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Grant Boilers: Compare Efficiency, Warranty & Price


Grant are an award-winning and innovative heating company with over 40 years of heritage. For many years Grant specialised in oil-fired condensing boilers but more recently the company has added innovative renewable technologies like air source heat pumps, biomass boilers, solar thermal and hybrid systems to their range.

For properties that aren’t connected to the gas network, an oil boiler is a great alternative to a gas boiler as oil is a fuel that can be stored onsite. Grant oil boilers are available as combi and regular units so there’s a suitable heating system for small and larger properties. When looking for a suitable oil boiler, you will need to take into account the output rating, efficiency, warranty and potential cost of each unit.

  • Output rating: Your replacement boiler needs to have an output rating that suits the central heating and hot water demands of your home. Otherwise, your new boiler will be unable to meet demand or your energy bills could begin to rise.
  • Efficiency: Oil boilers burn oil to provide central heating and hot water but as a fossil fuel some waste gases are produced as it’s burned. This means that not all of the oil will be converted into usable energy. The higher the efficiency of a boiler, the more fuel it’s capable of using, making it more likely that it will help to lower your energy bills.
  • Warranty: All boilers come with a warranty, which means that you’re protected by the manufacturer in the unlikely event of a fault. Depending on the manufacturer and boiler model, the length of the warranty and what it covers will vary. Grant oil boilers are covered by a 2 year warranty as standard.
  • Price: Grant oil boilers aren’t the most budget-friendly with prices ranging from around £1,200 up to £3,100.

To find the most suitable oil boiler for your home, it’s well worth taking the time to compare boilers. Our Boiler Comparison Tool below allows you to compare the output rating, efficiency, warranty period and potential cost of up to 4 different boilers. Hit the ‘add boiler’ symbol to add a boiler into your comparison and don’t forget to include your existing boiler.

Choosing the right boiler for your home can be a daunting task. That’s why we recommend consulting with a Gas Safe registered heating engineer. With Boiler Guide, you can easily compare quotes from multiple engineers near you to ensure you’re getting the best advice at the best price. Click below to get started!

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Compare Grant oil-fired combi boilers

Grant oil combi boilers provide central heating and hot water on demand as and when needed by heating up water directly from the mains. Grant manufacture a range of different combi boilers with output ratings ranging from 21 kW up to 36 kW and you can take your pick between a unit designed for internal or external installation.

Boiler Model kW Efficiency Warranty Typical Price
Grant VortexBlue Internal 21kW Combi Oil Boiler 21kw 90.8% 2 years £2,330 VIEW
Grant VortexBlue Internal 26kW Combi Oil Boiler 26kw 91.7% 2 years £2,750 VIEW
Grant VortexBlue Internal 36kW Combi Oil Boiler 36kw 94.5% 2 years £2,500 VIEW
Grant VortexBlue External 21kW Combi Oil Boiler 21kw 90.8% 2 years £2,185 VIEW
Grant VortexBlue External 26kW Combi Oil Boiler 26kw 91.7% 2 years £2,325 VIEW
Grant VortexBlue External 36kW Combi Oil Boiler 36kw 94.5% 2 years £3,105 VIEW
Grant Vortex Pro Internal Combi 21kW Oil Boiler 21kw 90.8% 2 years £2,175 VIEW
Grant Vortex Pro Internal Combi 26kW Oil Boiler 26kw 89.5% 2 years £2,340 VIEW
Grant Vortex Pro Internal Combi 36kW Oil Boiler 26kw 94.5% 2 years £2,985 VIEW
Grant Vortex Pro Combi XS Compact 26kW Oil Boiler 26kw 90% 2 years £2,325 VIEW
Grant Vortex Pro Combi External 21kW Oil Boiler 21kw 90.8% 2 years £2,185 VIEW
Grant Vortex Pro Combi External 26kW Oil Boiler 26kw 91.7% 2 years £2,295 VIEW
Grant Vortex Pro Combi External 36kW Oil Boiler 36kw 94.5% 2 years £2,600 VIEW

Compare Grant regular boilers

Regular boilers are best installed as part of a heating system which already includes a regular boiler. So if your home doesn’t already have a regular boiler, a heating engineer is likely to recommend a combi or system boiler instead. With output ratings of 16 kW right up to 70 kW, a Grant regular oil boiler can be installed in properties of varying sizes.

