We spent thousands of dollars with them, and their techs are good guys. But the corporate policies are incredibly unfriendly and negative. E.g. we had a loose thermostat (1 of 4 that they installed) and we asked them to come fix it. They charged us $75 for the ""service call"" and then wanted another $125 for what the tech said would take him less than 10 mins to fix - far shorter than the amount of time I pleaded with his boss on the phone to simply let the guy fix it since it was their install to begin with. No bending there, they demanded their pound of flesh...and forever lost a customer (and hopefully others who read the reviews I'm posting all over the internet).
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