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Old 04-03-2016, 09:17 AM   #1
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2011 Shamrock 233S - Heater Seems insufficient

Because it's our luck, bring home a new to us 2011 Shamrock and it drops to 28 degrees and starts snowing.

In the process of setting up and arranging storage in the Shamrock, we kicked on the heater. We noticed the only main living area vent was right by the door - seems a very inefficient spot to put the heater vent as I imagine some of the heat is sucked right outside. Th other vent is int he base of the shower,and it has very very low airflow. The large mesh screen in the front of the sink cabinet, which I thought would b the primary heat source has absolutely no air blowing out of it. Upon opening the mesh screen ( really hinge on top and bottom, that confused me ) There is just a flat metal plate with instructions on it, no slats, no louvers, nothing to allow hot air out of the heating system. I did take the end of the furnace off ( funny there are instructions on the inside of the cover as well ) And it blows air like mad out the mesh screen, but I have to assume this is not the normal operating configuration.

We had the heater on for about 40 Minutes and we could still see our breath inside the camper - is this normal? How long does it take to heat that space? I know with the Bunk ends down it is horribly inefficient, but our 12' Box Popup with double kings would get hot enough to drive you out of the thing in 30-40 minutes if you cranked the heater.

Is there a modification most of you do, a way to route the air other than by the doorway? We often find ourselves camping early or late season where the temps drop to the low 40's at night pretty regularly - I would like to not blow through my Propane tanks every other night trying to keep warm.

We are going to pick up a couple of 1500 watt Cube heaters to supplement, but I'm just worried something is wrong with the factor heating system.

Styg
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Old 04-03-2016, 03:32 PM   #2
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Something seems wrong.
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Old 04-03-2016, 03:53 PM   #3
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1500 watt ceramic heaters and 360 forced air 360 Honeywell heaters on sale at Walmart - 5.00 and 7.00 respectively... good time to buy heaters before Spring I guess.

Still need to determine whats causing the gas heater to lack oomph though.

Styg
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Old 04-03-2016, 04:06 PM   #4
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I have the same model and that's where the vents are ... These things have a lot of spots with far worse insulation than your door. But I'm surprised you could still see your breath.


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Old 04-03-2016, 06:34 PM   #5
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Put Reflectix insulation in the zip open bunk ends. You won't believe the difference that makes as far as helping with temp control, especially since you have the 3 open bunks. We had used it in our PUP for years & when we bought the Roo that was one of the first mods we did. We did it on a cold day with a cold breeze blowing. It became obvious the difference it made as we put in each zippered window on each bunk. Really helped to cut the cold breeze blowing. The furnace is probably working properly. Might want to check to make sure the duct going to the bathroom isn' t kinked at the furnace.
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Old 04-03-2016, 07:06 PM   #6
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Do you just cut it to size and zip it up inside the windows?


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Put Reflectix insulation in the zip open bunk ends. You won't believe the difference that makes as far as helping with temp control, especially since you have the 3 open bunks. We had used it in our PUP for years & when we bought the Roo that was one of the first mods we did. We did it on a cold day with a cold breeze blowing. It became obvious the difference it made as we put in each zippered window on each bunk. Really helped to cut the cold breeze blowing. The furnace is probably working properly. Might want to check to make sure the duct going to the bathroom isn' t kinked at the furnace.
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Old 04-03-2016, 08:20 PM   #7
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There was a post maybe 2 months ago about the ikss heating. It basically has the same heat ducts as your 233s. Consensus was more ducts couldn't be added because they would interfere with the slide operation. Anyway, we have an ikss, and we try to use an electric heater as our primary heat source with the furnace as backup. Set the thermostat at 60 and let the electric do its thing. Use their electricity, not my propane. Obviously this process will not work if dry camping.
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Old 04-03-2016, 09:32 PM   #8
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Do you just cut it to size and zip it up inside the windows?


Styg
Do you know about Popup Gizmos?
#1 Hybrid mod with Reflectix in the tent windows a close second.
Essential for temp control in the tent ends.
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Old 04-03-2016, 09:42 PM   #9
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Do you just cut it to size and zip it up inside the windows?


Styg
Yes. Cut to fit. Many tape up the edges but it's not a necessity. A 4' x 25' roll should be more than enough.
Gonna need PUGs and reflectix until it warms up around here....
Welcome to the forum from another Michigander.
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Old 04-03-2016, 10:02 PM   #10
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Yes. Cut to fit. Many tape up the edges but it's not a necessity. A 4' x 25' roll should be more than enough.
Gonna need PUGs and reflectix until it warms up around here....
Welcome to the forum from another Michigander.
I have 3 Queen sized beds was trying to figure if 4'X25' would be enough or not.

By the sounds of it the Reflectix can be beneficial for keeping in the cold for the AC as well?

Thanks

Styg
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