Great company! The first estimate I got was just to replace a missing retainer in the electric panel for around 250. Cal Tech came and looked at it and replaced the same retainer clip, but went the extra mile to recommend CO smoke detector combos which are now required by code and they also took the time to do a full service on the panel, all for a little less than the other company wanted. They were prompt, courteous, and honest. Great job Cal Tech.