We offer free estimates on HVAC replacements and FAST, SAME-DAY SERVICE.

Trusted HVAC Experts in Aurora & Beyond

Franzen Heating & Cooling provides fast, reliable heating and air conditioning services for homes and businesses in the Aurora and the western suburbs. We offer 24/7 emergency service, same-day appointments, and free estimates on new equipment -- all backed by over 20 years of experience and our commitment to honest, high-quality work.

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(630) 859-2164

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“Thank you for coming out so quickly and repairing our AC unit.”
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“They were happy to schedule an A/C install on a Sunday morning.”
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“Arrived when promised, friendly and knowledgable.”
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Franzen Trane AC

Franzen Heating & Cooling

Whether it's the peak of summer or the heart of an Illinois winter, your comfort starts with a reliable HVAC system. At Franzen Heating & Cooling, we specialize in keeping homes cool when the temperatures rise and warm when the snow starts to fall. From high-efficiency air conditioners to powerful Trane furnaces, we install and service the systems that keep you comfortable all year long.

Our Services

A/C Repair

A/C Repair

Fast, reliable air conditioning repair services. We fix all makes and models - no cool air, strange noises, or leaks? Call us today.

Heating Installation and Repair

Heating Installation and Repair

When it comes to keeping your home warm and cozy, Franzen Heating & Cooling is your trusted partner in Aurora, IL and the surrounding areas.

Water Heaters

Water Heaters

With over 20 years of experience, our trusted locally- and family-owned business is equipped to handle all your water heater needs.

Duct Cleaning

Duct Cleaning

We are committed to improving your indoor air quality through expert duct cleaning services.

Industrial HVAC Services

Industrial HVAC Services

Franzen Heating & Cooling delivers industrial HVAC services tailored to the unique needs of businesses in Aurora and the surrounding areas.

A/C Installation

A/C Installation

Upgrade your comfort with a new, energy-efficient air conditioning system. We offer expert A/C installation and HVAC replacement in Aurora and nearby areas.

FAQs

The most important thing to look for when buying a central air conditioner is the contractor who will be installing it. If installed incorrectly, the best piece of equipment won’t give you the comfort you deserve.

HVAC equipment, especially air conditioning equipment, requires great skill and care during the installation process. If just a braze or solder joint is not correct, it could lead to leaks of refrigerant into the atmosphere and potential contamination in the refrigerant system. These items are expensive to repair, not to mention time-consuming and aggravating. Get in touch us for assistance.

If your furnace is more than 12–15 years old, needs frequent repairs, or isn't heating your home efficiently, replacement may save you more money long-term. We can inspect your system and help you decide the most cost-effective path.

Yes, annual maintenance on the unit extends its life and reduces annual operating costs. Yearly maintenance inspections can spot small problems before they become large and expensive repairs.

This depends on the type of filter and how you use your furnace. Review the types of filters from the list below:

Disposable filters: A disposable filter should be changed every 6 to 8 weeks. This type isn’t very efficient and provides only a basic amount of air cleaning. If your furnace fan runs continuously, it should be cleaned every 3 to 4 weeks.

Electrostatic air cleaner: Electrostatic air cleaners should be cleaned monthly. To do so, vacuum the nylon media and then rinse the filter with water. Be sure to rinse in the opposite direction of the airflow. The older the filter, the more difficult it will be to clean.

Electronic air cleaner (EAC): An EAC works well until the cells get dirty. When cleaning the cells, don’t break any of the thin wires on the outside of the cells. If a wire breaks, the EAC won’t work. Be sure to clean the prescreens as well.

Hammock: Hammock filters must be washed and replaced every 8 to 10 weeks. When you purchase a replacement hammock filter, it might be larger than the metal frame it’s attached to. Simply install the filter on the frame and trim off the excess.

Large, pleated media filter: You should replace the media cartridge annually. Have the cartridge replaced at the same time as your annual maintenance service.

 

Washable filters: Clean washable filters every 6 to 8 weeks. If you run your furnace fan continuously, you should wash filters every 3 to 4 weeks. If there is visual degradation, please replace the filter.

