Got a question? The InstaGroup experts have put together some Boiler & Heating FAQs, along with some advice on our other products and services.


Our Boiler & Heating FAQs cover the most common queries, from our initial survey through to installation.

Book a new obligation survey and we can answer the questions that are unique to your home.


Guarantees vary according to the manufacturer. For instance, as a Worcester Bosch Platinum Approved Installer InstaGroup is able to offer its customers a 7-year manufacturer's warranty with all Worcester Bosch boiler installations.

All installations are carried out by experienced and fully qualified GasSafe and Oftec registered heating engineers and we do everything we can to make the process as simple and straightforward as possible. We take care to keep any disruption to a minimum and clean up once the work is done.

Most boilers are expected to last about 10 years. Older boilers are less energy efficient than current condensing types, so it could make financial sense to upgrade your model. Ask us for a no-obligation heating assessment to check if your boiler needs replacing.
You can find more detailed advice from our heating expert John Francis.

Before we start the installation process we’ll assess the work required and let you know how long it will take to complete. Depending on the complexity of the work, you should allow 1-2 days for a new boiler to be installed.

Boilers are rated from ‘A’ to ‘G’ for fuel economy. G-rated boilers are the least efficient, giving you less heat and hot water for the fuel they use; A-rated boilers are the most energy efficient and are environmentally friendly.

Upgrading to an A-rated boiler is a cost-effective way to stay warm at home, save money on your energy bills and reduce carbon emissions.

Our home heating assessor will undertake a full survey of your home, before providing you with a range of options to upgrade your home heating system. These will take in the needs of your household and your budget.

The assessor will advise you of any of our current offers and also discuss payment plans.

You’ll need to book a home heating assessment to find out. Our expert survey will help you decide on the most suitable boiler for your home and household needs. Moving the boiler to a more convenient place or installing additional radiators and controls could also have an impact on your heating costs.

Following your home heating assessment we will send you a detailed written quotation. This is a fixed price quotation outlining the costs of the different boiler options you’ll have discussed. As the cost is ‘fixed’ you’ll know exactly what there is to pay.