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Crystal Lake AC, Furnace & Boiler Services

Lindemann provides full-service furnace, water heater, and air conditioning repair, maintenance, and installation. We also service boilers, provide indoor air quality checks, and annual safety checks to our customers in Crystal Lake.

We have served over 468 customers in Crystal Lake, Illinois and over 2,255 customers in the surrounding McHenry County area.

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Furnace Installation

Customers Served

128,072 Customers Served in Illinois and Wisconsin

2,255 Customers Served in McHenry County

468 Customers Served In Crystal Lake

Zip codes served: 60012, 60014

CUSTOMER REVIEWS Near Crystal Lake, Illinois

Satisfied Lindemann Customers

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Star Full Star Full Star Full Star Full Star Full

Steve R. And James T. installed new furnace and ac units. They were fantastic! Very friendly and knowledgeable.

Lori D · May 30, 2025 Customer Review

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Star Full Star Full Star Full Star Full Star Full

Thomas K. is great. Has serviced my furnace and installed a new water heater. Today he serviced my AC as part of my maintenance plan. Here are before and after pictures. Will always ask for Thomas and use Lindemann in the future.

Joan D · May 2, 2025 Customer Review

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Star Full Star Full Star Full Star Full Star Full

Thanks for keeping our house warm with your usual good service!

June Z · March 29, 2024 Customer Review

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Star Full Star Full Star Full Star Full Star Full

Our Bryant Evolution thermostat sent us a few error codes in January. I think they were caused by snow sliding off the roof onto the heat pump outdoor coil, blocking its fan, but I asked Lindemann to come check it out, and try to avoid a critical failure during bad future weather. We have an […]

Evan C · January 25, 2024 Customer Review

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Star Full Star Full Star Full Star Full Star Full

Your technician was knowledgeable , efficient and very congenial. I will call your company again and have already referred your company to friends. Thank You jobs are well done.

James N · January 23, 2024 Customer Review

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Star Full Star Full Star Full Star Full Star Full

Very professional and nice! They truly care about getting back to you on a timely matter! I will recommend Lindemann to family and friends! Thank you again

Albertina F · January 15, 2024 Customer Review

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Star Full Star Full Star Full Star Full Star Full

Thomas did a great job installing our water heater. It was not working as well as we would like. Thomas came out the next business day and checked on the unit and installed a separate disconnect for free. I will be giving them more business in the future.

Carol D · November 6, 2023 Customer Review

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Star Full Star Full Star Full Star Full Star Full

What an awesome team of professionals. They not only pointed out some issues, but did a great job during inspection and Tune-up. On top of it, he noticed my sump pump was not working, which saved me a future headache. If you are looking for a great team to work with regardless HVAC and chimney, […]

Anthony B · October 31, 2023 Customer Review

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Crystal Lake, Illinois Services

Heating & Cooling

Heating & Cooling

Trusted by Our Customers in Crystal Lake, Illinois

Crystal Lake’s cold, snowy winters and humid summers mean year-round strain on HVAC systems. Timely maintenance and forward-thinking upgrades ensure comfortable interiors without inflated bills.

  • Seasonal Checkups – Service heating systems before winter and AC units before summer.
  • Energy-Efficient Upgrades – High-SEER ACs and efficient furnaces curb costs during extremes.
  • Thermostat & Zoning Controls – Focus conditioning on occupied zones for better energy management.
  • Indoor Air Quality Enhancements – Filtration or humidity solutions reduce allergens, mold, and dryness.
  • Upgrading Older Systems – Replace outdated equipment for fewer breakdowns and improved comfort.
  • Allergies & Air Quality – Regular filter changes address dust, pollen, and pet dander.
  • Emergency Repairs – Keep a reliable HVAC contact for prompt service in harsh weather.
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