We've still got an old back boiler behind the fireplace — what's involved in removing it?

Removing a back boiler means capping off the gas and water connections behind the fireplace, making good the opening or fitting a new fire/surround if you're keeping one, and rerouting pipework to the new combi or system boiler's position. It's more work than a like-for-like swap but a common upgrade on the older housing stock in this area.

What paperwork do I get once the job's finished?

You'll get a Benchmark commissioning checklist for the boiler, a building notice or Building Control completion certificate for notifiable work, manufacturer warranty registration confirmation, and a Gas Safe (or OFTEC) record of the work. Keep these together — they're what a future buyer's solicitor or a warranty claim will ask for.

How does LPG heating differ from mains gas day to day?

An LPG boiler works the same way as a mains gas one day to day, but the gas is stored in a tank or cylinders on site and topped up by a supplier rather than piped in continuously. That means keeping an eye on tank levels and arranging deliveries, but appliance choice, controls, and servicing requirements are otherwise very similar.

How do we decide between a combi boiler and a boiler-plus-cylinder system?

It comes down to hot water demand and available space. A combi heats water on demand with no cylinder to fill, which suits smaller households and single-bathroom homes, while a system or regular boiler with a cylinder stores hot water and copes far better where two bathrooms or a bath and shower run at the same time.

We've got an oil-fired Rayburn or Aga heating the house — can that be replaced with a standard boiler?

Yes, where a range cooker like a Rayburn or Aga is also running the central heating, it can be separated out and replaced with a dedicated modern oil or LPG boiler, keeping the range purely for cooking if you want to retain it, or removing it entirely. Sizing the new boiler correctly for the property is the key part of getting this right.

Can you do oil boiler work in Mells?

Yes — we're OFTEC registered. Mells has plenty of off-grid properties, so Worcester Heatslave and Grant Vortex installs (with tank swaps where needed) are routine for us.

Mells's Local Oil Boiler Installation Specialist

Homeowners, landlords and smallholders tend to ask different questions about oil boiler installation: homeowners want comfort and running costs sorted, landlords need compliant paperwork they can hand to tenants and agents, and rural owners often need to weigh oil against other fuels. We cover all three from 24 Bristol Road, Radstock BA3 3EE as a Gas Safe registered and OFTEC registered firm, so the advice is tailored to what you actually need the system to do. Most of what we open up here is stone cottages and listed buildings, which dictates flue routes and pipe sizing. Access is lane access, so parking, spoil removal and delivery timing get planned in advance. In Mells itself (BA3, Somerset) that usually means stone cottages and listed buildings, roughly 4 miles from the workshop.

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BA3 · Somerset · 4 mi from Radstock · unclassified

Oil Boiler Installation on a village property 4 miles from Radstock, oil boiler installation in Mells (BA3) — Somerset

Mells: stock, water and fuel supply

Water here runs off carboniferous limestone and Jurassic oolite, which makes it very hard by national standards. Hard water accelerates scale build-up inside heat exchangers, cylinders and pipework, which shortens the working life of components that aren't protected against it. On jobs in this area we factor scale protection into the specification rather than treating it as an optional extra, because the difference between a protected and unprotected system shows up within a few years, not decades. It's a genuine local variable, not generic sales advice, and it applies whether the property is on mains gas or oil. Water here is very hard limestone water, so scale protection is specified accordingly. Conservation and listed constraints apply to parts of the area, so external work is checked first. Mells is roughly 4 miles from our Radstock base via the unclassified. Typical property stock here: stone cottages and listed buildings. Mells sits in the Somerset BA3 postcode and is part of our weekly run, so local response is quick. For oil work we look at the tank's age, bund condition, fire valve and fuel-line route as part of the survey — not as an afterthought.

Within reach of the unclassified

Beyond Mells we're frequently on jobs in Leigh upon Mendip (BA3), Buckland Dinham (BA11), Kilmersdon (BA3) and Stratton-on-the-Fosse (BA3) — so spares, follow-ups and annual services are straightforward.