Boiler Model kW Efficiency Warranty Typical Price

Available

Grant Vortex Eco Utility 35kW Regular Oil Boiler 35kw 90.3% 2 years £1,675 VIEW
Grant Vortex Pro External 21kW Regular Oil Boiler 21kw 90.7% 2 years £1,558 VIEW
Grant VortexBlue Kitchen/Utility 21kW Regular Oil Boiler 21kw 90.8% 2 years £2,155 VIEW
Grant VortexBlue Kitchen/Utility 36kW Regular Oil Boiler 36kw 91.7% 2 years £2,100 VIEW
Grant VortexBlue External 21kW Regular Oil Boiler 21kw 90.8% 2 years £2,225 VIEW
Grant VortexBlue External 26kW Regular Oil Boiler 26kw 91.7% 2 years £2,605 VIEW
Grant VortexBlue External 36kW Regular Oil Boiler 36kw 94.5% 2 years £2,396 VIEW
Grant Vortex Eco Utility 21kW Regular Oil Boiler 21kw 92.7% 2 years £1,595 VIEW
Grant Vortex Eco Utility 26kW Regular Oil Boiler 26kw 91.7% 2 years £1,595 VIEW
Grant Vortex Eco External 21kW Regular Oil Boiler 21kw 92.7% 2 years £1,475 VIEW
Grant Vortex Eco External 26kW Regular Oil Boiler 26kw 91.7% 2 years £1,695 VIEW
Grant Vortex Eco External 35kW Regular Oil Boiler 35kw 92.4% 2 years £1,820 VIEW
Grant Vortex Pro Kitchen/Utility 21kW Regular Oil Boiler 21kw 90.8% 2 years £1,420 VIEW
Grant Vortex Pro Kitchen/Utility 36kW System Oil Boiler 36kw 91.7% 2 years £2,000 VIEW
Grant Vortex Pro Kitchen/Utility 58kW Regular Oil Boiler 58kw 94.5% 2 years £2,055 VIEW
Grant Vortex Pro Kitchen/Utility 70kW Regular Oil Boiler 70kw 91.6% 2 years £2,200 VIEW
Grant Vortex Pro External 26kW Regular Oil Boiler 26kw 91.20% 2 years £2,300 VIEW
Grant Vortex Pro External 36kW Regular Oil Boiler 36kw 94.5% 2 years £2,285 VIEW
Grant Vortex Pro External 46kW Regular Oil Boiler 46kw 90% 2 years £2,355 VIEW
Grant Vortex Pro External 58kW Regular Oil Boiler 58kw 91.9% 2 years £2,045 VIEW
Grant Vortex Pro External 70kW Regular Oil Boiler 70kw 91.6% 2 years £2,135 VIEW
Grant Vortex Eco Internal Wall Hung 21kW Regular Oil Boiler 21kw 90.1% 2 years £1,660 VIEW
Grant Vortex Eco External Wall Hung 16kW Regular Oil Boiler 16kw 90.5% 2 years £1,810 VIEW
Grant Vortex Eco External Wall Hung 21kW Regular Oil Boiler 21kw 90.1% 2 years £1,890 VIEW
Grant Vortex Pro Kitchen/Utility 36kW Regular Oil Boiler 36kw 94.5% 2 years £2,035 VIEW
Grant VortexBlue Kitchen/Utility 26kW Regular Oil Boiler 26kw 91.71% 2 years £1,582 VIEW
Grant Vortex Boiler House 21kW Regular Oil Boiler 21kw 90.7% 5 years £1,365 VIEW
Grant Vortex Boiler House 26kW Regular Oil Boiler 26kw 90.7% 5 years £1,855 VIEW
Grant Vortex Boiler House 35kW Regular Oil Boiler 35kw 94.6% 5 years £2,045 VIEW
Grant Vortex Boiler House 46kW Regular Oil Boiler 46kw 90% 5 years £1,845 VIEW
Grant Vortex Boiler House 58kW Regular Oil Boiler 58kw 91.9% 5 years £1,775 VIEW
Grant Vortex Boiler House 70kW Regular Oil Boiler 70kw 91.6% 5 years £2,085 VIEW
Grant Vortex Pro Kitchen/Utility 26kW Regular Oil Boiler 26kw 91.7% 2 years £1,675 VIEW
Grant Vortex Pro Kitchen/Utility 46kW Regular Oil Boiler 46kw 90% 2 years £2,085 VIEW
Grant Vortex Eco Internal Wall Hung 16kW Regular Oil Boiler 16kw 90.1% 2 years £1,535 VIEW
Grant Vortex Pro Boiler House 26kW Regular Oil Boiler 36kw 94.6% 2 years £1,525 VIEW
Grant Vortex Pro Boiler House 46kW Regular Oil Boiler 46kw 90.6% 2 years £1,740 VIEW
Grant Vortex Pro Boiler House 58kW Regular Oil Boiler 58kw 91.9% 2 years £2,000 VIEW
Grant Vortex Pro Boiler House 70kW Regular Oil Boiler 70kw 96.2% 2 years £2,125 VIEW

Send us a quick enquiry today using our simple form and we’ll find you up to 3 free quotes from Gas Safe heating engineers near you. There’s no obligation to use any of the quotes you receive, and you can save a significant amount of money by comparing prices.

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Benefits of Grant combi boilers

Grant Vortex Pro Internal Combi 26e Oil BoilerEnergy efficiency is a top priority for Grant Boilers and their popular Vortex Pro combi boiler is no exception.

Winner of Which? Best Buy in 2008, this range is still proving a great choice in UK homes. Quick and simple to install as well as compact and unobtrusive, choosing the Grant Vortex combi makes sense for lots of reasons.

