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2018 Combi Boiler Prices – The Homeowner’s Guide

Combi boiler prices will start as low as £500, up to £2,500 and beyond. The cost of a new combi boiler will depend on the:

  • KW output you need (check out our guide that explains what size boiler you need here)
  • Popularity of the manufacturer
  • Warranty provided
  • Installation costs

Below, we’ve covered current combi boiler prices for all units from 24kw-42kw. At the end of the article we’ve explained the combi boiler replacement quotes you should be expecting to receive.

Combi Boiler Prices For Small Houses

Smaller houses and apartments will usually use a boiler in the 24kw-27kw range. That assumes that you only have 1 bathroom, and no more than 10 radiators. 

If you have more than 1 bathroom, more than 10 radiators, or have high demand for hot water (shower and taps on at the same time), it’s likely you’ll need something different.

A new boiler in the low kw range is always going to be the cheapest. We’ve detailed a few popular combi boiler prices below.

Price (Boiler Only)

Boiler

KW Output

Expected Price

Baxi Duo-Tec 24 (ErP)24kw£725
Vaillant ecoTec 2424kw£890
Worcester Greenstar 25I25kw£920
Ideal Logic Plus 2424kw£770

 

Price Inclusive Of Boiler, Materials And Labour

There’s a lot that goes into combi boiler prices than just the purchase of the boiler. You’ll need a flue, a magnetic system filter, extensions and there’s a chance the gas engineer will need to re-route or move pipe-work.

Expect a typical installation including the cost of the new boiler, materials and labour to be in the £1,500-£2,000 range.

Combi Boiler Prices For Medium Sized Houses

If you have a property with 2-4 bedrooms, 1-2 bathrooms and up to 15 radiators, you’ll be looking at a larger boiler than 24kw-27kw. A more suitable size for your property is going to be in the 28-34kw range, and there’s plenty of choice. 

Combi boiler prices in the 28kw-34kw range can be 10-30% more than the 24-27kw equivalents.

Price (Boiler Only)

Boiler

KW Output

Expected Price

Baxi Duo-Tec 28 (ErP)28kw£850
Vaillant ecoTec 2828kw£900
Worcester Greenstar 30I30kw£1,050
Ideal Logic Plus 3030kw£850
Worcester Greenstar Classic 34CDI34kw£1,350

Cost Inclusive Of Boiler, Materials And Labour

The price in the 28kw-34kw will also need to include items like flue, a magnetic system filter and extentsions.

Expect a typical installation including the cost of the new boiler, materials and labour to be in the £1,850-£2,450 range.

>>> Get Boiler Replacement Quotes Here <<<

Combi Boiler Prices For Large Houses

We’re getting to the high end of what a combi boiler can really do. Any bigger than a 4-5-bedroom property with 2 bathrooms and up to 20 radiators, and you’ll need something else, perhaps a system boiler (consult an engineer first). 

Combi boiler prices in the 35kw-42kw range tend to be incredibly expensive, almost double that of the 24kw combi in some cases.

Price (Boiler Only)

Boiler

KW Output

Expected Price

Baxi Duo-Tec Platinum 40 (ErP)40kw£1,200
Worcester Greenstar 38CDI38kw£1,550
Ideal Logic Plus 3535kw£980
Ideal Vogue 3535kw£1,190
Worcester Greenstar Classic 42CDI42kw£1,750

 

Cost Inclusive Of Boiler, Materials And Labour

Combi boiler prices inclusive of the boiler, all other materials needed and labour will sit anywhere in the £1,800-£3,000 range.

Expect a typical installation including the cost of the new boiler, materials and labour to be in the £1,850-£2,450 range.

Combi Boiler Replacement Prices

The overall cost of combi boiler replacements factors in a range of different things such as:

  • Is the boiler in the same location, or does it have to be moved?
  • Is this a system upgrade (converting from a system boiler to a combi boiler)?
  • Does a magnetic system filter need to be installed?
  • Does the system have pipework that is currently up to Gas Safe standards?
  • Are extensions needed?

To save the complications, after account for the combi boiler price (boiler only), I’d expect to add on the following costs for a basic new boiler swap.

Boiler Size

Price Of Materials And Labour

24-27kw£700-£900
28kw-34kw£800-£1,000
35kw-42kw£850-£1,100

>> Get Boiler Replacement Quotes Here <<<

What’s Next?

Still got questions? Drop a comment below and we’ll get back to you as soon as possible.

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