Scope of work, itemised

OFTEC trained & registered
Internal & external oil boilers
Oil tank replacements
Worcester Greenstar & Grant Vortex
Free written quote, no obligation
Local aftercare from a 4-mile base

Qualifications behind the work

OFTEC trained

Oil boilers, oil tanks and pipework — fully certified for off-grid installs and replacements.

Local, family-run

Based at 24 Bristol Rd, Radstock — every job is run by the team that quoted it.

Worcester Bosch Accredited

Qualifies your install for the full 10-year manufacturer guarantee* on supported models.

Checkatrade 9.9/10

362+ verified reviews from real customers across BA and BS postcodes.

Oil Boiler Installation FAQs for BA3

We've still got an old back boiler behind the fireplace — what's involved in removing it?: Removing a back boiler means capping off the gas and water connections behind the fireplace, making good the opening or fitting a new fire/surround if you're keeping one, and rerouting pipework to the new combi or system boiler's position. It's more work than a like-for-like swap but a common upgrade on the older housing stock in this area.
What paperwork do I get once the job's finished?: You'll get a Benchmark commissioning checklist for the boiler, a building notice or Building Control completion certificate for notifiable work, manufacturer warranty registration confirmation, and a Gas Safe (or OFTEC) record of the work. Keep these together — they're what a future buyer's solicitor or a warranty claim will ask for.
How does LPG heating differ from mains gas day to day?: An LPG boiler works the same way as a mains gas one day to day, but the gas is stored in a tank or cylinders on site and topped up by a supplier rather than piped in continuously. That means keeping an eye on tank levels and arranging deliveries, but appliance choice, controls, and servicing requirements are otherwise very similar.
How do we decide between a combi boiler and a boiler-plus-cylinder system?: It comes down to hot water demand and available space. A combi heats water on demand with no cylinder to fill, which suits smaller households and single-bathroom homes, while a system or regular boiler with a cylinder stores hot water and copes far better where two bathrooms or a bath and shower run at the same time.
We've got an oil-fired Rayburn or Aga heating the house — can that be replaced with a standard boiler?: Yes, where a range cooker like a Rayburn or Aga is also running the central heating, it can be separated out and replaced with a dedicated modern oil or LPG boiler, keeping the range purely for cooking if you want to retain it, or removing it entirely. Sizing the new boiler correctly for the property is the key part of getting this right.
Can you do oil boiler work in Mells?: Yes — we're OFTEC registered. Mells has plenty of off-grid properties, so Worcester Heatslave and Grant Vortex installs (with tank swaps where needed) are routine for us.

Where to go from here

If you're not in a rush, arranging oil boiler installation outside the depths of winter usually means more flexibility on scheduling and a calmer job overall. If you are in a rush because something's already failed, tell us that when you call so we can prioritise accordingly within our normal working hours. We can usually pair the visit with other work in Leigh upon Mendip to keep the trip efficient. Mains gas covers much of the area, with off-grid pockets, which changes the appliance shortlist. Our van runs the unclassified to reach you, 4 miles out from the Radstock workshop.

07516 118198 All services in Mells

Mells coverage and distances

County: Somerset
Postcode district: BA3
Settlement type: village
Nearest classified road: unclassified
Distance from our base: 4 miles (Radstock, BA3)
Typical building stock: stone cottages and listed buildings
Water hardness: very hard limestone water
Fuel availability: mains gas with off-grid pockets
Customer mix: homes alongside small commercial and agricultural premises
Nearby areas covered: Leigh upon Mendip, Buckland Dinham, Kilmersdon, Stratton-on-the-Fosse

Things we check around Mells

Signs a boiler repair is no longer the right call

A boiler that's failing repeatedly, needing a different part replaced every service, or over roughly ten to fifteen years old is approaching the point where continued repair costs more over time than replacement, particularly once a heat exchanger — the most expensive single part — starts to show signs of failure through leaks or reduced output. Efficiency is the other half of the calculation: an older non-condensing boiler running at 70-80% efficiency against a modern condensing combi at over 90% means a meaningful chunk of every unit of fuel burned in the old boiler is simply lost up the flue. We give a straight answer on repair versus replace based on the fault found and the boiler's age and condition, rather than defaulting to whichever is more profitable to us on the day.

