• Call Our Dispatch Numbers at 

  • When You Need a Mechanic,
    Not a Salesman!

  • At Dependable Heating and Cooling, we have specialized in residential and commercial heating and cooling services throughout the Maryville, Illinois area for the past 20 years. It is with great pride that we offer the most professional heating and cooling services in the local area, carrying products from the most respected brands in the business, like Coleman and Goodman. Whether you are having issues with your water heater and you have lost your hot water, or you are wanting to purify your air to help avoid unwanted allergens, you can rely on our team of experienced technicians at Dependable Heating and Cooling.

    We offer military and senior discounts! 

  • For Emergency Repairs Call Our Dispatch Number: 618-288-1191

  • Heating and Cooling Services in Maryville, Illinois

    If you live in the Maryville, Illinois area and are in need of heating and cooling services, Dependable Heating and Cooling is the place to go. With over 20 years of experience and a team of professionals that always bring you service with a smile; we have built a reputation of honest work at fair prices. Problems with your water heater? Is your air conditioner failing in the middle of summer? Contact Dependable Heating and Cooling for a fast resolution! We also provide free estimates.

  • Light Commercial Services

    • AC Repairs & Replacement
    • Heating Repairs & Replacement
    • Thermostat Repair

    Click for More

  • Air Conditioning Services

    • AC Repair (Any Brand)
    • AC Replacement
    • Emergency AC Repair

    Click for More

  • Heating Services

    • Maintenance & Repair
    • Replacement
    • Thermostat Repair

    Click for More

  • Air Filtration Services

    • Purifies Stale Odors & Allergens
    • Eliminates Molds, Germs, and Pollen
    • Keeps Air Clean

    Click for More

  • Most Common HVAC Issues

  • Not Scheduling Routine Maintenance
    Having a professional contractor provide routine maintenance on your HVAC system is the best way to ensure it is working properly and helps prolong the lifespan of your entire system. An HVAC system is expensive, maintenance helps keep it protected!

    Dirty Filters
    Simply replacing your filter regularly is one of the best ways to ensure the life and efficiency of your furnace. Having a dirty filter restricts airflow which means your unit will have to work harder and the result is an avoidable strain on your heating system’s blower. Additionally, a dirty filter can result in your furnace overheating.

  • Pilot Light/Ignition Problems
    If you are having ignition problems, it could be for a number of reasons. Dirty pilot light, short cycling, furnace lockout, or a delayed ignition of the burners to name a few. There could also be a gas supply issue. Whatever the case, you can rely on our technicians for a swift fix.

    Mechanical Wear & Tear
    In every HVAC system, there are various mechanical components that your unit relies on. How your system performs is dependent on the condition of these mechanical parts like belts and bearings. During scheduled maintenance checks, our technicians check for worn or stretched belts and will oil your bearings, if necessary.

  • Dirty Condenser or Evaporator Coils
    Dirt and debris tend to clog the coils of your air conditioner, which is why maintenance is so important! Having a dirty condenser or evaporator coils can result in your cooling system being inefficient and the result is a shorter lifespan.

    Water Leaks
    Your air conditioner and furnace produce condensation and your drainpipes are used for an effective drainage system. If your drain lines become clogged or cracked, your furnace may begin to leak. If this happens, you can pour bleach down your drain lines to clean them. Other sources of leaks are in the collector box, heat exchanger or evaporator drain pan.

  • For more information about our heating and cooling services, contact our team of trained and experienced technicians!