01206 230435 
info@ajsenergy.com 
Covering East Anglia  
Up to 10 years warranty 

Welcome to AJS Gas & Heating Services Ltd 

AJS Gas & Heating Services Ltd are an established heating and renewable energy company based in Colchester, with over 30 years experience. 
 
Specialising in the installation of gas and oil boilers, air source and ground source heat pumps, photovoltaic (PV), solar thermal and underfloor heating. We pride ourselves on delivering excellent customer service and high quality workmanship, all at competitive prices. 
 
Our respected team of qualified engineers cover East Anglia, to attend to your heating and renewable energy technology requirements. 
 
We are able to install any domestic gas or oil boiler on the market. We work closely with Which Magazine's top UK boiler manufacturers, allowing us to offer up to a Ten Year Warranty on new boilers. We are registered as Vaillant Advance installers for their domestic gas boilers, along with Grant G-One installer for their domestic oil boilers. 
 
We are registered with Gas Safe Register and OFTEC for domestic heating installations and with the MCS for the installation of air source heat pumps, ground source heat pumps, Photovoltaic (PV) and solar thermal. 
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