Sierra has for the past eleven years provided all the air conditioning and heating services for my home. Their service has always been outstanding and more than met expectations. Their dispatchers are warm and friendly when you telephone for a service call. My technician, Ryan H., is the best. his knowledge of my system is fantastic and he has a great interpersonal skills. I highly recommend Sierra to any homeowner in need of superior service. I certainly feel I have received great value for my money
more