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Get 7.79¢/kWh for electricity and $3.89/GJ for natural gas on a 2-year plan.
Check out our energy plans for restaurants and learn how to make your business more energy efficient.
Want to know more about your energy options? Looking for ways to save on energy usage? We're here to help you make an educated decision.
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How do furnaces and air conditioners work together?
Updated on October 13, 2026
1-minute read
How do furnaces and air conditioners work together?
Updated on October 13, 2026
1-minute read
Your air conditioner and furnace work together to keep your home comfortable throughout the year. In many homes, these systems share a blower fan, ductwork and thermostat to circulate heated or cooled air, helping maintain a consistent indoor temperature.
Understanding how your heating and cooling systems work together can help you improve energy efficiency, identify potential maintenance issues and keep your home comfortable in every season. Learn how these systems connect, what each component does and how to keep them running efficiently.
Your furnace and air conditioner work together to keep your home comfortable. Both units use components of your HVAC system, so upgrades to either can benefit the other and improve energy efficiency overall.
Understanding how your HVAC system works can help you work out a maintenance schedule, adjust your thermostat programming and improve energy efficiency. It can also help you troubleshoot issues when working with a qualified HVAC technician to ensure they run safely and efficiently.
How about tracking your energy use? Tracking energy consumption can show how much you’re using so you can determine how to cut back. When you sign up for an energy plan with us, you’ll get the tools you need to keep track of your energy usage. That information can help you reduce energy use and lower your monthly bills.
In a typical central system, yes. The furnace's blower circulates heated air in winter and moves air across the air conditioner's indoor coil during cooling.
No. During normal cooling operation, the blower runs but the furnace's heating components do not produce heat. The air conditioner removes heat from the indoor air.
They usually share the supply and return ducts in a central forced-air system. Ductless air conditioners and other system configurations work differently.
Yes. In a system with a shared filter, a dirty filter can restrict airflow during cooling as well as heating. Follow the equipment manufacturer's maintenance instructions.
Not always. An HVAC professional can check equipment condition and compatibility, including blower capacity and controls, before recommending whether one or both systems need replacement.
Find out how you can keep warm or cool, and comfortable with new high-efficiency ENERGY STAR qualified products.
Learn the common signs your air ducts need cleaning and how duct maintenance can affect comfort, air quality, and home efficiency.
Planning to install an air conditioner or furnace yourself? Here's why you should leave it to the professionals to avoid additional cost and repairs.
