Boiler Replacement

Upgrade your old, inefficient boiler to a modern A-rated system. Save money on energy bills with our expert replacement service.

Price: From £1,800
Typical time: 1-2 days
Guarantee: 12 months on workmanship

Call 07502 225764 Get a free quote

9.96/10 on Checkatrade from 103 reviewsGas Safe registered, trading since 2009

Our work: New Ideal combi boiler with the pipework clipped plumb and square.

About boiler replacement

Boiler replacement is swapping an existing boiler that's on its way out for a new one, usually in the same position and often the same type (combi for combi, system for system). It's a like-for-like or near like-for-like job rather than a conversion, which makes it more straightforward than an installation that changes the type of system or its location.

The usual signs it's time are boilers over ten to fifteen years old, repeated call-outs for the same or different faults, parts becoming hard to source, and a noticeable difference in performance compared with a modern condensing boiler. An older G or F-rated boiler runs markedly less efficiently than a current A-rated model, though the exact saving depends on your usage and current setup.

Whether to repair or replace comes down to the age of the boiler, how often it's failing, and whether the parts it needs are still being made. A boiler that's needed two or three separate repairs in a year, or where a failed part is discontinued, is usually past the point where another repair makes sense. We'll always give you a straight answer on that rather than pushing a replacement you don't need.

The old boiler is removed and disposed of responsibly as part of the job. For a straightforward swap, the whole thing, from removing the old unit to commissioning the new one, is often achievable in a single visit for Havering and Romford customers, though anything involving flue or pipework changes can take longer.

What's included

How the job runs, start to finish.

1Survey to confirm a like-for-like swap is possible
2Removal and responsible disposal of the old boiler
3Fitting the new boiler in the same or an improved position
4Reusing or upgrading existing pipework and flue where needed
5System cleanse and inhibitor dosing before commissioning
6Benchmark commissioning checklist completed and signed
7Explaining the new controls and settings before we leave

Boiler Replacement pricing

Price

From £1,800

Typical time: 1-2 days

Old Boiler Removal
System Flush
Smart Controls
12-month workmanship guarantee

Every job is priced before any work starts, and quotes are free. Read the cost guide.

Call 07502 225764 Get a free quote

Signs you need boiler replacement

Boiler is more than ten to fifteen years old
Repeated breakdowns or increasingly frequent call-outs
Replacement parts are hard to source or discontinued
Rising gas bills without any change in usage
Boiler takes longer to reach temperature than it used to
Boiler is G or F-rated rather than A-rated

What customers say

All 103 reviews

“Very quick turnaround very through and clean and tidy made sure my toilet worked before leaving and made sure I was happy 😃 Very lovely lads”
Plumbing & Heating · Checkatrade review, RM7
“Dan was highly competitive on price and his guys were excellent, friendly and respectful. The work was done within the time I was quoted which was great. Old equipment was removed with no mess at all. Now, the bottom line is ‘would I recommend Dan to my family and friends” - 100%. 👍”
Plumbing & Heating · Checkatrade review, RM1
“Excellent all round service from DJ’s Plumbing Services. From providing the quotation through to completing the work the company provided a very professional, proactive and high quality service. The approach adopted by the team was one of ensuring complete customer satisfaction. Very impressed, will definitely use them again.”
Plumbing & Heating · Checkatrade review, CM13

Photos of our work

Boiler Installations: 13 photos

Boiler Replacement questions

Clear answers to your most common plumbing concerns.

Is my old boiler inefficient?

Boilers over 10 years old (G-rated) can be 30% less efficient than new A-rated models.

Is it worth repairing my old boiler or should I replace it?

It depends on the boiler's age, how often it's breaking down, and whether parts are still available. A single repair on a boiler that's otherwise reliable is usually worth doing; repeated repairs on a boiler over ten years old often aren't. We'll give you an honest view based on what we find, not a default push toward replacement.

Can you fit a new boiler in the exact same spot as the old one?

In most cases, yes, which is what keeps a replacement simpler and quicker than a full installation. We check the existing pipework, flue route, and ventilation during the survey to confirm the same position still meets current regulations before quoting.

What happens to my old boiler after it's removed?

We take the old boiler away with us and dispose of it responsibly, so you don't need to arrange separate removal, find space to store it, or take it to a recycling centre yourself. This is included as part of the replacement visit, not an extra you need to organise afterwards.

Will a new boiler reduce my energy bills?

Modern A-rated condensing boilers are more efficient than older G or F-rated models, so most homeowners see a reduction, but the exact amount depends on your current boiler's condition, your heating habits, and the rest of your system. We won't quote you a specific saving figure since it varies household to household.

Can I switch brands when replacing my boiler?

Yes, you're not tied to your existing manufacturer just because that's what's currently on the wall. We'll talk through the options suited to your property's size, gas supply, and hot water demand, and give you a straightforward recommendation rather than steering you toward one brand regardless of fit.

Where we work

Based in Romford, covering Havering, Essex and London.

Boiler Replacement guides

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