Business Details
33 Years
experience
Emergency
services
Trusted Heating & Plumbing Services in Watford
Established in 1993, Gas Mark 1 has built a reputation as a leading provider of domestic heating and plumbing services in Watford and the surrounding areas. As a family-run business, we prioritise quality installations, exceptional value, and professional customer service. Our dedicated teams specialise in boiler and central heating installations, bathroom and kitchen renovations, fireplace fitting, and comprehensive plumbing maintenance. All our engineers are Gas Safe registered and trained through our in-house apprenticeship scheme, ensuring a skilled workforce capable of delivering high-standard solutions. Based in a large four-storey showroom in Watford, we operate as a one-stop shop for design, supply, and installation, working closely with our sister company Herts Bathrooms and Kitchens.With over 20 years of experience, we pride ourselves on reliability, transparency, and a commitment to resolving customer needs efficiently. Our focus on training apprentices guarantees continuity in expertise while maintaining a loyal team trusted to work in clients' homes. Customer satisfaction remains central to our ethos, evidenced by the fact that over 50% of our new business comes from recommendations. We offer free site surveys, fixed pricing for many services, and emergency call-outs to ensure comprehensive support for all heating and plumbing requirements.
Services
Boiler Installation
Central Heating Systems
Fireplace Fitting
Bathroom Renovations
Kitchen Installations
Plumbing Maintenance
Underfloor Heating
Solar Water Heating
Gas Fire Repairs
Emergency Repairs
Details
- Year established: 1993
Highlights and features
- We have over 20 years of experience in domestic heating and plumbing services.
- Our engineers are Gas Safe registered and trained through our in-house apprenticeship scheme.
- We operate as a one-stop shop for design, supply, and installation with sister company Herts Bathrooms.
- We offer fixed pricing for many maintenance services and 24/7 emergency call-outs.
- Over 50% of our new work comes from customer recommendations.
Associations and certifications
- Gas Safe Register
What people say
Fantastic workmanship
Professional and friendly
Highly recommend
Immaculate results
Efficient and tidy
Services
Boiler Installation
We provide hassle-free boiler installations performed by Gas Safe registered engineers. Our team ensures safe, efficient setups tailored to your home's requirements. With over 20 years of experience, we deliver reliable solutions that enhance comfort and energy efficiency.
Bathroom Renovations
Our dedicated installation teams create bespoke bathrooms to suit individual tastes and budgets. From design consultation to final fitting, we ensure minimal disruption and high-quality results. Clients praise our attention to detail and professional approach.
Plumbing Maintenance
We offer comprehensive plumbing repairs including leaks, blockages, and appliance issues. Our engineers provide 24/7 emergency call-outs across Hertfordshire. Gas Safe registered specialists ensure safety and compliance with industry standards during all interventions.
Underfloor Heating
Specialist installation of underfloor heating systems for improved energy efficiency and comfort. Our engineers deliver tailored solutions compatible with various property types. This service integrates seamlessly with other central heating upgrades for optimal performance.
Fireplace Fitting
We offer complete fireplace design, supply, and installation services. Our team handles both traditional and modern gas/electric fire solutions. Clients appreciate our expertise in creating focal points that combine aesthetics with functional heating benefits.
Questions
What areas do you cover for heating and plumbing services?
We serve Watford, Rickmansworth, Chorleywood, Hemel Hempstead, St Albans, and surrounding areas across Hertfordshire, Buckinghamshire, and North West London.
Are your engineers Gas Safe registered?
Yes, all our heating engineers are Gas Safe registered and trained through our in-house apprenticeship programme to ensure compliance and safety standards.
Do you offer emergency plumbing repairs?
We provide 24/7 emergency call-outs for urgent plumbing issues including leaks, blockages, and boiler breakdowns across our service areas.
Can you help with bathroom and kitchen installations?
Yes, we offer complete bathroom and kitchen renovations including design, supply, and installation through our sister company Herts Bathrooms and Kitchens.
How can I get a free site survey?
Contact us via phone or our website to arrange a free, no-obligation site survey for any heating, plumbing, or installation project.
What payment methods do you accept?
We accept major credit/debit cards and bank transfers. Specific payment options can be discussed during your initial consultation or survey.
Reviews (3)
Ann Crago
Jul 13, 2017
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Jason and his apprentice fitted our new central heating boiler and replacement cylinder this week. What a pleasure to have a job quoted, carried out with the minimum of fuss and disruption, maximum efficiency, for a great price and they cleared up after themselves as well! Superb service! I would highly recommend. Thank you.
Juliet Voisey
Nov 04, 2016
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Boiler service today. Once again your guys are polite and careful, always respectful. Would recommend your company to anyone. Thank you.
Amanda Chaston-Osborn
Dec 15, 2015
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A huge big thankyou to John Henderson for sending Tom and Chris to our home and installing a new boiler. being without heating and hot water became a matter of some urgency due to my job as a childminder and they certainly pulled out the stops to get us up and running promptly. Tom and Chris were polite, thorough, worked really hard and cleared up behind themselves with little eyes peering at them every step of the way. can't thankyou enough. will certainly be recommending. Amanda Chaston
