A s.

Rip out the old system and replace with the new system from Lennox. The install crew of two was thoroughly professional: - Addressed and explained all the concerns we had - Respected our property. Whenever there was a need to step outside the red carpeted work area, took the time to remove their work boots. - Installed a proper shutoff valve for the humidifier. Previous one was a piercing type. - PVC drain pipe fastened to the floor. Previous ones were just tubings, three of them, one of which was too short. - Cleaned up when job done. - Explained the operation and maintenance of the thermostat, air filter, and humidifier pad. - Unfailingly polite and easy to deal with.