So I read a bunch of reviews on Armstrong Air after it was recommended by a contractor I know. I cannot stand when someone comes on and gives a product a 1 star review, and then proceeds to explain how crappy the contractor was in their review. So…once I took out the 1-2 star reviews that clearly had an issue with their contractor and quality of installation, rather than equipment, the satisfied score went up quite a bit, and I took a chance on it. We live in Katy, Texas, which is just west of Houston, and had a Rheem unit for the last 7 years in a 7-year-old home which has given us nothing but problems. The contractor installed the Armstrong 2-stage 16-SEER communicating heat pump with a variable speed air handler and Armstrong's Comfort Sync thermostat a little over 3 months ago. The contractor did a quality install and the unit operation reflects it. When he first started up the unit I waited to see when it would come on. Little did I know, the unit was already running but was so quiet that I couldn't tell whether it was on until I stood under the air supply grille. The thermostat is very easy to set up and use, it's fully WiFi and gives me access to the system from anywhere via free app. Another cool thing it does is troubleshoot itself, and when my filter was a little too dirty because I forgot to change it with 3 large dogs in the house, I got a notification on my cell and on my thermostat that my filter was dirty and recommended changing it. Did I mention this thing is freaking quiet? I wish I had the money to go with their Inverter 20 SEER product that the contractor tried to upsell me to, but alas, I couldn't justify spending $12,000 on a system that I'm going to leave to someone else in 3-4 years when we sell, as we are planning to do. Overall, I was extremely pleased with how this unit runs and how it is built. 3 months in and my highest electric bill on a 2,400 square foot house which is kept at 76 during the day and 72 at night has been $156.00 and that was this last billing cycle, 2/3 of which was July.