Does a Boiler Grant Include Warranty and Aftercare?
Yes. If your boiler is replaced or upgraded through the Energy Company Obligation (ECO), it should come with a warranty. Ofgem says an ECO-funded boiler replacement or upgrade must have an installer-supplied warranty of at least two years. If an efficient boiler is repaired rather than replaced, the minimum is one year. A separate manufacturer’s warranty may provide longer cover. re” is less standardised. You should receive a proper handover, essential documents and a route for reporting faults. Free annual servicing, emergency call-outs and whole-system cover are not automatically included.
This guide explains what homeowners, tenants and landlords should expect, what may cost extra and what to check before work begins.
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An ECO-funded boiler should include warranty protection, but it may not include ongoing servicing or unlimited aftercare. Replacement or upgraded boilers must normally have at least a two-year installer-supplied warranty; an eligible repair must have at least one year of cover. You may also receive a longer manufacturer’s warranty, often subject to registration, correct commissioning and annual servicing. Aftercare should include handover information, operating instructions, documentation and a complaints route. It does not necessarily include annual servicing, breakdown cover, emergency attendance, radiators, pipework or faults caused by poor maintenance. Request the full terms in writing before installation.
Boiler grant warranty and aftercare at a glance
| Cover or service | Normally included? | What to check |
|---|---|---|
| Installer warranty for an ECO replacement or upgrade | Yes | Minimum two years and who handles claims |
| Warranty for an ECO boiler repair | Yes | Minimum one year and scope of cover |
| Manufacturer’s boiler warranty | Usually | Duration, registration and exclusions |
| Handover and operating guidance | Yes | Controls, manuals and emergency information |
| Building Regulations Compliance Certificate | Where applicable | Keep it with your boiler records |
| Annual boiler service | Usually no | Cost and booking responsibility |
| Breakdown or emergency cover | Not automatically | Response times, fees and limits |
| Radiators, pipework and existing controls | Not always | Boiler-only or whole-system cover |
What is meant by a boiler grant?
“Boiler grant” usually refers to support delivered through ECO4. Ofgem states that ECO is not technically a grant scheme: energy suppliers arrange or fund eligible energy-efficiency measures, and some households may be asked to contribute. ECO4 currently runs until 31 December 2026. onfuse ECO with the Boiler Upgrade Scheme. Despite its name, that scheme supports heat pumps and, in limited circumstances, biomass boilers—not a like-for-like replacement gas boiler. at warranty should an ECO boiler include?
Ofgem says a boiler replaced or upgraded under ECO must have a warranty of at least two years, supplied by the installer at installation. A boiler repaired under ECO must have at least one year of warranty cover. imum is not necessarily the total protection. The appliance may have a longer manufacturer’s warranty, while the installer may separately guarantee workmanship. TrustMark says registered businesses must offer a minimum two-year guarantee on work carried out, subject to the relevant terms. ritten confirmation of:
- The company providing each warranty.
- The start date and duration.
- Parts and labour cover.
- Possible call-out charges.
- Maintenance conditions.
- The claims process.
- Protection if the installer stops trading.
Manufacturer’s warranty versus installer warranty
A manufacturer’s warranty normally covers faults caused by defective boiler components. Depending on the terms, it may exclude radiators, pipework, external controls, sludge, scale, accidental damage and poor installation.
An installer or workmanship warranty concerns the installation itself, such as leaking connections, incorrectly fitted pipework or incomplete commissioning.
Manufacturer cover can exceed the ECO minimum. Ideal says its boiler warranties range from two to 12 years depending on the product, but full cover can depend on registration within 30 days. Vaillant also requires registration within 30 days under its published terms. Always check the exact model and retain registration evidence. aftercare should you expect?
Good aftercare starts with a clear handover. You should understand the heating and hot-water controls, temperature settings, safe repressurisation where appropriate and basic error-code checks without opening the appliance.
Your handover pack should include:
- Boiler make, model and serial number.
- Manufacturer’s instructions.
- Completed commissioning or Benchmark record.
- Warranty documents and registration evidence.
- Installer and complaints contact details.
- Building Regulations documentation where required.
- Annual servicing requirements.
Ofgem says a new boiler installation must be notified to the local authority, commonly through Gas Safe Register. A Building Regulations Compliance Certificate should then be issued, and householders should retain it. work, most measures must be installed by, or under the responsibility of, a TrustMark-registered business. Ofgem advises consumers to use the TrustMark complaints process where applicable. is usually excluded?
A long warranty is not the same as free servicing or cover for every heating fault.
