Company
Our story
We do the lot — boilers, air con, heat pumps and plumbing — one local team for your whole home.
Who started Datum
David founded Datum after years on the tools across heating and plumbing. He writes the boiler and cost guides from what actually happens on real installs.
How we work
Every job documented, every price fixed in writing, every engineer someone you'll actually meet. Tidy isn't an accident; it's the standard.
After the job
The same person who fitted it keeps an eye on it. No call-centre rota.
Where we work
Boiler installation, air conditioning, heat pumps and plumbing across London & Hertfordshire.
Ready for a real price
Sixty seconds to a range, one free survey to a fixed price.