Welcome to Johnny On The Spot. We are proud to be a leading HVAC company serving the ac repair Las Vegas and replacement needs of homeowners and small businesses in the Las Vegas area. From the first contact to sign off, Johnny On The Spot is the heating and air conditioning service partner you need. We are a Trane Comfort Specialist, but our team of dedicated, certified professionals is trained to service all brands and models of HVAC equipment. Make Johnny On The Spot your first call for emergency repairs, preventive maintenance, and heating and cooling system installation. You’ll appreciate having an honest and reliable company on your side.