I am new to the forum and looking for some advice. I usually find good information on forums of this kind and have received much help on other unrelated stuff. I had my house remodeled a few months ago. The furnace was replaced as the old one was 25+ years old. My home is 2000 sq. ft. single level (Ranch style) built in 1959. I have installed double pane windows through out and the house is insulated. I live in California on Monterey Bay. The climate here is very temperate; the temperature gets down to the low 30's a handful of days a year.
The contractor installed a RUUD Achiever Series Super Quiet 80 AFUE downflow furnace (UGLN-12NARJR-125). This is a 125btu unit with a 3/4 Hp motor. The flow of air from the floor registers is very loud and excessive. It blows the drapes around, have to turn up the TV volume each time it comes on, etc. I had a tech come in and reset the heating blower speed to low but it hasn't helped. The tech explained that the 125kBTU 5Ton unit was oversized and recommended a 100K 80% 4 ton replacement. The contractor has agreed to reinstall a smaller unit. I am looking at the spec sheet and thinking about replacing it with a RGLN 10NAMER 1/2 Hp motor unit. I want to educate myself and make sure the job gets done right this time. Am I on the right track?