We recently compiled a list of the 12 Best Stocks to Own for Grandchildren. Comfort Systems USA, Inc. is placed fourth among them. Comfort Systems USA, Inc. (NYSE:FIX), a leading provider of mechanical and electrical contracting services across the U.S., continues to strengthen its position with strong financial results and strategic growth initiatives. The business specializes in HVAC, plumbing, electrical, piping, and related off-site construction and monitoring solutions, serving a broad range of comme ...