Trailer Vented With Furnace On?

darsben1 wrote:
But warmer air hold more moisture and when it comes in contact with the relatively cooler windows CONDENSATION will form on the windows.
Respiration will increase the humidity of the air

Yeah, and where do you propose that this additional moisture which the warm air can hold comes from?

Regular furnaces exhaust all the combustion byproducts, which includes the moisture (hydrocarbons + oxygen = H2O as a major byproduct). Running a furnace adds no additional moisture to the interior air.

Chuck_thehammer wrote:
I have an electric dehumidifier.. a 50 quart. vents closed.

windows used to sweat Bad, me, coffee pot, boiling water, cooking...
and sleeping next to the window..

x2 ... I can have every window open and moisture still collecting on the walls (and presumably inside)... I just give off too much moisture. 90 pint Frigidaire and the problem is solved, keep all the windows/vents closed and the warm air inside where it belongs.

Works good in the summer too when it's not so hot but super muggy.

Chuck_thehammer wrote:
I have an electric dehumidifier.. a 50 quart. vents closed.

windows used to sweat Bad, me, coffee pot, boiling water, cooking...
and sleeping next to the window..

X2.
We lived in a 30' 5th wheel with a super slide for one winter. This unit had a very poor 7 R values all around.
Temps down to zero and 35-45 mph winds.

We tried three fans inside with no change.

We tried the roof/window vent thing buy all it done was make a cold wet drafty camper with the furnace running 24/7.

Finally two dehumidifiers dried the wet walls/windows and we could actually place our clothes back in the closets.

I have an electric dehumidifier.. a 50 quart. vents closed.

windows used to sweat Bad, me, coffee pot, boiling water, cooking...
and sleeping next to the window..

Vent it.........

mike-s wrote:
Which furnace do you have? One of the common propane ones with intake/exhaust vents on the outside? They don't add moisture to the inside air.

If you have one of the catalytic propane ones (although they're usually called heaters and not furnaces), then they do produce lots of moisture.

But warmer air hold more moisture and when it comes in contact with the relatively cooler windows CONDENSATION will form on the windows.
Respiration will increase the humidity of the air

Which furnace do you have? One of the common propane ones with intake/exhaust vents on the outside? They don't add moisture to the inside air.

If you have one of the catalytic propane ones (although they're usually called heaters and not furnaces), then they do produce lots of moisture.

I dunno', the Polish Princess is still learning basics of heating and A/C.

But, in this case, DW is right. Without anything else but two people, you'll gain 1/2 gallon of moisture inside/day. If you get the right airflow, just one vent or window cracked may work.

Listen to your wife for 2 reasons
1) she is right opening vents or windows with the furnace on will help cut down on condensation
2) You cannot win the argument if you win you lose.