Community Forums

macbob · 12-23-2016, 07:49 AM

Leaving in A.M and temp will be about 30 degrees--How long should the block heater be on before starting the engine??
Thanks

Sgt472 · 12-23-2016, 07:57 AM

Leave it on all night and shut it off just prior to starting.

**Lt Dan** · 12-23-2016, 07:58 AM

It probably needs at least a couple of hours, but you can also run it all night. I ran mine about 4 hours a few days ago since I had to start and move in mid 20s temperatures. It started right up with no problems.

Pigman1 · 12-23-2016, 10:17 AM

Our last 2 coaches had an air intake heater as well as a block heater. Because of this I do not even consider using the block heater until I see 25 or below for at least 4 hours. If I'm expecting that, I'd turn it on before I go to bed.

DSL417 · 12-23-2016, 10:27 AM

FWIW, the block heater doesn't need be used above 10-20 degrees; your intake heater will do the job sufficiently above that. But if you must, make sure you unplug it (or however you turn it off) before you depart.

If you are using your Aquahot (or Oasis), you likely have and engine pre-heat circuit (button in the Aquahot selection panel) which will accomplish the same, and at those temps, likely that your Aquahot is on???!!! Unless you're in storage.