Bath Oil Boiler Installation
There's not much mystery to oil boiler installation done properly: a site visit to see the property, a written quote that sets out exactly what's included, and work carried out by a registered engineer who takes responsibility for it. That's how we run things from 24 Bristol Road, Radstock BA3 3EE, as a Gas Safe registered and OFTEC registered business open Monday to Friday, 8:30am to 5pm. Our van runs the A36 to reach you, 8 miles out from the Radstock workshop. a high proportion of rented and let properties make up most enquiries from this postcode. In Bath itself (BA1, Somerset) that usually means georgian townhouses, victorian terraces, modern flats, roughly 8 miles from the workshop.

Local conditions we plan around in BA1
Most properties in this settlement sit on the mains gas network, which keeps the fuel choice straightforward and generally opens up the widest range of boiler options. That doesn't remove every complication — flue routing, existing pipework diameter and how the property currently distributes heat still need checking — but it does mean the conversation usually starts from a simpler baseline than in the off-grid villages further out. We're Gas Safe registered for exactly this kind of work. a high proportion of rented and let properties make up most enquiries from this postcode. Our van runs the A36 to reach you, 8 miles out from the Radstock workshop. Bath is roughly 8 miles from our Radstock base via the A36. Typical property stock here: Georgian townhouses, Victorian terraces, modern flats. Mains gas covers most of Bath, so the usual choice is between a modern combi or a system boiler with a cylinder — we'll size it correctly for the home, not just swap like-for-like. 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.
Also covering the lanes around Bath
Beyond Bath we're frequently on jobs in Lansdown (BA1), Larkhall (BA1), Combe Down (BA2) and Bathampton (BA2) — so spares, follow-ups and annual services are straightforward.
Qualifications behind the work
Based at 24 Bristol Rd, Radstock — every job is run by the team that quoted it.
362+ verified reviews from real customers across BA and BS postcodes.
Oil boilers, oil tanks and pipework — fully certified for off-grid installs and replacements.
No verbal-only quotes. You'll get the boiler model, controls and warranty in writing before we book.
What oil boiler installation includes here
- OFTEC trained & registered
- Internal & external oil boilers
- Oil tank replacements
- Worcester Greenstar & Grant Vortex
- Free written quote, no obligation
- Local aftercare from a 8-mile base
Oil Boiler Installation FAQs for BA1
- We're on mains gas — is a boiler swap a fairly simple job?
- Where the new boiler goes in the same place with the same flue route, a mains gas swap is usually the most straightforward job we do — often completed within a working day. It gets more involved if you're relocating the boiler, changing from a heat-only or system boiler to a combi, or the existing pipework needs upgrading to suit.
- Is a magnetic filter really necessary, or is it an upsell?
- It's a genuine manufacturer requirement, not an add-on we invent — most boiler warranties are conditional on a system filter being fitted, particularly on hard water. The filter catches magnetite sludge and debris circulating in the system before it reaches the boiler's heat exchanger, which is what actually causes blockages and noise over time.
- Is it worth upgrading the heating controls when we replace the boiler?
- Where the existing controls are an old mechanical timer and single room thermostat, replacing them alongside the boiler with weather compensation or a modern programmable thermostat usually improves comfort and efficiency more than the boiler swap alone. It's not compulsory, but it's often the single best-value addition to a new install.
- Our property's let to students — what's our legal obligation on boiler servicing?
- As with any tenancy, every gas appliance needs an annual safety check from a Gas Safe registered engineer producing a CP12, and it has to be provided to tenants before or at the start of the tenancy and renewed every year. With student turnover often mid-year, keeping the record current alongside changeover dates is worth diarising.
- What actually happens on install day?
- The engineer isolates the gas or oil supply and water, removes the old boiler, fits and pressure-tests the new one, connects the flue and condensate, and commissions the system. For a straight swap this is usually one day; a conversion, relocation, or cylinder change can run into a second depending on the pipework involved.
- Do you cover all of Bath?
- Yes — every street in BA1 that falls under Bath, plus the lanes towards Lansdown and Larkhall. We're 8 miles away in Radstock, so most jobs are reached in well under half an hour.
Where to go from here
If your property has anything unusual about access — a narrow lane, restricted parking, a farm track, or shared access with neighbours — mention it when you book the survey for oil boiler installation. It helps us plan the visit properly and avoid delays on the day. We can usually pair the visit with other work in Lansdown to keep the trip efficient. Mains gas is available across most streets, which changes the appliance shortlist. Typical era of build is georgian, which affects existing pipework and system cleanliness.
