Marc2007
Missouri
New Member
Joined: 11/03/2009
View Profile
 Offline
|
The furnace in my fifth wheel is not blowing evenly. In the living room it blasts out of the vents and up front in the bedroom it barely blows at all.
Is this supposed to be like this or do I have a duct problem? Is it because heat rises and if it wasn't like this the elevated bedroom would be too hot?
It heats up fine in the bedroom like it is but I am wondering if a mouse chewed through the duct or something and I wonder if I am wasting propane heating the space under the floor.
2008 Silverado 3500 LT DRW Duramax/Allison
2007 Gulfstream Canyon Trail 29RLFW
|
FXSTOHIO
Ohio
Senior Member
Joined: 01/27/2009
View Profile
Good Sam RV Club
|
The farther the duct is away from the furnace the less air output you will have. I have the most output in the bathroom because my furnace is closer to it than I have in the bedroom.
2008 Pilgrim Lite 21LRB
2004 Chevy Silverado Extended Cab 4x4 5.3 Tow Pkg 3.73
Yamaha EF2400IS
|
CHV_FRK
Black Jack, MO
Senior Member
Joined: 10/28/2007
View Profile
Good Sam RV Club
Offline
|
Same here... Four taps off the furnace total. 3 go to the rear vents and 1 to the bathroom and bedroom and now our unit has balanced flow.
Dana and Natalie
2008 Chevy Silverado 3500HD LT DRW CC LB 4x4
-PPE Programmer, MRBP Exhaust, Diesel Manor Triple Gauge Pack, FS2500, 60 Aux Tank/Toolbox, Line-X, Full Tint, Curt 20K Hitch
2008 Jayco Designer Fifth Wheel
35RLSA 38'9, 13,500lbs. Loaded.
|
smkettner
Southern California
Senior Member
Joined: 03/21/2005
View Profile
Good Sam RV Club
|
I found some of my ducting collapsed. Use a mirror and flashlight to make sure it is open and clear. I think too much insulation was packed around the ducting. I used some 1.5" flat aluminum stock from Home Depot to prop the ducting open.
2001 F150 SuperCrew
2006 Keystone Springdale 249FWBHLS
|
cruiserjs
Aurora, CO, USA/ Mesa AZ/ openroad
Moderator
Joined: 07/02/2003
View Profile
Good Sam RV Club
Offline
|
Our bedroom ducts are farthest from the furnace and heat flow is minimal. When the fiver was relatively new I had a tech tell me - just put one of the sink covers over an intermediate duct openin. That sure improved the bedroom heat flow. Replace that floor vent with one that has closing louvres for the same result.
Colorado Cruiser
Cruiser CF29CK 5th wheel; 2009 GMC Sierra 2500HD, 2wd, short bed
wonderful lifetime traveling companion/spouse
|
|
|
tvman44
Southwest Louisiana
Senior Member
Joined: 09/25/2007
View Profile
Offline
|
Same with ours, the bedroom is the fartherest from the blower so it gets less air.
Papa Bob
1* DW "Granny"
1* 2008 Brookside by Sunnybrook 32'
1* 2002 F250 Super Duty 7.3L PSD
Husky 16K hitch, Tekonsha P3,
Firestone Ride Rite Air Springs, Trailair Equa-Flex, Champion C46540
"A bad day camping is better than a good day at work!"
|
itsabouttime
Midland, TX
Senior Member
Joined: 09/18/2005
View Profile
Offline
|
I'm not a fan of restricting air flow but it works. Too much restriction might cause the furnace to overheat or short cycle from limit switches. If you don't mind a little work, you might add another duct from the furnace to the bedroom. Most of the furnaces I've seen had at least two unused ports for adding ducts. The hard part would be routing the new duct under the floor but sometimes you can get lucky. I have too much heat in my bedroom and will be adding a short duct into the living area to help balance the airflow. It will have to be adjustable because it will be very short and could work too well.
Russ
|
renoman69
Edmonton Alberta
Senior Member
Joined: 02/09/2009
View Profile
Offline
|
I had the same problem so I removed the flexible ducts and replaced them with solid ducts and added dampers to the runs.
2009 Jayco Eagle Superlite RK25.5
2008 Silverado 2500HD Z71 4x4 Duramax/Allison
Reese 15K slider
Honda EU2000I
|
Dandy Dan
Findlay, Ohio
Senior Member
Joined: 03/17/2005
View Profile
Good Sam RV Club
Offline
|
We have too much heat in the bath and bedroom of our 5er as the furnace is right behind the steps going into the bedroom/bath area. I was instructed by the factory that adjustable floor vents could be used with no trouble to the furnace. We have the bath and bedroom just slightly cracked and are trying to force more heat to the rear. Good Luck and Happy Camping.
dan218b@tds.net
Dan and Lori Branson
Anna 1 (the rescue) Sarah (the rescue)
and Beau (waiting at the Rainbow Bridge)
2005 Dodge QuadCab 2500 4x4 Hemi
2009 Open Range 337RLS
RV.Net Ohio Rally Member
|
Hoppers4
Port Orchard, WA
Senior Member
Joined: 12/24/2005
View Profile
Offline
|
A properly balanced HVAC system would have a flow control valve on every leg of the system. An air flow meter would be used on every leg and the flow control valves adjusted to equalize the flow on every leg. RV manufacturers don't have the time or inclination to do proper HVAC balancing.
As Dandy Dan stated you can do your own balancing by installing adjustable vents at every outlet.
08 Winnebago Sightseer 29R
|
|
|
