New boilers fitted across Paisley · warranties to 12 years
We replace old and failed boilers across Paisley and Renfrewshire. You get a fixed written quote with no pressure sales visit, a correctly sized boiler for your property, and in most cases the swap is completed in a single day with the heating back on the same evening.
New boiler installation in Paisley, fitted in a day
A straight combi-for-combi swap in a Paisley flat or semi is normally a one-day job. Conversions from an old back boiler or a vented system with a tank in the loft take one to two days because the cylinder and feed tanks are removed and the pipework reworked. Either way we protect floors, take the old appliance away and leave the system clean, balanced and commissioned.
- Combi, system and regular boiler replacements
- Back boiler and vented system conversions
- Correct sizing on heat loss, not guesswork
- Magnetic filter and chemical flush included
- Smart controls and TRVs fitted on request
- Building standards notification and warranty registration
How much does a new boiler cost in Paisley?
Price depends on the boiler output, the brand and how much pipework changes. A like-for-like combi replacement is the cheapest option; a system conversion costs more because of the extra labour. We quote one fixed figure that includes the boiler, flue, filter, flush, controls, removal of the old unit and all certification — nothing is added afterwards.
We fit Worcester Bosch, Vaillant, Ideal, Baxi and Viessmann, with manufacturer warranties from 7 up to 12 years depending on the model and an annual service to keep the guarantee valid.
Worcester, Vaillant and Ideal - which brand for a Paisley home?
Worcester Bosch and Vaillant sit at the top of our fitting list for reliability and parts availability, with warranties up to 12 and 10 years respectively when the system is protected with a filter. Ideal offers the best value on a straight combi swap in a flat, and Baxi and Viessmann cover the middle ground. We quote two or three options side by side with the warranty length, output and price so you can compare like for like.
Brand matters less than sizing and installation quality. An oversized Worcester in a two-bed Paisley flat will short-cycle and cost more to run than a correctly sized Ideal, so we size on heat loss and hot water demand every time.
Signs your Paisley boiler needs replacing rather than repairing
Repeated breakdowns in one winter, obsolete spare parts, rising gas bills, radiators that never quite heat and a boiler older than twelve years all point to replacement. Older non-condensing units in Paisley sandstone properties can run below 70% efficiency; a modern A-rated condensing boiler with correct controls usually recovers a meaningful part of that in the first winter.
Boiler replacement across Renfrewshire
We install throughout Paisley, Renfrew, Johnstone, Elderslie, Linwood, Erskine, Bishopton, Bridge of Weir, Houston, Barrhead and Neilston, and across Glasgow and Lanarkshire. Landlords and letting agents can have a replacement, a landlord gas safety certificate and an EICR arranged in the same visit window.
Book boiler replacement in Paisley
Call for a price over the phone, or send us your postcode and we will confirm the earliest appointment.
- Monday – Friday: 8:00 – 18:00
- Saturday: 9:00 – 16:00
- Sunday: Emergency call-outs only
Boiler Replacement Paisley — FAQs
How long does a boiler replacement take in Paisley?
A like-for-like combi swap is normally one day. A conversion from a back boiler or a tank-fed system usually takes one to two days.
How much is a new boiler in Paisley?
It depends on output, brand and pipework changes. We give one fixed written quote covering the boiler, flue, filter, flush, controls, removal of the old boiler and certification.
Which boilers do you install?
Worcester Bosch, Vaillant, Ideal, Baxi and Viessmann, with warranties up to 12 years on selected models.
Can you replace a back boiler in a Paisley house?
Yes. We remove the back boiler and fire surround, cap the chimney where needed and install a wall-hung combi or system boiler with new pipework.
Do you notify building standards and register the warranty?
Yes — every installation is notified as a Gas Safe registered business and the manufacturer warranty is registered in your name.
Do you replace boilers outside Paisley?
Yes — Renfrew, Johnstone, Linwood, Erskine, Barrhead, Bridge of Weir and the rest of Renfrewshire, plus Glasgow and Lanarkshire.
Nearby areas we cover
Our engineers work across Renfrewshire every day, so the same fixed pricing and response times apply in the towns around Paisley.