GAS & OIL BOILER
SERVICE AND MAINTENANCE
AGA / RAYBURN
SERVICING & REPAIRS
AIR CONDITIONING
SERVICES
OUR SERVICES DON’T END HERE. GET IN TOUCH AND FIND OUT HOW WE CAN HELP .
WHY CHOOSE GAS MARK ONE?
We have over 25 years of
industry experience
Our experienced engineers are highly qualified and specialise in installing, servicing and repairing all aspects of your Range Cooker and Domestic Heating.
We have the knowledge and expertise to ensure that you receive nothing but the best. 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. We have over 25 years of experience in the industry and appeared on DIY SOS in 2007. All our engineers hold memberships to the listed professional registers:
OUR SERVICES
Our main services, products and promotions
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NEW RAYBURN & AGA COOKERS
New rayburn Cookers
new AGA cookers
SPECIAL PROMOTIONS
NEW RAYBURN PROMOTIONS
NEW AGA PROMOTIONS
RANGE COOKER SERVICE & REPAIRS
AGA & RAYBURN SERVICING & REPAIRS
RANGE COOKER & REPAIRS
GAS & OIL BOILER SPECIALIST
RAYBURN ELECTRIC FIRES
RAYBURN ELECTRIC FIRES
RAYBURN FIRE Specifications
OIL TANK INSTALLATIONS
NEW OIL TANK INSTALLATIONS
HOME OWNER GUIDE
AIR CONDITIONING SERVICES
AIR CON INSTALLATION
AIR CON SERVICING
NOVY EXTRACTOR FANS
NOVY EXTRACTO FANS
NOVY BROCHURE
AGA STOVES
AGA STOVE SPECIFICATIONS
OUR LATEST FEATURED PRODUCTS
Introducing The New Heatranger
Rayburn Heatranger 60K, 80K & 100K
Oil with Chrome Lids trim.
The Rayburn Heatranger is reliable, flexible and controllable, offering hot water, heating and radiant heat cooking. With large capacity cast-iron ovens for roasting, baking and simmering, and a large hotplate for boiling and simmering, the Rayburn Heatranger allows you to master all culinary styles. The Heatranger has HVO (95% Hydrotreated Vegetable Oil) compatible burners making the appliance eco-friendly, carbon-free and future-ready. HVO is invaluable in helping the UK achieve its net zero carbon target, reducing up to 90% of net CO2 emissions. Thanks to its digital display and electronic controls, you can easily control cooking and boiler functions independently. The Rayburn Heatranger 60K offers a boiler output of 60,000 Btu/h or 17.58kW, 80K offers a boiler output of 80,000 Btu/h or 23.45kW and 100K offers a boiler output of 100,000 Btu/h or 29.3kW.
GET IN TOUCH
TESTIMONIALS
What our customers say?
We would like to thank Mark for his help on our Rayburn before Christmas and subsequent visit today to service our Rayburn. He is very friendly ,and his knowledge is second to none We would highly recommended Gas Mark One as a trusted and professional company Many thanks Vince /Lesley.
CRICKHOWELL – JANUARY

Mark came out to us between Christmas and New year as we had no heating or hot water , following this call we booked a full service of our oil boiler , Mark was very professional and took time to explain the workings of our oil boiler a new concept to myself and husband . I would whole heartedly recommend this company .
USK – DECEMBER

The engineer, Mark Barrier, was very pleasant, efficient and knowledgeable. My Rayburn is now properly serviced and working well.
The lady in the office was very friendly and helpful. Thanks to both.
THE GLYN, MONMOUTHSIRE – FEBRUARY

SEE MORE
SHOWROOM
Rayburn Heat Centre
See the full range of:
- Rayburn Cookers
- AGA Masterchef
- AGA Wood burning Stoves
- AGA Electric Stoves
- AGA Gas Stoves,
- Rayburn Electric Fires
GET IN TOUCH AND FIND OUT HOW WE CAN HELP.
CONTACT US
Send us your enquiry below
OFFICE
EMERGENCYS ONLY
EMAIL US
VISIT OUR SHOW ROOM
Chestnut Tree Cottage,
Blaenavon Road,
Govilon, Abergavenny,
NP7 9PF