Recent Review: Our upstairs heat pump unit just ran,but did not heat or cool. Parkers came out and said it was low on refrigerant.They charged the system,and all was well for two weeks. The system then started to cool less & less. They came back out,checked and found a slow leak in the A coil. they replaced the A coil and all has been well ever since. They did not charge us for the second call to the house,or for the second re-charge of refrigerant. They came out promptly and were very professional. we are very satisfied and will recommend them to others.