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. Automotive cooling, smoke testing and indoor formaldehyde detection are outside this reference.
What we contribute
We organise scattered technical documentation around practical decisions, preserve the distinction between models, and make unresolved compatibility fields visible. Our diagrams explain principles. They do not depict original field measurements.
Read our evidence policy and commercial disclosure.