Who publishes this site?
HVAC Leak Check is an editorial reference published by a team associated with an instrument retail business. Articles are attributed to the HVAC Leak Check editorial team. The site provides source-based technical explanations; it does not offer engineering certification, laboratory testing or accredited training.
Who is it for?
UK engineers and supervised apprentices who need to interpret readings, check documented instrument capabilities and identify missing connection information. The focus is stationary HVAC, refrigeration and heat pumps, with sources and limits kept alongside each claim. Automotive cooling, smoke testing and indoor formaldehyde detection are outside this reference.
What does this reference contribute?
We organise scattered technical documentation around practical decisions, preserve the distinction between models, and make unresolved compatibility fields visible. Readers can use the references to separate a documented capability from an assumption and identify what still needs checking. The photographs explain a distinction. They are not photographs of a named product, a completed test or a field measurement.
Read our evidence policy and commercial disclosure.