JM Heating and Cooling is Longmont, Colorado’s top-of-the-line HVAC company. We specialize is air conditioner repair and replacement. We also offer furnace repair and replacement services. We are a family-owned and operated company that takes pride in getting the job done right. Let JM Heating and Cooling improve your quality of life in Longmont, Colorado! For more information on this or other HVAC subjects, please visit: Hvac Longmont.