Heat Pump Scams to Watch For: The Warning Signs
As heat pump installations grow and government grants make them more accessible, unfortunately so do the scammers and cowboy operators looking to exploit the market. From fake "free heat pump" schemes to non-certified installers claiming grant eligibility, the tactics are varied and sometimes sophisticated. This guide identifies the 10 most common scam tactics, provides a verification checklist, and explains exactly what to do if you encounter suspicious behaviour.
The vast majority of heat pump installers are honest, skilled professionals doing good work. But protecting yourself from the minority who are not is essential — especially when thousands of pounds and your home's heating system are at stake.
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Scam 1: The "Free Heat Pump" Cold Call
How it works: You receive an unsolicited phone call, text, or email claiming you are eligible for a completely free heat pump through a government scheme. The caller may sound professional and reference real schemes (BUS grant, ECO4) to seem legitimate. They pressure you to act quickly before "funding runs out."
The reality: The BUS grant is £7,500 — not the full cost. Legitimate schemes are never offered through cold calls. The caller may be collecting personal information for identity fraud, charging inflated prices with a "free" label, or installing substandard equipment.
Protection: Never engage with unsolicited offers. The BUS grant is applied for through your chosen MCS-certified installer, not through cold callers. If a deal sounds too good to be true, it is.
Scam 2: Fake MCS Certification
How it works: An installer claims to be MCS-certified but is not. They may show a fake certificate, use an expired certification number, or claim they are "applying" for MCS status. Without MCS certification, the installation will not qualify for the BUS grant, and there is no quality assurance.
Protection: Always verify MCS certification at mcscertified.com. Search by company name or certification number. If they do not appear in the database, do not proceed.
Scam 3: Inflated Pricing with Pressure Tactics
How it works: The installer quotes significantly above market rates (£18,000-£25,000 for a standard installation) and uses high-pressure sales tactics — "this price is only valid today," "we have a cancellation and can start next week if you sign now," or "the grant is about to be reduced."
Protection: Always get at least 3 quotes. A typical installation costs £10,000-£15,000 before the grant (£2,500-£7,500 after). Any quote significantly above this range deserves scrutiny. Never sign under pressure. Legitimate installers have waiting lists and do not need to pressure-sell.
Scam 4: The Deposit Disappearance
How it works: The installer requests a large upfront deposit (50%+ of the total cost), then delays the work repeatedly before eventually disappearing with the money. The company may then dissolve and reappear under a different name.
Protection: Never pay more than 10-20% as a deposit. A reasonable payment structure is: 10-20% on contract signing, 30-40% when equipment arrives on site, and the balance on satisfactory completion. Pay by credit card where possible for additional consumer protection under Section 75.
Scam 5: Bait and Switch Equipment
How it works: The quote specifies a reputable brand (e.g., Vaillant, Mitsubishi), but a cheaper, inferior unit is installed instead. The installer claims the original brand was "unavailable" and provides a substitute "of equal quality."
Protection: Your contract should specify the exact make, model, and part number of all major components. Do not accept substitutions without written consent and evidence that the alternative is genuinely equivalent. Check the unit's data plate on installation day to verify it matches the quote.
Scam 6: Fake Grant Schemes
How it works: The scammer invents a grant scheme that does not exist, or claims to offer a grant that is actually just a discount on their inflated price. They may create professional-looking "government" letters or websites to lend credibility.
Protection: The only national heat pump grant in England and Wales is the BUS grant (£7,500), administered through DESNZ via Ofgem. Scotland has Home Energy Scotland grants. Any other "government grant" for heat pumps should be verified directly with the relevant government body.
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Scam 7: Aggressive Door-to-Door Selling
How it works: Sales representatives knock on your door claiming to be conducting an "energy survey" or "government assessment." They then pressure you into signing up for a heat pump installation on the spot, often at inflated prices.
Protection: Legitimate heat pump installers do not sell door-to-door. Do not sign anything at the door. Under the Consumer Contracts Regulations, you have a 14-day cooling-off period for contracts signed at home, but prevention is better than cancellation.
