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Old 04-27-2014, 08:40 AM   #1
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Default Quiet Suburban furnace?????

Could it really be?

Suburban and the RV parts folks are listing a new part number for the classic B sized Suburban furnace.

Old number was NT-16SE for the non ducted version.

New number is NT-16SEQ

The "Q" allegedly stands for QUIET. The description also calls it the new quiet model.

I couldn't find any reviews in a quick search, and was also not able to find a parts list to see what they changed, but most likely the motor and the two blowers on the motor as that is where I found our noise comes from. It will be interesting to see if the parts are available to retrofit, or if you need a new furnace for $500+.

Expensive to upgrade to be sure, but if it really is much quieter, it might be worth it for the sleep you would gain.

Anybody heard anything on this, or have any contacts in the RV repair area that might be able to get a parts list to compare to the old version?
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Old 04-27-2014, 11:55 AM   #2
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Default Re: Quiet Suburban furnace?????

From Lance: I don't know if it's a Suburban. these are used in their TT Four season package.
"A dual stage 15,000 / 22,000 BTu furnace not only keeps you warm in sub-freezing temperatures Lance is the only camper to feature this quiet-running furnace that burns less fuel by automatically selecting how much heat is needed."
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Old 04-27-2014, 02:44 PM   #3
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Default Re: Quiet Suburban furnace?????

We rarely run the furnace overnight. We simply sleep in sleeping bags rated to 20F and that is as cold as we probably will ever go. We fire it up before getting out of bed and wait a few minutes for the B to tolerably heat up. When plugged into shore power we do use a 1500 watt cheap $20 electric cube heater. I actually sleep a lot better in cold weather and enjoy it. But a quieter Suburban I imagine would be very appealing.
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Old 04-27-2014, 03:56 PM   #4
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Default Re: Quiet Suburban furnace?????

We also use an electric heater when we have shore power. The noisy furnace is probably the major reason we seek out shore power, and is much more common than the opposite reason of having air conditioning.
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Old 04-27-2014, 04:23 PM   #5
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Default Re: Quiet Suburban furnace?????

We used our noisy furnace twice on our last trip, once in northern Kentucky and again in Bryce, UT. We found we were able to sleep reasonably well, even with the incumbent noise. I guess our fatigue level was high enough to counter the brief awakening, when it fires up. It may also have to do with our day/night shift career times, where we both regularly worked odd hours, and had to find ways to sleep at odd hours and during noisier times of day, as well.
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Old 04-28-2014, 08:48 PM   #6
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Default Re: Quiet Suburban furnace?????

I just got this reply from Suburban on the new design of the furnaces.

The Q-model furnaces are totally redesigned with a new motor and fan design. Which significantly reduced noise created by the fan in the older version.



From when I tried to quiet ours down, 90% of the noise was from the motor, when it was under load, which is typical of DC motors. If they have gone to a brushless style, they may be very quiet now.

I think I need to get to an RV dealer that has a rig with one in it and have a listen to see how much they have improved.
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Old 04-28-2014, 10:18 PM   #7
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Default Re: Quiet Suburban furnace?????

Did you get an answer to the question about whether the new "quieter" parts are able to be retrofitted to our old jet engine models?
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Old 04-28-2014, 10:24 PM   #8
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Default Re: Quiet Suburban furnace?????

Quote:
Originally Posted by Mike
Did you get an answer to the question about whether the new "quieter" parts are able to be retrofitted to our old jet engine models?
That didn't come up, as I didn't ask on the first try. I am going to answer and ask that, and if there is a parts list available. My guess is that they won't be available, do to the comment about completely redesigned, and liability issues with propane appliances.
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Old 04-28-2014, 10:57 PM   #9
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Default Re: Quiet Suburban furnace?????

I wouldn't be surprised if the footprint is identical in size/dimensions, in the case where some owners of the older models might consider replacing their current units with a new one. Even if the parts aren't interchangeable. I wonder how difficult it would be to replace a furnace? As difficult as a fridge or water heater, I would expect.
Do you think the most noise comes out the front of the furnace, or does it also emanate from under the bed (in our case), from the casing of the unit? We use ours so rarely and I've never actually sat there and tried to see where the most noise originates when it's running. I wonder if wrapping some of that Hushmat or B-Quiet muffling stuff around the casing might help with the noise?
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Old 04-29-2014, 11:36 PM   #10
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Default Re: Quiet Suburban furnace?????

Quote:
Originally Posted by Mike
I wouldn't be surprised if the footprint is identical in size/dimensions, in the case where some owners of the older models might consider replacing their current units with a new one. Even if the parts aren't interchangeable. I wonder how difficult it would be to replace a furnace? As difficult as a fridge or water heater, I would expect.
Do you think the most noise comes out the front of the furnace, or does it also emanate from under the bed (in our case), from the casing of the unit? We use ours so rarely and I've never actually sat there and tried to see where the most noise originates when it's running. I wonder if wrapping some of that Hushmat or B-Quiet muffling stuff around the casing might help with the noise?
I did get an answer about interchangeability, and the new furnace is a direct replacement. The old ones cannot be upgraded per Suburban, although I bet someone will try if the parts can be found, but depending on what changed, that could be dangerous.

Our furnace is in the front armoire behind the driver, and I have had it out at least 6 times trying different quieting methods, all of which didn't really help. I can have ours out in less than 10 minutes and it is not difficult to do. The noise comes out all around and through the front grate. There is wood around the rest of it which probably blocks it there.
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