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Gas Mark One Ltd

Serving Our Customers

We aim to offer a quality, efficient and a reliable service to all of our customers.  From our base in Monmouthshire, we are able to cover a large area of South Wales.With over 25 years of experience in the industry, our engineers all hold memberships to the listed professional registers.

  • Gas Safe ( Natural & LPG Gas )
  • Oftec
  • Hetas
  • Rayburn Guild

Gas Mark One is proud to be endorsed as a Which Trusted Trader.

Why choose Gas Mark One Ltd

  • Our experienced engineers are highly qualified and specialise in installing, servicing and repairing Natural gas, Lpg gas, Oil and Solid fuel boilers.
  • We have the knowledge and expertise to ensure that you receive nothing but the best.
  • We have over 25 years of experience in the industry. See what some of our Which Trusted Trader customers have said about us.

Accreditations

Gas safe
101363
OFTEC
C2979

Specialisms

  • Oil boiler
  • Gas boiler
  • LPG

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