Request a Call Back
A Wide Range of Gas & Heating Services
From urgent repairs to regular servicing, we help keep your heating system working safely and reliably.
Boiler Repair
Reliable boiler repair services for heating faults, breakdowns and common boiler problems.
Boiler Servicing
Professional boiler servicing to help keep your system safe, efficient and working properly.
Boiler Installation
Boiler installation and replacement services are carried out with care, safety and professional workmanship.
Reliable Gas & Heating Specialists
Thermo Gas Avalas provides professional gas, boiler and heating services for homes, landlords and businesses across London. From boiler faults and heating breakdowns to annual servicing, system repairs and hot water issues, we offer clear advice and reliable support.
We work with a range of heating systems, including boilers, central heating, underfloor heating, unvented cylinders, heat pumps, heat interface units and more. We focus on safe service, accurate fault finding, and practical solutions to keep your heating and hot water running properly.
Complete Boiler & Heating Services
We provide practical support for boiler repairs, boiler servicing, central heating faults, hot water issues, underfloor heating and unvented cylinder repairs. Whether you need regular maintenance or help with a heating problem, we offer clear advice and reliable service across London.
See Our Work in Action
Take a closer look at our boiler, heating, HIU and hot water system work. We share real job photos and project examples so customers can see the type of systems we repair, service and maintain.
Our Engineers Work With Leading Boiler & Heating Brands
We are Gas Safe Registered
Thermo Gas Avalas takes gas safety seriously.
Our gas, boiler and heating services are carried out by
Gas Safe-registered engineers,
giving customers confidence that their heating and gas work
is handled safely and professionally.
Why Choose Thermo Gas Avalas
We provide reliable gas, boiler and heating services across London, with a focus on safety, clear advice and dependable support for homes and businesses.
How Our Service Works
We make gas, boiler and heating services simple, clear and stress-free from first contact to job completion.
Customer reviews
What our customers are saying about us
★★★★★
Goran is a very helpful and trustworthy heating engineer. We found him kind, and he is very knowledgeable. The work Goran did is very professional. We found Goran a very nice person to do such heating work. Thank you.
Victoria W.
Customer
★★★★★
Goran is my go-to for anything with my boiler. He always seems to be able to come at amazingly short notice and is always able to fix things in a couple of hours.
Nick Delteil M.
Customer
★★★★★
Excellent job, on time
Mark F.
Customer
Accreditations & Trusted Profiles
We are listed on trusted platforms and professional registers, helping customers book our gas, boiler and heating services with confidence.
