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Gasking Our Gas Safe Engineers are backed up by our friendly, efficient and knowledgeable team in the Customer Service department.

We staff our office 24/7.
3 Hour response time for emergency Repairs.
Guaranteed price promise on labour.
You’ll receive text and email alerts to confirm your appointment, as well as alerts letting you know when your heating engineer is on their way.
All reports will be available to you in both paper and electronic form.
All work comes with a 12 Month Guarantee.
Highlights and features
  • Central Heating Service
  • Boiler Breakdown Repairs
  • Gas Safety Certificates
  • Powerflush
  • New Boiler Installations
  • Annual Boiler Service
  • Boiler Repairs
Services
We believe that our customers deserve the best possible service, and our goal is to provide you with peace of mind when it comes to your heating.
So if you’re looking for an annual boiler service in London or the surrounding areas, look no further than Gasking.
We offer a yearly check-up at a competitive price, and we’ll make sure your boiler is running smoothly all year round.
What are the benefits of using Gasking for your Gas Safety Check?
Qualified, well trained Gas Safe Registered engineers.
Free 24 hour access to download your Gas Safety Certificate.
We will store all your paperwork digitally.
12 month warranty and 10 million pound liability cover.
Reduced price on Boiler Services completed during the same appointment.
Same day appointments.
Relax as GasKing’s engineers gets to work on your Plumbing Repair. No matter how long it takes to get your Boiler up and running again, GasKing’s price promise means you’ll never pay for more than 2 hours of labour.
Videos
The Best Annual Boiler Servicing in London
The Best Annual Boiler Servicing in London
Looking for a reliable and affordable annual boiler servicing in London? Look no further than Gasking! Our Gas Safe registered engineers are experts in gas boilers and can help keep your home warm all winter long. Call us today for a free quote! 08003688543
Reviews (14)
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Owen Edwards
Sep 03, 2022
Brilliant service at a great price. Excellent boiler repair by a very knowledgeable, polite, tidy and efficient heating engineer. Highly recommended and will use to maintain my heating system in the future. Services: Heating equipment repair & installation, Heating system repair
Howard Davies
Jul 29, 2022
The engineer was professional and courteous. I'll definitely recommend the company. Service: Heating system maintenance
David Hellewell
Jul 08, 2022
During my annual boiler service the engineer repaired my leaking filler loop on the spot. Services: Heating system repair, Heating system maintenance
Graeme Stuttaford
Jun 29, 2022
Dear Tracey Thanks for the service provision, so nice to know that the Worcester-Bosch boiler has had a service. I provided a he engineer with a parking permit however he did not take long to do the boiler service, about 10-15 mins. There was a leak from the plastic drain connection, so I disconnected the cap and cleaned it and replaced the rubber grommet ring. All is fine now, not even the tiniest of leakage. Thanks and all the best, Graeme
Steven Lynch
Jun 19, 2022
Very good service and they really helped me out by getting a GAS safe done with very short notice. This potentially would of delayed tenants moving into a property and they just simply turned up, did the work and their quick response was very appreciated. Great response to an urgent enquiry. Service: Heating system maintenance
Grumpy Dad
Mar 08, 2022
Fast friendly service. Arrived and fixed within 2 hours. Jamie has many years of experience and knows how to diagnose the issue and fix it quick. Unlike others i've had who were guessing and misquoting me hundreds.
Renata Korpak
Feb 27, 2022
We booked Gasking for our annual boiler service required by Vaillant as part of their warranty. The engineer was friendly, very helpful. He corrected some errors in the logbook made by our installer for which we are particularly grateful. He also took time to answer all questions, left the place clean and tidy. Will use again! Service: HVAC system maintenance
Dave Wray
Dec 16, 2021
Boiler broke approx 0400, filled out online form around 05:45, fixed by 11:00 with numerous update calls before to confirm attendance. Superb service from start to finish and reasonable prices too. Thank you all for a thoroughly professional service.
Paul Willis
Nov 20, 2021
Superb job, new boiler fitted without any issues and at a very competitive price. Great communication, arrived when they said they would, no mess during removal and fitting of boiler, left the area clean and tidy after the job - Highly recommended.
SamThe PianoMan
Oct 22, 2021
Had Gasking around to my house in Hornchurch to fix my boiler. Jamie the engineer was fantastic and had my boiler repaired within half an hour. He had the boiler part needed already in his van so he didn't need to drive away for another hour to get one which was great. If you need an emergency boiler repair engineer in Hornchurch give these a little go. I think they cover Romford and Rainham as well as Hornchurch. Top fella Jamie.
Clare Walker
Sep 30, 2021
We had a broken boiler and was without hot water and heating. We are based in Rainham and called out Gasking. They arrived shortly after and carried out the emergency boiler repair straight away without fuss. The gas engineer or plumber (sorry don't know correct name) was very polite and friendly and the boiler was repaired within half an hour. Pleasantly surprised as the cost of the repair was a lot less than I thought it might be. My friend who had a new boiler fitted by Gasking recommended them to me so it seems like they are doing a very good job.
Out With The Games & In With The Art
Aug 16, 2021
We was really impressed with Gasking. Friendly people in the office and Jim did a fantastic job fixing out boiler. Thank you Gasking
Jan Farrell
Aug 11, 2021
I would highly recomend GasKing to anyone. They do sterling work, and are also very friendly & helpful in more ways than one! Jamie Harvey is a very clever talented man, and I cannot praise him enough for the work he has done in my flat Today! I promise you that you will not be dissapointed!
Todd
Mar 30, 2019
Jamie attempted to repair our boiler, which in the end turned out to be uneconomical. Install of the new boiler was organised and carried out within a couple of days. On each visit I was given a time slot, e-mailed confirmation on the day, from the office, and had a call from the engineer when leaving his previous job. Easy to do but do many others just leave you wondering when or if they will arrive. Adam in the office was organised and helpful. This is a small business on the up