CavityTherm UK is a nationwide referral platform. We do one thing: make sure that every person who needs cavity wall insulation gets connected with a certified, experienced, accountable installer. No shortcuts. No unvetted contractors.
"Every property in the UK that can be insulated should be insulated — properly, safely, and by someone who knows what they're doing."
Too many homeowners have been let down by poor installations or unqualified contractors. CavityTherm UK exists to change that — by setting a higher standard and only working with installers who meet it.
From your first enquiry to a fully insulated, certified property — here is exactly what happens and who is responsible at every step.
You fill in a short form or call us directly. We collect only what we need — your name, number, postcode, and property type.
Your details are sent securely to First Choice Energy Ltd — our sole installation partner — within working hours. No middlemen, no delays.
A member of the First Choice Energy team calls you to discuss your property and arrange a free, no-obligation survey at a time that suits you.
A certified surveyor visits your property. If suitable, installation is typically completed in a single day — entirely from outside your home.
On completion you receive a PAS 2035 installation certificate and a 25-year CIGA-backed guarantee. Fully documented and transferable at sale.
Anyone can call themselves an insulation installer. Very few can back it up with two or more years of verified, active accreditation across multiple independent schemes.
Every installer in the CavityTherm UK network must meet all of the following criteria before we refer a single customer to them.
We believe in being transparent. Here is exactly who will be contacting you and carrying out your installation.
First Choice Energy Ltd is our sole certified installation partner, carrying out all cavity wall insulation surveys and installations on behalf of CavityTherm UK. They are a fully accredited, experienced installation company operating across the United Kingdom.
When you submit an enquiry through CavityTherm UK, your details are passed directly and securely to the First Choice Energy team. They will call you within 24 hours to discuss your property and arrange your free survey.
All work carried out by First Choice Energy Ltd is covered by a 25-year CIGA-backed guarantee and certified under PAS 2035 — the current UK standard for retrofit insulation installations.
Our office team manages every enquiry, maintains installer standards, and makes sure every customer gets a prompt, professional response.
Photos and individual profiles coming soon. In the meantime, you can reach our team directly on 01234 567 890 Monday–Friday, 8am–6pm.
These are genuine experiences from customers whose enquiries were passed through CavityTherm UK and installed by First Choice Energy Ltd.
"Our house always felt cold in the winter no matter how much we had the heating on. After getting cavity wall insulation installed, the difference was really noticeable. The walls don't feel cold anymore and the house warms up much quicker. We're already seeing lower heating usage and the whole place just feels more comfortable."
"We decided to have cavity wall insulation installed after hearing it could help reduce energy bills. The process was quicker than we expected and there was very little disruption. Since having it done, the house keeps heat much better and we've definitely noticed a drop in how often the heating needs to be on."
"Our property is an older house and some rooms were always colder than others. After installing cavity wall insulation, the temperature feels much more even throughout the house. It's made a big difference to comfort, especially during colder evenings."
We are clear about what CavityTherm UK is and isn't. We're a referral platform, not an installer. We say so plainly — on every page.
We don't work with installers who can't prove their credentials. Two years of active accreditation is the minimum. No exceptions.
Every enquiry is passed to our installation partner the same working day it arrives. Customers hear back within 24 hours.
We're not in this to generate leads for its own sake. Every installation we facilitate makes a property warmer, more efficient, and more valuable.
Submit your enquiry today. You'll hear back within 24 hours.