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Wi-Fi / Smart Thermostats

Upgrading to a Wi-Fi or smart thermostat is one of the easiest ways to boost comfort, improve energy efficiency, and take control of your home’s HVAC system. At Althoff Home Services, we help homeowners in Crystal Lake and the surrounding Chicago suburbs choose and install the ideal thermostat for their needs. Our customers appreciate the way we combine modern technology with trusted service values.

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

Whether you want remote access, learning features, or zoning capabilities, we’ll help you find the right thermostat and ensure it’s installed correctly for optimal performance.

Proudly serving the Crystal Lake area for over 60 years! 

How to Know It’s Time to Upgrade Your Old Thermostat

Many homeowners overlook the impact an outdated thermostat can have on their comfort and energy bills. If your current thermostat is non-digital, lacks programming options, or requires constant manual adjustments, it’s probably time for an upgrade. At Althoff Home Services, we help Crystal Lake homeowners modernize their HVAC controls with Wi-Fi and smart thermostats that offer greater convenience, accuracy, and efficiency.

Older thermostats often result in uneven temperatures, frequent system cycling, and wasted energy. They simply can’t match the precision or flexibility of today’s digital solutions. If you find yourself constantly fiddling with the settings or forgetting to adjust the temperature when you leave home, a new thermostat can make a big difference. Upgrading your thermostat is a small investment that pays off with better comfort control and reduced energy usage, all without replacing your entire HVAC system.

The Difference a Wi-Fi Thermostat Can Make

A Wi-Fi thermostat gives you the power to control your home’s heating and cooling from anywhere using your smartphone, tablet, or voice assistant. At Althoff Home Services, we install high-quality Wi-Fi thermostats that connect seamlessly to your existing HVAC system, giving you the flexibility to manage comfort settings remotely or on a schedule that fits your lifestyle.

Wi-Fi thermostats allow you to adjust temperatures on the go, set up daily or weekly programs, and receive real-time alerts about system performance. This level of control helps reduce energy waste and can lead to noticeable savings on your utility bills. They also offer an intuitive interface that makes it easy to track usage and fine-tune your preferences. Whether you’re on vacation or just headed home from work, a Wi-Fi thermostat helps ensure your home is always at the perfect temperature.

What’s So “Smart” About a Smart Thermostat?

Smart thermostats take everything great about Wi-Fi control and elevate it with intelligent features that learn your habits and adapt automatically. At Althoff Home Services, we recommend smart thermostats to homeowners who want effortless comfort and energy savings without constant adjustment. These systems use motion sensors, scheduling algorithms, and even local weather data to optimize your home’s climate based on your lifestyle.

Many smart thermostats can also integrate with home automation systems, voice control devices like Alexa or Google Assistant, and energy-saving programs from utility providers. Over time, they learn when you’re home, when you’re away, and what temperatures you prefer, adjusting accordingly to keep you comfortable and efficient. With professional installation and setup from Althoff Home Services, your smart thermostat becomes a powerful tool that improves comfort, saves money, and brings your HVAC system into the modern age.

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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