Cost of Hot Water Cylinder Replacement in Bath (2026)
A typical hot water cylinder replacement job in Bath costs £1,080 at the budget end and £2,640 for a full-spec install, per cylinder. Outside peak season you'll usually get booked in within two to three weeks; summer runs tighter.
About hot water cylinder replacement in Bath
Bath is a medium town of around 95,000 in Somerset. The housing is mostly period cottages, Edwardian villas and 1930s semi-detached housing alongside newer commuter developments. That matters: older properties usually mean more pipework, rewiring and retrofit surprises, while newer builds in districts like BA1, BA2 tend to be quicker jobs with standardised fittings. Local trade prices sit on the expensive side for UK trade work. That's mostly wage levels plus the cost of running a van and a yard in and around Somerset.
Bristol and Bath run hot. Step outside them and into Devon, Cornwall or rural Somerset and the supply thins out fast, especially for specialist trades like heat pumps or unvented cylinders. Lead times get longer the further west you go, and most firms will add travel if you're past the nearest big town.
Heating is a regulated trade. Gas Safe for anything gas, OFTEC for oil, HETAS for wood burners and stoves, MCS for heat pumps. The bulk of the price is the engineer's time, roughly £300 to £500 a day in 2025, plus the appliance. A summer quote on the same job is usually 10 to 15 percent less than a winter emergency one, so don't leave an ageing boiler until October.
Hot Water Cylinder Replacement cost breakdown in Bath
Vented 150L cylinder like-for-like
Unvented 210L cylinder with G3 cert
Unvented 300L with pump, expansion and pipework re-routing
What affects the price of hot water cylinder replacement in Bath?
- Unvented vs vented cylinder
- Cylinder capacity (150L vs 300L)
- G3 certification for unvented
- Pipework changes
Bath vs the UK average
Bath sits in the heating & boilers market at a cost multiplier of 1.20× the UK national average. That puts Bath hot water cylinder replacement prices at £1,080–£2,640 versus the UK average of £900–£2,200 per cylinder.
Hot Water Cylinder Replacement cost calculator — Bath
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What's typically included in a hot water cylinder replacement quote
- Supply of new cylinder
- G3 Building Regulations certification (unvented)
- Removal of old cylinder
- Pressure and safety testing
Frequently asked questions
How much does hot water cylinder replacement cost in Bath?
Budget £1,080 to £2,640 per cylinder for hot water cylinder replacement in Bath. Prices here are around 20% more expensive than the UK average. What moves a quote inside that range is mostly heating contractor day rates in Somerset and the specific material list for your job.
How long does hot water cylinder replacement take in Bath?
A straightforward hot water cylinder replacement job in Bath runs to 1 day. You can lose days to things outside the contractor's control — parts on backorder, awkward access, or a firm slotting your job around existing bookings. Ask for a start date and expected finish up front.
What's included in the price of hot water cylinder replacement in Bath?
A proper hot water cylinder replacement quote in Bath should cover: Supply of new cylinder; G3 Building Regulations certification (unvented); Removal of old cylinder; Pressure and safety testing. If any of those aren't itemised on your quote, push back and ask. A written guarantee with a clear warranty period is reasonable to expect on this kind of work.
Is hot water cylinder replacement cheaper in Bath than the UK average?
Hot Water Cylinder Replacement in Bath runs around 20% more expensive than the UK average. The UK-wide benchmark for this job is £900 to £2,200 per cylinder; Bath quotes tend to land between £1,080 and £2,640. Handy to know what the average actually looks like before you price round.
Do I need planning permission for hot water cylinder replacement in Bath?
Most hot water cylinder replacement jobs don't need planning permission, but Building Regulations and any manufacturer or trade-body sign-off still apply. If the property sits in a conservation area or is listed, ring Somerset Council before you book anything in. It's a free call and saves a world of grief later.
See all hot water cylinder replacement prices across the UK or browse all tradespeople costs in Bath.