"410-A PRESSURES " , posted Thu 16 Oct 21:57

just finished 410a installation, where can I find a presure chart which dictates relative humidity and ambient temp, to high and low pressures and vent temps? Want to charge properly! Thanks !!!!!! ... read more

TIMPAT777

"Carrier 58MXA-100 F120 Series 130 " , posted Thu 16 Oct 20:09

Does anyone know the part number for the pressure switch on this model? ... read more

JDM

"Honney Well rth7000 series " , posted Thu 16 Oct 16:50:

Hi,I recently change my old mercury thermostat for a RTH7500. I've Electric Heating System with Fan. I Set it up to 170=4 (Electric heat w fan) 180=1 Electric (thermostat control fan).read more

hvuser

"Heil vs. Goodman " , posted Thu 16 Oct 16:05

I'm considering two bids for replacing my furnace and AC unit. Both came in at 4300, give or take $10. Assuming I have a good amount of confidence in both installers, which is the better system for th ... read more

Avery06

"Odd issue " , posted Thu 16 Oct 15:34

We have a Rheem forced air gas furnace. Model plate says RCDA-07EC-ER, but I can not find any reference for it online or at Rheems website. A few days back, went to get it ready for the upcoming wint ... read more

GAD

"Lennox lighting problems " , posted Thu 16 Oct 14:35:

Have a Lennox G43UF gas furnace that doesn't light?? I'm pretty much below novice level when it comes to furnace repair but here is what I do know. Tstat calls for heat and the unit begins the proce ... read more

TedFred

"air flow " , posted Thu 16 Oct 14:01

I have forced air lp unit in new home my problem is that the house is 65 ft long and the furnace is located at one end and the two bedrooms at the other end of the house get quite cold if you keep the ... read more

Turboman

"Need Wiring Diagram for Comfortmaker Gas Furn " , posted Thu 16 Oct 13:28

I need a wiring diagram for a Comfortmaker/Snyder General gas furnace that was manufactured 9/88. The Model # is GUF075A012AN.Specifically, I need to know where the blue wire from the gas valv ... read more

randym1911

"expansion tank " , posted Thu 16 Oct 11:31

I have a hot water heating system with an expansion tank that is going to need replacement real soon.The tank is 12" in diameter and 5' long.The old tank doesn't have an air fitting, so i don't think ... read more

solomio

"Day & Night 542EP0036 " , posted Thu 16 Oct 10:33

I have a co-worker who would dearly love to find a schematic for this unit -- is there anywhere on the web it's available? He's using damp paper towels to try to open up and clean one that he found i ... read more

hvacmam

"Seer ratings " , posted Thu 16 Oct 06:36

Hello guys... got a question for you about seer ratings. I'll admit up front that this question comes after the horse is out of the barn. I just recently replaced 2 heat pump systems in my home and ... read more

RPFINGSTEN

"Payne furnace will not start. " , posted Thu 16 Oct 00:26

Hi,When I turn the thermostat on, I see a LED light come on some time then a small fan inside a wire case starts to run, but nothing else seems to happen. I remember when the unit used to work I c ... read more

macoronas

"Goodman GUPS100-4 BLOWER PROBLEM " , posted Wed 15 Oct 21:55

I had water in the basement. It reached the blower control board and made the furnace run. I killed the power got all the water out, blew out the furnace,and replaced control board. Now when i turn th ... read more

howman1

"HvacrTalk.com Forum " , posted Wed 15 Oct 20:57

HvacrTalk.com Welcomes New Hvacr Members in the Hvacr Trade...A Fun Forum and a Great Directory & Resource site, For Contractor's, Tech's, Engineers, Consumers, Hvac Job seekers and posters, onlin ... read more

Hvac-pro

"day&night furnace " , posted Wed 15 Oct 19:05

day&night furnace model# 376baw036075. Our heater will not stay on. Try to turn heater on: small fan comes on; gas ignites, gas shuts off, big fan turns on and heater attempts to restart (all of this ... read more

mrskamm

"Armstrong Ultra SX 80 wont light " , posted Wed 15 Oct 15:14

My Armstrong Ultra SX 80 wont light, the pilot lights from the spark modual but it jusy lets the pilot burn and the burners wont come on,, it just clicks,,,,,Help!!!!10/15/08 ... read more

Briancurl

"Carrier Tech 2000 SS Won't Stay On " , posted Wed 15 Oct 14:49

All,Just noticed this issue today as today was the first time for me to move my Thermostat from Off to Heat. It has been in the Off position for about 3 weeks...previously it was on Cool for t ... read more

prenger745

"too much power? " , posted Wed 15 Oct 12:52

I installed a 92% Frigidaire high efficiency furnace for a friend. It keeps shutting down, i believe, because of insufficient duct sizes or it's just too strong (100,000 BTU's output for 2100 sq' old ... read more

chris henley

"Furnace Fan " , posted Wed 15 Oct 12:36:

