Renowned for quality and reliability, we hope your Vaillant heating system provides you with hassle free heating and hot water all year round.  If however, you do experience any problems with your Vaillant heating system, or if you just want us to carry out your annual service, we’re here to help you 364 days a year with first class service and technical back up nationwide.

With every Vaillant appliance you’ll receive an exclusive Vaillant guarantee to give you complete peace of mind and assurance for years after you’ve made your purchase.  For full details of what your guarantee includes, and the terms and conditions click here. 

Our after sales service team are available 7 days a week, and with almost 250 gas safe registered service engineers, and a specialist team of MCS certified renewables engineers on the road in all parts of the country, they can normally arrange for an expertly trained Vaillant service engineer to be with you within 24 hours.

Having your boiler serviced annually is an essential part of the upkeep of your home heating system, and will ensure your system continues to perform at the very highest level long after it’s been installed.  Vaillant after sales also provide a variety of service packages, available to suit your specific requirements – as the manufacturer of your boiler, who better than us to look after it?

If you have a question about your boiler and are in need of some technical advice over the telephone our specialist team of Technical Helpline Advisors for homeowners are available Monday to Friday from 8.30am to 6.00pm and Saturdays, on 0844 7360049 or at to help identify your problem*.


Our after sales service is available on 0330 100 3143

Monday to Friday: 8am – 8pm

Saturday: 9am – 4pm
Sunday: 8am – 12pm

Or email us at:


To register your new appliance guarantee click here


To book a service call click here


*Please note: calls to the homeowner technical helpline are charged at 4p/min from a BT Landline. Calls from other networks and mobiles may vary. Appliance may still require a visit by a Vaillant or gas safe registered engineer.