The UK government’s ECO4 program is helping thousands of homes secure free boiler replacements, first-time central heating, and home insulation upgrades. While qualifying for a grant is important, selecting the right ECO4 installer ensures everything proceeds smoothly, from eligibility checks to professional installation.
You’re in the right place if you’re looking for the best ECO4 scheme installer in the UK to help you access a free boiler, insulation, or heating system. This guide will show you exactly what to look for — and how BTS Grants can connect you with a trusted installer in your area.
What Is the ECO4 Scheme and Who Can It Benefit?
Energy Company Obligation 4 (ECO4) is a government-run scheme until March 2026. It is designed to help low-income and fuel-poor households make their homes more energy-efficient.
If you’re eligible, you can get:
- A free boiler replacement
- Free insulation (loft, cavity wall, or internal wall)
- First-time central heating systems
- Air source heat pumps
But here’s the key: You can only receive these benefits through approved ECO4 installers. And that’s where your decision counts.
Why the Right Installer Is Important
Selecting the wrong installer can result in:
- Missed or late grant approvals
- Poor-quality installs
- Unnecessary fees or hidden expenses
- Stress and wasted time
Conversely, using a TrustMark-accredited and PAS 2030-certified installer guarantees:
- Correct checks on eligibility
- Smooth application for funding
- Work as demanded by the UK government
- Warranty-supported installs
In short, the right installer doesn’t only install your boiler or insulation — they do everything from A to Z at no extra cost.
What Is an ECO4 Approved Installer?
An ECO4-approved installer is a professional or business approved to offer installations under the ECO4 scheme. They meet strict government standards and are registered with authorities like:
- TrustMark (government-endorsed quality scheme)
- Gas Safe Register (for boiler fitting)
- PAS 2030 & PAS 2035 frameworks (for loft insulation and retrofit coordination)
They are qualified to:
- Carry out home surveys
- Supply grant paperwork
- Fit equipment per ECO4 standards
- Provide aftercare and guarantee
Having a registered ECO4 installer is necessary to be eligible for the funding.
How to Tell if an ECO4 Installer is Trustworthy
Here are some definite indications you’re in the hands of a trustworthy ECO4 scheme installer:
1. They’re TrustMark Registered
Always ask an installer for their TrustMark registration number. TrustMark is an industry-backed scheme that assures installers meet industry standards.
2. They Don’t Ask for Upfront Payments
A legitimate ECO4 installer will never ask you to pay anything upfront. The UK government and energy companies fully fund the scheme.
3. They Carry Out a Free Survey First
Professional installers will book a free home assessment to determine what your property needs — such as a boiler, insulation, or heating — and confirm eligibility before commencing work.
4. They Explain Everything Clearly
The best ECO4 installers walk you through the process step-by-step. They’ll help you understand:
- What work will be done
- How long will it take
- What are your rights?
- What guarantees you get
If they seem pushy or unclear, it’s a red flag.
ECO4’s best-rated installers explain each step in detail. They’ll let you know:
- What will be done
- How long does it take
- What are your rights?
- What guarantees you get
If they’re being pushy or evasive, it’s a red flag.
5. They Have Positive Reviews and Experience
Look out for:
- Google or Trustpilot reviews
- Case studies
- Word-of-mouth referrals
Common Services Offered by ECO4 Installers
The right fitter will give an exhaustive list of upgrades under the government boiler scheme.
| Service | Description |
| Free Boiler Installation | Install new energy-efficient models in place of broken or worn-out boilers. |
| Central Heating Installation | Install radiators and pipework for first-time heating installations |
| Home Insulation | Loft, cavity wall, or internal wall insulation to reduce heat loss |
| Air Source Heat Pumps | Renewable heating solutions as part of ECO4 green retrofitting |
These services are tailored to your specific needs based on the results of your retrofit survey.
How to Find the Best ECO4 Installer for Your Home
Finding the right ECO4 installer isn’t just about ticking boxes — it’s about trusting someone with your home’s comfort, safety, and energy efficiency. That’s why choosing an installer who is fully certified, experienced, and transparent from the start is essential.
The best ECO4 installers will:
- Offer a free, no-obligation eligibility check
- Be TrustMark and PAS 2030/2035 certified.
- Provide clear communication and paperwork.
- Handle the entire grant process on your behalf.
- Have positive reviews and a proven track record.
At BTS Grants, we work only with vetted and approved ECO4 installers across the UK. We’ll connect you with local experts who meet the highest standards — and handle everything from survey to installation at no cost to you.
Red Flags to Avoid in ECO4 Installers
Not everyone has your best interests at heart. Here’s what to avoid:
- Unverified installers with no TrustMark or Gas Safe credentials
- Installers who push you to sign too quickly
- Demands for “booking fees” or “survey charges”
- Poor communication or evasive answers
- No official paperwork or agreement
Always be careful and verify credentials before committing to anything.
The ECO4 Installer Process: Step by Step
Here’s how working with a professional installer usually works:
- Check your eligibility (you can do this via BTS Grants)
- Book a free survey
- The installer visits your home and completes the assessment
- They apply for the ECO4 funding on your behalf
- Installation is scheduled and carried out
- You receive aftercare and documentation
All of this should be free if you’re eligible — no catches.
Why Choose BTS Grants to Find Your Installer?
At BTS Grants, we don’t just offer boiler grants — we’re your route to a warmer, greener home. We:
- Use only certified ECO4 installers
- Have access to free grant eligibility checks.
- Deal with all documentation and surveys.
- Provide support for the installation application.
Whether you need a free boiler, a new heating system, or insulation, we are here to make it simple and hassle-free.
Final Thoughts: The Right Installer = Peace of Mind
The ECO4 scheme is fantastic, but only if the right professionals fit it. With thousands of ECO4 scheme-approved installers throughout the UK, making an informed choice means your grant gets maximised, your home becomes warmer, and you save on energy bills for many years.
Ready to find the best ECO4 installer for your home?
Let BTS Grants match you with a fully certified, TrustMark-approved installer who can help you make the most of your government grant with zero hassle.
Check Your Eligibility and Get Started Today
FAQ’S
ECO4-authorised installers are TrustMark-registered technicians who have undergone training to implement energy efficiency improvements, such as boiler replacements and insulation, under the government’s ECO4 initiative.
Best-rated ECO4 installers are fully qualified and highly experienced. They deliver end-to-end solutions with free eligibility assessments. BTS Grants works with top UK-wide installers that offer guaranteed service.
Check to see if they’re TrustMark registered and PAS 2030 certified. For boiler installations, they should also be Gas Safe registered. Always check credentials before committing to anything.
Yes, but they need to be officially approved under ECO4. Using a non-certified installer can risk your grant status or delay your application.
Depending on your eligibility, you may receive a free boiler, central heating, loft or wall insulation, or renewable heating systems like heat pumps.
All work undertaken under the ECO4 scheme is guaranteed and subject to strict government quality controls, including those related to artistry and materials.
