A GEM - KEEP THIS GUY'S NUMBER!! I had difficulty finding anyone who wanted to or could work on a pool heat pump. Many pool companies say they do, but their service is limited because they can't service the actual heating function of the unit. I had a pool company who said they worked on Pentair heat pumps, but when two "technicians" arrived with a freshly printed manual in hand and couldn't figure out how to get the panels off of the unit, I knew they weren't the answer. Fortunately, I finally found Mark at MVP. Mark showed up on-time exactly as promised, and removed the panels (in about 30 seconds - and he didn't even need a manual!!). He diagnosed the problems, had the parts in his truck and fixed the issue in about 1/2 an hour! He is also a Pentair Warranty technician. If you want someone who can actually service your pool heat pump including the coolant, parts, and electronics...he's your guy!I Pool companies will change out parts, but can't do the complete service including checking coolant etc. He also is fair in his pricing. I checked Amazon just out of curiousity, and his mark up on parts was minimal! Bonus - Mark is very experienced in HVAC and will service and/or repair your AC as welll. He is a personable and professional young man and I will definitely start using him for an annual service. HIGHLY RECOMMEND! read more