Gas Safe · F-Gas · MCS · London
Servicing and repairs, when things need attention.
Boiler services, heat pump inspections, air con recommissioning, and emergency call-outs. Gas Safe-registered, F-Gas certified, fully insured. We service systems we installed and plenty that we did not.
What we service
Everything we install — and plenty we didn't.
An annual service is the cheapest insurance you'll ever buy against a boiler or heat pump failure in January. It's also the condition most manufacturers attach to honouring your warranty — skip it for a year, and the extended cover quietly lapses.
We service gas and electric boilers to Gas Safe standards with a full combustion check. Air source heat pumps with a proper refrigerant inspection, weather compensation curve review and system clean. Air conditioning to F-Gas standards with filter replacement, coil clean and pressure check. Underfloor heating manifolds for flow balance and filter inspection.
When a system fails, we run a proper repair service. Same-day where we can, next working day otherwise. Diagnosis fee agreed up front, parts quoted before fitting. If it's beyond economic repair, we'll tell you straight.
Care plans
Three ways to stay looked after.
Ad-hoc
Pay as you go.
Book a single service or repair visit. No subscription, no contract. Fixed price per service type, quoted before we book.
Typical annual boiler service: £95–£145 depending on boiler type and last service history.
Annual care
Serviced, reminded, covered.
One annual service per system, priority repair booking, and a discount on emergency call-outs. We remind you when it's due — you don't have to remember.
From £14/month for a single boiler. Multi-system bundles available.
Full cover
Everything, one number.
Annual service plus parts-and-labour cover on the whole system. Emergency call-outs included. The closest thing to "don't think about it again" we offer.
Quoted per home after an initial inspection visit.
Emergency repair
Boiler's out, house is freezing?
If you're existing customer or not, pick up the phone. We keep emergency slots each day for no-heat or no-hot-water calls. Transparent diagnosis fee, parts quoted before fitting.
Customer stories
What homeowners tell us after the install is finished.
Placeholder reviews shown while we build a verified Google and Checkatrade profile.
Annual service on the boiler. Text when they were ten minutes away, overshoes on without being asked, left an actual report. Proper tradespeople.
James H.
Clapham · Annual service
Replaced our old combi with a heat pump. Quiet, much cheaper to run, and the team left the plant room tidier than they found it.
Rachel M.
Dulwich · Heat pump
We had three quotes for a new Viessmann boiler. Thermalwerk was not the cheapest, but they were the only ones who actually explained the sizing.
David K.
Islington · Boiler replacement
Talk to us
Book a service, or tell us what's gone wrong.
A quick description of the system and the issue is all we need. We'll call back the same working day with a diagnosis plan and a realistic cost.