Best Ways to Redirect Furnace Heat in Micro Minnie 2100BH for Even Warmth

[RvNoob34]

I’ve used my MM 2100BH a couple times now and it’s been in the 20°F range. I have the furnace going and it’s working fine except the placement and directional adjustment is terrible. The one vent is directly under the fridge. I quickly noticed, no matter which way I spin the vent, it makes the bunk area very warm and the front section where the main bed is, is chillier. One thing tha helped was I used a spare blanket to hang over the bunks. This stopped the warm air from pumping into the wasted space but I feel like there could be a better way I haven’t thought of.

 

[klook]

you may be able to run another flex vent line depending on floor plan.

 

[Morich]

More info on how and what you need to change may help? Are you looking for a change that works while you sleep and that might make temporary items useful?
One of those might be as simple as getting a flexible drier vent hose to lead the heat from that one vent to come out in a different place where the heat would work better?
One that I found when doing guy trips took a bit of DIY thought but seemed to help. We had to build a way to lay the flex tube in the floor and connect it to the existing vent in a quick and easy way.
We fashioned a circle of metal to fit around the vent and magnets on the flex to hold it to the metal. We just stuck it on the vent and that let the warm air go away from the hot guy and get to the cold one! Anybody who got up first had to deal with the tube in the floor or move it! Just remember to remove any liquid that might freeze in the cutoff space!
But our best move was always to cut the amount of space we needed to heat! Something multi-layered to fit tight between the unheated and heated space is a first move.
Windows and roof vents are automatic leakers, so pillows of some sort that can be stuffed in can help a lot. If you are connected to power, look at very small fans and temporary ducts to move air from high back to where you need it can be a big help. Small computer fans can moveair without creating a cold breeze!
Also something as simple as a good thick carpet pad on the floor can cut that heat loss as the floor is so often open to outside air under the RV!

I really miss the nice country up North but the cold? Not too much!

 

[rattlesnake-WO]

Your post got me thinking about this problem in my own 2100BH. I found this for $21 on Ebay by searching for "5 inch round black stainless steel vent cover" and I'm going to give it a try. It looks like it may protrude a little so I want to rig it up so it is removable for the Summer.

I have found that flipping the bunk cushions up on end block off the bunks perfectly.

Another trick I have learned to help circulate the heat is if I am on shore power I run the A/C blower (just the blower--not the compressor) while the furnace is running. If you have a ducted Dometic A/C like in my 2021 2100BH, set the fan speed to "low" on the thermostat and the A/C blower will run along with the furnace. The A/C blower will not run if the fan speed is set to "auto" while the furnace is running. (The furnace blower will always run at the same speed regardless of speed setting)
On a cozy note if we set the current vent to blow at the 10 and 4 o'clock positions we have a toasty bathroom floor if we have to go in the middle of the night!

 

[RvNoob34]

Your post got me thinking about this problem in my own 2100BH. I found this for $21 on Ebay by searching for "5 inch round black stainless steel vent cover" and I'm going to give it a try. It looks like it may protrude a little so I want to rig it up so it is removable for the Summer.
View attachment 2421982
I have found that flipping the bunk cushions up on end block off the bunks perfectly.

Another trick I have learned to help circulate the heat is if I am on shore power I run the A/C blower (just the blower--not the compressor) while the furnace is running. If you have a ducted Dometic A/C like in my 2021 2100BH, set the fan speed to "low" on the thermostat and the A/C blower will run along with the furnace. The A/C blower will not run if the fan speed is set to "auto" while the furnace is running. (The furnace blower will always run at the same speed regardless of speed setting)
On a cozy note if we set the current vent to blow at the 10 and 4 o'clock positions we have a toasty bathroom floor if we have to go in the middle of the night!

I’m dry camping so I aimed the vent to the 2 and 8 o’clock position so the air wouldn’t go into the bathroom lol.

Great idea on the bunk cushions. Then I’d only have to block the storage under the low bunk. That’s easier to do.

The placement of the thermostat isn’t ideal either. It should’ve been placed farther from the vent for a more even heating.

 

[05xc7]

First off yes older thread but I see no resolution.
Im Fairly sure the thermostat actuall reads cut in/out temp from the over head A/C housing (where the temp probe is) I could be wrong on this and it would depend on the thermostat/ac unit/heater installed.

For the furnace I ran a flexible duct under the counter, behinde the stove and exited it at the door way by the floor. I blocked some of the flow coming from the vent directed at the bunks, left the bathroom vent as is and removed the underbelly vent hose and direct it out under the fridge/furnace area at the floor.
It took a bit of trial and error but its much more even heat in the camper now

Now I still need to possibly duct some A/C air into the bunks, that is just a bit more complicated.....

 

[klook]

If the thermostat is reading in the overhead, it is probably a GE unit. I don't know what they are thinking but the ones I have seen had a heat pump so they worked off the AC unit. I don't see an easy solution to the AC other then point a fan into the bunk area.

 

[Morich]

One of the big things about RV is that we do often have to make some compromises to get closer to whatwe want and itmay nver be perfect! Heat and air is one of those where we discovered we were never going to be fully happy in all weather all the time!
It won't work as well for cooling but when we wanted to get better heat all around we found going to sites where we had electrical hookups paid off for what we wanted.
Paying a bit for a site allowed us to save on propane with increased comfort that we called a win!
We have acquired a number of small digital thermostats over the years from remodels and other uses, like greenhouses, and they do a much better job of controlling small electric heaters. We do not like noise and we don't want the small heaters close to us when we are sleeping. Adding a good thermostat where we sleep to control a heater placed away from us, lets us control the temp where we are but not hear the heater nearly as much!
When in really cold country, we find the cost of the campground can easily be excused for the lack of propane use as well as increased comfort.
We are well past the idea that we are saving money when we camp! If we were to pay five dollars a gallon for gas to get there, we definitely want to sleep well enough to enjoy the trip!