Grant Boilers: Are They Worth It? Written by Jonathan Whiting Updated on 2 August 2023 ✔ Boiler grants have scooped dozens of awards for its energy-efficient products✔ Grant’s boilers come with a range of industry-standard endorsements✔ To receive free business energy quotes from professionals, simply fill in the form aboveResearching new boiler costs? You could consider looking into Grant boilers.To help, we've done the legwork for you. You'll find out everything you need to know about boilers from Grant here.If you'd like to skip the reading, you can get in contact with our professional installers to get a free quote. All you have to do is simply enter your details into our form and away you go. You can expect to hear back from one of our suppliers shortly with a free boiler quote for your home.What's in This Guide to Boiler Grants?01 | What Kind of Heating Systems Does Grant Manufacture?02 | Grant’s Boiler Range03 | Grant Boiler Prices04 | Does Grant Have a Good Reputation?05 | Servicing and Repairs?06 | What's Next?What Kind of Heating Systems Does Grant Manufacture?Grant offers the following boiler options:Biomass – a wood-fuelled system that offers a renewable alternative to fossil fuels, such as gas or oil.Combi – Grant’s oil boilers are compact in size and ideal for smaller properties, particularly those with little to no roof space.Condensing – the company’s condensing wood pellet-fuelled boiler provides optimal energy conversion, delivering heat throughout the home.Conventional – these oil boilers are ideal for properties with two or more bathrooms and/or low water pressure (and for whenever household members want to use lots of hot water at once). Conventional boilers are Solar Water Heating-compatible, too.Hybrid – an oil/air-source heat pump system that combines blue-flame oil-heating efficiency with renewable Aerona³ air-to-water technology.Get your free boiler quote now – simply enter your details on this form, and our local professionals will be in touch shortly.Grant’s Boiler RangeModelBoiler Type(s)Energy OutputEfficiency RatingGuarantee (in years)Warranty (in Years)VortexBlue (Internal)Conventional; Oil-fired15 kW to 36 kWA102VortexBlue (External)Conventional; Oil-fired15 kW to 36 kWA102VortexBlue (Internal Combi)Combi; Oil-fired21 kW to 36 kWA (heating); B (water)102SpiraCondensing; Wood Pellet5 kW to 36 kWA+52Vecta (Internal)Biomass; Wood Pellet4 kW to 16 kWA+52Vecta (External)Biomass; Wood Pellet4 kW to 16 kWA+52VortexAirHybrid; Oil-fired16 kW (minimum)A++ (heating); A (water)52How do I choose one?Grant boilers are available with optional (one-year or three-year) extended warranties. Here is how the top models compare:Grant produces six VortexBlue (Internal) conventional boiler models, which are all endorsed by the EST.and the External and Combi models are Which? Best Buys.VortexBlue (External) and VortexBlue (Internal) combi boilers are each available as three model options.The Spira, Vecta and VortexAir models are endorsed by the Microgeneration Certification Scheme (MCS) for its implementation of sustainable energy technology.The Spira comes in nine varieties, and the condensing Spira boiler is approved by the Heating Equipment Testing and Approval Scheme (HETAS).The Vecta (Internal) and Vecta (External) are each available as a single model.The VortexAir comes in four selectable options (two oil-only models and two hybrid models), and allows for two-stage installation (i.e. the oil boiler component can be fitted first to ensure that heat is quickly available for a property).Grant Boiler PricesModelPriceVortexBlue (Internal)£1,300 to £2,380VortexBlue (External)£2,250 to £2,900VortexBlue (Internal Combi)£2,180 to £2,430Spira£11,570 to £13,950 (including installation)Vecta (Internal)£7,000 to £19,000 (including installation)Vecta (External)£7,000 to £19,000 (including installation)VortexAir£8,200 to £9,990 (boiler only: £3,290 to £3,950; heat pump only: £4,910 to £6,040)Spira, Vecta and VortexAir heating systems are more expensive than the average boiler. However, operating one of these boilers allows homeowners to apply for the Renewable Heat Incentive (RHI).This government-backed initiative typically rewards the installation of renewable heating technology with quarterly cash payments over a 7-year period. For more information, visit the EST’s Renewable Heat Incentive page.Installation CostsThe cost of installing a Biomass boiler, i.e. the Vecta (Internal or External), is included in the price in the table above. You can expect to pay between £2,000 and £2,600 to have a combi boiler installed.The combined cost of purchase and installation for the Spira, Grant’s condensing wood pellet boiler, is noted in the table above. A conventional boiler costs, on average, a little under £2,000 to fit. Installing a hybrid heating system (i.e. the VortexAir) could set you back anywhere between £13,000 and £20,000.The cost of installation is dependent on a number of factors, including the size of the property and the number of rooms, the size of the boiler, and whether it’s a fresh installation, relocation or replacement. You can, of course, secure a free quote from The Eco Experts by completing the form at the top of this very page.What Are My Payment Options?Before you decide which boiler is best for your home, be sure to get three independent quotes in order to secure the best possible deal. We advise the same in terms of installation (assuming the cost of the boiler and its installation are not included in the same price).When you choose your boiler, bear in mind that selecting the cheapest option isn’t necessarily going to save you money in the long term. Paying a little more for reliability and all-round quality will almost certainly guarantee that you will encounter fewer issues – plus your repair bills should be smaller, too.Oil-fuelled boilers for the home are not as widespread as their gas and electricity equivalents – hence why none of the major energy companies currently supply them – and wood pellet and hybrid boilers are even less common.It’s not possible to buy directly from Grant, so when you have selected your ideal boiler, you’ll require the services of a boiler replacement company.In your area, you should have access to a number of experts who will be able to provide a range of options, and possibly even 0% financing.Does Grant Have a Good Reputation?On our Which Boiler Is Best? page, we give Grant an overall rating of 5 out of 5 stars. Click on the link to find out what we thought about the boiler company and its products.Trustpilot currently gives Grant 5 out of 5 stars too, with 85% of customers stating that its products, reliability, engineer rating and overall service are excellent. Did You Know? Which.co.uk awarded Grant a humble 4.5 out of 5 stars, which equates to an overall score of 81%.Servicing and RepairsAt The Eco Experts, we recommend that you have your boiler serviced annually – it’s the most sensible way to ensure that it remains in good working order.If you need to contact Grant about a service or repair issue, please refer to the documentation provided with your boiler – or visit the company’s online support page.What's Next?Now that your knowledge on boiler grants is up to scratch, it's time for you to do some digging around and see which one suits you best. If you think you're reading to invest in a boiler, or need a little extra guidance, pop your details on this form, and we'll put you in touch with our carefully selected partners. Written by: Jonathan Whiting An eco hero with a head for numbers, Jon's data visualisation skills are legendary. Whether it's determining what countries will survive climate change or the animals most at risk from it, he has the planet's best interests at heart.