Quick Answer
A new combi boiler installed in Glasgow costs £1,800–£3,500 all-in. A system boiler costs £2,200–£4,000. Prices include supply, installation, flue, and controls. The biggest cost variable is the boiler brand, Worcester Bosch and Vaillant cost more but come with 10-year warranties.
New Boiler Installation Cost by Type
All prices include the boiler unit, installation labour, new flue, thermostat controls, and any standard pipework adjustments. VAT is included at 5% (domestic heating installation).
| Boiler Type | Typical All-In Cost |
|---|---|
| Combi Boiler (Supply & Install) | £1,800 – £3,500 |
| System Boiler (Supply & Install) | £2,200 – £4,000 |
| Conventional/Regular Boiler | £2,500 – £4,500 |
| Heat Pump (Air Source) | £7,000 – £14,000 |
Boiler Brand Price Comparison
These are boiler unit costs only, add £500–£1,000 for installation labour depending on complexity.
Worcester Bosch
£900 – £1,800Most recommended, 10-year warranty available
Vaillant
£900 – £1,700Excellent reliability, popular in Glasgow
Ideal
£650 – £1,200Good value, 7-year warranty available
Baxi
£650 – £1,300Solid mid-range option
Viessmann
£1,200 – £2,000Premium German engineering, very efficient
Alpha
£500 – £950Budget option, decent for smaller properties
What's Included in a 1Point Boiler Installation
Signs You Need a New Boiler Rather Than a Repair
- • Boiler is over 12–15 years old and requiring frequent repairs
- • Repair cost exceeds 50% of a new boiler price
- • Your energy bills have increased significantly without explanation
- • The boiler is yellow-flaming, making unusual noises, or producing soot
- • You can't source replacement parts (discontinued model)
- • You've had 3+ call-outs in the past 2 years