Gas Boiler & Underfloor Insulation grants available

If your current gas boiler is 7+ years old or broken and you have suspended wooden floors then please contact us for a FREE survey as you maybe eligible for an upgrade on your gas boiler.

Replacing your gas boiler and insulating your wooden floors could cut your heating costs considerably, and make your home more comfortable.

Our Services


Gas Boiler Scheme

Our Gas Boiler Scheme is a boiler grant available to help you save money on your energy bill. Check if you are eligible today by contacting us at DUOSERVE.

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ECO 3 Grants

ECO3 grants are available here at DUOSERVE. For more information, please visit our website and check how it can help you and the funding available.

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LA Flex (Local Authority Flexible Eligibility)

Are you eligible to claim for our LA Flex Scheme? Visit our website for more details and see if your local authorities have declared your premises eligible.

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Internal Wall Insulation (IWI)

Have you ever considered saving Energy with Internal Wall Insulation? DUOSERVE offer the IWI funding grant. For more information visit our website.

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About Us


About Us
Duoserve was set up by two close friends In October 2017. With a combined experience of 20 years in the energy sector, Ali and Dan have helped hundreds of customers claim government grants towards heating and insulation measures. We do not only help customers in need of support, but also cover the private sector of work for Solid Wall Insulation and renewable heat pumps. Duoserve will carry out the required survey at the property and choose a professional and reliable installer.  We will always make sure the customer has a top quality service hence why we only work along side the best.

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Contact Us


  • Regus House, 4 Admiral Way, Doxford International Business Park, Sunderland, SR3 3XW