Vortex HE Outdoor Combi Boiler Reviews (Combi Condensing)
Our rating: 5/5![]()
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Efficiency rating: 94.2%*
Average householder rating: 1/5
Average installer rating:
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Grant Vortex HE Outdoor Combi Boiler
The Grant Vortex HE outdoor combi is an impressive and effective boiler that makes up part of the extensive and highly regarded high efficiency range offered by Grant Vortex, one of the leading manufacturers of boilers in the country. This unit is ideal for those hoping to make full use of their indoor space and want an outdoor boiler. The extensive and rigorous testing the boiler goes through before hitting the market ensures it will be reliable and resilient under a number of conditions. The Outdoor Combi is also very efficient and, with its efficiency of over 90%, has an A rating under the SEDBUK (Seasonal Efficiency of Domestic Boilers in the United Kingdom) guidelines. This energy-efficiency not only minimises the emissions of gasses that are harmful to the atmosphere, but can also help to reduce a household's energy bills by a considerable chunk.
The Grant Vortex HE Outdoor Combi comes in a few models from outputs of 21kW up to 36kW. The units are carefully protected and are intelligently designed with straightforward plumbing and wiring to ensure that the installation is as quick and easy as possible. It is also easy to maintain and operate and has a very quiet performance.
A detailed list of the Grant Vortex HE Outdoor Combi specifications are as follows:
- High Efficiency
- SEDBUK A Rated
- Range of 21kW up to 36kW DHW outputs
- Modern and stylish design
- Robust and durable manufacturing
- Extremely quiet performance
- Simple casing and pipe work for easy installation
Comments & reviews
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* When review applies to a range of boilers, efficiency applies to best model in range. Always check with manufacturer.

By Steve Riley on 09 Mar 10
Householder rating: 1/5
I've bought some pups in my time but the Grant Outdoor boiler is probably the worst piece of equipment I have ever purchased. It was fitted just 3 years ago and last week I spent £226 on having it serviced. It needed a new hose and a new pressure tank. This week the pressure cut out switch failed because of a leak, this in turn caused the water pump to burn out - so hot that the electrics melted. The engineer is trying to fix it now but,surprise surprise, Grant have no switches in stock! Yet another night freezing with no hot water and no heating. Looking for a new boiler? Grant yourself a favour and look elsewhere!