Your local Vaillant engineers in Walthamstow
Whether your Vaillant boiler needs its annual service, has thrown a fault code, or it's time for a brand-new install, our Walthamstow engineers know Vaillant systems inside out. We carry common Vaillant parts on the van, so most repairs are sorted on the first visit.
Annual Vaillant boiler service from £79
Vaillant fault-finding & repair
New Vaillant boiler installation
No call-out fee in Walthamstow
Why Callum's
No call-out fees. No nasty surprises.
We built our reputation on doing the simple things properly, turning up, being honest, and leaving your home clean.
Upfront pricing
Fixed quotes agreed before any work begins. No hidden extras, ever.
Gas Safe registered
Fully qualified, insured and Gas Safe registered engineers.
24/7 availability
Real people answer the phone around the clock for genuine emergencies.
Tidy & respectful
Dust sheets down, boots off, mess cleared. We treat your home like ours.
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