Which? uses cookies to improve our sites and by continuing you agree to our cookies policy

Grant VortexBlue External 36 review

Launched Assessed -

Typical price


If you’re short of space indoors an external oil-fired boiler could be just what you need. The Grant VortexBlue External 36 can cope with harsh winter weather and has an ErP A rating for heating efficiency. Our full review will tell you everything you need to know about this heat-only boiler, so read on to find out more.
Is it worth your money?
Or is it a waste of cash?
  • Efficiency rating

    score is available for members only
  • Brand reliability

    score is available for members only
  • Brand customer score

    score is available for members only

The Which? difference

As well as thousands of impartial product reviews from our Test Labs, a Which? membership also gets you:

  • Unlimited access across which.co.uk
  • Advice on the move with our apps
  • Which? magazine delivered to your door
  • The inside scoop on important issues, from scams to savings accounts

Which? can help you make good decisions

Related articles