As an engineer I knew exactly what size unit and extras I needed for my home. With that knowledge I requested quotes from several well respected companies. Encore was the only one that did not try to oversell or up-charge me. The installers were very professional and clean. They came prepared with all the necessary tools (I've experienced the opposite several times) they didn't stop until they were finished many hours later. I have recommended them and have heard the same comments from our friends. If you're shopping for a new system have them give you a quote, you'll be pleasantly surprised.