- January 9, 2021
JM Heating and Cooling has been dedicated to offering professional HVAC services to Longmont Colorado and the surrounding cities for over 10 years. JM Heating and Cooling is a family owned and operated business dedicated to providing expert work and ensures customer satisfaction. Whether you presently own a home and are planning to upgrade your old furnace and air conditioner or you are a contractor in need of an HVAC expert in Longmont, call JM Heating and Cooling today!