i have a 18x46 In ground pool with 10ft of the 46’ being a sun ledge. The shallow end is 12ft long. Im located in Michigan and looking for recommendations on a heat pump that will do the job yet offers a great warranty. Can you suggest a size and a manufacture? Can you also explain how the warranty works? I was told by a local pool company that if I buy a heater online it voids the warranty?
thanks for your help