We see cased evaporator coil misalignment quite often. This quick video shows you what to look out for when installing an overlapping cased coil.
Misaligned or lopsided cased coils can negatively affect your airflow. You want your cased coils to shift a bit towards the left, on the same side of the drain pan. Otherwise, up to a third of the cased coil will NOT get airflow. As always, check your system's suction pressure and superheat to determine the health of the low side even further.
Read all the tech tips, take the quizzes, and find our handy calculators at https://www.hvacrschool.com/.
Misaligned or lopsided cased coils can negatively affect your airflow. You want your cased coils to shift a bit towards the left, on the same side of the drain pan. Otherwise, up to a third of the cased coil will NOT get airflow. As always, check your system's suction pressure and superheat to determine the health of the low side even further.
Read all the tech tips, take the quizzes, and find our handy calculators at https://www.hvacrschool.com/.
Well, what's his camera doing hovering in front of my face, i'm brian with the hvac school podcast, and this little video is one that one of my managers Jesse shot. He hasn't quite learned to use the horizontal view on the camera, which I can't blame him. I done a lot of videos this way myself. One thing you'll notice here is that this furnace has flexible flue, it's not dryer vents or anything like that.
It's rated flue assembly, it does look a little weird in Florida. They use a lot of this, but we found this quick case, coil actually installed incorrectly from the very beginning, and so it been that way for years and now we're in replacing the case coil - and this is a common issue that we find a lot on case. Coils with how they're originally installed and Jesse shows how to remedy it enjoy all right people I just want to. Let you guys know that when you see a coil like this, where it's lopsided to the right hand, side of the unit see how you got this edge here.
This is an n shaped, coil, so guns here here and then here so what happens on when you install these you're supposed to actually push them over to the left. That way, the drain pan here is on the left side and you get proper air flow through this end portion. Now, when you have it like this, a whole third of the coil is getting improper airflow. So you really need to make sure it goes over to the left-hand side where the drain pan is hanging over and I work much better.
So here's the bottom side of a coil, as you can see before that whole section, there isn't getting airflow when it's tilted to the right or shifted to the right-hand side. So if you switch it to the left-hand side, you're just blocking airflow off to this portion - and you get plenty of airflow in the center and plenty of airflow through this third of the coil as well all right. So we got the new coil in, as you can see, the right-hand side is nice and flush, and now the overlapping portion is the drain pan. So we have much better air flow, and this is how the they are designed to go in.
I didn't have to add any refrigerant before it was sitting at about 115 suction, with like a sick superheat, now we're sitting at 155 suction with a 15 degree. Superheat 22 degree split systems running good.
I bet there are just as many "do-wap- da-doos " out there as there are installers?!?! So many "Macgivers,so many more opportunities!!
He said that he didn't have to add refrigerant? So he just pumped it down instead of recovering what was in the old unit? Service area Barrhaven??
Excellent, thank you!
I find dozens of these improperly installed "N" coils that Carrier and Rheem manufacture a year in Baltimore MD area. Sad when it was a new install not even 2-3 years old. Many times homeowner has given up on the original HVAC contractor who installed the new HVAC system because the house will not properly cool or dehumidify when the out temps reach over 90+ degrees with a 70% outdoor RH or higher.I have quite a few HVAC conatrctors not happy with me after I go out on these HVAC calls for a 2nd opinion and b explain to homeowner what the issue is and that is was installed incorrectly and homeowners get upset with the original HVAC installing contractor lol.I always match up a new cased Evaporator coil with a new gas furnace install to be the exact same width and I have no problem doing this with the HVAC brands I use that have cased evaporator cabinets in 17.5" "A" cabinets, 21" "B" cabinets, 24.5 " "D" cabinets .
Thanks. Good info !
How can l remove expansion valve and used capaliry tube in chiller with compressor 10 Tr
Ty
Thanks for the heads-up on this, installing a new coil on top of a gas furnace tomorrow and will make sure and shift the coil case to the correct side.
Good tip!!!!👍
nice installation.
good find. great repair Are you in Orleans ?
Ooops, I was just a little dyslexic that day. Thanks for setting me straight.
nice install great podcast bryan always listen to it
Cleanest install I think I've EVER seen!! Kudos Kalos!
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Well done guys!