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Ok, I know the EPA has not registered any chemical for use on flex or ductboard, which is 95% of what our area has. Is there anything you can put in a fogger that helps or works completely?

We...

Thanks, my home system seems to need dehum even with the Infinity 2 stage running in the summer. Our humidity is crazy and I am weary of the floor model dehum. Nice to know it can do the job without...

If you can pull a vacuum down to 150 microns and hold for 10 minutes....it's good.

I would definitely recommend appion vacuum rated valve core removal tools....they allow the vacuum to be pulled...

OK, so is Ultra Aire a good brand? Seems like everything is junk these days....

If I install one with ductwork in the attic, how much heat is it going to produce running the air through this...

These are also the guys that changed it from "GLOBAL WARMING" to "Climate Change".....

OK, the problem is my humidity is not controllable even with my 2 stage Infinity 50/100. At times the humidity goes past 60%-70%. Homeschooling 5 children with three meals a day may have something to...

In order to succeed in HVAC you have to be good at it. If you have zero experience you will have a huge learning curve. If you are already seriously mechanically inclined, then you may have a better...

I see that Mitsubishi lists a conventional air handler on their web site. Anyone have experience with them....3 ton model number is PVFY-P036E00AA. Mitsubishi would have to be better than American...

Just replaced 2 waterfurnace coils, 2 txvs, and a main circuit board...envision split systems. Slow parts delivery, seems like they attempt to avoid actually paying the labor warranty. Coils, coils...

Running low superheat and low subcool....txv stuck open.....you can add and add refrigerant....need new txv.

Jp, I bought an H10PM off ebay and something in it is not sensitive. What can I replace to make it work better? Got a new battery. It goes off only slightly on the reference bottle

Go back to the crack pipe

Got one sman3 back, two weeks later, the liquid side of the manifold will not allow recovery. Any solutions? It unscrews, but will not allow refrigerant to pass through.

We see txvs every week running 30 sh at the condenser that were designed for 10-20. Lennox technical says this is acceptable for their equipment. No other manufacturer to my knowledge does. Had s...

Yes, there must be enough refrigerant to drive the txv. Corrected.

You should not gain 13 degrees in the lineset, even if it is uninsulated in the chase.

The txv is designed to hold a certain superheat and when they don't hold it, they are broke, regardless of subcool. Subcool indicates the amount of liquid refrigerant leaving three condenser....

New startup is hard. I did it in 2005 when market was good and still had to walk the streets.....literally. If you need business, walk the street with flyers....not glamorous, but always effective. I...

All of our techs carry and have permits.

Superheat is normally read as close to the compressor as possible. Return temp of 63 will overheat many compressors. Txv superheat differs according to design. Goodman=5-7deg at the suction service...

After owning 10 fieldpiece meters, I personally would have hard time calling them "bulletproof".

We just switched to Fluke 902 and like it. Milwauk hvac meter was a piece of junk.

We have two of them, handy when you need them, too weak for serious cleaning, break all the time....switches, leaking pumps, etc.

We had 3 sman3 failures in 11 months of use. 1 died in 13 days, the other two were 11 months exactly. not as bad as our testo experience, but far from good. end analysis: typical junk ...i still have...

The question remains, do you use different recovery units also? There would be far more oil in the recovery unit than the insignificant amount in the hoses.

Just had another one today. 2 yr old york air handler, bad ECM motor. Is there any adequate drop in solution? This one was a 1/3 hp non programmable. pretty much everyone we install has an ecm, and...