Total customer satisfaction is our aim. Please visit our testimonials page to view our customers feedback 

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From changing taps to installing heating systems we can help. Please view our about page for full range of services that we provide.

Welcome to Gastec Plumbing and Heating, We are Vaillant accredited installers and specialise in the installation and maintenance of Vaillant boilers.


We are a family run business based in Stevenage, and covering all over Hertfordshire and Bedfordshire. We have 20 years experience working in the heating industry with extensive knowledge of Vaillant products, and heating systems, so we are always able to give the best practical advice. 


All Vaillant ecotec plus boilers fitted by Gastec will be supplied with 8 years full parts and labour Warranty as standard. 

An optional warranty upgrade can be purchased. You can choose from, 

9 Years £144 or 10 years £180 inc VAT. 





If you would like to see some of our work 

Please view our gallery 

Call: 07758121349

Email: ​Gastec01@sky.com

07758121349

If you would like to contact us via email you can do this in the contact page