HVAC Service in Algonquin, IL
MMDS has been fixing and replacing furnaces, air conditioners, boilers and heat pumps across the Chicago suburbs since 2003. Our Crystal Lake location is about 5 miles away. When you call, you talk to the people who do the work, and most Algonquin 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 Algonquin Homes
Much of Algonquin, especially west of the Fox River, was built in the 1990s and 2000s. Those builder-grade furnaces and ACs are now at or past their expected life. A few things come up often:
- Two systems in larger homes. Larger homes often have separate systems for each floor. We’ll tell you honestly whether both need replacing or just one.
- Oversized original equipment. Builders often installed bigger units than needed. Right-sizing on replacement improves comfort and lowers bills.
- Builder-grade equipment at the end of its life. Many homes here still have the original furnace and AC from when the house was built. At 20+ years, replacement usually beats repeated repairs.
HVAC Services in Algonquin
- 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 Algonquin
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 Algonquin
Algonquin 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.
Algonquin HVAC FAQ
How fast can you get to Algonquin?
Our Crystal Lake location is about 5 miles away. Most service calls are same or next day, and emergencies are answered 24/7.
Are there heat pump rebates in Algonquin?
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 system is the original from when the house was built. Repair or replace?
If it’s around 20 years old and needs a major repair, replacing it is usually the better value. We’ll show you the numbers and tell you honestly.
Nearby Areas We Serve
We also work in Lake in the Hills, Carpentersville, Crystal Lake, Cary, Huntley, Elgin. See the full service area.
Schedule Service in Algonquin
Book online or contact us and we’ll get you on the schedule.