Vaillant at trade prices
German-engineered heating
Vaillant is known for quiet, efficient boilers and a modular approach to servicing that installers rate highly. The ecoTEC range is a mainstay of domestic heating, alongside aroTHERM heat pumps and uniSTOR cylinders for low-carbon retrofits.
- ecoTEC combi & system boilers
- aroTHERM air source heat pumps
- Weather-compensation controls
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Buying guides
Radiators Buying Guide: How to Choose Radiators for Any Room
Everything you need to compare radiator types, outputs and sizes before you buy — written for installers and homeowners.
HeatingBoilers Buying Guide: Combi, System and Regular Compared
How to choose between combi, system and regular boilers — output, hot water demand, fuel type and the parts every swap needs.
HeatingHow to Size a Radiator: BTU Calculations Made Simple
A step-by-step method for working out the BTU output a room needs, and how to turn that figure into a radiator height and width.
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StelradDelivery you can plan around
Free delivery over £100 ex VAT. Standard UK mainland delivery is £6.95 ex VAT.
Delivery information14-day returns
Unused stock items can be returned within 14 days of delivery in their original packaging.
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Contact usStandard UK mainland delivery is £6.95 and free on orders over £100 ex VAT. Heavy or palletised items, the Highlands, Islands and Northern Ireland are quoted separately at checkout.