Blower heat not reaching front of the unit

[DSeler]

I have a 2011 Sightseer 33c. When the furnace turns on I have heat coming out in the back three floor vents but almost no air flow to the front floor vents. I cannot figure out why the air is not moving to the front. I am on shore power.

[Morich]

I might guess the most likely problem to be a blockage in the duct. I would first check that the vents are open, then if no problem seen, block the vents which do get heat to force the flow to the front. If flow at the front is no good, I would expect to find a blockage.
Since we all have a very thin camera handy, putting a light down one vent and looking with the camera to see if the light gets to the next vent is one way to go!
There is always the chance of the duct breaking down and letting all the heat go out the leak but that will also dramatically reduce the flow at vents which are working, so give some thought to how flow may have changed there, as well.
If you have pets, perhaps just a massive fur ball clog?

[akeagle]

Originally Posted by Morich

I might guess the most likely problem to be a blockage in the duct. I would first check that the vents are open, then if no problem seen, block the vents which do get heat to force the flow to the front. If flow at the front is no good, I would expect to find a blockage.
Since we all have a very thin camera handy, putting a light down one vent and looking with the camera to see if the light gets to the next vent is one way to go!
There is always the chance of the duct breaking down and letting all the heat go out the leak but that will also dramatically reduce the flow at vents which are working, so give some thought to how flow may have changed there, as well.
If you have pets, perhaps just a massive fur ball clog?

Could possibly be a simple duct disconnect. But to find it you may still have to follow the steps Morich mentioned to find it.

[Eagle5]

Hi Dseler,
Sounds to me like it is time to buy a new tool!
Industrial Endoscope
... and it is on sale!
Eagle5

[creativepart]

On my motorhome at least one of the front floor ducts is open to the compartments below and not hooked up to the heating ducts. Warm air from there keeps my basement compartment from getting too cold. It's the one behind the passenger seat.

[akeagle]

Originally Posted by Eagle5

Hi Dseler,
Sounds to me like it is time to buy a new tool!
Industrial Endoscope
... and it is on sale!
Eagle5

I just ordered one of those. Thanks for the heads up, Eagle5!!!

[macnut]

Eagle5, I have one of those and it has come in handy many times! I agree that checking for blockage is a good first step.

[deckape]

Try opening a forward bay door and see if the warm air in warming that bay.

[Rorytug]

Originally Posted by DSeler

I have a 2011 Sightseer 33c. When the furnace turns on I have heat coming out in the back three floor vents but almost no air flow to the front floor vents. I cannot figure out why the air is not moving to the front. I am on shore power.

I have the Sunova 33c, same coach, but Itasca. Same problem. Bedroom gets ridiculously hot. So, My solution was two fold.

First, the floor vent in the hall way. It blows directly on the thermostat, so coach never gets warm because the vent heats the thermostat. I removed the vent, cut a piece of soft foam (like the kind that comes in electronics shipping) to fit the back half of the vent. Now, all the air that comes from that vent is directed forward to the living area.

Secondly, I got magnetic vent covers from Walmart. I cut them to fit and covered all the vents. When not using the furnace, They keep dirt and debris from falling into the duct work. The front of these coaches are the coldest. So, during the day, I keep the bedroom vent covered which directs all air to the front of the coach. At night, I can partially uncover the bedroom to suit needs. I keep the bathroom vent closed (the only adjustable vent in the coach.

You have to play with the settings to find what works best. Honestly, I tend to avoid camping in locations I need a furnace. If on shore power, I mostly use my heat pumps to keep the coach toasty to 39 degrees outside. I also employ a small portable heater that I leave on in the front of the coach and often that is all that is needed. Dry camping, well different story and the furnace will drain your propane and batteries in short order.

Keeping these beasts comfortable is a technical skill mixed with art and
a never ending job. Good luck!