One Hour Air San Antonio is a San Antonio-based air conditioning contractor that has some of the most highly experienced technicians and installers in Seguin, TX. We specialize in both Seguin air conditioning repairs and air conditioner replacements in Seguin. We are always up for the challenge of solving any HVAC issue that may arise in your home or office. Why choose One Hour Air San Antonio? Here are a few reasons. We always offer low cost $19.95 service calls with any repair to our Seguin residents. We also offer FREE estimates and second opinions!