Bedroom Floor Heat Vent

[meaz93*]

Temps camping in the mornings down to °39-°41. Noticed that the bedroom heat temp was at around 10°+ lower than the main living at 75°-°81. Touched the floor vents and they were not very hot?
So went through the checklist; fuses, any obstruction to vents, any dirt or cobwebs in vent cover , inspect outside exhaust vent, propane level, reset furnace switch , etc.
Than I take the furnace vent cover / front panel off and inspect. Than I notice the reversed hose clamps? I mean I get it...a lot of the cabinetry at the factory is not installed before pipes and water lines, yet their is little regard for easy access to removal / adjustment of said clamps to furnace pipes?
Also noticed the metal flange adapters to furnace were very loose and of course clamps to vent flexible pipe.
Tightened and adjusted everything....funny how a little prevent maintenance can give you peace of mind?
Tonight it will drop to high °30's....hope that minor adjustment makes a difference?

[Canonman]

Like you, our bedroom vent has very little flow. I've checked from the plenum and discover that there are 3 ducts. Living area, bedroom bathroom and underbelly. Everything seems tight and my only guess as to why the bedroom bathroom vents have noticeably less flow is that they are further away from the furnace.
I'd like to know from those with more HVAC experience if this is normal or should I be looking further as we are headed into some colder camping areas.
Thanks

[jasin1]

Originally Posted by Canonman

Like you, our bedroom vent has very little flow. I've checked from the plenum and discover that there are 3 ducts. Living area, bedroom bathroom and underbelly. Everything seems tight and my only guess as to why the bedroom bathroom vents have noticeably less flow is that they are further away from the furnace.
I'd like to know from those with more HVAC experience if this is normal or should I be looking further as we are headed into some colder camping areas.
Thanks

The flex duct could be pinched closed or have a tear in it..with just three? ducts I can’t imagine the little bit of extra footage to the bedroom would cause the difference your describing…try turning it on fan only and block off one or more other registers and see if it noticeably increases

[Canonman]

I've installed closeable registers in the living area. Closing them makes some difference but not much. I've inspected the flex duct where I can see it and it looks ok. No rips or kinks. No way to close or isolate the underbelly duct that I can find. I'll try again and see if I can find anything causing a blockage.

[slow]

Mine had a flexible duct hose about 3 feet long and shaped like a S to the bedroom register from the main under floor rectangular duct. I replaced the flex duct with elbows and straight duct and it made a huge difference. There is no temp difference between the bedroom and main area.