2924 · F-Gas & heat pumps revision

Air Source Heat Pumps revision notes

Heat-pump principles and components, COP and SCOP, MCS (MIS 3005, MCS-020) and permitted development, fabric-first design and sizing, siting and noise, and the F-Gas certification boundary.

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Principles & operation

Lesson

Heat-pump cycle, COP and system modes

How the vapour-compression cycle moves heat, why temperatures affect COP, and what monovalent and bivalent systems mean.

Components

Lesson

Heat-pump components and their jobs

Trace energy and flow through the refrigerant, hydraulic and control components of an air-source heat-pump system.

Standards & regulations

Lesson

Heat-pump standards, planning and competence

Separate design standards, Building Regulations, planning, electrical duties and refrigerant competence.

Design & sizing

Lesson

Heat pump design — the essentials

Why heat pumps are designed around low flow temperatures, heat loss and bigger emitters.

Installation

Lesson

Air-source heat-pump installation checks

A practical sequence for siting, water-side preparation, condensate, electrical provision, commissioning and handover.

Service & maintenance

Lesson

Heat-pump service and maintenance diagnosis

A measured maintenance sequence covering airflow, water flow, condensate, antifreeze, controls and the refrigerant boundary.

Revise the heat pump and the heating system together

Trace how heat moves through the refrigeration cycle, then connect the heat pump to the building demand, emitters and controls. For a design scenario, identify the operating conditions behind a quoted output or efficiency figure before comparing options.

Use the radiator output calculator to explore lower-temperature emitter performance and the Level 3 heating notes for design principles. The F-Gas notes cover the separate refrigerant-handling subjects where they apply, and the F-Gas certification guide explains where a monobloc installation ends and certified refrigerant work begins.

More F-Gas & heat pumps modules

Every module has its own revision notes and question bank.

F-Gas Category 1