I have been using Martinez A/C & Heating, for about fifteen years. They are always the first ones I call! I have and will continue to refer them to my friends for any problems with their HVAC/AC system. They came out recently because my thermostat would not work and kick on the AC. They always call me to make sure that I am home when they are on their way out. They found that the wiring from the termostat my system was bad and replaced the wiring. They always do such a great job and it never takes them long to figure out what the issue is! They are wonderful and very personable, down to earth and are always professional, friendly and cost effective!