When our upstairs HVAC expired after nearly 30 years, I contacted several HVAC companies for replacement estimates. Doug, from Sig Cox, give us an estimate. He was very professional compared to other companies and his estimate was very competitive. The work crew had a challenging installation but handled it in stride with little complaint and included several extras I hadn’t even thought of. Their clean-up was great and they were extremely polite and eager to please. The paper work was handled very efficiently also. I wholeheartedly recommend them.