San Diego, CA
I hired Carini Heating and Air Conditioning to replace my 23 yr. old furnace in my house in PB. The property management firm I work for uses them for all their rental properties throughout San Diego County, and I've only heard good things about them over the years from our tenants. They always arrive on time, make sure that our rental houses and condos are kept clean and their prices are extremely fair with great quality products like Rheem.
So when it was time to replace our furnace, it was an easy choice. I did some research on the Rheem equipment they proposed, and found great ratings from Consumer Reports. It's amazing how much more energy efficient this furnace is compared to the old one, and it's so comfortable in our recent cold weather (well, not today, but I'm sure it will get cold again!)