Definitions & Terminology

This section defines technical terms that are frequently misused or assumed to be interchangeable. Each entry distinguishes formal meaning from common site language and explains why the difference matters legally and technically. It exists to reduce ambiguity and dispute risk.

Heat pump vs air conditioner in compliance terms

How heat pumps and air conditioners are distinguished in UK domestic compliance documentation, and why mislabelling creates evidential risk.

Reasonable provision under the Building Regulations in Residential Air Conditioning

Defines “reasonable provision” in Building Regulations practice, and how it is commonly evidenced and scrutinised in domestic air-conditioning compliance contexts.

Air Conditioning Cooling capacity vs delivered cooling

Distinguishes test-rated cooling capacity from in-use delivered cooling, and explains why the difference matters in UK domestic compliance and disputes.

Air conditioning vs ventilation (regulatory context)

Clarifies how air conditioning and ventilation are distinguished under UK domestic building regulations.

Installer responsibility vs design responsibility

Clarifies how installer and design responsibilities are distinguished in UK domestic air-conditioning compliance contexts.

Commissioning vs testing vs verification

Clarifies the professional distinction between commissioning, testing, and verification in UK domestic air-conditioning.

Compliance vs performance in domestic air-conditioning

Defines the difference between compliance and performance in domestic air-conditioning.