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COP, SCOP and SPF: how to read a heat pump performance estimate

Understand what each efficiency figure measures, what it leaves out and why your home’s final result may differ.

Giles Crosse, Clearwise Energy Editor
Giles Crosse

Heat pump installation day: what happens and how long it takes

See the likely sequence, disruption and handover when an air-to-water heat pump is installed in a UK home.

Giles Crosse, Clearwise Energy Editor
Giles Crosse

MCS certified heat pump installers: what the badge really means

Understand what MCS certification covers, where it falls short and what to check before choosing a heat pump installer.

Giles Crosse, Clearwise Energy Editor
Giles Crosse

What should a room by room heat-loss calculation include?

Find out which measurements and assumptions should sit behind the heat-loss figures used to design a heat-pump system.

Giles Crosse, Clearwise Energy Editor
Giles Crosse

10 air source heat pump installation mistakes and how to avoid them

From sizing and radiators to controls and handover, good design can prevent avoidable comfort and performance problems.

Giles Crosse, Clearwise Energy Editor
Giles Crosse

Heat pump quote checklist: 20 questions to ask before you sign

Use these questions to compare heat pump design, costs, grants, warranties and aftercare before you accept a quote.

Giles Crosse, Clearwise Energy Editor
Giles Crosse

Heat pump quote red flags: the seven warning signs

A sound heat pump quote should explain the survey, system design, costs, grant handling and any projected bill impact.

Giles Crosse, Clearwise Energy Editor
Giles Crosse

Do air source heat pumps work when temperatures fall below zero?

Air source heat pumps keep working below zero, but sizing, defrost cycles and backup heat affect comfort and cost.

Giles Crosse, Clearwise Energy Editor
Giles Crosse