This temperature variation is due to the fact that cool air is heavy. Heavy air takes more effort to move, especially upwards. Your furnace fan has to work harder to move the air up two stories. Additionally, cool air, unlike warm air, tends to fall. Once you manage to get the air upstairs, it will fall back to the first floor.

  1. Make sure the furnace fan is on the highest possible setting. Most furnaces installed today have a multi-speed, direct-drive fan motor. Ask your service contractor to make sure the highest speed is being used for air conditioning. If the fan motor has belts and pulleys, check with your contractor about installing a larger pulley.
  2. Adjust the balance on your ductwork to force as much cool air upstairs as possible. If your ductwork is accessible from the basement and has dampers installed in each of the supply air runs, make sure the dampers for the upper floor are open fully. Close any dampers for rooms on the first floor that do not get much use or are very small (such as the powder room, formal living room, or dining room). Keep the dampers fully open for the kitchen and the main living or family area. If the ductwork isn’t accessible or doesn’t have dampers, you may balance the airflow by opening and closing the dampers in the supply air registers. If you can’t get a register closed, covering the register with a telephone book works well. Re-balance the ductwork system when you switch over to heating. During the heating season, you’ll want most of the warm air delivered to the first floor. It will move on its own to the second floor.
  3. Use fans to move cooler air. Place a large fan at the top of the stairway to draw the cooler air up. A ceiling fan on the second floor can be a big improvement.
  4. Check your return air grills and make sure they are clean.
  5. Install “high-wall” return air grills on the second floor.
  6. High-wall return air grills are installed near the ceiling, not the floor. This enables the furnace to draw the warmest air from the top of the house back into your system. A service contractor can give you more information and let you know if it’s possible to install high-wall grills on your system.

Areas Served

Why Choose Franzen Heating and Cooling

  • Checkmark Same-Day Service
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  • Checkmark 24/7 Emergency Service
  • Checkmark Senior & Veteran Discounts
  • Checkmark 24/7 Live Call Center
  • Checkmark Financing Available
  • Checkmark Trane Dealer

Choosing Franzen Heating & Cooling means selecting a partner dedicated to your comfort and satisfaction. We stand behind our work with a 10-year parts and labor warranty on new installations, giving you peace of mind for years to come.

Our commitment to customer service is evident in our 24/7 live call center, ensuring that you can always reach us when you need assistance. And we don't charge extra for same-day service or travel time.

We understand that HVAC services can be a significant investment, which is why we offer flexible financing options to make our services accessible to all.

As a local business, we take pride in serving our community and offer special discounts for seniors and veterans. When it comes to insurance claims, we work directly with all major providers to simplify the process.

Take advantage of our heat exchanger guarantee: If our diagnosis of your furnace is wrong, we'll install a new Trane furnace for free. With Franzen Heating & Cooling, you're not just getting a service provider – you're gaining a long-term partner in home and business comfort.

📞 Call (630) 859-2164

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Trane: Built to Last. Backed by Franzen.

Trane has earned a reputation as one of America's most trusted HVAC brands — consistently rated for reliability, customer satisfaction, and long-lasting performance. It's no wonder their motto is “It's Hard to Stop a Trane.”

As an authorized Trane dealer, Franzen Heating & Cooling brings factory-trained service and expert installation to every Trane system we install. Watch the video to see what sets Trane apart.

Recent HVAC Work

Furnace Installation & Duct Upgrade

Furnace Installation & Duct Upgrade

Franzen Heating & Cooling completed a full furnace replacement for a residential property in Naperville. Along with installing a high-efficiency unit, our team upgraded sheet metal ductwork to improve airflow and overall comfort. The homeowner now enjoys reliable heating with lower energy costs, backed by our trusted service and expert craftsmanship.

On 8/18/2025 in Naperville, IL

Commercial A/C and Industrial Ventilation Installation

Commercial A/C and Industrial Ventilation Installation

Our team installed a new commercial A/C system and industrial ventilation for a large warehouse in Naperville. This project included advanced ventilation solutions designed to maintain optimal airflow and ensure employee comfort in a demanding environment. The owners were highly impressed with the professional setup and the noticeable improvement in air quality and temperature control. Need industrial-grade A/C solutions? Call (630) 859-2164 to discuss your project!

