A quick video to demonstrate how an Armstrong Air conditioner is much quieter and more efficient than a neighboring York Air Conditioner. The new Armstrong Air conditioner (a brand from Lennox) was installed by Barrie Furnace Repair here in the city of Barrie, Ontario. The warranty is 10 year on parts and 1 year labour. It was installed on wall brackets and a sound pad. The efficiency of this unit is rated 13 SEER.