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GTI Heating

Mr Gerard Tiernan

Cleeve, Bristol, Somerset
9.9(110 Reviews)

Skills & expertise

  • Central Heating
  • Plumber

Skills & expertise

  • Central Heating
  • Plumber

Company info

Hello, I'm Gerard and I run Gti Heating and Plumbing.  I have over 15 years’ experience in the Heating and Plumbing industry.

Gti covers all aspects of Heating and Plumbing. We are Gas Safe and Oftec registered and work on Oil, Natural gas and LPG boilers. For all these boiler types we cover installing, maintaining and servicing. We also install and maintain Oil tanks. We install combi boilers, system boilers and heat only boiler upgrades. We can work on all heating system layouts from the very basic to the very complicated. We cover most elements of heating systems including underfloor heating.

At Gti we feel that providing high product with our quality customer service is of upmost importance for this reason we are;

Grant g one accredited installer, this allows us offer 10 years manufacturer’s warranty on their boilers.

We can also offer up to 10 years manufacturer’s warranty on Vaillant boilers, baxi boilers and Ideal boilers.

I hold G3 Unvented water qualifications. This gives you the option to get an Unvented mains pressure cylinder with you new or existing boiler. 

In the Plumbing aspects we also have vast experience and will undertake everything from a full Hot and Cold-water installation, open vented hot water as well as direct and indirect cold water. We are happy to project manage your new bathroom or just fix your dripping tap. No job is too big or too small.

Email - [email protected] 


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


Works in

Kingston Seymour, Backwell, Bristol, Cleeve, Clevedon, Kewstoke, Nailsea, Radstock, Redhill, Somerset, Weston-super-Mare, Yatton, All BS postcode areas.

Vetting Status

Fully Vetted Trade

Company Type
Sole Trader
Checkatrade T&Cs
Interviewed in 2016
Company Status
Insurance Details

Accreditations and Memberships

bpec Certification Ltd - Unvented Hot Water
  • Grant Pressure Jet Oil Burner Course taken by Gerard Tiernan on 9th November 2015 
  • Grant Vortex Condensing Boiler Installer Course taken by Gerard Tiernan on 10th November 2015 
  • Grant Combi Boiler Course taken by Gerard Tiernan on 11th November 2015 
  • Bpec Certificate of Achievement, for Domestic Hot Water Storage Systems
  • GTI Heating is an Grant Boiler Accredited Installer