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do i need a new boiler? 5 telltale signs
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Do I Need a New Boiler? 5 Telltale Signs

When your boiler is working normally, you probably don’t even notice it. But if it starts playing up, it may be a sign that it needs replacing.

If your boiler is on the newer side, it might only need a replacement part or a service to fix a minor fault. But if you notice any of the signs below, it’s probably a more serious issue, and you may need a full replacement.

Here’s how to tell if you may need a new boiler.

Do I need a new boiler? 5 signs to look out for

1. Regular breakdowns

You can prolong your boiler’s lifespan by booking it in for a regular service.

With that said, if you’re having to frequently call out an engineer in order to take care of breakdowns, it’s probably time to consider replacing your boiler.

New boilers are expensive, but the bills will also pile up if your current boiler is regularly breaking down.

If you’re calling out an engineer more than once a year – aside from your annual service – you may want to look at replacing your boiler.

2. Unusual smells

If your boiler is giving off a sulphurous (eggy) smell, this could be indication of a gas leak.

A gas leak is highly dangerous – if you notice this smell from your boiler, turn it off immediately and call the National Gas Emergency Number on 0800 111 999.

You’ll also most likely need to replace your boiler, too.

3. Unusual noises

Boilers typically make some noises without causing any issues. But if you notice the sounds coming from your boiler are different from usual, it’s worth paying a bit more attention.

Concerning noises include a banging, gurgling or clunking sound accompanied by vibrations in the machine. If the noise is excessively loud or persistent, it may be time to replace your boiler.

4. Poor overall performance

If you notice that your boiler regularly drops in pressure, there may be a leak in the system. There may also be an issue with either its expansion vessels or a pressure relief valve. Get out an engineer to establish what the issue is.

Similarly, if your radiators are taking longer than usual to warm up, your boiler may be wearing out. Your radiators may only need bleeding to deal with the issue, but if it’s more complicated, your boiler might need replacing.

If your boiler keeps shutting off without good reason, this can also be a sign of a deeper issue.

5. Higher energy bills

An inefficient boiler means higher energy bills.

If you’ve noticed your household energy bills slowly rise without any change to your energy usage, your boiler may be inefficient and need replacing.

You can determine your boiler’s efficiency by checking its ERP energy rating. The most efficient modern A-rated boilers operate at 90% efficiency, whereas older G-rated models run at 70% efficiency or less.

Contact Surrey Heating Specialists for a new boiler

Unsure whether you need a new boiler? Surrey Heating Specialists can help. We’ll inspect your boiler and recommend the best course of action for you and your home, whether that’s a replacement part, quick fix or full replacement. Contact us today to find out more.

 

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I thoroughly recommend Paul from Surrey Heating Specialists. He serviced both my and my Mum’s boilers, replaced a couple of faulty radiator thermostats for Mum and also diagnosed and fixed an intermittent problem with my heating by replacing the timer, all in the same day. Very polite, helpful and professional.
Response from the owner:Thank you so much for your review
Excellent response, problems with boiler. Paul and Ryan found the problem and fixed. Recommend highly for boiler and heating works.
Response from the owner:Thank you so much for your kind words, N Gill! We truly appreciate your recommendation for our boiler and heating services. It means a lot to us as a trusted, local business in the community. If you need anything in the future, don't hesitate to reach out! Warm regards, Ryan Price - Owner Surrey Heating Specialists Thank You, Ryan Price
Surrey Heating Specialists serviced my gas boiler in November 2025. They responded really quickly and the engineer was great. Payment and booking was quick and easy. Will definitely use them again.
Response from the owner:Thank you Joseph, we are glad to see how happy you are with our service.
Excellent service. Good price to. The gas engineers. Dan and Anthony informed me every set of the way Of the progress. Great guys to have had working in my home. Couldn’t ask for anything more. Left very clean and tidy. Thank you both. And Ryan
Response from the owner:Thank you so much for your kind words, Caroline! I'm thrilled to hear that Dan and Anthony provided you with excellent service and kept you informed throughout the process. We take pride in being a trusted local business, and your satisfaction means the world to us. If you need any further assistance, don't hesitate to reach out! Warm regards, Ryan Price - Owner Surrey Heating Specialists Thank You, Ryan Price
100% recommend Surrey Heating..Brilliant service, friendly and professional team and have very reasonable rates..Well done to you all
Response from the owner:Thank you so much, Lynn! We're thrilled to hear that you had a brilliant experience with our team at Surrey Heating Specialists. Your recommendation means a lot to us, and we truly appreciate your kind words about our service and rates. We're proud to serve our local community! Best regards, Ryan Price - Owner Surrey Heating Specialists Thank You, Ryan Price
Great plumber came on time no mess good job
Response from the owner:Thank you so much for your kind words, Leona! We’re thrilled to hear that our plumber provided you with timely and tidy service. Your satisfaction means the world to us as a trusted, local business. If you need anything else, just let us know! Ryan Price - Owner Surrey Heating Specialists Thank You, Ryan Price
Superb service from first contact to job completion. Communicative, timely, expert engineer and zero flannel. Really good experience
Response from the owner:Thank you so much for your kind words, Graham! We're thrilled to hear that you had a superb experience with our service. Communication and expertise are top priorities for us, and it's great to know we met your expectations. We appreciate your support for our local community-based business! Best regards, Ryan Price - Owner Surrey Heating Specialists Thank You, Ryan Price
Excellent and efficient service and very caring staff.
Response from the owner:Thank you Anita, great to see you happy with our service, will pass it to the team.
A great experience to getting my boiler fixed and serviced by Surrey Heating Specialists - only downside is that the struggle in not being able to tell me the full price when asking to book an engineer and getting my name wrong as well as my address which was a bit of a struggle to getting right.
Response from the owner:Hi Umer, Thank you for your feedback — I really appreciate it. Just to clarify, it’s very difficult for us to give an exact repair cost before attending, as we simply don’t know the fault until we’ve carried out the diagnostic. That’s why we have the £50 + VAT diagnosis fee, and why we explained the minimum charge for the first two hours if the repair can be completed there and then. We did send the call-out terms via email and text so everything was clear up front, but apologies again for the small mix-up with your name. I’m really glad to hear you were happy with the service overall, and thank you for choosing Surrey Heating Specialists. Ryan Price Owner Surrey Heating Specialists
Excellent service and went above and beyond by helping to get my hive app working again. This was my second boiler service and will call on surrey heating again without hesitation.
Response from the owner:Thank you Arnie , your review means a lot for us and we always make sure the service is being done properly as it is really important.
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