Trust AC knowledge library

Air conditioning guides

Understand the system and the caveats before choosing equipment, budget and next steps.

Practical UK guides for air conditioning and air-to-air heat pump customers, covering principles, installation, costs, boiler comparisons, brands and F-gas basics. Use them to prepare a better enquiry, not as a substitute for survey or compliance advice.

Principles5 min read

How air conditioning works

How split AC moves heat with refrigerant, coils, fans and controls.

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Heat pumps5 min read

Air-to-air heat pumps explained

What air-to-air heat pumps do, where they help and where assumptions matter.

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Comparison6 min read

Air conditioning vs gas boiler

Compare AC heat pumps and a gas boiler without pretending one answer fits every property.

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Survey4 min read

Installation survey and photos

What photos and site details make a remote estimate more useful.

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Systems5 min read

Single split vs multi split

Single split and multi split trade-offs for homes and small businesses.

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Sizing5 min read

Sizing, capacity and heat gain

Why capacity depends on heat gain, insulation, use pattern and room layout.

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Placement4 min read

Indoor unit placement

Indoor unit placement affects airflow, noise, service access and comfort.

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Planning5 min read

Outdoor unit placement, noise and planning

Outdoor unit placement, airflow, noise, neighbours and planning caveats.

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Installation4 min read

Pipework, drainage and condensate

Pipework, drainage and condensate decisions that often change labour.

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Electrical4 min read

Electrical requirements

Electrical checks that may affect AC installation scope and timing.

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Costs5 min read

Running costs and efficiency

Running costs, efficiency and why indicative figures need assumptions.

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Servicing4 min read

Maintenance, filters and servicing

Maintenance, filter cleaning and servicing expectations for AC systems.

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Compliance5 min read

Refrigerants and F-gas

F-gas basics, refrigerant handling and why leaks matter.

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Brands5 min read

Daikin, Mitsubishi, Panasonic and Fujitsu comparison

How to compare Daikin, Mitsubishi, Panasonic and Fujitsu sensibly.

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Budget4 min read

Budget, Standard and Premium units

What Budget, Standard and Premium usually mean before stock is confirmed.

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Commercial5 min read

Commercial air conditioning basics

Commercial AC basics for shops, clinics, offices and customer areas.

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Bedrooms4 min read

Bedroom air conditioning and noise

Bedroom AC needs careful noise, airflow and night-time comfort choices.

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Planning5 min read

Flats, listed buildings and conservation areas

Flats, listed buildings and conservation areas need early checks.

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Grants4 min read

Heat pump grants and eligibility

Heat-pump grants and eligibility are not the same for every technology.

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Quotes5 min read

What a good written quote includes

How to read equipment, scope, assumptions, exclusions and payment terms.

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