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What is the Heat Geek Guarantee?

Mars · 2025-09-01T14:27:20Z

We regularly hear from homeowners who are researching installers, technologies or support networks before committing to a heat pump. One of the names that comes up frequently is Heat Geek. Many homeowners are impressed by the branding, technical knowledge and emphasis on higher standards of heat pump installations. But equally, we’ve had enquiries from homeowners who want clarity: what protection do I actually get if I hire a Heat Geek installer? It’s a good question, because there’s often a blurred line between Heat Geek the training provider, Heat Geek the brand, Heat Geek the installer directory and Heat Geek heat pump installation service. To make it clearer for homeowners, we’ve broken down what protections do (and don’t) exist when you hire a Heat Geek installer. Heat Geek started life as a platform to raise the bar in heating system design and installation. They provide training courses, build technical content and market themselves as a network of higher-skilled heating engineers. They now also offer guaranteed installations, going further than most. Heat Geek guarantees both the installation and the efficiency. Installation guarantee: If something happens to your installer so they cannot proceed with the job, or communication breaks down, Heat Geek will appoint another Heat Geek-trained and verified installer to complete the work. Efficiency guarantee: Unlike other companies that project a SCOP (which only covers heating and often excludes hot water), Heat Geek provides an overall efficiency guarantee. If the efficiency falls short, they will pay for the rectification work to ensure the system meets the promised standard, including hot water. A dedicated UK based account manager will oversee the project and provide additional support if required. However, you cannot access this guarantee if you hire the installer directly. This is where the confusion often arises. Many installers who have completed Heat Geek training display the Heat Geek logo on their websites, vans, T-shirts and paperwork. This gives them credibility and, in the eyes of many homeowners, positions them as part of a trusted, quality-assured network. But just because an installer displays the Heat Geek logo doesn’t mean you automatically get protection from Heat Geek as an organisation. If you want the protection of Heat Geek’s installation and efficiency guarantee, you must hire your installer through the Heat Geek website. Here’s how it works: you enter your postcode on their site, receive an instant heat loss calculation and installation estimate, and if you’re happy you can purchase a design consultation. At this stage, Heat Geek assigns you a verified installer – this will not be an installer of your own choice, but if you have a specific installer in mind you can ask them for their Heat Geek upgrades link and that will automatically assign them to you. After the consultation, you’ll receive a fully guaranteed contract directly with Heat Geek for the installation. To validate the guarantee, they will also need digital access to monitor your system after the installation. Once signed, you’re covered. What’s worth pointing out is that in order for an installer to be able to work under Heat Geek’s guarantee, they must go through rigorous training, a business audit, telephone assessments and on-site practical tests. If they pass, they become Verified. After this, Heat Geek digitally monitors their installations to ensure standards are maintained. Heat Geek also makes this installer directory available for free on their website. But here’s the catch: if you use these details to contact and hire the installer directly, you have no contract with Heat Geek, and no guarantee from them. If you do receive a poor installation from a Heat Geek-trained installer without their guarantee, the only recourse Heat Geek offers is removing that installer from their directory, provided they failed to meet the “best practice” standards outlined in Heat Geek’s Code of Conduct. They may also be retrained. Any installer removed from the platform is required to stop using Heat Geek branding immediately. So, if you see the Heat Geek logo on an installer’s webpage, don’t assume that Heat Geek are backing the job. Unless you’ve gone through the official Heat Geek portal, you won’t have the safety net of their guarantee. Heat Geek has told us that out of hundreds of installers, they have only had to remove three so far due to “changes within the installer’s company after verifying that led to a drop in standards.” If you hire directly, your only safeguards are the installer’s own contractual guarantees, your statutory protections under the Consumer Rights Act or potentially Section 75 protection if you pay by credit card. You may also have recourse through schemes like MCS or RECC if the installer is registered with them directly. What you won’t have is the additional safety net of Heat Geek’s organisational backing. The renewable heating industry is still i...

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Air Source Heat Pumps (ASHPs)

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Mars

(@editor)

Illustrious Member Admin

Joined: 5 years ago

Posts: 4740

Topic starter 10/06/2026 8:40 am

@jamespa great question as we’ve not seen a single mention of the mini store on the forums.

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Michael Waring

(@michael-w)

New Member Contributor Professional+

Joined: 1 month ago

Posts: 4

10/06/2026 9:04 am

@editor We've only installed one so far, a 60XS model, but it's performing well from a functionality point of view.

That said, I'd always choose a standard unvented cylinder where possible. They're generally more efficient and offer greater hot water storage capacity. The Mini Store isn't a direct replacement and needs to be designed carefully around the property's hot water demand and the overall heating system.

Our installation is in a small property with one shower, one basin and a kitchen sink. We also fitted 5 lpm flow restrictors to all outlets as part of the design. In that application, it's working well.

The Mini Store does have some advantages beyond being compact. There's no requirement for a D2 discharge pipe, which can make installation easier in certain properties, and it can be a useful option where space constraints make a conventional cylinder difficult or impossible.

For the right property and when designed correctly, I think it's a good solution. But if space allows, I'd still lean towards a standard unvented cylinder.

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JamesPa

(@jamespa)

Illustrious Member Moderator

Joined: 3 years ago

Posts: 5146

10/06/2026 9:11 am

Posted by: @michael-w

↑

For the right property and when designed correctly, I think it's a good solution. But if space allows, I'd still lean towards a standard unvented cylinder.

Thanks. That's exactly what I was expecting/hoping for if it does in fact fill a niche. I think it's been clear all along that where a standard cylinder fits that is a better choice, but as you say some properties won't fit that profile.

This post was modified 1 month ago by JamesPa

4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.

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Batpred

(@batpred)

Noble Member Member

Joined: 2 years ago

Posts: 1082

10/06/2026 11:16 am

Thanks, we also heard about the thermal store, to be used in combination with a cylinder I believe.

It was described as similar to a combi, but to be honest, I could not see how, as our combi is 28kw and the HeatPump being considered is 7kw (even if it can deliver slightly more in some cases). It would have been nice to see a diagram of how the thermal store would work.

That also came up in the initial proposals that the system gave and it was obviously adding to the cost. We were not interested, as it could be avoided by using a smaller cylinder. We ran out of time when going through all the options. Given hot water will be 10-15% of the cost, investing more in it will most likely have lower return, compared to upgrading rads..

8kW Solis S6-EH1P8K-L-PLUS hybrid inverter; G99: 8kw export; 16kWh Seplos Fogstar battery; Ohme Home Pro EV charger; 100Amp head, HA lab on mini PC

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