On 7/29/2025 in Naperville, IL

Same-Day A/C Repair in Summer Heat

Same-Day A/C Repair in Summer Heat

Franzen Heating & Cooling provided emergency repair service for a homeowner in Aurora whose A/C stopped working during this 90°+ heatwave. Our technician arrived the same day, diagnosed a failed blower motor, and had the system up and running in no time. The family was grateful to have cool air restored so quickly. Need fast and reliable A/C repair? Call (630) 859-2164 today!

On 7/22/2025 in Aurora, IL

New A/C Installed Before July 4th Weekend

New A/C Installed Before July 4th Weekend

Franzen Heating & Cooling completed a full A/C system replacement for a home in Batavia, just in time for the July 4th holiday weekend! The old unit had been struggling to keep up, so we installed a new high-efficiency system that now keeps the entire home cool and comfortable. The homeowners were thrilled to celebrate the holiday in comfort. Thinking about a new A/C? Call (630) 859-2164 for a free estimate!

On 7/2/2025 in Batavia, IL

Installed a 3 ton Mitsubishi Minsplit

Installed a 3 ton Mitsubishi Minsplit

Installed a 3 ton Mitsubishi Minsplit in a garage last week. This is a great way to cool the garage or shop this summer. You can see we used our Franzen Trick of covering the lineset and control wire with a gutter. This really makes the ugly lineset blend in nice.

On 3/16/2025 in Geneva, IL

Reviews

Al Runde

Jul 15th

Our AC unit died on the 3ed of July , Franzen had a tech here to access my situation and we needed a total AC overhaul of our 30 year old unit.
We were quoted a good price and great finance option I qualified for.
We just had our new unit installed by their crew and could not be happier , we signed up for the service on the new unit and our older boiler.
Great service , great techs, 5 stars... - Read more on Google

Devin Corbett

Jun 29th

Great job! They quoted a fair price, arrived on time, two installers were both professional, courteous, thorough and finished sooner than I expected! Thank you for making it quick and painless! - Read more on Google

Michael Anderko

Jun 27th

Jason from Franzen came out within a hour after calling, during a heat wave. Jason was very knowledgeable, nice, quick and explained everything! He had my air conditioner up and running in a half hour! I will use Franzen again.
Thanks, Jason - Read more on Google

CFFRV

Jun 25th

Outstanding service! Thank you, Franzen Heating & Cooling, for coming out so quickly and repairing our AC unit. Jason did a fantastic job and explained everything. He even took photos and showed me the old part that had burned out. I learned a lot and would highly recommend your company. Thank you so much! - Read more on Google

V Kale

Jun 25th

Reliable and honest hvac company. I recommend their services. - Read more on Google

Spencer Gardner

Jun 24th

I had an old furnace and AC unit that was over 26 years old and had been giving me trouble; leaking refrigerant, short cycling, etc. I got quotes from a few other companies in the area, but Franzen stood out as the best choice overall.

Logan came out to check out my system and gave me some solid recommendations. He was friendly, very knowledgeable, and took the time to explain everything cle... - Read more on Google

Vanessa Delatorre

May 30th

Great customer service. - Read more on Google

Kiran D

May 30th

I had my AC unit replaced by Franzen Team and they did a great job. Satisfied with the work performed and the professionalism. - Read more on Google

Jon Doud

May 29th

Outstanding service. They were happy to schedule an A/C install on a Sunday morning - always willing to go the extra mile. Install team of Logan and Sean were excellent; courteous and professional. I would highly recommend. - Read more on Google

Coupons

$700 AprilAire 720 Humidifier

Stay happy and heathly with a humidifier. See Us for a New Humidifier 

$600 AprilAire Bypass Humidifier

Alleviate dry air indoors all winter long. Invest in a New Humidifier 

10-Year Parts and Labor Warranty on New HVAC Installations

Put our 20+ years of HVAC experience to work for you. Contact Us Now!

Veteran Discount for HVAC Services

We offer discounts for veterans on our HVAC services. Reach Out to Us!

Senior Discount for HVAC Services

We offer discounts for seniors on our HVAC services. Reach Out to Us!