We ( I work for John F. Grove and handle the maintenance issues at their home) purchased the Pool Heater thru CJ's Htg.& Air 6 yrs. ago. We have found it to be reliable and a smooth operating piece of equipment.
We have only had Core Technicians here 2 or 3 times and they have been quick to diagonise the problem and get the repairs done quickly. We are happy with your company and personal.