Update! I said would would update my review and I thought I would. Service has been excellent. I have no idea how to care for a pool and spa. But Thunderbird has left no worries for us. Always clean blue, no dirt, no problems. We don't have to think about it. They adjust the system depending on the season. They put the right amount of chemicals in which is included in the cost. And every 6 months, they replace the filter (for a small fee) after confirming with you. You don't have to do a thing at any point. If we ever needed a schedule change, they will do it! Peace of mind.