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Air Source specialistCoverage listed for 12 regions; confirm postcode

About Thermoserv Ltd

Thermoserv Ltd is a air source heat pump installer based in Ehyteleafe, Surrey. MCS number NIC-601773 is on record; check its current status before booking. It is one of 57 installer listings in Surrey. Our record does not show it as BUS registered; 44 other listings there are recorded as registered. Check current Ofgem status before relying on the grant. Homeowners rate it 2.5 out of 5 from 24 Google reviews. It covers North West, North East and London and 9 more areas.

System typesAir Source

How Thermoserv Ltd compares in Surrey

57

Installer listings in Surrey

44 registered for BUS

This installer is not yet registered

#25 of 41

by Google review count among reviewed installers

Other installer listings in Surrey

Compare all 57 installers in Surrey

Business details

Address475 Godstone Road Ehyteleafe, Ehyteleafe, Surrey, CR3 0BL

Coverage area

Based in Surrey, CR3 0BL

Areas served:

North WestNorth EastLondonEast MidlandsWest MidlandsEast of EnglandSouth EastSouth WestYorkshireScotlandWalesNorthern Ireland

Reviews

2.5

24 Google reviews

Based on verified Google reviews

Eileen Ilenia A.
4 weeks ago

-Annual gas check: technician said everything's ok, leaves a written signed report. -Couple of months later: got a call about another gas check. Technician is clueless on why he was sent out, he checks everything again, asked about where about the fluke exits, rips off part of the isolation material around said fluke, then goes up to the attic to check for fluke exit. Comes back, doesn't leave a report, doesn't fix the damage. - Couple of weeks go by and again I got a text to book another gas check, this time a supervisor comes around. He says he needs to check previous technician's job, tells me about the insulation damage around fluke, carbon monoxide detector not being properly installed, check the attic, comes back, tells me someone else will be coming to fix the insulation and carbon monoxide detector, doesn't leave report. It's now September no one has come to fix the insulation, no report has been sent out. I've called multiple times now, I keep getting told that the report will be in the post in the next couple of weeks, haven't received it yet. No reply to my email. No accountability either for the damage caused. Most unprofessional company ever.

Margarit Miky
2 months ago

Average overall service from Thermoserv Ltd; the heating issue was resolved, but communication and response time could be improved.

Ru
5 months ago

Philippa was absolutely amazing and extremely professional throughout the whole process. She truly went above and beyond to help my family secure an earlier slot for our emergency, and we are incredibly grateful for all her support and kindness. Her dedication, professionalism, and willingness to help make her a real asset to the company. We sincerely appreciate everything she did for us and wish her all the very best for the future.

