furnace maintenance and cleaningFurnace Maintenance is Key to the Lifespan and Efficiency of your System


Performing regular maintenance on your furnace will prolong the life of your equipment and save you money on your energy bills. Annual furnace tune-ups are recommended because proper maintenance and tune-ups will help your furnace:
• Have a longer lifespan
• Decrease the chance of needing costly repairs
• Ensure your system is operating safely
• Increase the efficiency of the system

If your furnace is not working as it should, its efficiency is dramatically reduced. This can cost you hundreds of dollars on your energy bills. Worse yet, if your furnace is leaking carbon monoxide, the safety of your entire family could be at risk. A neglected furnace could result in costly repairs or deadly consequences. Also, many furnace manufacturers warranties are void if the furnace is not properly taken care of.

D & T Heating and Cooling Offers Furnace Inspections


We want to make sure that your furnace is fully functioning, so you can stay warm and cozy when the temperatures begin to drop. D & T Heating and Cooling’s furnace maintenance service includes:


  • Routine diagnostics
  • Thermostat testing
  • Changing or cleaning air filters
  • Testing airflow from the furnace, air ducts, and vent pipes
  • Cleaning the motor and fan
  • Inspecting the fan belts
  • Cleaning the burners
  • Lubricating all moving parts
  • Tightening all wire connections
  • Inspecting chimney/flu
  • Assessing the safety by checking for carbon monoxide (CO)


We also offer maintenance agreement packages for prepaid routine services. Contact us today at (815) 485-7400 or (708) 388-4352 for furnace maintenance, New Lenox furnace repair, and Frankfort HVAC replacement.

Water Heater: Repair • Maintenance

At D & T Heating and Cooling, we also offer repair and maintenance on all makes and models of water heaters. Contact us today at (815) 485-7400 or (708) 388-4352 to learn more.

100% Customer Satisfaction Guarantee


At D & T Heating and Cooling, our primary goal is 100% customer satisfaction. A happy customer will be a returning customer and one who will recommend us to friends and family. We strive to provide timely, complete and friendly service to all of our customers. If you are unhappy with the HVAC services we provide, simply call us and we promise to make it right. Call (815) 485-7400 or (708) 388-4352 for the best HVAC service in the southern suburbs!

Contact D & T Heating and Cooling today to find out how we can help you stay comfortable and save you money!

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