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I respectfully disagree with Beenthere about the minimal SEER increase by adding a TXV valve. I indeed find that with those cheaper, very small condensor 10 SEER systems the efficiency gain is lower,...

You can also talk with your service professional about the possibility to replace the metering device with a TXV valve.
It will cost you some money, but it will increase the SEER rating from 10 to...

I’m not that familiar with Trane units. If you want to go with a VS air blower, I would definitively make sure I’m getting one with a more efficient ECM motor (versus PSC).
Maybe Trane only uses...

For the R22 believers, there is now a drop-in replacement. It is called R-434A (or RS-45). It is just recently approved by ASHREA.
Read...

I hope I don't hurt anybody's feelings, I'm not a firm believer in heat pumps for heating.
I'm sure that the claims they make are valid (e.g. COP 2.8). This makes that for every KWh you're using and...

I live in TX myself, I believe strongly in the possitive effect of RB.
BUT, does anybody knows something about the effect on the roofing material (e.g. asphalt shingles). It must be that the roof...

I was reading some articles and stumbled onto a pdf explaining the benefits of a new refrigerant Ikon B.

It is supposed to be a drop-in replacement for R22 and yields a better cooling efficiency....

[QUOTE=bustawrench1;1495508]My total sales for 2005 were 1.4 Million.

That was on top of the 2300 hours I billed out for.

The first quarter of 2006 I sold $300,000 and billed 600 hours.
...

Davidr my mistake. I also believe that duct losses are far from neglectable. My question should have been:

Chillbilly, could you share the parameter settings used to come to the 4%: duct length...

Interesting discussion!
I have a hot attick, >110F in the Summer.
Ducts have a length between 10 ft and 40ft, only R3.
I once measured the temperature difference between a return grill and an...

I can't help it, the more I think and read about it the more I doubt the value of the SEER rating for people living in Southern states.

SEER is a kind of averaged efficiency rating for an...

Jim, I'm afraid you're off and not even a little bit.
The house is cooled by boiling of the liquid refriggerant in the evaporator coil. With R22 and 70psi it boils around 34F, so plenty of...

Well, I don't give up that easily...
I should have said "I would say, for the time being the water misting myth is busted WITH MY SYSTEM CONFIGURATION", meaning:
- my freon charge set for a...

I'm sorry typo:

Suction pressure before misting: 80 psi (not 62.5)

I want to thank everybody for their contributions/thoughts.

I started this 'project' on my old airco system (11 year old). Even if the condensor is wasted after a couple of years because of...

I have an 11 year old YORK split airco system, 3 ton. No TXV valve.

1. I want to increase the efficiency of my HVAC system. I put some 12 water misters around the outdoor condensing coil. Water...