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44 Years
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Emergency
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Trusted Plumbing & Heating Services in Cheltenham
Established in 1982, Alsto-Heat is a family-run plumbing and heating engineering firm serving Gloucester, Cheltenham, and surrounding areas. Our team of Gas Safe and OFTEC-accredited engineers brings over five decades of combined experience to domestic boiler and central heating services. We specialise in boiler repairs, replacements, servicing, gas safety checks, and central heating installations, prioritising safety, efficiency, and customer satisfaction. As accredited Worcester Bosch installers, we offer guarantees of 5 - 12 years on boiler replacements. Our engineers provide emergency services during business hours and charge a small call-out fee for fault investigations.

We hold industry certifications including Gas Safe Registration and OFTEC endorsement, ensuring compliance with safety standards. Our approach combines technical expertise with a commitment to resolving issues promptly, offering tailored heating solutions for homeowners. We validate all work with Gas Safe certification and provide comprehensive reports post-service. Our reputation for reliability and expertise has been built through consistent delivery of high-quality plumbing and heating services.
Services
Boiler Repairs Boiler Replacements Boiler Servicing Gas Safety Checks Central Heating Installations
Details
  • Year established: 1982
Highlights and features
  • We have over 40 years of experience in domestic plumbing and heating.
  • Our engineers are Gas Safe and OFTEC accredited for safety compliance.
  • We offer free estimates after fault investigation with a small call-out fee.
  • We provide emergency services during business hours for urgent repairs.
  • Our Worcester Bosch boiler replacements include 512 year manufacturer guarantees.
Associations and certifications
  • Gas Safe Register
  • OFTEC
  • Worcester Bosch
What people say
Fast, efficient service Expert, friendly engineers Reliable repairs Competitive pricing Professional installations
Services
Boiler Repairs
Our Gas Safe engineers diagnose and fix boiler issues such as low pressure, leaks, and pilot light failures. We restore system efficiency and safety, preventing costly breakdowns. Services cover combi, regular, and system boilers in domestic properties.
Boiler Replacements
We install Worcester Bosch boilers with guarantees of 512 years. Our process includes system flushing, safe gas/water cutoff, and compatibility checks for combi, regular, or system boiler types. Post-installation testing ensures optimal performance.
Gas Safety Checks
We conduct Gas Safe-certified inspections to detect carbon monoxide risks, verify appliance settings, and ensure flue functionality. Our checks comply with legal standards and include pipework leak testing for residential properties.
Central Heating Installations
We design and install tailored central heating systems, including boiler selection, pipework, and smart thermostat integration. Systems are tested for efficiency and certified by Gas Safe engineers, with options for radiator balancing and zone controls.
Boiler Servicing
Annual boiler servicing includes component cleaning, combustion testing, and safety checks. We issue Gas Safe certificates post-service to validate warranties and ensure compliance with safety regulations for domestic boilers.
Questions
What areas do you cover?
We serve Gloucester, Cheltenham, and all locations within a 20-mile radius of Cheltenham.
Are your engineers certified?
Yes, our team is Gas Safe and OFTEC accredited, with Worcester Bosch installer certification for boiler replacements.
Do you offer emergency services?
We provide emergency repairs during business hours for urgent boiler or heating failures.
What boiler brands do you install?
We specialise in Worcester Bosch boilers, offering guarantees of 5–12 years on replacements.
How much do boiler repairs cost?
We charge a small call-out fee for fault investigation, with free estimates provided before starting repairs.
Can you service older heating systems?
Yes, we service all boiler types, including older models, and offer upgrades for improved efficiency.
Reviews (5)
Helen Roach
Jan 05, 2022 Report
We have used Alsto-heat Ltd on three separate occasions now and we have been very pleased with their service each time. Two occasions were to install and plumb up new sinks and the latest occasion was to repair a leak we had from our boiler. We currently have a HomeCare agreement with British Gas for our boiler, but we had a similar problem last year and British Gas came to repair, but now it's happened again so we decided to call on Alsto-heat. This was just before Christmas and we had no heating. Despite being very busy, Steve arranged for someone to assess the problem the same day I called and
Commodore Amiga
Mar 31, 2021 Report
Got these guys in to see my heating system as it was not working very well (Over heating). Guy was nice friendly but said the boiler was broken and needed replacing. Then quoted me 4k for a new one. I did not believe him and got a second opinion. It was just a small part that needed replacing. Use them at your own risk. Get a 2nd opinion if your unsure. Also when looking at the quote boiler quoted was only 1.2k online so they wanted 350 per hour to install a new one. (Based on 8 hours work). BE WARNED These guys should be investigated.
Mo Amid
Nov 13, 2020 Report
I have used these plumbers to supply and install a Worcester Bosch boiler, rads and the full heating systems for my in-laws 3 bed house in the Cheltenham area which cost approximately 4.5k which was in the average territory for what needed to be done. Few months later I needed the same for our new house which needed a bigger boiler and 13 rads with 2 towel rads. At first everything went okay until Roger with a South African accent wanted to cut corners. Naturally I wasnt having none of it as I was paying approx 5k for this. I later realised that Roger just wanted to get the job over and
Liam
Dec 24, 2018 Report
I needed a boiler change doing asap & from start to finish they were fast & very reliable. Would definitely recommend this company and would use again if needed.
Martin Lloyd
Dec 11, 2017 Report
Had my boiler and radiators replaced, great service and value for money with a pleasant and friendly team of engineers. Couldn't fault their work and speed. Would highly recommend!