Booking Checkmark

Checkmark Connecting, testing, commissioning and certifying service

Checkmark helps you, as a competent ‘DIY-er’, to achieve a safe, legal and responsible install of an air source heat pump or air conditioner in your home, garden office, workshop or elsewhere.

We do this by connecting, testing, commissioning and certifying a system you have prepared.

This approach helps you:

  • Stay legal, because Checkmark carries out all regulated F-gas work.
  • Avoid buying specialist install equipment.
  • Ensure the system is fully pressure and leak tested.
  • Save money compared to a complete system installed by a company.
  • As a proud DIYer, achieve the quality of work you demand.

Before you book Checkmark

When you’re ready, please get in touch using the booking page. We can then arrange a free, no obligation chat - we find a WhatsApp or FaceTime video call works well.

What we do

Details about Checkmark’s connecting, testing, commissioning and certifying package for DIY installs.

Process for DIY install with Checkmark

An overview flowchart of the DIY air source heat pump / air conditioner install process.


A checklist of things to consider before going ahead with a DIY install.

Book a call

Arrange a no obligation discussion to see how Checkmark can help with your DIY install.