01
It moves heat rather than burns fuel
The outdoor unit transfers available heat into the home’s heating and hot-water system. The result depends on design conditions, controls and how the system is used.
Heat-pump information
What is a heat pump—and what does a proper design need to consider?
An air-source heat pump moves heat from outside air into a home heating and hot-water system. It works as part of a system, so a good installation starts with heat loss, radiator output, hot-water needs, property layout, pipework, outdoor location and controls—not simply the nameplate size of a unit.
Funding routes worth checking
A heat-pump conversation can include current grant pathways.
The Boiler Upgrade Scheme and Warm Homes routes have different rules. HEG can explain how a heating design fits the process, but neither route is guaranteed until eligibility is confirmed.
What matters for this route
Clear information before you decide what happens next.
02
UK homes need a proper design
A heat pump can be considered in UK weather, but heat loss, insulation, outdoor position, hot water and emitter output all influence the final design.
03
Radiators are part of the answer
Existing radiators are assessed for output at the intended flow temperature. HeatBoost can be one route where additional lower-temperature output is useful.
How HEG approaches it
A simple path from a useful starting point to a proper survey.
1
How the system works
Outdoor air, refrigeration technology and a compressor are used to move heat into the home’s water-based heating circuit.
2
How running costs are approached
Electricity tariff, heat loss, flow temperature, hot-water habits and controls all matter, so HEG avoids generic savings promises.
3
How HEG helps
The Heat Pump Tool gives a starting point; the survey confirms a design, package scope and any relevant funding pathway.
A considered HEG conversation
Tell us what you have now, then let the survey do the technical work.
Heat loss and radiator outputProperty and location checksCurrent grant rules where relevant
Start the Heat Pump guide What Our Customers Say
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United Kingdom · Jan 2026
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United Kingdom · May 2026
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