Combi boilers are one of the most popular choices for homeowners, not least because they deliver hot water for taps or radiators on demand.

The other big benefit is that there is no need for a bulky hot water tank or a large hot water cylinder to be installed either.

Many modern homes don’t have a traditional ‘airing cupboard’ or sometimes even a loft – which means that a compact combi boiler really is the only effective choice in these cases.

  • Approved by the Energy Saving Trust
  • 2-year boiler warranty and 5-year heat exchanger warranty
  • High energy efficiency rating
  • Available in a range of outputs
  • Ideal for smaller off-grid homes

When you’re working to a specific budget for your new boiler, and you’re keeping an eye on the ongoing running costs for heating your home in the colder months, it pays to take time to do the sums and work out the best deal for you.

When considering the cost of a new Grant combination or ‘combi’ boiler, take into account the purchase price, the installation cost (using a qualified and regulated heating engineer) and the overall running costs for fuel, servicing and maintenance.

Once you have the complete picture, it’s much easier to manage. And you will hopefully be pleasantly surprised at how much more energy efficient and therefore cheaper to run a new boiler proves to be. Get quotes for a new Grant boiler.

Grant regular boilers

Grant Vortex Pro External 15-21 Regular Oil BoilerA regular boiler system comprises three things – the boiler itself, a hot water cylinder, and a cold water storage tank – which is the part that usually goes in the loft.

Regular boilers are common in older properties, although modern versions are now sleeker and more energy efficient.

So you might think you just want a simple, like-for-like replacement for your regular boiler, however there are still some decisions to be made about exactly what system would be best for your home.

Grant Boilers have various options in their regular range so one of the big considerations is where the boiler needs to go.

With a choice of floor standing for utility rooms, wall-mounted for kitchens and even an external boiler, there’s plenty to think about.

You’ll also need to take into account the size of your property and the number of radiators and bathrooms the boiler will be serving.

Grant’s regular range offers a choice of options.

Benefits of a Grant regular boiler

  • Benefit from much greater energy efficiency by replacing an old boiler
  • You may be able to utilise existing pipework if you’re simply replacing an older regular boiler
  • Varying output options to meet differ levels of demand
  • Standard warranty automatically included for extra peace of mind
  • Easy-to-use controls

You’ll probably already be aware that a new boiler is a significant outlay so it’s important to take the time to shop around to ensure you get exactly the right system for your needs – and of course make sure you aren’t paying over the odds.

A good tip is that it’s always a good idea to get multiple quotes for your new boiler installation. Contacting 3 reputable heating engineers for a quote is good practice as individual rates can vary quite a lot. Our team at Boiler Guide can help you with doing exactly this as we’re partnered with highly qualified Gas-Safe registered heating engineers who will offer you their most competitive quotes.

To start getting quotes from up to 3 of these heating engineers, simply take less than a minute to fill in our form.

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Grant boiler service

It’s important to keep your boiler in the best possible condition with an annual boiler service by a professional engineer. This will ensure the boiler can operate as efficiently as possible, keeping heating bills to a minimum, and that there are no potential safety issues to be concerned about. A boiler service is also a great way to catch and fix small repairs before they have the chance to worsen over time and cause an expensive breakdown. Find out what’s involved in an annual boiler service, why it’s so important, the benefits and how much they cost in Grant Boiler Service.

Grant boiler warranty

Every boiler manufacturer offers a standard warranty with their boilers which last between 1-10 years. The warranty is your insurance policy and means if a fault develops the manufacturer will resolve it within a specified time frame. Some warranties include both parts and labour while others may only cover parts. The most important thing to remember is to get your boiler serviced by an OFTEC registered engineer every year as failing to do so is likely to invalidate your warranty. For more detail about this brand’s warranty (including the small print) take a look at Grant Boiler Warranty.

Grant boiler repair advice

Even the highest quality boiler can develop faults and problems as they age. Some are minor issues you may be able to handle yourself but most will need an OFTEC registered engineer to diagnose and repair the problem. To find out if there are any common problems associated with this manufacturer you can read our guide to Grant Boiler Repairs & Common Grant Boiler Problems.

Grant renewable heating solutions

Although for many years Grant specialised in oil boilers the company is now focused on incorporating more environmentally friendly products into UK homes. The product range in includes the Aerona3 air source heat pumps, Spira and Vecta biomass boilers, Sahara solar thermal collectors and VortexAir hybrid systems which combine an oil boiler with an air source heat pump.

Grant is just one of many good boiler manufacturers available in the UK. All boiler manufacturers have different benefits for everyone. Just as you compare different manufacturers and their models, you should also compare quotes for the boilers you’re looking for. Comparing quotes helps you find the best deal and gives you the freedom to choose the best deal.

We can help you get 3 quotes for free from trustworthy heating engineers who install boilers from Grant, Baxi, and other top rated boiler manufacturers. If you want to take the next step towards getting a new boiler, just click the button below. You don’t have to accept any quotes you receive.

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Reference

Visit the Grant website for further details.

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