GLASGOW BOILER INSTALLATION
& REPLACEMENT
FROM JUST £1,299
Time-tested British reliability with solid brass hydraulics and compact cupboard fit. The trusted choice for Glasgow rental properties, flats, and family homes from £1,395 fully fitted by vetted independent Gas Safe engineers.
GLASGOW BOILER INSTALLATION
& REPLACEMENT
FROM JUST £1,299
Brand-new A-rated combi boilers direct from wholesale. 100% fixed price guarantee & next-day Glasgow installation by vetted Gas Safe engineers.
Official Scottish Accreditations & Industry Honours
Winner: Scotland Prestige Awards — Boiler Replacement Specialist
The Online Boiler Company was officially honoured in the Scotland Prestige Awards for industry-leading engineering craftsmanship, instant online fixed pricing, and outstanding customer service across Glasgow and Central Scotland.
Finalist: Scottish Home Improvement Awards — Scotland's Best Heating Company
Recognising quality across Scotland's trade industry. The Online Boiler Company is proud to be officially recognised as a 2026 Finalist for Scotland's Best Plumbing and Heating Company in the prestigious 11th Annual Scottish Home Improvement Awards.
Glasgow's #1 Installer — Worcester Bosch Group
Officially recognised as Glasgow's leading independent boiler installer for the Worcester Bosch Group. Homeowners benefit from premier wholesale boiler pricing, priority delivery, and extended manufacturer guarantee options up to 12 years.
GLASGOW BOILER PRICES & PACKAGES
100% Fixed Price Guaranteed. Boiler supplied direct with complete professional fitting arranged, including old boiler removal, chemical flush, wireless thermostat, and manufacturer warranty.
Vokera Easi-Heat Combi
Affordable, ultra-compact Italian engineering ideal for rental properties and starter flats across Glasgow.
- ✓ Free 5 Year manufacturer warranty
- ✓ Free wireless digital thermostat
- ✓ Free full chemical system flush
- ✓ Full professional installation & disposal
Ideal Exclusive Combi
Britain's favourite balance of high efficiency, compact cupboard fit, and whisper-quiet operation.
- ✓ Free 5 Year manufacturer warranty
- ✓ Free wireless digital thermostat
- ✓ Free full chemical system flush
- ✓ Compact cupboard fit & whisper quiet
Worcester Bosch 1000
Britain's premier trusted household brand. Renowned German engineering quality and legendary reliability.
- ✓ Free 5 Year Worcester Bosch warranty
- ✓ Free wireless digital thermostat
- ✓ Free full chemical system flush
- ✓ Britain's most trusted boiler brand
Navien NCB500 Smart
Next-gen smart heating with dual stainless steel heat exchangers and comprehensive 10-year factory warranty.
- ✓ Free 10 Year comprehensive warranty
- ✓ Free wireless digital thermostat + App
- ✓ Free full chemical system flush
- ✓ Stainless steel heat exchanger
TECHNICAL COMPARISON MATRIX
| Boiler Model | CH Output | DHW Flow Rate | Warranty | Cupboard Fit | Ideal Property | Fully Fitted Price | Action |
|---|---|---|---|---|---|---|---|
|
Potterton Titanium 24kW Combi PROVEN BRASS HYDRAULIC BLOCK |
24.0 kW | 10.0 L/min | 7 Years Warranty | Kitchen Cupboard Fit (700x390x285) | 1–2 Bed Tenement Flats | £1,395 |
Select Potterton → |
|
Potterton Titanium 28kW Combi POPULAR WORKHORSE COMBI |
28.0 kW | 11.5 L/min | 7 Years Warranty | Kitchen Cupboard Fit (700x390x285) | 2–3 Bed Semi-Detached Homes | £1,495 |
Select Potterton → |
|
Potterton Assure 30kW Combi SOCIAL HOUSING & LANDLORD STANDARD |
30.0 kW | 12.2 L/min | 5–7 Years Warranty | Compact Cupboard Fit | 2–4 Bed Properties & Tenements | £1,525 |
Select Potterton → |
|
Potterton Titanium 33kW Combi HIGH CAPACITY BRITISH COMBI |
33.0 kW | 13.5 L/min | 7 Years Warranty | Wall Hung Standard | 3–4 Bed Homes & Villas | £1,625 |
Select Potterton → |
GLASGOW'S SMARTEST WAY TO INSTALL A NEW BOILER
We eliminated expensive high-street showroom rents, commission-driven salespeople, and inflated middleman margins. The result? Premium A-rated boiler installations backed by up to 12 years warranty at wholesale prices.
