Latest threads in HVAC Discussionsshow only best voted threads

Subject Author Posted Replies
 
Any comments about DC inverter technology?
I've been reading about this technology being used in heat pumps now. The sound levels and energy savings are impressive. BTW, I've a bit of experience with this in automated welding where it...
11
11
 
Tempstar Heat Pumps secondary heat isn't coming on during Defrost cycle
I am wondering if my heat pump's second-stage heat is not turning on during its defrost cycle. Tempstar XL 5300 Heat Pump, installed new 5-07. Installation instructions 331823-701 (Oct 2005) Trane...
1
1
 
Just in- The 2008 STORMIN' MORMON Installation Awards
http://www.mysporttrac.com/~library/10452/code%20pictures.pdf
 
Yo King & Jean
"Would you care to test me on basic refrigeration: latent heat, sensible heat, wet-bulb temps, dry-bulb temps, sub cooling, superheat, evaporators, condensers, scroll compressors, reversing valves,...
 
What is this water...?
Howdy, We heat one of our buildings with a 4 ton water-to-air heat pump, and it has worked very well for the past seven years. In the winter, we pipe steam into the duct system to humidify the...
4
4
 
To TEV or not to TEV?
What are your thoughts on adding TEV's to a 2 Ton, A410 heat pump? If my current situation requires a complete pump out, purge and re-install of refrigerant, would it be advantageous to install...
25
25
 
Pressure And Bld'g. Ht. Question
Hello, Let's say that the pressure reducer for an incoming water line to a residential house is set at 50 psi, and that it works "perfectly" in that it will always keep the downstream p at the...
2
2
 
Yo: THE King
How's your head today? If you're ever gonna get out of the truck, you'll have to learn how to deal with this shiite. ;) I would like your imput on the following. I'm trying to figure...
17
17
 
Lennox HPA16 heat pump compressor failure
I have 2.5 year old Lennox HPA16-060 heat pump. Stopped working. Tech says bad circuit board. Replaces board (now it runs) and says some solenoid is shorted to ground so I only have first stage...
3
3
 
Garage Humidity
I just bought a house with a uninsulated detached garage with no dry wall (wood frame) my guess is 50 years old. My concern is not about heating (would not hurt)or cooing, but keeping the humidity...
5
5
 
Yo Jeanius
Lets plug your numbers into this and tell me what you get. CFM = volts x amps x 3.412 / 1.08 x temperature rise = 237 x 20 x3.412 / 1.08x 19 =16177 / 20.5 788 CFM You need 400 CFM per ton so Id say...
7
7
 
Need your expertise
Can you guys tell me if the data in the section: GSZ130241A* / AR*F182416** on page 18 of strange for R410? Look at the Hi/Lo pressures for outdoor ambient. 2 ton - 212/61 @ 40 deg ? Compare to 1 1/2...
15
15
 
Very Fast response fuse required...
------------------------------------- I was doing a Certification test for my product which has three 20A fuses (Littlefuse make, 324020P) connected in parallel at the input lines (phase and neutral)....
2
2
 
To trader
Hey trader. Humor me. Give me your gas and electricity costs from your home. Not the total bill but just the costs per unit to input into your calculator. By the way, you should now be understanding...
 
Unemployment
The Dark Lord of the Sith Get various Jobs , REALLY FUNNY. The Dark Lord of the Sith Get various Jobs , REALLY FUNNY.