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Grant Vortex Eco External System review

£2,100.00 Typical price

Brand score %

Key features
  • Oil
  • System

Installing your boiler outdoors can save valuable space in your home, and the Grant Vortex Eco External System oil boiler is specially designed to cope with all that the weather can throw at it. This boiler is the system version of Grant's Eco External heat-only boiler, fitted with a sealed system kit. Our full review lists the Eco External's key features and reveals what our survey on boiler reliability told us about Grant boilers.

Included in our expert review
  • 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?
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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 boilers
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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.

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