Sounds pretty good to me.
The saga continues. The A/C is cooling my new home but I can only get the temp down to 75 degrees on a 100 degree Texas day. I really appreciate it if you could help me answer some of my concerns below:
I doubt you need more cooling - might want to ensure that the ductwork is sealed/insulated, refrigerant charge is correct, and possibly possibly look into topping off the attic insulation. (Not sure what minimum code is there, but it would be wise to have R40-R-50)
"Green home" means nothing.
General public's attitude towards our energy predicament: "I reject the reality of finite resource depletion and substitute it with my own; energy is infinite, we just need an alternative storage medium to run the cars on. The economy can grow indefinitely - we just need to "green" everything! Technology is energy! Peak what?"
18-20 degree split on a 95 degree day with 50% humidity (design temp). The hotter and/or more humid it is outside, the lower that split temperature will get.
Do you have a copy of the heat load calculations that were done? I would be very interested to see them. It sounds like your systems may be undersized, but I'd need to see the load details before making a definitive statement.
What's the indoor humidity like? 75 degrees @ 60%+ humidity would feel very sticky and warm.
Originally Posted by TxTurbo
Good points but I doubt a heat load was ever done on his home. He came on here months ago asking for sizing per sq. ft., didn't get the answer he wanted, and left.
If that is truly the case then..well.....
So what indoor design temp was used when they did the load calc?
Originally Posted by SANDMAN_SATX
What was the heat gain the load calc said the second floor has?
When you say the first and second floor are of comparable size. Do you mean each floors sq ft of space. Or each floors sq ft to ton ration.
Attached are the load calcs for upstairs and downstairs.
By the load calcs. Your home is 3400 sq ft.
Your first floor is 376 sq ft larger. And apparently, has much higher ceilings then your second floor. So it should have a larger unit then your second floor.
According to the load calc. Your A/C was only sized to be able to maintain 75 inside when its 100 outside.
I just found out that the builder used a plan almost identical to mine to perform the load calc. All of the rooms are virtually the same but my house is basically 93 sqft larger that the plan they used for the load calc. The extra room is in the gameroom and down stairs master bath.