Terrace & bay-window heat loss
Pollokshields and Crossmyloof terraces lose heat through large front bays. We size output for room volume and recommend controls that cut bills without under-heating bedrooms.
Glasgow West End · G11–G15 · G60–G62
Boiler Installation — Replacement
Fixed price boiler installation, replacement & repair throughout Glasgow from £1,299.
Postcodes We Cover
G11
G12
G13
G14
G15
G20
G60
G61
G62
G81
Gas Safe Engineers
Next Day Install
Up to 12Yr Warranty
From £1,299
Fully installed inc. VAT
Next Day Install
In most cases
Gas Safe Registered
Fully certified engineers
South Areas
All 20 Areas We Cover in Glasgow South Side
Click your area for a local fixed price quote
Shawlands
G41
Pollokshields
G41
Govanhill
G42
Cathcart
G44
Giffnock
G46
Newton Mearns
G77
Govan
G51
Cardonald
G52
Clarkston
G76
Barrhead
G78
Glasgow District
South
Side
G41
G42
G44
G46
G77
G51
G52
G76
G78
G53
20 Areas · Full Coverage
£1,299
From
Next Day
Install
All areas · fixed price from £1,299 fully installed · Call free: 0800 433 2010
What We Do
Our Services in Glasgow
Boiler Installation
New boiler fully installed from £1,299. Fixed price, next day.
Urgent
Emergency Repair
Emergency callout across Glasgow. Gas Safe engineers.
Boiler Repair
Fast, fixed-price boiler repair. Diagnosis from £60.
Annual Service
Annual boiler service from £95. Gas Safe certified.
Glasgow coverage
We Cover All 5 Glasgow Districts
Glasgow South Side is one of five hub districts we cover. Every Glasgow G-postcode is within our reach.
Coverage Area
Glasgow South Side
Select Your District
Glasgow West End
G11–G15 · G60–G62 · 20 Areas
Glasgow City Centre
G1–G5 · G9 · 20 Areas
Glasgow South Side
G41–G46 · G51–G53 · 20 Areas
Glasgow East End
G31–G34 · G40 · G69–G79 · 20 Areas
North Glasgow
G20–G23 · G63–G68 · 20 Areas
Local specialists
Understanding South Side Properties
Bay-window terraces, Victorian semis in Shawlands and post-war estates in Pollok need boilers matched to property type — not a one-size package.
Family homes & multiple bathrooms
Semis in Giffnock and Newton Mearns often need higher hot-water demand. We advise when a combi is right — or when a system upgrade is the honest answer.
Estate access & parking
Nitshill, Pollok and Govan estates have varied parking layouts. We confirm engineer arrival times so you are not waiting with no heating.
Why local expertise
Why South Side Chooses Local Engineers
Residents deserve a Glasgow team that knows their postcode — not a national firm routing you through a call centre.
Deep local knowledge
South Side G41–G53 is one of our busiest districts — we know typical pipework in tenements versus 1930s semis and quote accordingly.
Rapid response
Winter breakdowns in Shawlands, Govanhill and Cathcart are prioritised with same or next-day slots where possible.
Safety first
All work by Gas Safe engineers. Magnetic filters, flushing and warranty registration included on standard installs.
Boiler health check
Signs to Watch in South Side
Radiators hot at top but cold at bottom
Often air or sludge — a flush or service can restore efficiency before you replace the boiler.
Boiler switching off in cold weather
Could be condensate freezing on external pipes — common in exposed South Side gardens.
Kettling (rumbling like a kettle)
Scale build-up — service now to avoid heat exchanger damage later.
Unexplained spike in gas bills
Inefficient boilers cost more to run — compare a fixed-price upgrade from £1,299.
Glasgow G-postcodes only
Glasgow South Side Areas We Cover
See South Side areas we cover — Shawlands, Pollokshields, Govan and 17 more neighbourhoods with local boiler help.
G41–G46 · G51–G53 · 20 local areas
Why OBC
Why Glasgow South Side Chooses OBC
Fixed Price Guaranteed
No surprises. The price we quote is the price you pay — every time.
Gas Safe Registered
Every engineer is Gas Safe certified. Your safety is our absolute priority.
Next Day Installation
New boiler installed in as little as 24 hours. Ready when you need us.
Up to 12 Year Warranty
Complete peace of mind. Manufacturer warranties registered in your name.
30,000+ Happy Customers
Up to 12 Year Warranty
Gas Safe Registered
Who we are
Glasgow's Trusted Gas Safe Boiler Specialists
The Online Boiler Company was founded in Glasgow in 2017 with a simple mission: make boiler installation honest, fast, and fairly priced.
Our locally-based Gas Safe registered engineers serve Glasgow South Side with transparent, fixed pricing. The price we quote is the price you pay, every time — no hidden call-out charges or unexpected fees.
Since 2017 we've grown to serve over 30,000 customers across every G-postcode in Glasgow, earning an Excellent rating on Trustpilot and winning multiple industry awards.
Real customers
Excellent · 30,000+ Happy Customers
Trusted in East End
Annual boiler service
“Booked our annual Gas Safe service online — engineer arrived on time, explained everything clearly and left a full certificate. Great to use a company that actually covers South Side G-postcodes properly. Will book again next year without hesitation.”
Michelle O'Brien
Mount Florida · G42
Boiler installation
“We got a few quotes for our new boiler and found The Online Boiler Company were one of the best prices, but also the easiest to deal with. I emailed at 8:30pm and got an immediate response. The staff are friendly and efficient, the Gas Engineer was very helpful and tidy. 10/10.”
Samantha Brown
Pollokshields · G41
Boiler installation
“Excellent. The whole installation was arranged through WhatsApp with zero hassle — just a couple of pictures of my old boiler, then an accurate up-front quote with no surprises. Engineers arrived on time, were very friendly and did a fantastic job. Not a bit of mess left. I recommend this company without hesitation.”
Mr Patel
Shawlands · G41
See Us in Action
Watch How We Work Work
See why thousands of Glasgow homeowners trust The Online Boiler Company for their boiler installation, repair and servicing needs.
Glasgow’s #1 boiler replacement company since 2017
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Glasgow Head Office
Suite 2/3, 48 West George Street, Glasgow, G2 1BP
Gas Safe Registered No. 592810. Est. 2017.
Opening Hours · 24/7
365 days a year
Submit a quote form anytime — we handle everything remotely.
Trustpilot
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Gas Safe Registered · Fixed Price · 100% Free Quote