Hello all, after researching various options for my Austin, TX home I decided on a two stage system to swap out a 25 yr old trane.
(Disclaimer - I am not HVAC expert so apologies for not using proper terms, if something isn't clear I'm happy to clarify, I also don't know whether info here is 100% relevant, so could be over detailed.)
House - 2000 sq ft, 2 story, high ceilings, low pitch roof, it bakes
Old system - trane (4 ton?) kept humidity at 30 - 45% Never more than outside humidity, rarely above 45%.
New system - xl16i, humidity 54 - 56% VERY uncomfortable. We have 38% avg. humidity outside.
The main reason I decided on two stage was recommendations from owners and various manufacturers claims that it lowers humidity and will run at low speed most of time.
It does run a low speed cycle most of time even in 100F Texas - that's good.
However it has turned house into steam bath. That's bad. It does seem to hold temp where we want it, but air isn't as cold as I think it should be. That's just my perception. Air also doesn't smell "fresh".
When I go into closet where unit is installed (upflow) I notice that when unit runs. a strong blast of air comes streaming out of PVC condensation drain (it exits unit and goes into a tee, top side is open, bottom side goes routes down into wall, is it allowed to run into waste vent(?)).
If it does indeed go into waste drain/vent with that strong blast of air, that doesn't make sense to me, I don't think old unit did that. The air coming out of drain didn't seem particularly moist.
Any ideas on what might be wrong? Unit is installed all of 36 Hours. I heard good things about 2 stage for keeping humidity low, so I am stunned. It's never been this high in the house and we will be dealing with serious mold issue soon and can't just turn it off.
I have call into contractor, but I thought I'd throw this one out to see if anyone has encountered this before or has some experience with this puzzler.