Wholesale Direct Savings (£800 - £1,200 Cheaper)
National door-to-door sales outfits charge £2,500 to £3,500 for standard combi replacements. By purchasing in wholesale volume direct from Worcester Bosch, Ideal, and Navien, our complete installations start from just £1,299 with zero quality compromises.
24-Hour Rapid Next-Day Installation
Scottish winters don't wait, and neither should you. If your heating breaks down in the middle of January, we offer priority next-day installation slots across all Glasgow G-postcodes and ML-postcodes, 7 days a week.
Glasgow Tenement & Sandstone Specialists
Glasgow's iconic Victorian and Edwardian tenements have 600mm solid stone walls, high ceilings, and unique vertical flue challenges. Our vetted network engineers have fitted thousands of boilers across the West End, Southside, and Dennistoun.
Up to 12 Years Full Manufacturer Warranty
Enjoy total long-term security. We supply top-tier models from Worcester Bosch and Navien backed by up to 12-year manufacturer parts and labour warranties, registered directly in your name on completion day.
Free £300 Chemical Powerflush & Filter Included
Installing a new boiler onto a dirty radiator system destroys heat exchangers. Every installation includes a comprehensive chemical powerflush and high-efficiency magnetic system filter to preserve your boiler's 94%+ A-rating.
Free Wireless Smart Programmable Thermostat
Every new combi boiler package includes a digital wireless programmable room thermostat at no extra cost, allowing precision scheduling and saving Glasgow households up to £300 annually on gas bills.
THE GLASGOW TENEMENT & FLAT INSTALLATION SPECIALIST
With over 70% of Glasgow's residential fabric composed of traditional Victorian and Edwardian sandstone tenements, boiler replacement in Glasgow demands specialized knowledge that generic national installers simply don't possess.
Tenement Flue Coring & Void Compliance
Victorian blonde and red sandstone walls present extreme structural thickness. Our vetted network engineers use specialized diamond core-drilling rigs to create precise, clean flue penetrations without cracking masonry or compromising communal tenement wall integrity. Where side walls are unavailable, we install Gas Safe compliant vertical roof-space flues with mandatory inspection hatches.
Converting Bulky Gravity Tanks to High-Pressure Combi
Many Glasgow tenements still suffer from archaic low-pressure gravity systems: large cold-water cisterns perched above ceilings and copper cylinders wasting valuable hall cupboard space. We safely drain down and remove these redundant tanks, giving you back massive storage space and boosting your shower pressure to direct mains flow.
Engineered Dimensions for Traditional Cupboards
Glasgow tenement kitchens are renowned for their original built-in presses and compact pantry cupboards. We specifically recommend and stock boilers like the Ideal Logic+ (only 278mm deep) and Worcester Greenstar Compact, engineered to fit neatly inside standard 300mm kitchen units with full front-facing service access.
Internal Condensate Drainage (Zero Freezing)
During harsh Scottish winter frosts (-5°C to -10°C), externally routed plastic condensate pipes frequently freeze solid, causing new boilers to lock out with error codes. In Glasgow tenements and multi-storey flats, independent Gas Safe engineers prioritize internal condensate routing into soil stacks or waste traps, ensuring your heating never shuts down during freezing weather.
Living in a Glasgow Tenement Flat or Conservation Area?
Our remote technical team reviews photos of your existing boiler, flue position, and meters in 60 seconds to confirm 100% compliance with Glasgow City Council building regulations before any work starts.
FAST, EFFORTLESS & 100% FIXED
From initial 60-second assessment to your warm home with complete professional handover — zero salespeople, guaranteed.
60s Remote Assessment
Answer a few quick property questions or upload photos of your current boiler setup. No salesmen visit required.
Choose Fixed Package
Select from 4 premier A-rated combi options (Vokera, Ideal, Worcester Bosch, Navien) with 100% fixed upfront pricing.
Next-Day Delivery & Fitting
Independent, vetted heating engineers arrive with your brand-new boiler and complete the installation cleanly.
Flush & 10y Warranty Handover
We perform a full chemical system flush, connect your free digital thermostat, recycle the old boiler, and register your warranty.
WHAT GLASGOW SAYS ABOUT US
Read authentic feedback from Glasgow homeowners. Click any review card to inspect our live profile directly on Trustpilot or Google.
"Top class service from start to finish. Our old boiler failed right in the middle of a cold spell. Got a transparent fixed price online without any pushy salesmen visiting. The heating team arrived punctually at 8 AM, protected our carpets, and had full heating and hot water up and running by mid-afternoon."
"Delighted with the work in our tenement flat. Replacing a boiler with high ceilings and tricky flue runs can be daunting, but Online Boiler Company handled everything with complete craftsmanship. Tidy copper work, neat magnetic filter, and the exact fixed price quoted online."
