Community Forums

mark6437 · 06-29-2022, 12:00 PM

I cannot find alot on line about this. We used to have a class C now we have a 5th Wheel. Columbus C-Series 382FBC. They come with two Coleman Mach units, 15,000 BTU each. On our class C we had the usual (I don't know what to call it) square AC thing in the ceiling. The one that has the air filter and the switch you can use for the air "waterfall". This 5th wheel only has ducts and 4 rectangle air filters. That is it. I will try to provide a picture.

I am just looking for information about this type of system in general. Have any of ya'll seen this before??

Thx!
Mark
Chappell Hill Texas

**Lt Dan** · 06-29-2022, 12:12 PM

That's a fully ducted A/C system with intake and output vents. That's the only type of A/C system Tiffin installs. It is much quieter than having the drop down intake panel in the ceiling.

mark6437 · 06-29-2022, 12:21 PM

Quote:

Originally Posted by Lt Dan

That's a fully ducted A/C system with intake and output vents. That's the only type of A/C system Tiffin installs. It is much quieter than having the drop down intake panel in the ceiling.

So how hard is it to replace one of the AC's on the roof with this type of system?

dizcom · 06-29-2022, 12:25 PM

Quote:

Originally Posted by mark6437

So how hard is it to replace one of the AC's on the roof with this type of system?

No harder than the other type. They just lift off, exactly the same way.

oscarvan · 06-29-2022, 01:09 PM

Instead of straight down out the hole the cold air is sent into a duct that runs through the ceiling. The rooftop unit is the same.

mark6437 · 06-29-2022, 03:14 PM

Quote:

Originally Posted by oscarvan

Instead of straight down out the hole the cold air is sent into a duct that runs through the ceiling. The rooftop unit is the same.

Ok that makes sense. Thx for the replies!

jimcumminsw · 06-30-2022, 08:50 AM

Quote:

Originally Posted by oscarvan

Instead of straight down out the hole the cold air is sent into a duct that runs through the ceiling. The rooftop unit is the same.

NO, they are not. There are ducted air handlers (roof top A/C units) and not ducted air handlers. See attached blog. https://rvshare.com/blog/rv-ducted-air-conditioner/

This was one of the features that sold us on the Cedar Creek with the ducted A/C system.

One of the features with this system is you can operate the A/C fan on any speed you like, and it is relatively quiet. When we are watching TV at night, I will run the front A/C fan on low with the rear A/C unit on auto. The TV can be at normal volume level for hearing, as compared to our old Cougar with the non-ducted A/C.

When we go to bed the front unit is shut off and the rear unit fan is run continuously either on low or med speed. This will move air around the unit and is quiet when we sleep plus the front bedroom is comfortable for sleeping. We could not do this on a non-ducted A/C unit.

mark6437 · 07-01-2022, 08:16 AM

Quote:

Originally Posted by jimcumminsw

NO, they are not. There are ducted air handlers (roof top A/C units) and not ducted air handlers. See attached blog. https://rvshare.com/blog/rv-ducted-air-conditioner/

This was one of the features that sold us on the Cedar Creek with the ducted A/C system.

One of the features with this system is you can operate the A/C fan on any speed you like, and it is relatively quiet. When we are watching TV at night, I will run the front A/C fan on low with the rear A/C unit on auto. The TV can be at normal volume level for hearing, as compared to our old Cougar with the non-ducted A/C.

When we go to bed the front unit is shut off and the rear unit fan is run continuously either on low or med speed. This will move air around the unit and is quiet when we sleep plus the front bedroom is comfortable for sleeping. We could not do this on a non-ducted A/C unit.

Great info!! Thank you!