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Boiler installations & replacements

Boiler installations and replacements in Bath

A boiler on its last legs, or heating that can't keep up with your home? We survey your property, explain your options clearly and install a new boiler that fits the job. The old one goes with us, and the place is left clean and tidy.

Why Bath boilers fail and need replacing

Georgian elegance meets hard water and tight spaces

Bath's historic buildings — Georgian crescents, Victorian villas, stone-built cottages — are beautiful but they present real heating challenges. Many have been converted into flats or holiday lets, which means the boiler was never sized for how it's now being used. A system built for a single family with one bathroom is working overtime for three or four separate units.

The water in Bath is notably hard. Over ten to fifteen years, mineral scale deposits inside the boiler's heat exchanger and in the radiator pipes force the system to work harder and harder just to deliver the same amount of heat. Your gas bills climb, the boiler runs noisier and longer, and eventually it starts to fail.

Stone properties also tend to be damp and cold at ground level. If the boiler is in a basement or cellar, condensation and poor ventilation can corrode pipework and shorten the boiler's life. We consider the location and the whole system when we quote, not just swapping one boiler for another.

Signs it's time for a new boiler, not another repair

  • It's older than 12 years and has needed a call-out twice in the last two years
  • The pilot light won't stay lit, or the boiler cuts out when demand increases
  • Radiators warm up slowly or stay cold at the bottom
  • You're paying for repairs more often than you'd save with a replacement
  • The flue is weeping black or brown staining down the outside wall

Bath properties, Bath heating problems

Walcot, Widcombe, Twerton, the Circus, Royal Crescent

Georgian terraces and the famous crescents

Four-storey or taller properties with the boiler and flue in a confined space — often a kitchen or scullery that was never designed for a modern flue. New flues need careful routing around the stone facade and neighbour boundaries. Combi boilers work well here because they take up less space and don't need a big cold-water tank in the loft.

Oldfield Park, Combe Down, Bear Flat, Lambridge

Stone cottages and converted barns

Often on a slope or perched on the hillside with restricted access. The boiler may be in a basement three metres below the front door, or up a flight of external stairs. We plan the delivery of the new boiler and removal of the old one carefully, and discuss parking with you before the day.

City centre, Bathampton, Keynsham Road, University area

Converted flats and student lets

Multiple heating systems squeezed into one building, with shared flues and condensate drains. Flat residents and landlords often ask questions about noise and vibration from a new boiler, and we fit appropriately and explain what they'll hear in normal operation.

How we fit your new boiler

From the free survey to handover, step by step

You'll know exactly what's happening at each stage. A straight swap in a straightforward location usually takes one day. If we're moving the boiler or working around tight access, we'll give you a timeline at the survey.

  1. Free survey and assessment

    We look at the existing boiler, the flue route, radiators and pipework. We ask about your hot water use and any plans to alter the heating. We take photos if needed and check whether the boiler position works for a new installation.

  2. Written quote with no surprises

    You get the price for the boiler, flue work, pipework and any extra work (like a powerflush or new valves) before we start. Nothing is added later unless you ask us to.

  3. Installation day

    Furniture and floors are protected. We drain the system, remove the old boiler, mount and connect the new one, and fit the flue, gas line, water and condensate pipework.

  4. System clean and commission

    We flush out the radiators, fit a magnetic sludge filter, add inhibitor to protect the system and test all gas connections for safety. Every radiator is bled and checked for heat.

  5. Handover and guarantee

    We show you how the controls work and set the heating to your preference. The boiler is registered with the manufacturer and the installation is notified to Gas Safe. You then have 5 years cover on the boiler and fittings.

What moves the price

Five factors that affect the cost of your Bath boiler installation

We don't quote blindly over the phone. Each Bath property is different and these are the things we assess at the survey to get you an accurate price.

Boiler type and size

A combi (no cylinder needed), a system boiler (with a cylinder), or a regular boiler and tank all cost differently. We size it for your number of bathrooms and how many people use hot water at once.

Whether it stays or moves

Fitting the new boiler in the same place as the old one is the quickest job. Moving it to a different wall, a higher floor or a completely different room means more pipework, more flue work, and longer on site.

Access and location

A basement boiler, a cellar access, or a property on a steep street with tight parking affects how we deliver and fit. We factor in the time and the route for the new boiler and the old one to leave safely.

Flue design and routing

Stone properties and terraces have strict rules about flue position and distance from neighbours' windows. A plume kit or a vertical route costs more than a simple horizontal flue, but it's necessary and it's done right.

Radiators and pipework condition

Hard water means scale and sludge build-up. We powerflush if needed before the new boiler goes on, so it doesn't inherit a dirty system. New valves or radiators are discussed at the survey and priced separately.

If the survey reveals something that changes the scope — damp, blockages, old valves that need replacing — we tell you then and give you a choice. You'll have the final price in writing before we start work.

Parking and access in Bath

Getting the van and the boiler to your door

Much of Bath's city centre and crescents are permit zones or have restricted loading. Tell us your postcode and parking situation when you book, and we'll plan where to park the van and how to move the new boiler and the old one in and out safely. If you're on a steep street or have a long flight of stairs, we'll discuss the safest way to handle it before the day.

For basement and cellar properties, we assess the best route and whether we need to remove windows or doors temporarily to get the boiler in. We always put them back properly afterwards.

Areas of Bath we cover

  • City centre
  • Walcot
  • Widcombe
  • Twerton
  • The Circus
  • Royal Crescent
  • Oldfield Park
  • Combe Down
  • Bear Flat
  • Lambridge
  • Bathampton
  • University

Not listed? Send us your postcode and we'll confirm straight away if we can help.

Questions about Bath boiler installations

Answers to the questions we get asked most

How long does a new boiler installation take in Bath?

A straightforward swap of an old boiler for a new one in the same location usually takes one day. If we're moving the boiler, changing the flue route or the property has tight access, we'll tell you the timeline at the survey. Most jobs in Bath are completed within one working day, and if we need longer we'll discuss that before we start.

Do I need planning permission for a new boiler in Bath?

Most boiler replacements don't need planning permission. If you're changing the location significantly or altering the external flue in a listed building or conservation area, you may need to notify the council. We check this as part of the survey and let you know if anything is needed. If you're in a listed property, we have experience fitting modern boilers while keeping the facade intact.

Will a new boiler be loud?

Modern boilers are quieter than older ones. You'll hear the heating system running — water flowing through pipes, the burner ignition — but nothing like the banging and whistling of a tired boiler. If you live in a flat or a terrace and noise matters, tell us at the survey and we'll position and mount the boiler to minimise vibration.

What happens if I need to move the boiler to a different room?

It's more involved than a straight swap. We'll need to run new gas, water and heating pipes and reroute the flue. At the survey we check the best route and whether you need a longer flue or extra supports. It costs more and takes longer, but we'll price it clearly before we start.

How do I know what size boiler my Bath home needs?

It depends on the number of radiators, your hot water demand, how many bathrooms you have and how many people use hot water at peak times. A flat with one bathroom needs a smaller boiler than a three-storey Georgian terrace. We assess this at the survey and recommend the right boiler type and output for your actual usage, not a generic size.

What's the 5-year guarantee cover?

The manufacturer guarantees the boiler itself for a set period (usually 10 years for parts, conditional on annual servicing). The 5-year guarantee we offer covers the boiler and all the fittings we fit — pipe connections, valves, flue, the works. If anything fails due to faulty workmanship, we repair or replace it at no cost during those five years.

Get your free Bath boiler survey and quote

Arrange a visit and we'll look at your boiler, explain your options and give you a firm price before any work starts. No callout charge, no obligations.