Sterling Thermal Ltd


We are approved installers of electric trace heating in London. Trace heating provides frost protection, underfloor heating and temperature maintenance. As leaders serving the greater London area, our KoolDuct® products have been designed to replace sheet metal systems and is made from CFC-free high density laminate.

Insulation London

Serving customers throughout London and Surrey. We work closely with manufacturers to carry out insulation design and maintenance for building services projects. Our London-based insulation projects have been designed for condensation control, energy conservation and frost protection.  

Plenum Boxes

Made from KoolDuct®, the plenum boxes are ducting systems that are preinsulated. The Airlite plenum boxes are light weight and can be installed by just one person. They have many benefits including strength, versatility, aesthetics, advanced technology and low cost.

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