Boiler Repair in Windsor
No heating, no hot water or a boiler flashing an error code?
Boiler repair in Windsor starts with a £60–£90 diagnostic callout. Common fixes — diverter valve, expansion vessel, pump or PCB — cost £200–£550 including parts. By UK law, any work on a gas boiler must be carried out by a Gas Safe registered engineer.
Boiler Repair services in Windsor
Boiler repair starts with a diagnostic call-out: the engineer reads any error/fault codes, inspects the pressure gauge, checks the pump, diverter valve, PCB, expansion vessel and gas supply, then quotes for the parts required.
Any work on a gas appliance must be carried out by a Gas Safe registered engineer — it is a legal requirement in the UK. Ask to see the engineer's Gas Safe ID card; the licence number can be verified on the public register.
Repair vs replace: as a rule of thumb, if your boiler is 12+ years old, a major component failure (heat exchanger, PCB) often means replacement is more economic. For boilers under 8 years, repair almost always wins. The Boiler Upgrade Scheme offers £7,500 towards air source heat pumps if you are considering switching.
The 33 companies listed for Windsor are all incorporated at Companies House. Browse the profiles below, check their address and Company Number, and request a free quote.
Top boiler engineers in Windsor
Other plumbing services in Windsor
Frequently asked questions — Boiler Repair in Windsor
How much does boiler repair cost in Windsor?
A diagnostic callout is typically £60–£90 (often refunded against the repair). Common fixes — diverter valve, expansion vessel, pump — fall in the £200–£550 range including parts. PCB replacement is usually £300–£550.
Repair or replace my boiler?
If your boiler is under 8 years old, repair almost always wins. Between 8 and 12 years, it depends on the part. After 12+ years, a major component failure (heat exchanger, PCB) usually means replacement is the better economic choice — and a new A-rated boiler can cut your gas bill by 15–25%.
Do all plumbers in Windsor work on gas boilers?
No. By law, any work on a gas appliance must be carried out by a Gas Safe registered engineer. The 33 companies listed for Windsor include heating engineers; before booking gas work, ask to see the Gas Safe ID card and verify the licence number on the public register.
Am I eligible for the Boiler Upgrade Scheme?
The UK Boiler Upgrade Scheme offers £7,500 towards an air source heat pump or £5,000 towards a biomass boiler (in some rural areas). You need a valid EPC with no outstanding loft/cavity insulation recommendations. ECO4 may help if your household receives qualifying benefits — check GOV.UK for current eligibility.
What is a boiler service and how often do I need one?
An annual boiler service costs £80–£150 in Berkshire and is required to keep most manufacturer warranties valid. The engineer cleans the combustion chamber, checks gas pressure, inspects seals and flue, and runs a flue gas analysis.