Boiler precision tune up; clean and tune up boiler; check/verify water pressure, inspect and clean burners, test ignition components, test/adjust gas level, test safety circuit, check motors and pumps, checked all electrical components, checked heating temperatures, test combustion, and tested overall boiler operation. Garage heater tuneup, check gas pressures, clean burners, test safety components, verify motors are in good working order, test combustion and overall operation. While performing the garage heater tuneup I found that the exhaust motor was working a lot harder than what it is rated for, this is a sign that he motor is having internal issues and may fail soon, also looked at the propane tank and found that it was very low, I recommend having the local propane company come out and refill the tank.