I contacted 6 companies regarding replacement of an A/C (electric heat pump), which was nearing 25 years old and was not repairable. Of the 6 companies (most of which were recommended by others), only 4 scheduled estimates. One company wanted to be paid for an estimate, which does not seem to be standard practice in the DC Metro area. I chose them for many reasons but primarily customer service. Brad (their sales representative) came the same day I called to schedule an estimate (that was merely serendipity but I appreciated the aggressive sales technique. He provided me with an estimate in less than 24 hours and did follow-up by email and phone. Again, for others, this may be a negative but for me, it's a positive. I contacted the two other companies that provided estimates with questions--one never called back, the other took a week to respond. Brad answered all my questions (and there were a lot!) and worked with my home warranty company so I could file a claim for reimbursement. He also worked with me to determine what would be the best products for my home. They use Rheem products, which were suggested by neighbors who changed their A/C. He didn't try to up-sell, and he even revised the estimate when one of their vendors wasn't giving him the service he expected. In all, the process took less than a month from my initial call to installation. Wendy was a true delight to work with. She's friendly, outgoing, and organized. I heard from her regularly and that was reassuring. Both Hugo & Jose who did the work were incredibly professional and polite. Replacing a condenser and heat pump when the weather outside is 90+ degrees is not fun--and they were always good-natured. They came in, did their work and left. They did not dawdle, leave without explanation, make personal use of mobile phones, or other behaviors I've observed in other workers. They were considerate and conscientious. When they finished, they talked me through the paperwork, repeatedly asked if I had any questions, and cleaned up the workspace--probably better than I would have! The new equipment came with good warranties--up to 10 years and included parts and service. Not every company does that--as I found out. While they don't provide financing, they accommodated my needs and worked with me to make sure I could engage their services. In short, I would totally recommend them. Even if you don't choose to use them, give them a try for an estimate. You may be pleasantly surprised in the end and go with them!