Aire One installed an A/C, humidifier and programable thermostat in our home in 2005. Last week (5 years later) the unit broke down and I called Aire One for service. They said they could come the same day, but couldn't really gaurantee they'd be able to fix it that day (temperature outside was > 30 and i have a baby in the house...not acceptable in my opinion). I said thank you and called another company for service. They came same day and fixed the problem, however discovered a problem with the motor, plus indicated it hadn't been installed properly. We called Aire One to do this work under the manufacturers warranty, since they were the original installers, however they insisted it was no longer under warranty and wouldn't be able help us. We knew this was untrue, as my husband had already contacted the manufacturer who said it would be covered. The person on the phone continued to argue, despite this information and wouldn't take the time to call the manufacturer to verify. In the end, we have found another company that was able to check with the manufactuerer (it took all of 5 minutes to hear back from them) and they will do the work with us. They have indicated that our AC unit was not registered properly with the manufacturer. So it seems that not only was it not installed properly, it wasn't registered properly. And only 5 years later we are having major issues.