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Claim This BusinessFranzen Heating & Cooling has served Aurora and the western suburbs since 2004, building a footprint across Naperville, Joliet, and Yorkville grounded in over 20 years of hands-on work. The licensed and insured team holds a 4.9-star average drawn from 402 reviews, a volume that reflects steady local trust rather than a handful of curated testimonials. Homeowners and light commercial clients in DuPage and Kane counties call Franzen for furnace tune-ups, air conditioning installs, and the kind of 24/7 emergency response that Illinois weather demands every summer and winter without exception.
What distinguishes Franzen is their commitment to branded equipment choices and a workmanship guarantee backed by the company itself rather than a manufacturer coupon. As a Trane dealer, they specify and install that brand alongside water heaters, boilers, and industrial sheet-metal fabrication, giving them a rare in-house capability for custom duct runs and restaurant equipment that most residential contractors simply cannot touch. The Franzen Advantage Club adds a maintenance tier that rewards repeat clients with priority scheduling and waived service call fees, creating an ongoing relationship rather than a one-time transaction. Free estimates on equipment replacements and same-day availability mean a homeowner can make a decision without waiting days for a callback.
A recurring name across Franzen reviews is Tony, the owner who personally responds to emergency calls during snowstorms when other shops go to voicemail. Logan, the technician who diagnosed Michael Braun's humming furnace and replaced the blower motor the same day, earns praise for explaining each step rather than simply handing over a bill. When Stepahanie Kosack's heat failed on a subzero night, Tony drove out personally and walked her through every repair option before touching a single component. That combination of named accountability and same-day dispatch is the pattern threaded through five years of verified reviews.
Every one of five recent reviewers awarded 5 stars, and three specifically named a technician rather than using generic praise. Logan earned two named callouts for same-day diagnostics; Tony received two additional mentions for responding personally during weather emergencies. Positive reviews cite transparent pricing and cleanup standards alongside technical skill.
| Sunday | Open 24 hours |
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| ThursdayToday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
Certified installation of gas and electric furnaces including Trane branded units, diagnostic repair, and annual tune-up service for efficiency and safety.
New AC installs, refrigerant-based and high-efficiency split systems, and same-day repair for no-cool, leaks, or compressor failure.
Gas and electric boiler setup for in-floor radiant heat, baseboard heating, and commercial applications including tight-space custom installs.
Professional duct cleaning to reduce particulate buildup and a full line of filter options from disposable media to electrostatic and electronic air cleaners.
Tank and tankless water heater installation and repair covering gas, electric, and hybrid models backed by 20 years of plumbing-adjacent experience.
Customized HVAC solutions for businesses including sheet-metal fabrication, welding, restaurant equipment, and ongoing preventive maintenance contracts.
Around-the-clock availability for heating and cooling emergencies with same-day dispatch and free estimates on equipment replacement.