heat an air operation

[Transit]

What ever you do, do not oversize the units. Too much BTU capacity will cool the house quickly but will not run the units long enough to properly dehumidify the house leaving a damp felling. A 75 deg night with 85% humidity, too cool to run the a-c long enough to deal with all that water without making he house cold and too warm to have the windows open. That is why I suggested units with multi speed compressors.
What is the best brand for a home central air conditioning system?

 

[heehaw]

no contractor involved: i've built several houses an never saw a need for a "contractor":
heehaw

 

[Sigarms]

no contractor involved: i've built several houses an never saw a need for a "contractor":
heehaw

Hmmm...

I'm guessing you use the beer can method for your pressure readings

 

[kenmac]

Hmmm...

I'm guessing you use the beer can method for your pressure readings

Sorry but,
I have a patent pending on this method. I also have 1 when the large line sweats it's correctly charged

 

[Sigarms]

Sorry but,
I have a patent pending on this method. I also have 1 when the large line sweats it's correctly charged

Let me guess, you time your vacuum pull on three cigarettes?:laughing:

 

[heehaw]

looks like we have different definitions of the word contractor: i use professionials that work: not ones the "co-ordinate and schedule". nothing against what i call a contractor, but i prefer to pick my own workers an professionals: not someone that is managing several different jobs at the same time: just a matter of preference.
heehaw

 

[Sigarms]

HVAC contractor- one who works in the HVAC trade and has the appropriate state license to practice that trade, and is licensed and insured.

 

[heehaw]

i have never thought of any of the different professionals as being contractors when building a house, sub-contractors for sure, but i guess its just a difference in how its defined: but yes we do use licensed professional hvac folks: even then i am sure there are a lot of us that can quote some horror stories: as with all professions: sometimes i think we would be better off if we went back to wood stoves an window ac units.
heehaw

 

[RavensRoost]

If no ductwork in the new upper section, have a look at the ductless minisplit units e.g. Mitsubishi "Mr. Slim". Have heat pumps and believe they even have multiple room units where one condenser runs 2 wall/evaporator units.

 

[zzvyb6]

I've gone with the 2 unit deal and am glad I did. I really only use one at a time for heat and one and sometimes the other for A/C.

The heat situation means living where the heat is. I don't really need a lot of heat in the sleeping quarters, especially during the day, but sometimes it kicks on.

The A/C situation is sort of the same. We congregate where the cool air is (really the humidity is lower). I like sleeping in cooler air so the 2nd unit does its job, but at night the other A/C unit seldom runs.

The point is that both units seldom run at the same time, AND I have a spare unit in case one of them ever fails.

I have 4 large dogs. They generate a LOT of heat. So in the Winter, they sleep in the room with me. That's a good thing. In the Summer, they also sleep in the room with me. That's a BAD thing. And, they like it very cool all the time.