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Ductless Systems

Ductless systems offer an energy-efficient, flexible solution for heating and cooling individual rooms or entire homes, without the need for ductwork. At Althoff Home Services, we install and service ductless mini-split systems for homeowners in Crystal Lake and the surrounding Chicago suburbs. These systems are perfect for home additions, finished basements, older homes, or any space where traditional ducted systems aren’t practical.

  • Family owned since 1961
  • We provide quotes before performing service
  • 100% satisfaction guarantee

Ductless heating and cooling systems provide personalized comfort with zoned temperature control, quiet operation, and impressive energy efficiency. Whether you’re replacing inefficient window units or supplementing your current HVAC system, we’ll help you find the perfect ductless solution for your space. At Althoff Home Services, we combine expert guidance, top-tier products, and outstanding service to ensure year-round comfort, no ducts required.

Proudly serving the Crystal Lake area for over 60 years!

Ductless Heating and Cooling Explained

Ductless systems, also known as ductless mini split heat pumps, are a modern solution for homeowners who want efficient comfort without the need for traditional ductwork. At Althoff Home Services, we install and service ductless systems that provide both heating and cooling through a compact, versatile design. These systems consist of one or more indoor air-handling units connected to an outdoor condenser by a small conduit, making them perfect for homes where ductwork is impractical or unavailable.

Ductless systems are ideal for room additions, garages, basements, older homes, and any space where zoned temperature control is preferred. Because they don’t require ducts, installation is faster and less invasive than traditional HVAC systems. With quiet operation and easy-to-use remote or smart controls, ductless heating and cooling offers unmatched convenience and comfort. If you’re looking for a flexible, energy-efficient solution, ductless may be the perfect fit for your home.

The Benefits of Ductless Mini Split Heat Pumps

Ductless mini split systems offer several advantages over traditional heating and cooling methods. At Althoff Home Services, we often recommend ductless systems to Crystal Lake homeowners who want better control over their indoor comfort and energy use. One of the biggest benefits is zoned heating and cooling, you can independently control the temperature in different areas of your home, which reduces energy waste and keeps everyone comfortable.

These systems are also highly energy-efficient. Since there are no ducts to leak air, ductless units deliver more of the conditioned air they produce. This efficiency often translates into lower utility bills. In addition, ductless mini splits improve indoor air quality with built-in filtration and dehumidification. They operate quietly, are sleek in design, and require minimal maintenance. Whether you want to supplement your central system or replace outdated window units, ductless systems offer a smarter, more sustainable solution.

We Offer Full Ductless Services

At Althoff Home Services, we provide complete ductless services, from system selection and professional installation to repair and maintenance. We’ll start by evaluating your home’s layout and heating and cooling needs to recommend the best ductless system for your space. Our experienced technicians handle every step of the installation process with precision and care, ensuring optimal performance from day one.

Already have a ductless system? We also offer repairs and seasonal maintenance to keep your equipment running smoothly year-round. Our team is trained to work on all major brands and models, and we stand by our work with a 100% satisfaction guarantee. Whether you’re exploring ductless technology for the first time or need expert service on an existing system, Crystal Lake homeowners trust Althoff Home Services for dependable solutions and outstanding support.

What Are Other Homeowners Saying?

