Chew Valley cottages
Cottage boiler upgrades in the Chew Valley
Chew Valley cottages typically pair thick stone walls with awkward internal chimneys and off-grid fuel. Boiler upgrades here are less about the boiler and more about routing — flue, condensate, oil or LPG supply — through masonry that pre-dates central heating by a century.
For: Cottage owners around Chew Magna, Chew Stoke and Bishop Sutton

Coring stone walls, respectfully
Diamond-coring a 600mm stone wall is doable but slow. On listed or particularly historic cottages we look at existing openings, spare vents or an external boiler instead — often the tidier answer.
What the cottage upgrade looks like
- Flue routing options mapped before quote
- Stone-friendly coring where an internal boiler is best
- External Vortex or LPG combi where flueing is contentious
- Radiators rebalanced for the thick-wall thermal lag
- Old-system flushing to remove pre-1970s sludge
Frequently asked
- Will a modern boiler heat a cottage properly?
- Yes — provided it's sized on real heat loss including the stone-wall U-values. Undersized boilers in cottages fail to reach setpoint on cold evenings; we size properly.
- Can I keep the open fire?
- Absolutely. The boiler and the fire are independent — we just need to ensure any solid-fuel appliance has its own compliant flue and CO alarm.
- How disruptive is the install?
- One to two days. Coring is the noisy part; the rest is quiet plumbing.
Book a cottage survey
Send us cottage photos and we'll come back with a routing plan and a fixed price that respects the walls and the character.
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