Furnace Heat Coming Through A/C Vents on 2025 Adventurer 34W

[sjvaught]

Is there a way the heat can come only through floor vents and not ac vents? 2025 Adventurer 34W

 

[creativepart]

I'm afraid I changed out my OEM thermostat in my old 2017 Adventurer that I can't advise you well on settings for those options. I switched to the MicroAir WiFi thermostat years ago and never looked back.

But looking at the Operator's Manual I see your 2025 Adventurer has a control screen not a standard thermostat.

I see Auto HVAC, and Cool and Heat options. I'd turn off Auto and Cool and just use Heat and presumably that would force the LP furnace to come on only.

 

[Chris Old]

Turn fan to AUTO FAN. then ceiling unit will not turn on with furnace.

 

[Morich]

Can we check which set of heat and air you are asking about? Do you mean the automotive part at the dash or the house units that feed the main body of the RV?
If asking about the automotive items, it may be that a control that moves various airflow flaps is not working!

 

[sjvaught]

I was asking about house units

 

[Morich]

Thanks for the reply! Always good to start off making sure we are speaking about the same parts of the RV and we can get different meanings of the same words!
Being human, we are often guilty of not saying exactly what the other person hears!
But part of my question may be simply that I do not know your RV as well as I might like. I know there are often faults in the drawings I use, so it makes me slow to say what I see is true!
But when I look at those drawings for your specific RV, I see no ductwork connecting the heat and air!

This seems to only show the two roof units with little chance of them crossing into the heat ducts? Possible options included on your RV that are not shown here?

But then when I also look at the heating in the rear and ducts, those are only shown as being near the floor with no connection to the cooling.
So I may still be confused on the question? Are you wanting to verify it should only come out one or is it possible that when first turning on the roof units, there is heat coming out on a hot day? Possible that there is a lot of heat stored in the roof that has to cool before blowing cold?
The problem I often see is that different RV are prone to operating in different ways, so those with experience in older RV, may not have the same experience as what you have!
But I also know that good solid info can be super hard to find! It may be worth the time to drop in at an RV dealer and hope to find one where they are up on the details of what they sell? Or possibly better is giving Winnebago a call for details as they are certain to be better informed on the new RV than their dealers. Those dealers who sell lots of different brands may not always be up to date, either!
The devil can be in those little details!

 

[Journey39n]

Just wondering, are you talking about the propane furnace, which blows through the floor, and the ceiling vents that would blow heat from the heat pump function of the roof top a/c units, if so equipped, all running at the same time? And that you would like only the furnace floor vents to work when heating?

 

[sjvaught]

Thanks for the reply! Always good to start off making sure we are speaking about the same parts of the RV and we can get different meanings of the same words!
Being human, we are often guilty of not saying exactly what the other person hears!
But part of my question may be simply that I do not know your RV as well as I might like. I know there are often faults in the drawings I use, so it makes me slow to say what I see is true!
But when I look at those drawings for your specific RV, I see no ductwork connecting the heat and air!
View attachment 2491600
This seems to only show the two roof units with little chance of them crossing into the heat ducts? Possible options included on your RV that are not shown here?
View attachment 2491601
But then when I also look at the heating in the rear and ducts, those are only shown as being near the floor with no connection to the cooling.
So I may still be confused on the question? Are you wanting to verify it should only come out one or is it possible that when first turning on the roof units, there is heat coming out on a hot day? Possible that there is a lot of heat stored in the roof that has to cool before blowing cold?
The problem I often see is that different RV are prone to operating in different ways, so those with experience in older RV, may not have the same experience as what you have!
But I also know that good solid info can be super hard to find! It may be worth the time to drop in at an RV dealer and hope to find one where they are up on the details of what they sell? Or possibly better is giving Winnebago a call for details as they are certain to be better informed on the new RV than their dealers. Those dealers who sell lots of different brands may not always be up to date, either!
The devil can be in those little details!

Thank you so much

 

[Morich]

We may still be missing some points as a closer look at the roof mounted AC units, does show a "heat strip'??? Not at all sure what that actually means, though. It looks like it might give some small amount of heat from the air units on the roof? Or is that some idea of keeping the coils in the unit from freezing up as some air conditioners can do?
It doesn't look like it would give much heat but maybe a small amount when not needing ful blown furnace heat?

I'm ready to say, "I don't know" on those details! A manual that covered the air unit itself would likely be a good place or somebody who is really into knowing the details of that specific RV as each one has some quirks that other RV don't!

 

[Journey39n]

heat strips in heat pumps give the unit a bit more range for creating heat. My heat pump runs out of heating ability if the outside temp drops below 37 degrees.

In this case, the heat pumps and the propane furnace are not connected in the duct work, ceiling for the a/c and heat pumps on the roof, and the propane furnace on the floor. However, the electronics in the thermostats may be connected to produce heat with both units at the same time, depending upon the particular design. In my case, the propane furnace will kick on if the heat pump can't keep the interior temperature at a preset level.

Your RV manual should detail the operating specs of both units. Sometimes combined at the thermostat like mine, or some have separate thermostats for each type of unit.

 

[Morich]

So have we come around to this should be heat pumps, not simple air conditioners on the roof? That would seem to put the question of getting heat ONLY out of the floor vents, back into how to better control the air units to avoid the heat pump operation coming on, correct? Not a heat pump user, so deep mystery on fine points to me, but that seems a detail that is likely skipped over in manuals? How deep does the onhand info go, may be a question!
Does it sound like the rooftop units are actually heat pumps, meaning they can cool or at times they can "run in reverse" to add some heat. Then the unit in back near the floor which feeds the floor vents is a furnace for heat only!
Learning how best to use the controls, seems where we are down to, if I'm following correctly?
One of those magic things if we know exactly which buttons to push? UGH!
I hate the modern world where we are expected to know all things when even the builder doesn't want to tell us?