Heating & Boiler Engineers in Oxfordshire
From Oxford to Banbury, Witney and Bicester, our family-run team installs, services and repairs boilers, central heating, heat pumps and air conditioning — Gas Safe and OFTEC registered, with workmanship you can rely on.
Trusted heating engineers across Oxfordshire
We are a family-run firm of heating, plumbing and air-conditioning engineers based at High Wycombe, working throughout Oxfordshire and the home counties.
Whether you live in a period terrace in central Oxford, a market-town home in Banbury, a rural property near Witney or a new-build in Bicester, we bring the same standards to every job. Over 90% of our work comes from referrals — and that only happens when the work is done properly the first time.
We believe correct installation is the single most important thing, and the job is not finished until the paperwork is done. Every gas appliance is fitted and certified by a Gas Safe registered engineer, and our oil work is OFTEC registered.
Oxford, Banbury, Witney & Bicester
We cover Oxfordshire's main towns and the villages in between — call us to confirm we can reach your postcode.
Oxford — boiler installation, servicing and repairs for the city's many older and listed properties, plus modern central heating and smart controls.
Banbury — full heating systems, power flushing and warm-air upgrades for homes across the north of the county.
Witney — oil, LPG and gas boilers for rural and off-grid properties, along with air source heat pump installations.
Bicester — efficient boilers, central heating and air conditioning for new and growing homes.
Three reasons Oxfordshire homeowners call Smith's
Accredited & certified
Worcester Bosch Gold Accredited since 2003, Gas Safe and OFTEC registered — with full certification on completion.
Referral-led reputation
Over 90% of our work comes from referrals, because correct installation is the single most important thing we do.
Whole-home expertise
Gas, oil and LPG boilers, central heating, power flushing, heat pumps and air conditioning — one trusted team.
Our services across Oxfordshire
From a single boiler service to a full system upgrade, we cover everything your home's heating needs.
Boiler installation
Gas, oil and LPG boilers, with Worcester Bosch warranties up to 10 years on gas and 7 years on oil.
Learn more →Servicing & repairs
Annual servicing, fault-finding and safety certificates to keep your system running safely and efficiently.
Learn more →Central heating
New systems, upgrades and smart controls from Honeywell, Drayton, Nest, Bosch EasyControl and Drayton Wiser.
Learn more →Power flushing
Kamco CF90 and Adey MagnaCleanse cleansing with Worcester Bosch-recommended chemicals from Sentinel and Adey.
Learn more →Air source heat pumps
Vaillant aroTHERM heat pumps, with the £7,500 Boiler Upgrade Scheme grant on qualifying installations.
Learn more →Air conditioning
Bosch Climate systems — plan yours online with our air conditioning configurator.
Learn more →Common Oxfordshire charges
All prices are indicative, exclude VAT and are subject to survey. Call us for a firm quote on your property.
| Service | From |
|---|---|
| Gas boiler service | £105 + VAT |
| Oil boiler service | £180 + VAT |
| Gas safety certificate | £130 + VAT |
| Unvented cylinder service | £95 + VAT |
| Air source heat pump service (annual) | £250 + VAT |
| Labour (min 1 hour) | £100/hr + VAT |
Oxfordshire FAQs
Do you cover the whole of Oxfordshire?
Yes. We regularly work across Oxfordshire, including Oxford, Banbury, Witney and Bicester, as well as the surrounding villages. Call us on 01494 328382 to confirm we can reach your postcode.
Can you install a Worcester Bosch boiler in Oxfordshire?
Yes. We are a Worcester Bosch Gold Accredited Installer (since 2003), which means qualifying Worcester Bosch boilers we install in Oxfordshire can carry a manufacturer warranty of up to 10 years on gas and up to 7 years on oil.
Do you fit air source heat pumps in Oxfordshire?
Yes. As a Guild of Master Heat Engineers approved installer we fit Vaillant aroTHERM air source heat pumps across Oxfordshire, and qualifying installations may attract the £7,500 Boiler Upgrade Scheme (BUS) grant. Every install is subject to a survey.
Heating help in Oxfordshire?
From Oxford to Bicester, we're ready to quote, install, service or repair. Get in touch for a free, no-obligation quote.