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UPDATE:
Yesterday around 5 the temperature in the house was 77 and the temperature outside was 85- IT WAS COOLER OUTSIDE THEN INSIDE!
The installer called this morning and said " that unit is not...

Thanks for looking up the model I have Mike. The installer has played around with the speed many many times. (Not since putting in the expansion valve I believe.)
The installer is really a great guy...

Thanks Mike... I 've not heard of this 'dip switch" but then why would I... I am a graphic artist.
I looked in the book that came with the unit and I don 't see the words "dip switch". The book ...

Thanks acetc for your information.
Well nothing has changed. The Tempstar still doesn't work.
The model # on this Tempstar is PGX 348080K 01A. It does have a variable speed. ( 5 speeds I think the...

Second up date...
Ok so I am sick of all this guess work about what size hvac I need. I used this site and did a rough calculation- its not exact--- just a guideline. It tells me that I MUST hire a...

Good advice hvac1000 and I wouldn't have thought of it.
Does this seem like something that would work?
Its getting HOT here

UP DATE;
The factory recommended that a larger hole is made just before the air goes into the ac. This will reduce the static??

Yeah hvacservicetech,
The new guy that showed up today went around and measured all the ducts and wrote a bunch of numbers down and said he had to do come calculations. I didn't know what he meant...

I have just spent the last 3 hours reading about heating and ac units.
I am reading a lot of info on correctly matching the unit to the duct systems. There is a dvd that will calculate out what size...

The ducts were inspected by one of the installers and were very sound. I am a bit confused regarding the high humidity tested by the installer- which was about 66% in the air coming into the house....

Hi-JackT
Yes that is right that the last unit went bad - it was all corroded...
It was the same size- 4 ton, R22- almost 30 years old.
Yes there was refrigerant added on day two of trying to fix...

Ok so the new guy shows up with the old guy... They have been here for 5 hours.
The new guy is baffled by what is going on. He says that the situation is totally unacceptable.
They have changed the...

Yeah I am already feeling all that your wrote hvac1000, I am worried that I will have problems down the road. I am worried that the 6 thousand dollar unit won't be used to its full potential.
I...

Thank you all for responding to my question.
Yes the guy did check the freon- puron. He added some on the first try to fix it.
The unit has not cooled at all. I tried to use it 3 times before I...

I have just purchased a new Tempstar 4 ton 13 seer, 78 afeu
1410A refrigerant. Model # PGX 348080K01A1.

I had this thing installed in January, the heater worked fine. The ac won't work right....