G Carroll Heating Services

Mr Graham Carroll

Interchange Park
(313 Reviews)
G Carroll Heating Services Logo
Approved member since 2015
Call01908 010488

Skills & expertise

  • Central Heating
    • Gas Boiler Installation
    • Gas Boiler Servicing / Repair
    • Gas Central Heating Installation
    • Smart Thermostats
  • Household Water Treatment
    • Purifiers
    • Water Coolers Supply / Maintenance
    • Water Filters
    • Water Softeners
  • Plumber
    • Power Flushing
    • Radiator Installation
    • Radiator Repair
    • Radiator Thermostat Valve Installation
    • Radiator Thermostat Valve Repair
    • Thermal Dynamics
    • Underfloor Heating Installation
    • Underfloor Heating Repair
    • Water Pumps Installation
    • Water Pumps Repair

Company info

My name is Graham, I am a heating engineer and owner of G Carroll Heating Services. We specialise in Water Softeners, boiler repair, boiler servicing and smart thermostat fitting (Nest and Hive). I have many years experience in fault finding, working with many makes and models of boiler. I offer a reliable and personal service. We are based in Milton Keynes and cover the surrounding area including Bedford, Buckingham, Northampton and Aylesbury. 

I also install Harveys Minimax top quality water softeners that protect your plumbing, appliances and eliminate scale from your home. Please ask me for a free no obligation demo at your house. Please take a look at our new water softener website under our trading name Shires Water, click here.

Other services rendered:

  • Nest thermostat installation (Smart phone operated central heating controls)
  • Drayton Wiser Approved installers
  • Water softeners
  • Free estimates
  • Phone consultation to discuss problems

Please feel free to give me a call, even if you would just like to talk through the job that needs doing or a problem you have. Here to help. Please read my reviews

Contact details

Reviews Summary

Average score based on 16 reviews in the last 12 months
313 Total Reviews

The reviews below represent customers' views and not the views of Checkatrade

Quote Accuracy
(15 Reviews)

Customer Reviews


Boiler service

Verified Review

Great service as always. Reliable and professional. Highly recommend.

Location: MK18
Reviewed in: April 2023

Boiler Service

Verified Review

Graham and his team are trustworthy, professional and experts at what they do. After moving to Leighton Buzzard a few years ago, I hired Graham to do a boiler service and fix some other issues around the heating. Since then I've used Graham every year and, when there are issues I always feel incredibly well-informed and given great tips/advice on how to keep my systems in tip-top conditions. I couldn't recommend them stronger enough!!

Location: LU7
Reviewed in: April 2023

Install nest thermostat

Verified Review

Its my 2nd nest installed in my house. First one also installed by him and so far never had any issues.Excellent work done. Very happy with the quality of work. He definitely deserves a 5 star rating.

Location: MK11
Reviewed in: January 2023

Cylinder yearly service

Verified Review

Good service

Location: MK11
Reviewed in: January 2023

Checking of wiring to the Google Nest 3rd gen Learning thermostat

Verified Review

The Google Nest was working perfectly until the night before where there was an H72 message. I wasn’t aware of an 0808 number until Graham alerted me, I was on Google chat support and several phone conversations to Google support to try to diagnose what the problem was. In the end I managed to find Graham who quickly was able to respond and organise a house visit at very short notice the next day. I was worried the issue would only be resolved after the holiday. Fortunately, the job only needed recabling the Heat Link wires without needing to replace the thermostat and is now back working fine.

Location: MK7
Reviewed in: December 2022

Boiler maintenance and service

Verified Review

Graham was a top professional and conducted the work efficiently. I would highly recommend him to anyone.

Location: MK11
Reviewed in: December 2022


  • Domestic Work
  • Commercial Work
  • Free Estimates
  • Insurance Work Undertaken
  • Cards Accepted


Works in

Milton Keynes, Buckingham, Stony Stratford, Bedfordshire, Buckinghamshire, Northamptonshire AND MORE

Vetting Status

Fully Vetted Trade

Self Certified
Company Type
Ltd Company
Checkatrade T&Cs
Approved member since 2015
Trading address verified
ID Checked
Checkatrade Standards
Company Status
Limited Company Checked
Yes: Registered as a Company G Carroll Ltd No: 10265923
VAT Registered
Yes: 268 4735 63
Company Type
Ltd Company
Business Owners
Mr Graham Carroll
Insurance Details
Public Liability Insurance
Current: Self-Certified on: 09/11/2022
Insured By
Covea Insurance plc

Accreditations and Memberships

bpec certificate of achievement held by Graham Carroll - WREG Water Supply (Water Fittings) Regulations 1999

City & Guilds Level 2 NVQ in Mechanical Engineering Services- Plumbing ( Domestic )

City & Guilds Level 3  NVQ in Mechanical Engineering Services- Plumbing ( Domestic ) Gas Option