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Ok - I have another Goodman (GMPN100-4 Rev A) that I am working on that I have some questions about.

I have come across a few condensing Goodman's this season that have what I see as significant...

You and I both! I have had to spend much time designing my own because what I have found doesn't look like it was designed in this decade.

I use the app ServicePal on my iPad. It has a native...

I have installed over 10 of these. The Smart version allows for humidity control, remote sensors, and has dry contract inputs (tying to wet switch, other accessories). The SI is the basic one. ...

What IWC negative pressure reading would we be shooting for? Thanks

No, he is drywalling sealing plus no recessed lighting.

Customer's wife's requirements. She doesn't want to smell it anywhere in the house. Customer requested I model the HVAC design after a room he found here: http://www.ryandeyer.com/cigar-room/.
...

Use the Ecobee SI. Have installed about 10. Wifi built in. Super easy and great price.

I had it for awhile. Easy to use. A little slow even on wifi.

Needs some work on the interface but I have read reviews on other load calc apps and it look like there isn't anything better out...

I am in the process of designing a cigar room ventilation system and the only info i have is for commercial stuff. This is only a 11x13x8 room in a basement. Here are a few questions:

1) what is...

Back to your original question - never add a condenser (ac or hp) to an unmatched coil (evap or fan coil). This system is supposed to serve someone well for 15-20 years, why would you want something...

Special tester for EC motors you can get for about $ (I have used mine a handful of times)- see here < A bit more info then should be in an open forum>
Yes, 99% of the time its the module - sounds...

Gas valve replaced....works perfect!

I always enjoyed the 3 hr lunch break while we waited for the pump to get r done.

my back hurts just looking at that job

I have always been happy with my fieldpiece LT17A - microamps, temp, min/max hold, magnet holder, amp clamp - just not RMS. Good price too, amazon has them for $125.

Just got this head lamp last week - I knew it was for me when I hit the "test" button while looking directly at it and was blinded for an hour. So blind I didnt read that it was $40. Oh well, its...

Looking for the pro's advice on the best way to measure CFM on a forced air furnace? Other than ESP with the manufacturers fan chart...

Best method? Most accurate tool?

I would really like to...

Thanks for the replys, I will pick up a valve in the AM

@ Ductfisher - 8.8 IWC inlet, nat gas 24V across coil.

Yes, definitely something fishy. I must have measured it started the unit 10 times and measured voltage to make sure my readings were correct. There are 3 terminals on the valve, MV, PV (factory...

Issue with Janitrol furnace --

Goes through normal sequence on call for heat - inducer on, pressure switch closes, HSI glows, then gas valve doesnt open. Interesting that the valve has 15-16V...

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