A/C Ducting - I'm going in...

[10forty2]

So, I posted about this a while back, and the suggestions were that my A/C unit(s) may have loose seals. After checking all that, I haven't found anything that appeared to be loose. I also checked the partition that is supposed to be in place when installed for ducted vs. direct A/C. All look good and properly installed. And yet, I'm still having very little air flow through the ceiling ducts. And, in fact, just last week, I turned on both units only to get some styrofoam bits blow out of the ducts. When we first bought the rig, the A/Cs would get it cold enough to hang meat with temps outside being in the 90s. Air flow was very good then, which makes me suspect something is partially blocking the styrofoam plenum duct in the ceiling.

Soooo, I've purchased a 30' long borescope that wirelessly connects to an iPad or smartphone and I'm going in this weekend to see what's inside. Hopefully it's not a critter.......

to be continued...... (Oh, and I'll post pics if I get anything good!)

[tropical36]

10forty2 wrote:
So, I posted about this a while back, and the suggestions were that my A/C unit(s) may have loose seals. After checking all that, I haven't found anything that appeared to be loose. I also checked the partition that is supposed to be in place when installed for ducted vs. direct A/C. All look good and properly installed. And yet, I'm still having very little air flow through the ceiling ducts. And, in fact, just last week, I turned on both units only to get some styrofoam bits blow out of the ducts. When we first bought the rig, the A/Cs would get it cold enough to hang meat with temps outside being in the 90s. Air flow was very good then, which makes me suspect something is partially blocking the styrofoam plenum duct in the ceiling.

Soooo, I've purchased a 30' long borescope that wirelessly connects to an iPad or smartphone and I'm going in this weekend to see what's inside. Hopefully it's not a critter.......

to be continued...... (Oh, and I'll post pics if I get anything good!)

There's also the possibility of holes in the duct work, allowing the air to escape into the roof cavity. Just a thought.
When we got our coach after 9yrs, they worked OK, but I still spent hours cleaning the evaporator from inside the coach. Not much room to work and used a long handled brush and a shop vac.
As said, keep us posted.

[ScottG]

I'm looking forward to what you find as well.
On our last RV, the ducts weren't leaking but the were partially smashed.

[doxiemom11]

Will look forward to viewing your pics. Would like to see what it looks like up in the ceilings. Hope you don't find any critter.

[Jeffe]

That sounds like a perfect plan.
It would be hard to fix a problem when you don't know what the problem is.

Can't wait for your feedback!