Annual servicing is usually the homeowner’s responsibility. Vaillant’s published terms require annual servicing by a Gas Safe registered engineer, recorded in the Benchmark logbook, and state that servicing costs are not included. Ideal warns that missing annual servicing can invalidate cover. our contract says otherwise, you may pay for:
- Annual servicing.
- Non-warranty repairs.
- Damage caused by sludge or scale.
- Faults in existing radiators or pipework.
- Accidental or cosmetic damage.
- Unjustified call-outs.
- Emergency breakdown cover.
- Work resulting from inadequate property maintenance.
How to protect your boiler warranty
Confirm registration
Ask for written proof rather than assuming the installer has completed the manufacturer’s registration.
Keep every document
Retain the agreement, survey, warranty certificate, serial number, Benchmark record and compliance certificate.
Service the boiler on time
Use an appropriately registered engineer and arrange the service close to each installation anniversary.
Record every service
Keep invoices and ensure the boiler’s service history or Benchmark logbook is completed.
Report faults promptly
Follow the stated claim route before commissioning a different engineer to repair or dismantle the boiler.
Check the system boundaries
Confirm who is responsible if the boiler works but the radiators, controls or pipework do not.
Cost guide: what may still be payable?
| Item | Typical position | Indicative household cost |
|---|---|---|
| ECO-funded boiler and standard installation | Fully funded or contribution may apply | Confirm after survey |
| Minimum ECO replacement warranty | Included | £0 |
| Manufacturer’s standard warranty | Usually included if conditions are met | £0 |
| Annual gas-boiler service | Usually not included | About £70–£110 |
| Optional boiler-cover plan | Separate product | Varies |
| Non-warranty repair | Homeowner usually pays | Depends on fault |
| Upgrades outside the funded specification | Contribution may apply | Quoted after survey |
Ofgem does not set a standard household contribution because ECO providers offer different funding levels. It recommends shopping around if a contribution is requested.
Which? reports that a typical one-off boiler service costs approximately £70–£110, although location, boiler type and provider will affect the final price. ty survey is required before anyone can confirm funding, contributions or optional extras.
Why the installer matters
A long warranty cannot compensate for poor design or careless installation. Boiler performance depends on correct sizing, system cleanliness, suitable controls, proper commissioning, safe flue arrangements and appropriate pipework.
A reliable installer should explain the proposed work, identify existing-system limitations and clearly state who will provide aftercare.
Check that the business is TrustMark registered for the relevant ECO work and that gas work is completed by a suitably qualified Gas Safe registered engineer. Do not rely only on a website logo or verbal promise. should you do if something goes wrong?
Contact the installer first and report the fault in writing. Include:
- The installation date.
- Boiler make and model.
- Serial number.
- Error code.
- Photographs or videos where relevant.
- A clear description of when the fault began.
Ask whether the issue falls under the installer warranty, manufacturer’s warranty or a paid maintenance agreement.
If an ECO-related problem is not resolved, follow the installer’s formal complaints procedure and then the relevant TrustMark route. Ofgem notes that the householder’s contract is typically with the installer and recommends approaching that business first. ty does not replace your legal rights. Citizens Advice says installation problems should be raised with the business that arranged the work, even where subcontractors were involved. o compare boiler grant offers
Ask every provider:
- Which funding route applies?
- What exact boiler model will be fitted?
- Who provides the installer warranty?
- Who provides the manufacturer’s warranty?
- Are parts, labour and call-outs included?
- Is annual servicing included?
- Are radiators, pipework and controls covered?
- Who handles complaints if a subcontractor disappears?
- Which certificates will you receive?
- Will any household contribution be required?
The best offer combines suitable equipment, competent installation, clear documentation and realistic aftercare—not simply the longest headline warranty.
Frequently asked questions (FAQs)
Clear answers about ECO boiler warranties, repair cover, manufacturer protection, annual servicing, registration, installation documents and system-component coverage. Speak to Simple Green Energy .
Reviewing your boiler warranty?
Speak with Simple Green Energy about installer cover, manufacturer registration, servicing conditions, required documents and which parts of the heating system are protected.
Review my warranty detailsConclusion:
An ECO-funded replacement or upgrade should include at least a two-year installer warranty. An eligible boiler repair should include at least one year of cover.
The manufacturer may offer longer appliance protection, but registration, annual servicing and other conditions often apply. Aftercare should provide a proper handover, essential documents and a route for resolving defects. Free servicing and comprehensive breakdown cover should never be assumed.
Next step: Request a free eligibility check and home assessment from Simple Green Energy. Ask for a written “what is included” schedule covering the installation, warranty, exclusions and aftercare.
