About Us
I’m David Graham owner of Quality Heating Services I have been in the domestic heating business for over 30 years, following my apprenticeship in the late 1980s I ran my own plumbing and heating business for 7 years installing central heating and bathrooms. I then spent 10 years working as a Service Engineer for Baxi Heating UK Ltd, my area being from Bristol to Southampton down to Penzance. This involved servicing repairing and fault finding on the entire Baxi branded range, which includes Potterton, Main, Powermax, Heatrae, Santon water heaters and Valor fires. After Baxi, I spent a short time working for British Gas but I decided to run my own specialist heating/boiler business concentrating on the Baxi brand only.
Our business is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. As a result, a high percentage of our business is from repeat customers and referrals.
We would welcome the opportunity to earn your trust and deliver you the best service in the industry.
Fully qualified gas heating engineer (natural gas and LPG)
Over 30 years experience.
Employed directly by Baxi for 10 years.
ACS - Natural gas and LPG - (CCN1, CEN1, HTR1, WAT1, CKR1 + CONGLP1 PD and RPH)
City and Guilds, 2391, 2380 and 2360 (parts1 & 2 with distinctions)
Unvented certification UHWSS (install, commission and service)
Energy Efficiency for Domestic Homes (part L)
Building Engineering Services Certification (essential electrics, C/H controls fault finding and C/H controls wiring) and more
Gas safe registered 207286 (previously CORGI 105111)
Institute of Gas Engineers No. 156829
Baxi and Potterton Approved Service provider No.S99S
Warm Front Installer No. 17103
Devon County Council Trading Standards Approved No.0511
Ex British Gas contractor
We carry out servicing, breakdowns, installations and Landlords Certification on both Natural gas and LPG appliances.







