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Thank you. Thats exactly what i was looking for.

Can anyone explain to me the wiring on these zone valves. I see it has numbers 1-6 and would like to know
how to trouleshoot them for the future calls that i might have. Thank you.

I was on a call where the relief valve had popped recently. The customer had the old style expansion tank. I drained the tank and fired up the unit. It ran for 5 minutes and the pressure only...

Is there any way to tell if a water feeder is stuck open allowing water to fill the boiler? I had a call today where the boiler relief valve had blown. When i fired up boiler burners ignited, extrol...

I install furnaces and sometimes a chimney liner is part of it. Not all 80% furnaces will get a chimney liner. I dont know is it just for outside walls? What about if you take out a 80 and put in a...

what is the general rule with when to install a chimney liner

I sent in the criteria to join the pro forum tech. How long does it take to get a response? Also what is the 15 questions thing all about? Thank You

sorry new to site didnt realize, i do what you said

what does that mean

I should just put my temp probe on before and after the metering device?
If there is a 3 degree difference, does that mean i have to replace it and can i just go with a txv after as along as i stay...

I'm working on a bryant air conditioner. I went on a call and the compressor was shutting off on low pressure. I put the guages on it was 20psi on the low side. I went inside to check air flow and...

I am new in the field and wanted to know how to troubleshoot, test and verify operation of trane, carrier and york rooftop units? Also is there a support number for these units? Thank you for any...

I want to purchase a 80% upflow furnace with a coil already in there that which will need 125,000 btu's. Also a condensing unit that can handle the load. Can anyone steer me in the right direction?

Has anyone ever come across a digital t-stat that said on it check filter? Also when in the field are there numbers for troubleshooting for all kinds of different situations?

Can anyone tell me when checking a fuse on a trane rooftop 460V, do you have to take them out to check or can you just shut off the break and check? Also when checking these fuses, i know i will be...

Can anyone tell me where i can get some solid spiral duct about 2 feet in dia. and and reducer to 1 ft.? Also 2 vents but the duct wont receive warm or cool air. It wont be part of the system.

I was wondering if anyone can tell me where i can get some knowledge on these units. I have to check the econonmizers and dont know how. Any information on the units would be greatly appreciated.

Can anyone tell me the basic operation of chilled water systems, including the pump and how it cools and heats the space?

How can you tell if your bearings are bad on roof top units?

I was wondering what would cause the evaporator coil to ice up. Is there some tests that would help me determine what the problem might be?

How do you check for static pressure in vents?

I was wondering why the supply vents weren't blowing enough air up? The air was cool but the t-stat was not being satisfied. There was only on return upstairs that had 3 bedrooms, a dining...

I was in a house with 3 bedrooms, a dining room and a kitchen. There was only was return in the dining room. On the first floor was one big return, but thats it for the house. Shouldn't there be...

I'm new in the field and i was wondering if anyone can tell me the proper method for charging r-22? I was showed a couple different ways and was wanting to know the proper way.

Why does self contained and non self contained refrigeration systems defrost for 30 or 40 minutes?