How long does a new boiler installation take?

A like-for-like combi swap is usually one day. A full system conversion (regular to combi, tank removal, new flue route) can be two to three days. We'll tell you exactly when we quote.

How much does a new combi boiler cost in Aberdeen in 2026?

Like-for-like combi swaps in Aberdeen typically range from £1,800 to £2,500 fitted, depending on the brand, the warranty length, and whether the system needs a power flush. We'll quote everything in writing before you commit.

Which brand should I choose — Worcester, Vaillant, Ideal, Viessmann?

For 10 to 12 year warranties, Worcester Bosch and Vaillant lead. For mid-market value, Ideal and Baxi are reliable and well-priced. Viessmann is excellent on efficiency. We'll recommend based on your hot water demand and budget, not on commission.

Do I need to convert from a system boiler to a combi?

Not always. If you have a large family or two bathrooms running together, keeping a system boiler with a cylinder is often the better option. We'll talk you through what makes sense for your property.

Can you arrange finance?

Not at the moment — we're working on partnering with a finance provider. Most jobs are paid by bank transfer or card on completion.

Do you fit smart controls with the new boiler?

Yes — Hive, Nest, Tado, Drayton Wiser, Honeywell Lyric. Tell us when we quote and we'll include the kit, the wiring and the app set-up in the price.

Belmont Plumbing and HeatingAberdeen

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New boiler installations

A new boiler, fitted and certified in Aberdeen.

Combi, system or regular boiler. We size it correctly, fit it properly, register the warranty and walk you through it before we leave. No upselling, no surprise bills.

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Why call Belmont

Gas Safe registered, all gas work certified
No call-out charge in Aberdeen
Quote up front, no surprise bills
4.8 stars across 43 Google reviews

What we do

New boiler installations in Aberdeen and Aberdeenshire.

A new boiler should last fifteen years and we want yours to do exactly that. We start with a proper site survey — your hot-water demand, the size of the property, the radiators, the gas supply, the flue route — and then recommend the boiler that fits. Worcester Bosch and Vaillant for the long-warranty options, Ideal and Baxi for sensible-price reliability. We'll quote everything in writing before any work starts: boiler, flue, controls, system flush if needed, removal of the old unit, and the labour.

Example install: a recent Aberdeen job in a three-bedroom property with two en-suite bathrooms — Worcester Bosch 4000 25kW system boiler paired with a 180-litre unvented hot water cylinder, with a Hive controller fitted in the loft and connected to the home's router. System-with-cylinder is still the right answer for higher hot-water demand and multiple bathrooms running together.

Brands: Worcester Bosch and Vaillant for premium warranties (up to 12 years). Ideal, Baxi and Viessmann for excellent mid-market value. We'll recommend based on your property and budget, not based on what we want to sell.

When it's time for a new boiler

Current boiler is over ten years old and repair bills are mounting
System keeps tripping or losing pressure no matter what gets fixed
Want to convert from a regular boiler with a tank to a combi
Need a more powerful unit for a bigger property or extra bathroom
Want smart controls (Hive, Nest, Tado) properly wired in
Insurance or warranty has run out and you'd rather start fresh

What the install includes

How a Belmont visit usually runs.

1Free site survey — we look at the system, not just the boiler position
2Honest sizing recommendation, no upselling to a bigger unit than you need
3Written quote covering the boiler, flue, controls, flush, removal and labour
4Power flush of the existing system where it's necessary
5Old unit and flue removed and recycled
6New boiler installed and commissioned, manufacturer warranty registered
7Smart controls fitted and set up if you've gone with them
8Benchmark certificate, building notification, and warranty paperwork left with you

What customers say

4.8 stars across 43 Google reviews.

“Seumas put in a new boiler for us. He talked us through everything clearly and got us a good boiler at a good price.”
Richard CarrAberdeen · 3 months ago

Read all on Google

Frequently asked

Questions we get asked about new boiler installations.

How long does a new boiler installation take?: A like-for-like combi swap is usually one day. A full system conversion (regular to combi, tank removal, new flue route) can be two to three days. We'll tell you exactly when we quote.
How much does a new combi boiler cost in Aberdeen in 2026?: Like-for-like combi swaps in Aberdeen typically range from £1,800 to £2,500 fitted, depending on the brand, the warranty length, and whether the system needs a power flush. We'll quote everything in writing before you commit.
Which brand should I choose — Worcester, Vaillant, Ideal, Viessmann?: For 10 to 12 year warranties, Worcester Bosch and Vaillant lead. For mid-market value, Ideal and Baxi are reliable and well-priced. Viessmann is excellent on efficiency. We'll recommend based on your hot water demand and budget, not on commission.
Do I need to convert from a system boiler to a combi?: Not always. If you have a large family or two bathrooms running together, keeping a system boiler with a cylinder is often the better option. We'll talk you through what makes sense for your property.
Can you arrange finance?: Not at the moment — we're working on partnering with a finance provider. Most jobs are paid by bank transfer or card on completion.
Do you fit smart controls with the new boiler?: Yes — Hive, Nest, Tado, Drayton Wiser, Honeywell Lyric. Tell us when we quote and we'll include the kit, the wiring and the app set-up in the price.

Related services

Often booked together.

Ring Belmont. We answer first ring.

Pick up the phone and tell us what's wrong. We'll quote on the call where we can, and book you in the same day if we can fit you in.

Call 07308 204100