Air source heat pump (Vaillant) installed in semi in Leeds, along with 8 new radiators, and removal of old condenser boiler and radiators. Whole process handled very professionally and well by IMS Heat Pumps Ltd. They responded promptly to initial enquiry, provided clear and accurate information throughout, and did not pressurize with gimmicky offers. Initial sales person was well-informed and careful, and took trouble to answer all our queries. Central administration worked smoothly, and ensured we obtained £5000 government rebate. Clear information on when installation would happen, and what we needed to do beforehand. Installation team excellent, efficient, tidy, considerate, did everything according to plan and gave us good information. Price stayed within original quote. We had a very good experience with IMS, and heat pump so far is performing smoothly (though it is summer, so it has not yet been put to the test for heating.