Morvent's One Hour Heating and Air Conditioning® is a full-service heating and air conditioning company with the ability to service, repair and install complete heating and air conditioning systems. Always on Time…Or You Don't Pay A Dime™ Get to know us We are located in Kennett Square, PA and we service Chester, Delaware, and Montgomery County Pennsylvania. Morvent's One Hour is locally owned and operated. In addition to scheduled service checks, repairs of existing equipment and installation of new equipment, we can help you find ways to reduce your energy bills. We have an extensive history of repair service on all brands of air conditioning and heating systems.