Grant Vortex Pro Kitchen/Utility System review
Brand score %

- Oil
- System
This is the system boiler version of Grant's Vortex Pro Kitchen/Utility condensing oil-fired boiler. It comes with a number of programming options, including a wireless thermostat which enables the boiler to be controlled remotely from any room without the need for hard-wiring. As it runs on oil, this boiler could be a good choice if your property isn't connected to mains gas. Read our full review to find out whether this range of boilers is for you, and find out how reliable Grant oil boilers are, too.
- Pros and cons
- Heating engineer views
- What type of home is this boiler suitable for?
- Will this boiler produce enough hot water for my home?
- How efficient is this boiler?
- What controls does this boiler have?
- Is this boiler smart compatible?
- What is the warranty with this boiler?

Technical specifications
General
- Overall warranty in years2 years
- Parts warranty in years-
- Labour warranty in years-
- Manufacturer phone number01380 736920
- Manufacturer websitewww.grantuk.com
Brand scores
The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.
Find out how we assess boilersPut us to the test
Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.
Put us to the test
Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.
Suggested alternatives
Related articles
Best boiler brands
Looking to buy a new boiler? Here's our guide to the best boiler brands - and the worst. We show the best boiler brands for reliability and reveal what boiler owners and heating engineers really think of the UK's boiler brands.
Buying a new boiler
Need a new boiler? Here's everything you need to know about buying a boiler, including how much it costs, if you can get it for free, as well as the pros and cons of combis, heat-only and system boilers.
How to buy the best boiler
Expert advice on how to buy the best boiler for your home, including picking the right type, size and brand. We compare combi, heat-only and system boilers and let you know which is best for your home so you make the right choice.