Top rated
Althoff Home Services4.8
Based on 1101 reviews
Gay Kottke
1 day ago
Knowledgeable and friendly during the service call. Answered all our questions and concerns.
Routine seasonal AC system checkup. Technician was professional and courteous. Checked everything and answered all of my questions. This company is competent from top to bottom, from the first point of contact,down to the guy that shows up. Very pleased, and would recommend!
William Sampson
3 days ago
Totally satisfied
Tiffany Schield
4 days ago
Great work, professional, very happy with service, Nick did a great job .
Prompt, courteous, friendly service. No dirt tracked in....leaves my home cleaned up....no messes. I've found them to be very reasonable (price wise) and I won't hesitate to recommend them.
Vince Siciliano
1 week ago
Scheduled furnace maintenance for both of our furnaces and humidifiers, and was very impressed with the service we received today. Our Technician, Nick, was very personable and knowledgeable. His attention to detail was very good, and he took the time to explain everything he was doing, any issues he found, and all services Althoff provides. What I liked best is thst Althoff didn’t just provide 1 service estimate but provided options so that you can choose based on your budget. I was very satisfied at the service we received from Althoff Services and would highly recommend to anyone looking for quality service.
John Cadwell
1 week ago
AC tune-up - very thorough.
Mary Foerster
1 week ago
It was a pleasure doing business with Althoff. I appreciated the professionalism and thorough care I received with everyone I came in contact with at Althoff.
Ryan Christensen
2 weeks ago
Althoff is always ready to assist with whatever problem we may have I can never imagine using anyone else.
Shabbir Kapadia
2 weeks ago
Good and clean work
Thank you Jim
Linda Haman
2 weeks ago
I am so glad to be working with Althoff for my heating, air conditioning, and plumbing concerns as well as maintenance of these units. Miost recently, Mike from the plumbing department completed the plumbing inspection of my home. His knowledge and ability to explain plumbing in terms I understood was so appreciated. I highly recommend him as well as Althoff in general.
Bob Rozycki
3 weeks ago
Yesterday we had our furnace, air conditioning unit, air filter system and whole house humidifier replaced. Alex Florita and Wiktor Kruzel were the two technicians who removed the old equipment and installed the new products. To say the installation was flawless, incredibly clean and perfectly done would be a gross understatement. These craftsmen did a fantastic job, were very careful in our home and answered all of our questions completely. We , as usual with Althoff, were totally satisfied. Today, Jesse Hernandez from Althoff came to us to replace our water heater. He was incredible. He was friendly, professional, and went way beyond my expectations. He answered every one of our questions, provided us with advice on how to best use the equipment and did an outstanding installation of our new tankless water heater. We have been customers of Althoff Home Services for over thirty years Over that time we have worked with many technicians and staff members to address our needs. I can say, without reservation, that all of these people met or exceeded our expectations. Jesse, Alex and Wiktor FAR exceeded those expectations. Jesse is an incredible technician. And what a truly nice person. Totally outstanding in every way. Bob and Sharon Rozycki
Gary Downing
3 weeks ago
I had a plumbing issue. I called and they had sent Mat out in a few hours and he fixed it was thorough and explained the cost to me and what he was doing. I would recommend this place to anyone needing plumbing service.
Karen Pieroni
4 weeks ago
I've never had such good service as Althoff brings. Exceeds my expectations every visit.
Donna Borman
4 weeks ago
We have been using Althoff Home Services for ALL of our plumbing, HVAC and electrical needs for many years now (after 2 bad experiences with another company). Althoff is a family owned & operated company and it shows in their professionalism, kind and courteous approach and the steps they take to make sure we feel like our job is their only priority. Their pricing is fair, work is thorough and absolute top-quality! Highly recommend!
Ginda Owens
1 month ago
Seasonal maintenance on boiler and hydroponic heating system was done, and water heater was checked and flushed. Excellent service. Thank you Brian!
Stash Stanton
1 month ago
On time arrival for a new Trane furnace installation. Technicians were polite, friendly and did an expedient professional installation. Cleaned up before they left. I was impressed as expected with Althoff Ind. installers. Thank you for a job well done!
Lyn Cablk
2 months ago
Altoff's service is always excellent. We've never been disappointed and our history with them goes back 28 years, ever since we moved to this community!
tiffany foreman
2 months ago
Mark was friendly, professional and thorough. He did a great job fixing and cleaning my AC unit. He took time to look everything over and made recommendations for services in the future. I appreciated his advice and attention to detail. I would definitely recommend him!
Ouzelfalls
2 months ago
I recently switched to Altoff Services to do my annual A/C and Heater maintenance. They came this week to do the A/C. they did a thorough job in testing my A/C's cooling efficiency. they tested refrigerant levels.They removed the outside unit's shroud and thoroughly cleaned the unit. This was the first time anyone did that. I was very happy with the work they did.
Lois
2 months ago
I was out of the state when my son texted about the water leak in the basement. Althoff responded promptly and resolved the issue. So happy with the service they provide!
Laura Frayn
2 months ago
My A/C stopped working due to an unusual problem. Edwin used excellent analytical skills to find the solution. He was professional, thorough, and an excellent communicator. I highly recommend Edwin and Althoff
Greg Vachon
2 months ago
We had new a/c compressor and attic fan unit installed in the spring. Team was efficient and did a great job. Completed just as stated. Electricity bill went from above average for neighbors to below average according to ComEd report. It has been a lot of savings (plus house is cool - old one wasn't working well). Technicians have been wonderful in ensuring working just right (Ryan Staral, thanks! ... Brian Pulaski, thanks!). The staff calling us for our maintenance check (free with install) were so polite and accommodating. Really stellar service!
Mark Palmer
2 months ago
Jon at Althoff was a lifesaver. Had a leak that several other companies were unable to fix. Jon had a great attitude and resolved my problem quickly. I will be using Althoff in the future.
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