YES they will rip you off. Jerome came over as my tech to do the annual check up on my heater. Long story short told me my heaters were unsafe and leaking high leveled of carbon monoxide. Funny my carbon monoxide detectors didn't go off and I test them monthly. Told me I needed new ones at $4K each, I have 2. Of course he push for me to buy betters ones at $5K a piece. Lets not mention the deal I would get if I bought 2 A/C units as well at the same time cause those are going to be going out soon too. He must me physic cause he never touched them. Total cost $18K. After 2 second opinions my A/C units were fine and the heater was repaired at a total cost of $160. The same exact thing happened to a buddy of mine and all he needed was more coolant. But they will talk up how good they are and how poor every other company is. Stay far away from the YES man.