About twenty years ago, I had a portable spa in the back yard of my first house. One day, the heater stopped working, so I called a repairman to come out and look at it. He told me that there would be an $85 charge no matter what, and I told him that was okay. When he got to my house, he opened up the access panel where the heater, pump, and filter lived. He looked inside, then looked back at me.…