We recently replaced our Furnace and AC unit and added an HRV. After 5 quotes we decided to go with Summers and Smith in Aurora for the Lennox product they sell, the promise of a good installation and a fair price. We had cheaper quotes but when you compared the products and the proposed installations it seemed to be the best value. Blair came by the house to give us a quote and walk us through all the intricacies of the new high efficiency furnaces, the proper sizing and the rebates.
The installation happened quickly and cleanly. I was impressed with the time they took to do it right. Steve the lead installer made sure there were no shortcuts to save materials, decisions about where to put venting were made on what was best for the house. It's only been a short while but so far we are very happy and I would definitely include them on your list of companies to get a quote from.