[Wilco]

Years ago I found the propane heater would wake me up when it turned on during the night. I purchased an oil filled heater with a digital thermostat and use it to heat the trailer. The only sound it makes is a slight click as it turns on/off from it's thermostat. I set the propane furnace about 5F lower than the heater in case it cannot keep the trailer's temperature at setpoint. This has worked for the last 5 years.