Imogen The difference is amazing. All rooms now heated but only when the temperature drops and at a much reduced rate. Programming on the radiators was easy. Advice and service has been superb. Radiators look lovely and are giving off a radiant heat without any dust or smell. Seem to work very efficiently. I would recommend to anyone with economy seven type heating and can't praise Electric Heating Expert enough for the service and heaters. Company Response : Hi Imogen, Thanks for your review - much appreciated. I am pleased that all is working well. We will contact you again in about a month, to check-in with you and see how you're getting on with your new radiators. 16 September 2016