HVAC Service in Lisle, IL
MMDS has been fixing and replacing furnaces, air conditioners, boilers and heat pumps across the Chicago suburbs since 2003. Our Wheeling location is about 25 miles away. When you call, you talk to the people who do the work, and most Lisle service calls are seen the same or next day.
Hours: Monday–Friday, 7:30am–5:00pm. Emergencies: we take calls 24/7.
What We See in Lisle Homes
Lisle has postwar homes plus many townhomes and condos from the 1970s and 1980s, where tight closets and shared walls make equipment fit important. A few things come up often:
- ACs still running R-22. Older ACs that use R-22 refrigerant are getting expensive to recharge. If yours is leaking, replacement usually makes more sense than repeated refills.
- Old thermostat wiring. Older homes often have two-wire thermostat runs. We make sure new equipment and thermostats are wired to work properly.
- Original ductwork and small returns. Many postwar homes still have the original duct layout with one or two returns. A new system can’t perform if it can’t breathe, so we check airflow first.
HVAC Services in Lisle
- Cold-climate heat pump installation, including dual-fuel setups that use the heat pump most of the year and your furnace below about 35°F
- Furnace and boiler replacement
- Heating repair
- AC installation and replacement and AC repair
- Maintenance plans and tune-ups
- Indoor air quality, thermostats and duct cleaning
Replacement Costs in Lisle
Every house is different, but here are honest ranges: AC about $4,000–$8,000; heat pump about $6,000–$10,000 before rebates; furnace about $4,000–$10,000 depending on size, efficiency, brand and location. We install Trane, Carrier, Bosch, Midea, LG, Gree and Goodman, and all equipment comes with a 10-year factory parts warranty, with extended labor coverage included or available depending on the package. In our climate, paying extra for anything above about 17 SEER2 rarely pays back.
Rebates and Utilities in Lisle
Lisle homes get electricity from ComEd and natural gas from Nicor Gas. ComEd offers instant discounts on qualifying heat pumps, which is why heat pumps have become a realistic option here. See our heat pump page for current ComEd discount details. The federal 25C tax credit for heat pumps and furnaces ended for equipment installed after December 31, 2025, so if someone is still quoting it to you, ask questions.
Maintenance
Our one-time tune-up is $150 and includes a real cleaning of your equipment. An inspection is $79. Maintenance plans start at $15/month and cover an AC visit before cooling season and a furnace visit before heating season.
Lisle HVAC FAQ
How fast can you get to Lisle?
Our Wheeling location is about 25 miles away. Most service calls are same or next day, and emergencies are answered 24/7.
Are there heat pump rebates in Lisle?
Yes. ComEd offers instant discounts on qualifying heat pumps, and after the discount a heat pump often costs about the same as a straight AC replacement.
My AC still uses R-22. Should I replace it?
If it’s running fine, there’s no rush. If it’s leaking or needs a major repair, replacing it is usually smarter than paying for expensive R-22 refills.
Nearby Areas We Serve
We also work in Naperville, Downers Grove, Glen Ellyn, Wheaton, Warrenville, Winfield. See the full service area.
Schedule Service in Lisle
Book online or contact us and we’ll get you on the schedule.