>\n\n\n\n

This technical guide explains the physics, system choices, radiator ratings, efficiency figures and practical checks that make the difference between a well-designed installation and one that underperforms.<\/p>\n\n\n\n

\"Heat\n\t\t\t\n\t\t\t\t\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div>\n\n\n\n
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BASIC PHYSICS<\/p>\n\n\n\n

Why cold air can still provide heat.<\/h2>\n\n\n\n

Temperature measures thermal state, not whether usable energy exists. Absolute zero is 0 kelvin (\u2212273.15\u00b0C); outdoor temperatures are far above that, so the surroundings still contain energy that a refrigerant circuit can collect.<\/p>\n\n\n\n

At normal atmospheric pressure, pure water freezes at approximately 0\u00b0C. Refrigerants are selected because they can evaporate at much lower temperatures at the pressures used inside a heat pump.<\/p>\n\n\n\n

Important distinction:<\/strong> the source transfers heat to the refrigerant in the evaporator. The compressor then raises the refrigerant pressure and temperature, allowing useful heat to be released inside the building.<\/p>\n\n\n\n

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\"Refrigeration\n\t\t\t\n\t\t\t\t\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div>\n\n\n\n
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THE REFRIGERATION CYCLE<\/p>\n\n\n\n

Four components doing different jobs.<\/h2>\n\n\n\n