The ECO 4 scheme (Energy Company Obligation phase 4) is a government-backed initiative designed to improve the energy efficiency of homes across the UK, particularly targeting low-income and vulnerable households. Under this scheme, eligible homeowners and tenants can receive free or heavily subsidised energy efficiency improvements, such as boiler replacements, insulation, and renewable heating systems like air source heat pumps.
At the heart of the ECO 4 scheme are certified and accredited ECO 4 installers. These professionals play a crucial role in assessing homes, recommending upgrades, and installing energy-efficient systems. Choosing the right installer ensures not only compliance with scheme regulations but also long-term comfort, reduced energy bills, and a smaller carbon footprint.
This article explores who ECO 4 scheme installers are, what they do, how to find a reliable one, and what measures they typically install—along with the essential keywords to boost SEO and online visibility.
What is the ECO 4 Scheme?
The ECO 4 scheme is the latest phase of the government’s Energy Company Obligation, running from 2022 until 2026. It focuses on reducing fuel poverty and helping the UK meet its net-zero carbon targets by making homes warmer and more energy-efficient.
The scheme is funded by major energy suppliers, who are legally obligated to support households that qualify based on income, vulnerability, or Energy Performance Certificate (EPC) ratings (typically E, F, or G). ECO 4 aims to upgrade poorly insulated homes by providing access to:
Boiler replacements
Air source heat pumps
Cavity wall insulation
Loft insulation
Internal wall insulation
External wall insulation
Solar panels
Smart heating controls
Who Are ECO 4 Scheme Installers?
ECO 4 installers are registered and accredited professionals or companies authorised to carry out energy-efficiency upgrades under the scheme. They work with energy suppliers and local authorities to deliver high-quality, government-backed improvements to qualifying homes.
To ensure safety, efficiency, and compliance, these installers are typically:
TrustMark-registered
PAS 2035 compliant
Certified under the Microgeneration Certification Scheme (MCS) for renewables
Qualified for retrofit coordination and energy assessments
Using approved ECO 4 installers is essential because only work completed by them qualifies for funding under the scheme.
What Do ECO 4 Installers Do?
A certified ECO 4 scheme installer handles the entire process of making your home more energy efficient. Here's a breakdown of what they typically do:
1. Eligibility Check and Application Support
Installers help you confirm whether you qualify for ECO 4 funding based on your income, benefits, home ownership status, and EPC rating.
2. Home Assessment
A qualified assessor visits your property to evaluate its current energy performance and identify the most suitable upgrades.
3. Recommendations and Plan
Based on the assessment, the installer recommends specific measures—such as internal wall insulation or a boiler upgrade—to improve the home’s energy efficiency.
4. Installation of Measures
Certified installers carry out the necessary installations, adhering to PAS 2035 standards and ensuring safety and long-term performance.
5. Follow-Up and Support
After installation, many installers offer warranties, post-installation checks, and advice on how to get the most out of your energy improvements.
Common Upgrades Offered by ECO 4 Installers
Depending on your home’s condition, location, and existing heating systems, installers may provide:
First-time central heating installations
A-rated boiler replacements
Cavity wall insulation
Room-in-roof insulation
Underfloor insulation
Smart heating controls
Solar PV panels
Air source heat pump installation
These improvements are designed to increase thermal efficiency, reduce heating costs, and lower your household's carbon emissions.
How to Find Accredited ECO 4 Installers
When searching for an ECO 4 installer, it’s crucial to choose a provider that is officially approved and experienced in government-backed schemes. Here’s how to find one:
1. Use TrustMark
Search the TrustMark website, which lists vetted, government-endorsed installers for energy-efficiency upgrades.
2. Check the Ofgem Register
The Ofgem website maintains a list of companies operating under the ECO 4 scheme and their areas of specialisation.
3. Ask for Certification
Make sure the installer is certified under PAS 2035, MCS (for renewables), and has trained retrofit coordinators on staff.
4. Get Recommendations
Ask local councils, energy companies, or online community groups for recommendations on reputable installers.
Why Choose a Certified ECO 4 Installer?
Choosing a certified ECO 4 installer ensures:
Access to full government grant funding
High-quality, regulation-compliant installations
Increased property energy efficiency
Reduced heating bills and improved comfort
Contribution to national Net Zero goals
Non-certified installations will not qualify for grant funding, and could result in subpar workmanship or non-compliance with safety standards.
Who Qualifies for ECO 4 Scheme?
You may qualify for free energy-efficiency upgrades if:
Your home has an EPC rating of E, F, or G
You receive means-tested benefits (e.g., Universal Credit, Pension Credit)
You are a homeowner or private tenant (with landlord approval)
You live in a low-income household (under LA Flex provisions)
Even if you’re not on benefits, you may still qualify through LA Flex, a provision that allows local authorities to extend eligibility based on income or health conditions affected by cold homes.
Final Thoughts
With the ECO 4 scheme, thousands of households across the UK can finally access the energy improvements they desperately need. Certified ECO 4 scheme installers are the trusted professionals making these upgrades possible—transforming cold, draughty homes into warm, efficient spaces.
