Heating & Furnace Preventative Maintenance is important. Keeping your family warm throughout the year is certainly no small matter, which is why we at McWilliams Heating, Cooling and Plumbing make heating maintenance one of our top priorities. A well-maintained furnace, boiler or heat pump is one that will keep running at maximum efficiency throughout the year. Furthermore, our maintenance professionals can catch and correct small issues before they become big ones, saving your family money on expensive repairs that could otherwise be needed down the road. In general, we recommend that heaters be serviced once every year to stay as efficient as possible.