When I bought my house fuel , oil was 75 cents a gallon. Now it is $3.50 a gallon. I want to monitor the motor on the furnace to see how long it runs. I plan on using 2 LCD displays. One to monitor the total hrs for the winter and one to monitor a night or week. Both circuits would be resetable of course. Later on I want to hook everything up to the PC and have a thermal probe comparing outside temperature to hours run.
also I am going to use the sun to preheat the water going into the electric water heater, so I want to record before and after results.. Go Green ! lol