Mission Plumbing Heating and Air Conditioning, Inc. has been in business in Shawnee, Kansas since 1978. We specialize in resi ... dential plumbing, heating, and air conditioning repairs to all brands. We are factory trained and have the nationally recognized NATE certification for your peace of mind that you have contacted a certified professional. We offer 24 hour emergency service for plumbing, furnaces, air conditioners, heat pumps, and boilers scheduled maintenance plans on your existing system and system replacement with Lennox and Trane furnaces, air conditioners and heat pumps, Honeywell and Lennox thermostats and control systems and Aprilaire humidifiers. read more