Mating season

[mechanicalgsxr]

that kinda turns me on a little bit

[JKopp]

If they did what I think they did what keeps the conditioned air from just passing through the older units coil and back into the return for another cycle and the air not even making it to the office space. Let me guess they plated off the coil or maybe they were not that smart.

Call the Fire Department or building official, I don’t think they would allow this kind of additional loading on the roof without engineering it.

[smokin joe]

"My A/Cs aren't working"


"I only see 1 stat, How many are up there?"


"2.................I mean 1.................I think......................I mean...........................wait..................................I mean...................Its up there.........you can't miss it......"

kinda what i was thinking lmao

[ldmth44]

Cheap a** bast**ds!!

[IDHVAC]

who the?? what the?? wow................

[temco]

The old tandem package unit change out trick. Very creative.
I would never thought of such a thing.

[fishindad]

hey guys it's trick out my pkg unit, its 50 seer now. beet that all you engineers that need to work on stuff before you put it on paper then let us figure out how to take it apart and fix it

[carriertechny]

i hope the fans not operating in the bigger unit

[fridgitator]

Just guessing, but supposing the load in the conditioned space was increased beyond the original system's capacity, or it wasn't big enough to begin with. So someone decides that it's cheaper to add a few tons to what's there than replace a working system with the right one. If it works the way it looks like it does, the return on the new machine draws from the return on the old, and the new supply blows back into the old supply. I think it's a safe bet that they didn't change any duct work to allow for increased air volume. My theory is that the evaporator on the old machine would ice up because the altered air flow would reduce the volume of air passing through it, thus leaving the smaller machine to do all the cooling. Does that make sense?

[Hermeticair]

Talk about lazy BASTARDS!

[HVAC2B]

2-stage cooling???????
good find on the twin turbo

[mr43]

I do believe that's a redneck cascade system.

[deaztrailnutz]

yea, prolly the older one died and someone didn't know about roof curbs

They probably spent more time hacking in the heil than if they had used a curb adapter with the proper unit. At least they used a trap.