Before you spend your time and money, do a little homework on your mechanical contractor. Insist on a written proposal. Have some skepticism about the lowest bid. If it sounds too good to be true with anything else, it probably is. Many fly-by-night contractors often use low-quality materials and do substandard work. PMS Mechanical is affiliated with some of the largest manufacturers and to be approved by them you must have a history of using the correct materials and installing them per their standards. Confirm your contractor has a permanent address, telephone number, has a tax identification number. When making a final selection, make sure your contractor has a list of clients that were completely satisfied. Some of our well-known clients are: