Checkmark provides a connecting, testing, commissioning and certifying service for your DIY heat pump/air conditioner install.
It saves you the cost of a full installation whilst keeping you safe and legal.
You’ll also find lots of useful information about how to plan and install your own system.
We help DIY installers
Checkmark helps DIY installers of
About Checkmark
The ideas behind supporting DIY installers of heat-pumps and