I was having trouble with my furnace earlier this week.
I came across Sierra Air which was referred to by a friend of mine.
When Alex who owns Sierra came to visit, I was very surprised at how Professional and polite he was from the beginning. HE was able to come in and identify the problem. He even went out of his way to see if there were any other issues with my gas piping and noticed there was some carbon monoxide traces in the basement. He got to work right away and I must say did an excellent job. Very clean and handy work. Replaced my furnace in almost no time at all and the pricing was more than reasonable for the kind of service that I received. very honest and showed me the parts he replaced and how they work. I highly recommend this company and the great services they provide. 5 stars for me and hope you have the same great experience I did! thank god I got some heat just in time for winter!! Now the wife is happy :)