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Outdoor Temp 91°
Return Temp 70°
Supply Temp 50°
Delta T 20°

Is a 20° difference between the return plenum and supply plenum acceptable with a 91° outdoor temperature?
 

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Yea

Yea man looking good, nice spread. almost said something dirty there regarding spread.
I'll take 20 all day long.
 

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Funny, I was going to post a similar question. On my HP, the numbers show: Return 79, supply 62, but the od was only 80. Doesn't seem to me that the numbers are all that great. What do you think?
 

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16-18 degF is acceptable. You got 17. The numbers are NOT all of the equation and can be misleading. A dirty evap coil can cause low Delta T etc etc. You still need to get the freon level checked annually, plus amperage draw etc etc to know for sure.
 

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Turned the a/c on for the first time this season. Was 93 in Philly area (design 90).

Checked the delta; it was 23.5. Unit is set up at 360 CFM/Ton.

V
 

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Me too

Turned the a/c on for the first time this season. Was 93 in Philly area (design 90).

Checked the delta; it was 23.5. Unit is set up at 360 CFM/Ton.

V
I am a hoagie and cheese steak eater to and my system is running similar to yours. I'm running 400 a ton.
 

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Hoagie

Who do you prefer, Pat's or Geno's? Jim's, maybe?

BTW, do you know the origin of 'hoagie'?

V
I am not from the city I live outside just Northeast a couple miles.

Yes in regards to the HOAGIE it started at hog island, ship builders would take sandwiches to work and it started from Hog island ship builders who named it a hoagie.

No Pats, Geno's or Jim's but I would like to try one. I know where they are.
 

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I am not from the city I live outside just Northeast a couple miles.
I was born and raised in Philly, now live across the big river a few miles

Yes in regards to the HOAGIE it started at hog island, ship builders would take sandwiches to work and it started from Hog island ship builders who named it a hoagie.
A little history: In the 'olden' days, they were originally called 'hoggies' for hog island, but it evolved to 'hoagies'. Also, back in the late '40s, the family would take a ride to Pat's for a steak sandwich. There wasn't a piece of cheese to be found anywhere. It was added much later (mid-'50s).

No Pats, Geno's or Jim's but I would like to try one. I know where they are.
Try Geno's.

V
 
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