Greetings and thank you,
I just bought a house in the Conejo Valley in Southern California. Near Thousand Oaks or Agoura Hills. It is 2 stories with about 1790 sq. feet on the top floor, and 1690 on the lower floor for about 3480 square feet total.
I am looking at a new Trane system.
As to the cooling, I am being advised to get a 3.5 ton for the 2nd floor, and a 3 ton for the 1st floor. They could be a 13 SEER XB13, or a 14 SEER XB14, or a 15 SEER XL15i, or a 16 SEER XL16i. I am concerned about electric bills and decibels. My understanding is that the XL15i is the quietest. Based on my calculations, however, I don't think I pay back the increased cost from the XB13 to the XL15i for about 19 years. I'm really torn and would appreciate your help.
As to the heating, I assume since I care about quietness, I should get a variable speed heater. Is that right? My dealer is recommending a 60K BTU furnace. But 80% or 95%? Single Stage or Double Stage. Again, I could really use your help.
Thanks so much in advance. I'd be happy to try and answer any questions or give information I missed. I am almost paralyzed with indecision. But I need to move forward right away before I move in.