Free Boiler Scheme UK 2026 — Grants and Eligibility Explained

There are legitimate schemes for free boiler replacements, but they have specific criteria. Here’s how they actually work.

How Free Boilers Work

The ECO 4 Scheme

Feature	Details
What it is	Energy Company Obligation
Funded by	Major energy suppliers
What it covers	Heating, insulation, renewables
Cost to you	Free if fully eligible
Runs until	March 2026, then successor

What Can Be Free

Measure	Covered?
New gas boiler	Yes (if existing inefficient)
First-time central heating	Yes
Oil boiler replacement	Yes
Electric storage heaters	Yes
Air source heat pump	Yes
Insulation	Yes

Eligibility Criteria

You Need to Meet Both

Criteria 1: Income/Benefits	Criteria 2: Property
Be on qualifying benefits	Home EPC rating D-G
OR be in a low-income area	OR have inefficient heating
(via LA Flex)

Qualifying Benefits

Benefit	Qualifies?
Pension Credit	Yes
Income Support	Yes
Income-based JSA	Yes
Income-related ESA	Yes
Universal Credit	Yes
Child Tax Credit (low income)	Yes
Working Tax Credit	Yes
Housing Benefit	Yes

Property Requirements

Requirement	Details
EPC rating	D, E, F, or G preferred
Current boiler	Usually 10+ years old
Boiler type	Gas, oil, electric, LPG
Broken boiler	Not required but helps
Ownership	Owner-occupied or private rental (with permission)

LA Flex (Local Authority Flexibility)

What It Is

Feature	Details
Purpose	Extend eligibility beyond benefits
Who decides	Your local council
Who can qualify	Low income, vulnerable, fuel poor
How to access	Council referral to scheme

LA Flex Criteria (Varies by Council)

Typical Criteria	Examples
Low income	Below threshold for area
Health condition	Cold makes condition worse
Vulnerable	Elderly, disabled
Fuel poverty	High proportion of income on heating

Contact your local council’s housing or energy team.

What You’ll Get

Boiler Replacement

Current System	What You May Get
Old gas boiler (10+ years)	New A-rated gas boiler
Back boiler	Modern combi or system
Old oil boiler	New oil or heat pump
Storage heaters	New efficient heaters or heat pump

What’s Included

Component	Typically Covered
Boiler unit	Yes
Installation	Yes
Flue	Yes
Basic controls	Yes
TRVs	Often
System flush	Often
Pipework modification	Most
Moving radiators	Sometimes

What’s Not Always Covered

Item	Coverage
New radiators	May be extra
Major pipework changes	May have contribution
Gas supply upgrades	Usually yes, sometimes partial
Asbestos removal	Varies

How to Apply

Option 1: Through Your Energy Supplier

Step	Action
1	Contact your energy company
2	Ask about ECO 4 eligibility
3	Provide benefit/income evidence
4	Survey arranged
5	Work scheduled if eligible

Option 2: Through an ECO Installer

Step	Action
1	Find ECO-accredited installer
2	Provide initial details
3	They check eligibility
4	Home survey
5	Work completed

Option 3: Through Your Local Council

Step	Action
1	Contact council housing team
2	Ask about LA Flex referrals
3	Council assesses eligibility
4	Referred to scheme
5	Survey and work arranged

Finding Legitimate Installers

How to Check

Verification	How to Check
TrustMark registration	trustmark.org.uk
PAS 2030 certification	Ask to see certificate
MCS certification	For heat pumps
Reviews	Check Google, Trustpilot

Red Flags

Warning Sign	What It Means
Large upfront payment	ECO work is free
Pressure to sign	Legitimate installers don’t pressure
Cold calling	Be very cautious
No survey needed	Always need assessment
Guaranteed free boiler	Must assess eligibility first

The Survey Process

What Happens

Step	What They Check
1	Confirm benefit eligibility
2	Assess current heating system
3	Check property EPC
4	Photograph existing setup
5	Determine appropriate measures

Survey Outcomes

Result	Next Step
Fully eligible	Work scheduled (free)
Partially eligible	May have contribution required
Not eligible	Try other schemes

After Installation

What to Expect

Feature	Details
Warranty	Usually 2-5 years
Completion certificate	Should receive
Building regs sign-off	Installer handles
Gas safe certificate	Must be provided

Your Responsibilities

Responsibility	Details
Annual servicing	Keep boiler maintained
Report issues	Contact installer/warranty
Keep documents	For warranty claims

Alternative Heat Options

Heat Pumps via ECO 4

Feature	Details
Available	Yes, if suitable
Assessment	Installer recommends
Cost	Free if eligible
Addition	Boiler Upgrade Scheme may add £7,500

Where Heat Pumps Work Best

Property Type	Suitability
Well-insulated	Good
Newer build	Good
Hard to heat old house	May need insulation first
Off-gas grid	Excellent alternative

Scotland, Wales, Northern Ireland

Scotland

Scheme	Details
Home Energy Scotland	Grants and loans
Warmer Homes Scotland	Free measures for eligible
Contact	0808 808 2282

Wales

Scheme	Details
Nest	Free improvements for eligible
Contact	nest.gov.wales

Northern Ireland

Scheme	Details
Affordable Warmth	For qualifying households
Contact	nihe.gov.uk

Common Questions

“My boiler still works — can I get it replaced?”

Situation	Outcome
Old but working	May qualify if inefficient
Under 10 years	Usually won’t qualify
Broken	May help eligibility
Needs frequent repairs	Evidence of inefficiency

“I’m a tenant — can I get a free boiler?”

Situation	Action
Private rental	Landlord permission needed
Social housing	Ask housing association
If eligible	You apply, landlord agrees

“I don’t receive benefits — can I still qualify?”

Route	How
LA Flex	Low income, fuel poverty criteria
Council referral	Contact your local council
Self-funded improvement	Get quotes, not free

Summary: Free Boiler Checklist

Step	Action
1	Check if you receive qualifying benefits
2	Check your property’s EPC rating
3	Contact energy supplier, council, or approved installer
4	Have survey conducted
5	If eligible, schedule free installation

Free boilers are genuinely available through ECO 4, but you must meet specific criteria. Apply through official channels and be wary of scams that charge fees for “free” services.