NK Gas Service & Repairs
Gas Safe registered boiler installation across Birmingham. Worcester Bosch, Vaillant, Ideal and Baxi supplied and fitted. Fixed quote, same-day fitting, old boiler removed.
From £1,800New boiler fitted
"Superb from first call to last screw. New Vaillant installed in our Handsworth house — engineers were tidy and explained everything."
"Used NK Gas for three Birmingham HMOs now. Consistent quality, fair prices, and the CP12 certificates arrive same day. Excellent."
"Old back boiler finally gone — the space freed up is incredible. New combi works perfectly and the heating bills have already dropped."
Birmingham's housing stock is one of the most varied of any city in the UK — and that variety means we encounter a very wide range of heating system ages and types across the B-postcode area. Handsworth and Lozells have dense streets of Victorian terraces, many of which were converted to gas central heating decades ago and are now running on ageing or end-of-life boilers. Erdington, Perry Barr and Kings Heath have streets of 1930s and 1950s semi-detached properties, often with original back boiler systems behind gas fires that haven't been serviced in years. And areas like Selly Oak, Northfield and Harborne have a growing proportion of student and rental HMO properties where landlords need fast, reliable boiler replacements to keep tenants comfortable and legally compliant.
We reach Birmingham from our Darlaston base in 7–10 miles depending on the area, typically 20–30 minutes via the A41 or M6 spur. We cover the western and northern Birmingham B-postcode areas regularly — including Handsworth (B18–B21), Erdington (B23), Perry Barr (B20, B44), Aston (B6), and south Birmingham including Selly Oak (B29) and Northfield. All quotes and survey visits are free and carry no obligation.
One of the most common scenarios we find across Birmingham's older housing is back boilers — floor-standing or wall-mounted units located behind gas fires, often installed in the 1970s and 80s. These are now obsolete and parts are increasingly difficult to source. When a back boiler fails in a Birmingham property it's almost always more cost-effective to replace it with a modern high-efficiency combi than to attempt a repair. The installation involves removing the old back boiler, capping the existing flue, fitting a new boiler in a more practical location (typically the kitchen or utility room), and replumbing the central heating circuit. We carry out these conversions regularly across the Birmingham area.
For Birmingham landlords managing HMOs or multi-unit portfolios, we can schedule boiler installations across multiple properties and coordinate with tenants directly. We provide full Gas Safe certification and Building Regulations documentation for each installation, and can combine the boiler installation visit with an annual service and CP12 gas safety certificate to reduce the number of engineer call-outs per property.
Any of these? A new boiler is probably more cost-effective than another repair.
Most boilers have a design life of 10–15 years. Beyond that, efficiency drops and components fail more frequently — the economics of repair versus replace shift significantly.
If your Birmingham boiler has needed more than one repair in the past 18 months, the cumulative cost of keeping it running often exceeds the cost of a new installation.
Older G-rated and low-efficiency boilers waste 25–40% of the gas they consume. A modern A-rated boiler runs at 90%+ efficiency — the saving can pay for the installation over time.
Cold spots on radiators, slow heat-up times, inconsistent hot water temperature or pressure — these are signs an aging boiler is no longer performing to the level your home needs.
Manufacturers stop producing parts for older models — typically 10–12 years after production ends. A boiler that can't be repaired for lack of parts has to be replaced.
Any boiler presenting with CO alarm activations, yellow/orange flames, sooting around the casing or unfamiliar odours should be assessed immediately. These are safety issues, not just efficiency ones.
The right boiler depends on your property type, number of bathrooms and hot water demand — not just price.
Not sure which is right? We assess your Birmingham property and advise on the best solution — at no charge, with no obligation.
Gas Safe registered. Fixed prices. 193+ five-star reviews. 7–10 miles depending on the area from our base.
Every boiler installation is carried out by Gas Safe registered engineers. Legally required — and verifiable online at GasSafeRegister.co.uk.
Full itemised quote provided before any work starts. The price we quote is the price on the invoice. No hourly rates, no hidden extras.
7–10 miles depending on the area from our Darlaston base. Fast survey appointments and installation scheduling across Birmingham.
Verified reviews across Google, Checkatrade and TrustATrader from homeowners and landlords across the West Midlands and Staffordshire.
Worcester Bosch, Vaillant, Ideal, Baxi, Glow-worm and Viessmann — we supply and install all major brands with full warranty registration.
Gas Safe certificate, manufacturer warranty registration, and Building Regulations documentation — all issued same day as the installation.
We cover Handsworth, Perry Barr, Erdington, Northfield, Selly Oak, Harborne, Kings Heath, Acocks Green and the surrounding B-postcode area postcode area.
Gas Safe registered #568305 · 193+ five-star reviews · Fixed price · Old boiler removed · Same-day Gas Safe certificate
Call 07404 922458 WhatsApp UsAll handled by the same Gas Safe registered engineer (#568305), right across Birmingham and the surrounding area.