TR Miller Heating, Cooling & Plumbing is proud to be the #1 company for plumbing and HVAC service in Lockport, IL. Hard water and extreme temperatures mean that you need access to quality work for all of your home comfort systems. Heating and air conditioning are both must haves since Lockport can get warm in the summer and very cold in the winter. The changing temperatures also put more stress on your pipes, making regular inspections a great way to avoid major repair bills.