First post here - great forum, thanks to all you pros/experts helping out!
I bought this 1946 home a few years ago, my first home. It has no A/C because as folks in the SF bay area know - you don't need A/C here (HAH!). My first summer it was over 90F in my house for a couple of days and I decided A/C is critical (I'm from Miami where A/C = life). I ended up replacing the 20yr furnace with a complete 4 Ton Trane 14XLi setup reusing my existing ducts etc but adding a return and one vent in the kitchen (which had none). I have a lot of complaints and problems but I'll save the rant for anyone who wants to pull it out of me. What I'm hoping for is help addressing my electric bill, which is HUGE, and a warm-room cold-room issue, and about 17 times less important is the ridiculous amount of wind-noise coming out of my (newly installed) kitchen A/C vent which is very close to the assembly in the attic.
The state of things. I have plenty of windows on my southern exposure - all are reasonably new double-paned gas filled UV tinted windows (some framed in aluminum, some in plastic). Most of the house has an attic. Most of the vents are flexible insulated and hanging from the roof, some are bent hard enough that I wonder if the duct inside the insulation is somewhat blocked form being bent constrained. From the attic I can see the shake-shingles and the roofing nails etc. There is about 2" of blown-insulation scattered around the attic floor. The largest room, a recentish addition, has no attic and a high ceiling - this room has two 10 or 12" square vents with huge ducts connected to them (they are both vents, not returns) - this room is always the coldest in the house. The master BR runs hot in the summer and the study (on the north-west corner of the house) runs way hot in summer and way cold in winter. I have tall trees on the east side of my home and get very little sun from there, moderate sun from the south, and the NW corner gets a lot of sun in the late afternoon. The master BR has two tiny vents (4" ducts) and the study (NW) has a single small vent (4" duct); the study is almost directly below the attic-unit.
I hope I provided enough, and not to much info. I'm happy to crawl/measure/smell to get more data if that helps.
Thanks in advance for any advice you would offer.