Do you need listed building consent for a new flue?

Whether a new boiler flue on a listed building in or around Mells needs formal listed building consent depends on whether the work affects the building's special architectural or historic character — cutting through an original stone wall or a decorative elevation is far more likely to need consent than routing through a later, non-original extension. Consent has to be granted before the work starts; carrying it out first and applying afterwards is a criminal offence under the Planning (Listed Buildings and Conservation Areas) Act, not just a paperwork formality to tidy up later. We recommend checking with the local planning authority's conservation team at the quoting stage on any listed property, because the answer varies by building and by exactly which wall is proposed, and getting it wrong can mean expensive remedial work to satisfy the authority afterwards.

Common boiler fault codes and what usually causes them

Most modern boilers display a fault code on the control panel when they lock out, and while the exact code differs between manufacturers, the underlying causes cluster into a small number of categories: low system pressure (often from a small leak or after bleeding radiators), ignition failure (a worn electrode, gas supply issue, or blocked condensate causing a safety shutdown), or a failed sensor reporting an implausible temperature reading. A condensate blockage or freeze specifically tends to show a distinct code from a genuine ignition fault, which is why checking the external condensate pipe for ice before calling out an engineer in a cold snap can sometimes resolve the issue without a visit at all. We ask for the exact fault code and any recent history — a bled radiator, a cold snap, a recent service — before attending, since it often narrows down the likely cause before we arrive.

LPG as an alternative to oil off the gas grid

Properties around Mells that sit off the mains gas network aren't limited to oil — bulk LPG, stored in an above-ground tank on a concrete base with the same OFTEC-style clearance and access rules as oil, runs standard gas-rated boilers with only a change of injector and pressure setting rather than a different boiler entirely. It suits households that want a gas hob and gas-style modulation rather than an oil burner's on/off firing pattern. The tank still needs delivery access for a tanker, which on some rural driveways is the deciding factor over oil. We check the access route for the largest realistic delivery vehicle before recommending LPG over oil, because a tank that can't be filled easily causes more disruption than the fuel choice was meant to solve.

Chasing pipework into lime plaster and stone walls

Solid stone or cob walls finished in lime plaster, common in the older parts of Mells, behave very differently to modern plasterboard when a pipe run needs chasing in. Lime plaster is softer and more porous than gypsum, so cutting a neat, consistent chase without blowing the surface needs a slower hand and finer disc than a stud-wall job, and any repair has to be made good in a lime-based skim rather than modern filler, which can trap moisture behind it and cause the patch to fail. On solid stone we sometimes surface-mount pipework in painted conduit instead of chasing, particularly where the wall is a significant structural thickness and chasing would weaken it. Knowing which approach a wall needs before starting avoids expensive plaster damage.

Single-pipe circuits in older stone cottages

A lot of the stone cottages and farmhouses around Mells were plumbed decades ago on a single-pipe gravity circuit, where each radiator draws from and returns to the same loop rather than having its own flow and return. It works, but radiators furthest from the boiler receive water that's already cooled after giving up heat to the ones before it, so the far end of the house is always the coldest. Converting to a two-pipe layout means new pipe runs, which in a stone cottage often means chasing lime plaster or lifting flagstones — not a trivial job. Where a full rewire of the pipework isn't wanted, we sometimes improve balance instead by oversizing the radiators nearest the end of the run and fitting TRVs to hold back the ones nearest the boiler.

Other boiler services in Mells

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