Looking on yelp reviews is becoming increasing more important to the way we find businesses. We came home from work around nine at night last week to a house hotter on the inside than outside. We found mark on yelp and saw the open 24/7 so called and he was there in a half hour. Mark diagnosed and fixed the problem in under an hour for a fair price. We slept in a cool house and I couldn't be happier with the service! Thanks mark we will be calling you next year to service and tune up our ac.