Coverage detail for BA1
- County
- Somerset
- Postcode district
- BA1
- Settlement type
- city
- Nearest classified road
- A36
- Distance from our base
- 8 miles (Radstock, BA3)
- Typical building stock
- Georgian townhouses, Victorian terraces, modern flats
- Water hardness
- very hard limestone water
- Fuel availability
- mains gas across most of the area
- Customer mix
- a high proportion of rented and let properties
- Nearby areas covered
- Lansdown, Larkhall, Combe Down, Bathampton
Technical notes for this job type
Routing a flue through a listed or conservation-area property
Bath falls within an area where listed building consent or conservation area rules can affect where a boiler flue is allowed to terminate — a plume on a principal elevation facing the street is often unacceptable even where it would technically clear manufacturer distances. Getting consent, where it's needed, has to happen before the flue is cut through a wall, not retrospectively. In practice this usually means routing the flue to a rear or side elevation even if that means a longer pipe run and an extra bend, or using a horizontal flue kit through a lower window reveal wall rather than the roof. We check with the relevant conservation officer's published guidance before quoting a flue route on a listed or Article 4 property rather than assuming the shortest run will be approved.
What a proper heating quote should include
A quote worth relying on states the specific boiler or equipment model, the labour and materials it covers, whether a system flush and magnetic filter are included, what happens to old equipment removal and disposal, and what's excluded — an unexpected gas pipe upsizing or asbestos-containing material discovered during removal, for example, which can't always be known before work starts. It should also state who's completing the Gas Safe or OFTEC notification and Benchmark commissioning record, since that's the paperwork that protects both the manufacturer's guarantee and the property's compliance history when it's sold. A vague one-line quote makes comparing genuinely different offers difficult, because two prices that look similar can cover very different scopes of actual work.
- Specific make and model, not just "combi boiler"
- Flush and magnetic filter stated as included or excluded
- Old equipment removal and disposal covered
- Notification and Benchmark record responsibility stated
Heating systems in shared student and let properties
Properties let to multiple students or sharers around Bath see heavier and less consistent hot water demand than a single-family household — several showers in quick succession most mornings rather than staggered use through the day — which makes cylinder or combi sizing based on family occupancy figures unreliable. HMO licensing conditions, where they apply, can also set specific requirements around heating provision and appliance safety beyond the standard landlord gas safety record. Controls matter too: a programmable thermostat that tenants can't easily override into leaving heating running constantly, or a system that's simple enough not to generate repeated call-outs over misunderstanding the controls, saves both fuel costs and avoidable landlord admin. We size and specify let properties against realistic occupancy patterns rather than a single-family default.
Bath's A36 corridor and what it means for scheduling
Properties along or near the A36 corridor around Bath are generally straightforward to reach without the access constraints of side lanes or unclassified roads further off the main network, which helps with scheduling deliveries of boilers, cylinders or oil tanks to a fixed slot. It doesn't change the technical requirements of the job itself, but predictable access does mean less contingency time needs building into a visit, and it makes coordinating a delivery with an installation date more reliable than on a property with a difficult final approach. We still confirm any specific parking or loading restriction on the immediate street before a job, since a fast main road doesn't guarantee easy stopping right outside the property.
Radiator sizing after lowering the flow temperature
Running a boiler at a lower flow temperature — typically 55°C or below rather than the old default of 70-80°C — improves condensing efficiency measurably, but it also reduces the heat output of every radiator in the house, because a radiator's output falls roughly with the square of the temperature difference to the room. Radiators sized correctly for a 75°C flow can end up unable to heat the room properly at 55°C unless they're upsized or supplemented. We check each radiator against the lower design flow temperature before recommending it, and where a room falls short we look at whether a larger single panel, a double panel, or an additional radiator on that circuit closes the gap, rather than pushing the flow temperature back up and giving away the efficiency gain.
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.
Other boiler services in Bath
- Boiler Installation in BathNew combi, system and regular boiler installations for gas and oil homes — fixed prices, manufacturer warranties.
- Gas Boiler Installation in BathGas Safe registered installations and upgrades for mains gas homes across Bath, Radstock and Wells.
- Boiler Servicing in BathAnnual boiler services to keep your warranty valid and your home safe, efficient and warm.
- Maintenance & Repair in BathDiagnostics, repairs and breakdown call-outs for gas and oil boilers across BA and BS postcodes.
- Landlord Gas Safety Certificates in BathAnnual CP12 landlord gas safety records issued on the day, for single lets, HMOs, holiday lets and whole portfolios.
- Oil Boiler Servicing in BathOFTEC registered annual servicing for oil boilers, including nozzle, electrode, filter and smoke test work on off grid homes.
- Oil Boiler Repairs in BathOil boiler breakdown repairs across rural Somerset, from lockouts and sooting to pump, photocell and control faults.
- Oil Tank Replacement in BathBunded oil tank replacement and relocation with base preparation, new supply line and OFTEC paperwork on completion.
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