David Lawrence
8 months ago

Anything above 1 star would be a criminal offence. Where do I start?!? I woke up Oct 1st 2025, to find a large puddle of water that had leaked from my boiler overnight onto my kitchen worktop. I reported it to my council who have a contract with this company. I was told someone would come within 24 hours and much to my surprise someone showed up within a few hours (only reason for 1 star). He claimed there was a blockage someone and he removed the debris, he was in and out in 15-20 mins. Within 2 hours of him leaving the boiler started to leak again. I called the council the next morning and they said someone will be out to inspect. Another person came and he said and did the exact same thing as the previous engineer; he stayed for 10 mins! Shortly after he left the boiler started to leak AGAIN, so I had to report the leak AGAIN. A days/weeks later the original engineer shows up and says he knows what the issue is, he changes a part and says I promise you it is fixed, “I will even come back tomorrow after work and knock on your door to check”. Did he show up the next day?…no! Did the boiler leak again?…Yes! So I report it for a 4th time, I’m told I have to wait a some time (several days) for an engineer to attend. Due to the leakage and not being able to catch the water properly the wood boxing around the pipe work has become damp and expanded. The engineer eventually comes says he knees exactly what the issue is but he needs to order a part and was in and out of the property in 5 mins. The job then gets rebooked and the boiler was eventually fixed and he said he would log in his report that the wood boxing would need to be replaced, somebody would contact us. So, it took 8 weeks to fix a leak and 5 visits from 4 engineers to fix. Nobody contacted me about the boxing so I had to contact the council again, because of the busy Christmas period I was told the first available date was the first full week in Jan. I booked a morning appointment and nobody showed up. I call the council and they say Thermoserv have said the engineer had an emergency but someone else will be attending. The engineer shows up an hour before I had to leave to go on the school run. He said he doesn’t have the right wood or access panel to install that day but he promises he would be back to do the work. He calls his office and puts it on loudspeaker and they booked a job for the following week. The following week comes and again the timeslot is missed. We call again, the info we received is that the engineer was stuck on another job and he is on his way. Our bell rings and it is a totally different guy from the week before. He said he only started with the company the day before and he was given the job half an hour ago. He doesn’t have the tools, the wood or any info on the job to do it today. He said he could tell how frustrated I was with everything, so he personally promised to come back when someone would be at home to do the work. We booked in for the following Tuesday and guest what?…nobody showed up! I called the council yet again, thermoserv contact me directly and say they are so sorry. The engineer was unprofessional for contacting you and that they have decided to relieve him of his duties as a result. I said I don’t want anyone to lose their job but if he is going to lose his then the others need to too! The woman claims that there is a shortage of wood from their suppliers and that is why there has an issue with the previous visits. I said so you can’t pick up a piece of plywood from b&q or wickes? She said it doesn’t work like that we don’t have accounts with them. She said we can book you in for 2 weeks time on Feb 6th. I said how do you the supply issue will be fixed. She said that’s why I’m booking it for 2 weeks, so it should be sorted by then. I said I need an appointment time that factors in the school runs and if there is any reason why you can’t attend or the engineer is delayed I need immediate communication. Well guess what? Today is Feb 6th, they missed the morning slot and nobody has called me. The worst!

D M
9 months ago

Very very unprofessional on the appointment that they give you and then also no quality of work that gets done 👎 Wouldn't use them ever again even for free service ❌❌❌ Wonder why they win contracts for low prices than other top company's........ Big No for me, they are waste of time ❌ ❌ 👎 ❌ 👎 ❌

Showing the 5 most recent of 24. Reviews from Google. Read them on Google

Frequently asked questions

How can I check Thermoserv Ltd's MCS certification?

Our record lists MCS number NIC-601773. Check the current status and the heat pump technology covered on the official MCS installer register before agreeing work.

Can Thermoserv Ltd claim the Boiler Upgrade Scheme grant for me?

Our record does not show Thermoserv Ltd as BUS registered. Only an installer registered with Ofgem can apply for the grant on your behalf. 44 of the 57 installers listed in Surrey are registered. If the grant matters to you, check current registration with the firm and Ofgem, or compare the registered installers nearby.

What types of heat pump does Thermoserv Ltd install?

Thermoserv Ltd installs air source heat pumps. Air source is the most common choice for UK homes because it needs only an outdoor unit and no groundworks.

Which areas does Thermoserv Ltd cover?

Thermoserv Ltd lists North West, North East, London, East Midlands, West Midlands, East of England, South East, South West, Yorkshire, Scotland, Wales and Northern Ireland as its coverage area. Most installers will travel 25 to 50 miles from base, so it is worth asking if you are just outside.

How is Thermoserv Ltd rated?

Thermoserv Ltd has a 2.5 out of 5 rating from 24 Google reviews, which makes it the 25th most-reviewed of the 41 installers in Surrey with reviews. Read the most recent reviews above, and ask for references from installations of your house type.

How do I get a quote from Thermoserv Ltd?

This listing is unclaimed, so we do not publish its contact details. Compare other installers nearby and check each firm's own contact route. Compare quotes where contact is available: other listings in Surrey include Vitoenergy Ltd, T Brown Group Ltd and Spartan Mechanical Ltd. Check each firm's current certification and service area.

Quick facts
Regions covered12 areas

Heat pump grants

£7,500

is available to most homeowners through the Boiler Upgrade Scheme

On a lower income and in England? The council-run Warm Homes: Local Grant can pay for the work in full instead.

Compare every UK heat pump grant →

Wondering whether you qualify for a grant? Check the current property, fuel, technology and installer rules before relying on any amount. Compare every UK heat pump grant.

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