This is my 2nd Lennox XP25 system installed by Scottsdale Air. They also installed a smaller system for my daughter. The whole process from pricing to install has been painless and efficient. Steve Voirin works with you to size the system and get you a fair price. The install crew for all three have been outstanding, getting everything in in a timely manner and making sure that the system works and we know how to work it. They also leave no trace that they have been here. Highly recommend Scottsdale Air.