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There are 34997 individual articles here that are part of 2893 discussions
Please see below the list of the most recent and the best rated articles in HVAC Discussions
The most recent discussions
A newbie question
May 17, 2012, 12:56 am
Hi, Once in a while AC unit needs refrigerant top up at the beginning of season during annual check up. Are they consumed or if there is no leak, how come it needs top up? Where does it go? Read more »
heat pump wont run
May 16, 2012, 1:44 am
my heat pump is not working no compressor no fan. My heat works but i tried to bypass the thermostat as a test i can jumper the red wire to the green fan runs fine but when i add the white wire fan s... Read more »
Any thermostat that keeps running for a while after temperature is lowered?...
May 10, 2012, 5:17 pm
If I leave the thermostat Fan to Auto, once the A/C brings down the temperature down to the set temperature, the fan immediately stops. Is there any type of thermostat that can keep the fan running f... Read more »
RSES SAM manuals
May 10, 2012, 5:57 am
RSES SAMS Manuals for sale or best offer! located North NJ. Ph: 201-944-6294 or Email t.seput@verizon.net Read more »
Heat Pump Fan Motor Install Question
[ 2 3 ]May 9, 2012, 4:40 pm
I am a newbe, an aspiring DIY'er, getting ready to replace my fan motor for the first time (exterior) Carrier Split System Heat Pump: Model 38BYC). I think I figured out the answers to most of my qu... Read more »
hvac
May 9, 2012, 2:02 pm
My goodman furnace/ air has been having unusual delays, on days where I switch between heat and air. The thermostat seems ok, at least I can hear the relay switch, sometime waiting a couple minutes. ... Read more »
Any Rheem/Ruud experts here?
May 7, 2012, 1:40 pm
My Rheem furnace (RGFD) control board has a switch to 'enable' HIGH SEER operation (used for 16+ SEER units). Does this switch (ON) increase airflow above the set (DIP switches) amount? If not, wha... Read more »
Saw a commercial Icebank Air-conditioning System in Branson, MO last week
May 5, 2012, 6:41 pm
125 ton Trane air cooled chiller sitting on a slab circulating glycol thru 8 large storage tanks next to the chiller . The chilled water was pumped under the parking lot to a couple of very large Tr... Read more »
Type B (B-vent) chimneys and HVAC contractors
May 3, 2012, 3:26 pm
I have an ongoing chimney issue. My existing 10-foot above-the-roof-line masonry chimney has to come down because it is in bad shape. I would like to take it down to near the roof line (to maybe 1 ... Read more »
Do HVAC contractors do "just" chimney lining/B-vent work
May 3, 2012, 12:10 pm
I have an ongoing chimney issue. My existing 10-foot above-the-roof-line masonry chimney has to come down because it is in bad shape. I would like to take it down to near the roof line (to maybe ... Read more »
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The best rated discussions
Pellet stoves?
Anybody know if there is a forum for discussing pellet stoves? I just bought a Harman Accentra and wanted to compare notes. It's been a few years since I've posted here. Last was asking about our ... Read more »
Biocide 4-stage air purification system
I will appreciate receiving opinions from anybody experienced with the Biocide 4-Stage air purification system. Thanks. Ed www.biocidechamber.com Read more »
How to adjust oil furnace electrodes and flame?
[ 2 3 4 5 ]
Hi folks, I have an old cast iron boiler that used to burn coal back in the 1940's, and had been converted over to heating oil. It uses a pretty standard looking 3450 motor that's about 30 years ... Read more »
Carrier 48GS inducer assembly?
I have a 48GS-036090311 gas pack that we purchased at the end of 2004. 6 years old, 1 year past the Carrier warranty. Tuesday (Oct 26th, 2010) I had a preventative maintenance inspection performed ... Read more »
Best replacement for R12
There are a few older vehicles on the road running with R12. R134 is'nt a great replacement, but are there any superior to R401a (dupont MP39) for performance and changeover ease? I assume standard... Read more »
Easy, Safe & Permanent Swamp Cooler Pan Repair
I have seen several threads on this informative hub regarding Swamp Cooler Pan Repair - Issue: As the swamp cooler ages, the pan that holds the water may deteriorate, become rusty and develop small h... Read more »
Thermostat Transformer
My White Rogers programmable thermostat died yesterday. My wife came home and found the house very cold so she turned the system off. When I looked at the thermostat I found the LCD panel was backli... Read more »
Replace Leaking Evaporator Coil or Install new more efficient system?
Rundown: 7 year old house. We plan to live in it for 5+ years Rheem AC Unit - working fine. 10 SEER Rheem Furnace - working fine. Kind of loud. Rheem Coil(warranty is expired I think, its past 5 year... Read more »
Heat Pump COP with solar-warmed inlet
The COP of a geothermal heat pump is given for inlet water temperatures in the range of 30-50F as being from near 1.5 to about 3.0. Does anyone have any data on what the COP would be if the inlet te... Read more »
Carrier Comfort Zone thermostat
My Carrier Comfort Zone 4 zone thermostat has an option area that is specific to installation/service. I cannot find any model number but the circuit board does contain the letters CZCT rev. 1.3 on i... Read more »
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