Scam 8: No Survey, No Problem
How it works: The installer provides a quote without visiting the property or conducting a heat loss survey. They may offer a "standard package" price. The result is typically a poorly sized system that underperforms, as our horror stories analysis documents.
Protection: A legitimate heat pump quote requires a physical survey of 2-3 hours including room-by-room heat loss calculations. Any installer who quotes without visiting your home is not following MCS standards and should be rejected.
Scam 9: Hidden Charges After Signing
How it works: The initial quote is competitive, but after signing the contract, additional "essential" charges appear: upgraded electrical supply, additional pipework, radiator modifications, planning costs, or scaffolding. The final bill significantly exceeds the original quote.
Protection: Insist on a fixed-price quote that includes everything needed for a complete installation. Ask specifically what is excluded. Get the installer to confirm in writing that the quoted price covers all works necessary for a functioning system. Legitimate installers identify all requirements during the survey.
Scam 10: Fake Reviews and Testimonials
How it works: The installer's website and social media profiles feature glowing reviews and testimonials that are fabricated. Some may use stock photos of installations that are not theirs.
Protection: Check reviews on independent platforms (Google, Trustpilot, Checkatrade) rather than the installer's own website. Ask for references you can actually contact. Be suspicious of profiles with only 5-star reviews and no negative feedback — real businesses always have some less-than-perfect reviews.
Your Protection Checklist
| Check | How to Verify | Red Flag If... |
|---|---|---|
| MCS certification | mcscertified.com database | Not listed, expired, or "pending" |
| Companies House registration | find-and-update.company-information.service.gov.uk | Very recently incorporated, no accounts filed |
| Public liability insurance | Ask for certificate | Refuses to provide or expired |
| Physical survey conducted | Installer visits for 2-3 hours | Quote without visiting |
| Heat loss calculation | Included in quote documentation | No calculation shown |
| Fixed-price written quote | Detailed breakdown provided | Verbal quote only or vague pricing |
| Independent reviews | Google, Trustpilot, Checkatrade | No independent reviews found |
| References available | Previous customers willing to speak | Refuses to provide |
| Payment terms | Max 20% deposit, balance on completion | Requests 50%+ upfront |
| Warranty documentation | Written warranty terms provided | Verbal promises only |
What to Do If You Think You Have Been Scammed
- Contact your bank immediately if you have made payments. Request a chargeback (debit card) or Section 75 claim (credit card).
- Report to Trading Standards via the Citizens Advice consumer service: 0808 223 1133.
- Report to Action Fraud (the national fraud reporting centre): actionfraud.police.uk or 0300 123 2040.
- Report to MCS if the installer claimed MCS certification.
- Report to DESNZ/Ofgem if they claimed BUS grant eligibility.
- Keep all documentation — contracts, emails, texts, receipts, photographs.
- Leave reviews on public platforms to warn other consumers.
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Frequently Asked Questions
What are the most common heat pump scams?
Fake free schemes via cold calls, non-MCS installers claiming grant eligibility, inflated prices with pressure tactics, deposit disappearances, and bait-and-switch equipment substitution.
How do I verify an installer?
Check mcscertified.com, verify Companies House registration, request insurance certificates, and check independent reviews on Google and Trustpilot.
Can I really get a free heat pump?
The BUS grant provides £7,500 — not the full cost. Some means-tested schemes may cover the full cost for eligible low-income households, but these are never offered through cold calls.
What if I have been scammed?
Contact your bank, report to Trading Standards and Action Fraud, notify MCS if relevant, and keep all documentation as evidence.
How much should a heat pump cost?
£10,000-£15,000 before the grant, or £2,500-£7,500 after the BUS grant. Quotes significantly outside this range deserve scrutiny.
Should I pay upfront?
Never pay more than 10-20% as a deposit. Pay the balance on satisfactory completion. Use credit cards where possible for Section 75 protection.
Protecting Yourself in the Heat Pump Market
The heat pump market is growing rapidly, and with growth comes opportunists. The BUS grant makes heat pumps accessible — just ensure you access it through legitimate, MCS-certified channels. The real costs are transparent and well-documented. When you do proceed, the savings on running costs — especially combined with solar panels — are genuine and substantial.