"I cannot believe how easy this process was. My boiler was condemned and within 3 days I had a new one fitted at a fantastic price - easily beating their competitors. Scott & Paddy are an absolute credit to your company."
"Was a bit apprehensive in dealing online with a heating company... Scottie and Paddy arrived early, these guys know their job, very friendly explained everything... satisfied customer!"
"Absolute 5-star service from start to finish! We needed a boiler replacement at our home in Cathcart (G44)... getting a new boiler installed for an unbeatable £1,299 was incredible value. Clean, tidy, and no hidden costs."
"Ordered on Thursday afternoon fitted and running Monday lunchtime. Couldn't beat the price hundred of pounds cheaper, and for a Worcester combi boiler... complete service old boiler removed and new boiler tested before leaving."
"Instant fixed quote online on Sunday night, engineer at our tenement flat in Shawlands Tuesday morning. No salespeople, no haggling, tidy copper pipework and full digital thermostat handover."
"Replaced our aging system boiler with an Ideal combi. The fixed price promise was 100% honored — not a penny more than quoted. Clean, polite, and great communication."
FEATURED GLASGOW COMBI REPLACEMENTS
Side-by-side before and after comparisons of real combi boiler replacements supplied direct to Glasgow tenements and residential homes.
AREAS WE SERVE — ALL GLASGOW G-POSTCODES
Every G-postcode area of Glasgow covered — from Hyndland to Rutherglen, Govan to Bearsden and everywhere in between.
Glasgow G-Postcode Hub Map
West End & North West
SEE HOW WE WORK
How much does a new boiler installation cost in Glasgow? +
At The Online Boiler Company, brand-new A-rated combi boiler installations in Glasgow start from £1,299 fully fitted including VAT. Our popular Ideal Logic+ package is £1,495, Worcester Bosch Greenstar 4000 is £1,695, and Navien NCB 300 is £1,835. Every quote is 100% fixed: the price you see online is the exact price you pay, with zero hidden extras or post-installation surprises.
Can you install a combi boiler in a Glasgow sandstone tenement flat? +
Yes, absolutely. Vetted independent Gas Safe registered heating engineers specialize in Glasgow tenement flats. We routinely core-drill 600mm sandstone external walls, install vertical flues through roof spaces with mandatory inspection hatches, route condensate pipes internally to prevent freezing, and install compact boilers that fit standard 300mm tenement kitchen cupboards.
How quickly can you install my new boiler in Glasgow? +
In most cases, we offer 24-hour next-day installation across all Glasgow G-postcodes and ML-postcodes. If your boiler has completely broken down, let us know via our online quote form or call our support desk on 0141 890 2017, and we will prioritize an urgent fitting slot for you.
Are the heating engineers Gas Safe registered? +
Yes, 100%. The Online Boiler Company operates as a direct-to-homeowner wholesale boiler supplier. All physical installations, gas pipework, safety commissioning, and Gas Safe registrations are performed exclusively by vetted, independent, self-employed Gas Safe registered engineers who carry their official photo ID card at all times.
What is included in your £1,299 fixed installation price? +
Our all-inclusive package covers everything required for a safe, compliant installation:
- Brand-new high efficiency A-rated condensing combi boiler
- Standard horizontal flue kit
- Complete chemical powerflush & system cleanse
- Free wireless programmable digital smart thermostat
- Professional installation by a vetted Gas Safe registered engineer
- Gas Safe building regulations compliance certificate
- Manufacturer warranty registered directly in your name
- Safe disconnection and free eco-disposal of your old boiler
Can I convert my old conventional water tank system to a combi? +
Yes! Converting an older conventional system (with a cold water tank in the loft and a hot water cylinder in a cupboard) to a high-efficiency combi boiler is one of our most common jobs. A combi heats water instantly on demand from the mains, freeing up valuable storage space and providing high-pressure hot water to all your taps and showers.
What manufacturer warranties are included? +
We provide genuine manufacturer-backed parts and labour warranties ranging from 5 years (Vokera) to up to 10 or 12 years (Worcester Bosch and Navien). The installation engineer registers the warranty directly with the manufacturer on completion day so you are protected immediately.
Do I have to pay an upfront deposit? +
No high-pressure upfront payments. We provide 100% fixed transparent quotes with flexible payment terms upon successful completion and testing of your new boiler. We accept all major debit/credit cards, bank transfers, and Klarna payment options.
GET YOUR FIXED PRICE QUOTE NOW
Takes 60 seconds · Zero pushy salesmen · Direct engineer pricing across Glasgow