Gas Mark 1

Gas Mark 1 Providing first class installations and top quality customer service. We also have a sister company Herts Bathrooms and Kitchens.

Hertfordshire's leading Gas Showroom and with fireplaces, gas and electric fires, cookers and all gas appliances. We are the premier installer of boilers and central heating in the area with our own highly skilled engineers and dedicated back office support.

A huge congratulations to our apprentice Finley on passing Level 2 plumbing & heating at You’re hard work, dedication a...
12/06/2026

A huge congratulations to our apprentice Finley on passing Level 2 plumbing & heating at

You’re hard work, dedication and commitment have paid off and we are proud of what you’ve achieved. This is a fantastic milestone in your career, and we look forward to seeing you grow with us and succeed in the industry.

Well done from everyone at Gas Mark 1! 🎉🥳

🏠 Is your property safety-ready?June is National Safety Month, making it the ideal time to check that your gas appliance...
10/06/2026

🏠 Is your property safety-ready?

June is National Safety Month, making it the ideal time to check that your gas appliances are operating safely and your carbon monoxide alarms are working as they should.

We offer:
🔧 Gas appliance servicing
📋 Landlord Gas Safety Certificates (CP12)
🚨 Carbon monoxide alarm replacements

A small check today could prevent a bigger problem tomorrow.

Message us with your contact details and will will call you back. Or give our office a call on 01923 231780.

🧼🛀 Showroom opportunity ✨We have a number of ex-display items available at clearance prices- this is a chance to grab a ...
09/06/2026

🧼🛀 Showroom opportunity ✨
We have a number of ex-display items available at clearance prices- this is a chance to grab a premium bathroom feature for a fraction of the original price!

DM us or email [email protected] for more information

🥰 After 30 years we said a heartfelt thank you and goodbye to director of Herts Bathrooms Kevin this week. Kevin has bee...
05/06/2026

🥰 After 30 years we said a heartfelt thank you and goodbye to director of Herts Bathrooms Kevin this week.

Kevin has been a huge part of our family business over the years, and we’d like to thank him for everything he has done for the company, our team and customers.

We wish him all the very best for the future and hope he enjoys every minute of retirement.

Thank you Kev, you’ll always be part of the family. 🥂

🌟🌟🌟🌟🌟 Our customers say it best! We’re proud to share some of our latest 5 star google reviews. Our team is committed to...
27/05/2026

🌟🌟🌟🌟🌟 Our customers say it best!

We’re proud to share some of our latest 5 star google reviews. Our team is committed to delivering quality workmanship and customer care every step of the way.

A huge thank you to all our customers for your kind words and continued support.

Thinking about your next home improvement project? Get in touch with our trusted team today.

Learning never stops here at Gas Mark 1 Herts Bathrooms & Kitchens 📚💡This we’re celebrating the people behind our busi...
20/05/2026

Learning never stops here at Gas Mark 1 Herts Bathrooms & Kitchens 📚💡

This we’re celebrating the people behind our business and the importance of developing new skills. From apprentices learning on site to experienced engineers expanding their knowledge and support stuff developing their confidence.

We are proud to support learning across every department!

🔧🏡Attention to detail makes all the difference.Another neat and tidy boiler installation completed by Taylor from the he...
18/05/2026

🔧🏡Attention to detail makes all the difference.

Another neat and tidy boiler installation completed by Taylor from the heating team at Gas Mark 1 including the neatly patched matching brickwork to leave the outside looking just as good as the inside 👌
We believe great workmanship is about more than just the boiler itself- it’s about leaving every job clean, professional, and finished to a high standard for our customers.

Thinking about upgrading your boiler? Get in touch with our team today for friendly advice and a free quotation. 📞

Teaching the apprentice the fun part first! Our Senior Kitchen Installation engineer Jamie B and our apprentice Scott th...
15/05/2026

Teaching the apprentice the fun part first!
Our Senior Kitchen Installation engineer Jamie B and our apprentice Scott this week getting another space ready for a fantastic Gas Mark 1 Herts Bathrooms and Kitchens job.

Happy Friday everyone!

24/04/2026

⛳️ some well deserved staff bonding this week and a visit to … congratulations to Sarah and Barney who were victorious! Rematch anyone? ⛳️

22/04/2026

🌍 Earth Day | Gas Mark 1 🔧🌱

This Earth Day, we’re highlighting the role that well-maintained gas appliances play in supporting a more energy-efficient and environmentally responsible future.

At Gas Mark 1, we’re committed to helping customers keep their heating systems operating safely, efficiently, and reliably through regular servicing and professional maintenance.

✔ Improved appliance efficiency
✔ Reduced unnecessary energy waste
✔ Safer, more reliable performance
✔ Lower environmental impact over time

A properly serviced gas appliance doesn’t just protect your home — it also helps ensure energy is being used as efficiently as possible.

🌱 Small maintenance choices today can support a cleaner tomorrow - get in touch if we can help you.

Address

15-21 Market Street
Watford
WD180PA

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm
Saturday 9am - 5pm

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