My closed hot water floor heating system is 7 years old. A few months ago the temp in the house only got to 60 degrees with thermostat set at 74. Bumped thermostat to 80 but still only 60 degrees in house. A plumber came and replaced gauges, put in new bigger pump and finally a brand new water heater. It is now warm in the house BUT the water heater is running 75% of the time -- on for 45 minutes then off for 15 minutes! I've gone through 600 gallons of propane since Jan. 1 and the tank is almost empty again. Yesterday the plumber returned and put in a "loop"? and a splitter. But he can't figure out why the system is running all the time. He blames the contractor that installed the system.
I'm into this for more than $5000 at this point not counting the propane bill at the co-op. Ideas??