I have a tempstar furnace. The fan never turns off. What could be the problem? And if its the fan limit switch is that in a circuit board or is it just a switch that can be replaced? ... read more

dwanna4

"It tries!! " , posted Wed 15 Oct 09:55

I have a Model Ruud 90 plus. The ignitor comes on and it lights the burner but the burner only stays on for 3 seconds then it shuts off. Is there a flame sensor that is bad or what is going on here? ... read more

squidman72

"Lennox HP20-261 - Couple of issues " , posted Wed 15 Oct 01:59

Hello all, my first post so go easy.I currently have an old Lennox HP20-261 2 stage heatpump system. I have a few questions if anyone has the time to answer.First, there is a problem w ... read more

roadrun777

"Fan runs continuously " , posted Tue 14 Oct 21:34

The fan on my Lennox furnace runs continuously even long after burner has shut off,just wondering if its something i can fix myself or if its out of my league. ... read more

diggler

"Trane XE90 Blower Motor not Running " , posted Tue 14 Oct 21:06

Hey Guys/Gals,My blower motor (the one that circulates the hot/cold air through the house) is not turning on with my Trane XE90.The Furnace actually comes on and heats, but the blower does ... read more

FrankyC

"fan continues to run after burner shutdown " , posted Tue 14 Oct 20:53

Lennox G20 forced air gas fired system about 10 yrs old. Occasionally, after the burner shuts down the fan will continue to run forever. Only by cutting power at the furnace will it stop. It should ... read more

aaronml

"Switching Thermostats HELP!! " , posted Tue 14 Oct 19:55

i'm switching from a Janitrol HPT18-60 to a Honeywell RTH230B. The I'm running all Electric. The old therm has these connectionsBlack - NothingGreen - GWhite - W2Red -RedBlue - Cread more

fick15

"furnace won't turn on for heat " , posted Tue 14 Oct 16:20

I have an old tappan gas fired forced hot air furnace. I am able to run my a/c and the fan. But when i call for heat it wont turn on. The pilot is lit ( not electronic pilot ). I had the transformer c ... read more

Norm Jr

"Deciding between 2 companies " , posted Tue 14 Oct 16:06

I need a new a/c system, and I am considering both of these companies: www.airforcem.com and read more

D Blank

"trying to hook up new t-stat " , posted Tue 14 Oct 12:40:

I am tryin to hook up a totaline P374-1800 in an older mobile home. the old t-stat only had a red and white wire going to it.The new one has spots for: W1/O/B, Y1, G, MISC2, R, CThere's only t ... read more

chey057

"furnace prob " , posted Tue 14 Oct 11:42

My furnace exhaust blower starts, the ignigter starts to glow, then the fire kicks in for about 5 secs, then the fire shuts down, and the igniter starts agian. This goes on a few times an then it con ... read more

hothouse

"Ventless heater " , posted Mon 13 Oct 22:05

I have a 30,0000 btu ventless heater (lp) in a 20x30x9 house centrally located, but when it runs it stinks in the house any one else have this promblem ... read more

wes377

"Damaged TEV? " , posted Mon 13 Oct 19:55

I proceeded to braze connections between line set and airhandler (evaporator coil) and then learned while reading instructions (belatedly) that TEV sensing bulb must be detached from street elbow bef ... read more

smharrison

"Help with supply power " , posted Mon 13 Oct 17:54

Hi, I'm new to this board. I'm replacing my old gas furnace with a new electric 5 ton updraft unit. My question is what size wire should I use from the service panel to my new electric furnace? It ... read more

stormtrooper784

"rheem criterion II heater " , posted Mon 13 Oct 15:54

I need help understan ding why the heat will not stay on. The heater will light up but as soon as the glow rod shuts off the gas shuts off. Please Help ... read more

day

"how to get furance fan to run for circulation " , posted Mon 13 Oct 13:09

i have a bryant gas furnace, model 395cav upflow. i have recently installed a little wood burning stove upstairs in my home. what i would like to do is have the furnace fan to run, without producing ... read more

robzilla01

"21D64-2 nitride igniter kit " , posted Sun 12 Oct 19:52

I used 1 of these last year on a rheem still working, no callback.I am thinking of reducing my on truck inventory this year,carrying a few of these, acouple of Lennox and Trane 80volt ignitors and ... read more

fluepipe3

"Holly Wall Heater " , posted Sun 12 Oct 18:01

Hello, I have a Holly Narrowall Model 255- D wall heater 1961 vintage with a Unitrol 110 - R control unit that also has " Hydraul LC 25670 that I need replacement firebox gaskets for. I would also lik ... read more

MLB

"no blower in heat mode " , posted Sun 12 Oct 16:42

armstrong unit, ac works fine,furnace lights, and t stat controls on off ok but blower does not come on except manual mode ... read more

azygous

"40 year old crawl space propane furnace ??s " , posted Sun 12 Oct 16:35:

Hi forum. new poster, looking for advice from the pros.I have a log cabin on a lakefront that was built in the mid 1960s. Iam not the original owner. The cabin has a two foot tall crawl space, acc ... read more

alkazoo

"Help figuring out my system " , posted Sun 12 Oct 15:52

I have a Trane XR-13 Heat Pump(HP) outside with aCarrier FC4BNF036 Air Handler(AH) inside. I amtrying to figure the system out because I triedputting in a new programmable thermostat.< ... read more

raptrflite