25 Best Heating Engineers in Harrow for 2026

Heating engineers covering Harrow, Arise Heating & Plumbing Ltd handles boiler repairs, installations and general plumbing work for local households. The firm has built up a substantial track record locally, reflected in 212 reviews averaging a full five stars on Google. Details of services and contact information are available via its website.

Commercial Gas Systems Ltd covers the full range of commercial gas work in Harrow, from boiler installation and repair through to commercial kitchen and catering gas inspections. The company also issues gas safety certificates, making it a practical single point of contact for compliance and maintenance across commercial premises. A 4.9 rating from 117 Google reviews reflects consistent feedback from its client base.

Ahmed Heating Plumbing works as a heating engineer covering Harrow, handling boiler repairs, installations and general plumbing faults. Its 4.9 rating from 108 reviews suggests consistency across jobs both large and small. The firm operates from the HA7 area, serving households nearby without straying into unrelated trades.

A boiler that won't fire up on a cold morning, or a radiator that never quite gets warm, is the sort of call Annett Heating in Harrow deals with regularly. The firm covers repairs, servicing and installations, and has built a strong local following, reflected in a 5 star average from 73 reviews.

MAK Gas Ltd is a Harrow-based heating engineer covering boiler installation, servicing, and repairs alongside underfloor heating, power flushing, and air conditioning. The company also issues gas safety certificates and fits smart controls, giving it a fairly broad scope for a local outfit. Across 75 Google reviews, it holds a rating of 4.9.

Boiler installation, servicing, and central heating repairs are the core work at VHL Mechanical, a heating engineering firm operating in Harrow. The business holds a 4-star rating across 475 Google reviews, reflecting a consistent record of completed work in the area. Enquiries relating to HA3 and the surrounding districts can be directed through the company's website.

IJ Heating & Gas Ltd is a heating engineering firm based in Harrow, covering domestic and commercial gas and heating work across the local area. The company handles installations, servicing, and repairs, giving residents and businesses in the borough a local point of contact for their heating needs.

Heating engineers covering Harrow and the surrounding HA3 area, Heating & Plumbing London handles boiler repairs, servicing and central heating installations. The firm has built a strong local reputation, reflected in a five-star average from 51 reviews. Work is arranged directly through its website for households needing heating systems kept running through the colder months.

West London Gas Ltd is a heating engineering firm based in Harrow, serving residential and commercial clients across the west London area. The company covers gas installation, servicing, and repair work, with a postcode of W7 2QE placing it well within reach of the surrounding boroughs. Further details on the services offered are available at westlondongas.com.

A perfect 5 out of 41 reviews sets Neil Guerin apart among heating engineers serving Harrow. The business covers boiler and central heating work, with the consistency of that feedback suggesting reliability over one-off jobs. Further details are available on its website.

Calls to Collide Group in Harrow tend to start with a communal heating system playing up, whether that's a heat interface unit failing to deliver hot water or a block reporting inconsistent temperatures. Engineers diagnose and repair HIUs directly rather than replacing whole systems unnecessarily. The firm holds a 5 rating from 37 reviews, reflecting consistent outcomes on this specific work.

Gas safety certificates, boiler servicing, and electrical installation inspections form the core of what Landlord Building Certificates offers to properties across Harrow. The company also carries out fire alarm certification, PAT testing, and energy performance certificates, covering a broad range of statutory compliance checks under one roof. A Google rating of 4.9 from 34 reviews reflects consistent reliability across its work.

Rated 5.0 by local customers, Mirauta Ltd operates as a heating engineer firm serving Harrow and the surrounding area. The company covers installation, servicing, and repair work across residential properties, with a postcode base in HA3 that places it well for calls across the borough. Straightforward in scope, it offers a focused alternative to larger multi-trade contractors.

Dorchester Heating Solutions works mainly on Harrow's older terraced and semi-detached housing stock, where ageing boilers and outdated pipework often need careful assessment before replacement. The firm handles installations, servicing and repairs, with jobs frequently involving upgrades to more efficient systems. A 4.6 rating from 27 reviews reflects consistent standards across this type of work.

Boiler breakdowns and servicing form the core of DFB Heating Services' work in Harrow, alongside central heating repairs for local households. The firm holds a 5-star rating from 11 reviews, reflecting consistency in diagnosing faults rather than simply replacing parts. Enquiries typically come through its website for both emergency callouts and routine annual checks.

Snug & Chill Limited covers heating engineering work for residential and commercial properties in Harrow. The company handles boiler installation, servicing, and repair alongside broader central heating work. HA8 8JL places it well for clients across the borough looking for a local contractor rather than a national call-centre operation.

Boiler installation and servicing form the core of N T Ward Heating Ltd's work in Harrow, covering repairs and system upgrades for domestic customers. The firm holds a five-star rating from nine reviews, a reflection of its steady, consistent approach to routine heating faults and breakdowns rather than one-off jobs.

Gas heating engineering serves Harrow and the HA5 area, covering boiler repairs, servicing and installations. Bakir Gas Ltd has built a solid local reputation, reflected in a five star rating from eight reviews. Work is carried out by Gas Safe registered engineers familiar with the borough's housing stock.

Electric combi boiler installation and servicing covers Harrow and the surrounding area, with the company specialising exclusively in electric heating systems rather than gas. That focused scope makes it a practical point of contact for properties off the gas grid or where gas installation is not viable. The postcode SL4 4QF indicates the team also operates across parts of Berkshire.

Faulty storage and immersion heaters make up the bulk of the work here, with call-outs across Harrow covering thermostat faults, element replacement and heat retention issues on older units. Seven reviews have all returned a full five stars. The firm's site focuses squarely on this niche rather than general boiler servicing.

Calls to Reach Out Plumbing & Services Ltd often start with a boiler that's stopped firing overnight or a heating system struggling to hold pressure. Based in Harrow, the firm deals with these breakdowns alongside servicing and installation work, building on a run of five-star feedback from local customers.

Boiler breakdowns and emergency callouts form the core of M L Heating & Plumbing's work in Harrow, with cover available around the clock for households facing sudden loss of heating or hot water. Based in the HA7 area, the firm also handles routine servicing and repairs, aiming to get systems back online without lengthy waits for an appointment.

RapidFix Boiler Repair Specialists covers emergency and 24-hour boiler repair alongside next-day boiler installation, operating from Harrow in the HA7 area. The firm carries specific expertise in Vaillant boilers, making it a practical option for owners of that brand needing prompt attention. Response speed and same-brand knowledge are the clearest points of difference here.

Harrow and the surrounding HA3 area fall within SMY Property Services' reach for heating work, covering boiler repairs and general system maintenance. The firm has built a 4.6 rating from ten reviews, reflecting steady, straightforward jobs completed for local households rather than large-scale contracts.

Boiler breakdowns and replacements form the core of TOORI's work in Harrow, with call-outs also covering system servicing and repairs. The firm operates from the HA7 postcode and has built up a 4.6 rating from nine reviews. Customers can find further detail on its site before booking an appointment.