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30 Years
experience
Emergency
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Trusted HVAC Services in New Lenox, IL
Service II Inc. has been a trusted provider of heating, ventilation, air conditioning, and plumbing services since 1996. Our team of certified professionals serves residential and commercial clients across Chicago's Southwest suburbs, delivering reliable solutions tailored to individual needs. With decades of combined experience, we prioritize energy efficiency, customer satisfaction, and the use of high-quality parts and equipment. Our commitment to excellence is reflected in our 24-hour emergency service, personalized consultations, and dedication to staying at the forefront of industry advancements. We partner with leading brands like American Standard and Ecobee to offer cutting-edge systems that enhance comfort while reducing energy costs.

From routine maintenance to complete system installations, our approach combines technical expertise with a focus on long-term client relationships. We guarantee satisfaction through transparent communication, competitive pricing, and a proven track record of addressing complex HVAC challenges. Our leadership in the local market stems from consistent service improvements and a deep understanding of regional climate demands. As an established community business, we maintain active partnerships with organizations like TR Miller to better serve our clients. This enduring commitment to quality and innovation has made us a preferred choice for generations of homeowners and businesses.
Services
HVAC Installation Emergency Repairs Indoor Air Quality Smart Thermostats Plumbing Services System Maintenance Energy Audits Ductless Solutions Geothermal Systems Air Purification
Details
  • Year established: 1996
Highlights and features
  • We offer 24/7 emergency HVAC service since 1996
  • Our team uses ENERGY STAR certified equipment
  • We provide personalized system consultations
  • We guarantee satisfaction with quality parts
  • We serve residential and commercial clients
Services
HVAC Installation
We install complete heating, cooling, and ventilation systems tailored to property requirements. Our technicians work with ENERGY STAR certified equipment from brands like American Standard to ensure energy efficiency and long-term reliability. Each installation includes a consultation to determine optimal system sizing and configuration for maximum comfort and cost savings.
Emergency Repairs
Our 24-hour emergency repair service addresses urgent HVAC failures at any time. Certified technicians respond promptly to restore system functionality using diagnostic tools to identify issues with furnaces, air conditioners, and ventilation units. We maintain inventory of critical replacement parts for immediate repairs.
Indoor Air Quality
We improve indoor air quality through specialized filtration systems and purification technologies. Solutions include UV filtration, air scrubbers, and whole-home purification units that remove allergens, VOCs, and contaminants. Our Aprilaire and Aerus products address specific air quality concerns while enhancing HVAC system efficiency.
Smart Thermostats
We install and program smart thermostats like Ecobee models to optimize temperature control. These devices learn user preferences, adjust automatically for energy savings, and offer remote access via mobile apps. Our technicians ensure proper integration with existing HVAC systems for maximum efficiency.
Plumbing Services
Our licensed plumbers handle residential and commercial plumbing needs including pipe repair, water heater installation, and fixture upgrades. We use durable materials and modern techniques to fix leaks, improve water efficiency, and ensure code compliance for both emergency and scheduled service calls.
People
Jeff Williams
President
Jeff Williams leads Service II Inc. with over 25 years of HVAC industry experience. He oversees operations and client relations while maintaining active involvement in service delivery. His leadership emphasizes technical excellence and community engagement.
Questions
What HVAC services do you offer?
We provide installation, repair, and maintenance for heating, cooling, and ventilation systems. This includes emergency service, smart thermostat programming, and indoor air quality solutions.
Do you offer 24/7 emergency service?
Yes, our technicians are available 24 hours a day, 7 days a week for urgent HVAC repairs and system failures.
What financing options are available?
We offer the Wells Fargo Home Projects credit card with special financing terms for qualifying HVAC installations and major repairs.
Which areas do you serve?
We primarily serve Chicago's Southwest suburbs including New Lenox, Joliet, and surrounding communities.
What brands do you work with?
We install and service American Standard HVAC systems, Ecobee smart thermostats, Aprilaire air quality products, and Aerus air purification solutions.
Do you provide maintenance plans?
Yes, we recommend seasonal maintenance to extend system life and maintain energy efficiency. Our technicians perform comprehensive inspections and tune-ups.
Reviews (7)
Pat Sizemore
Dec 03, 2021 Report
Great service. Also installed new humidifier and air cleaner. Very prompt and friendly service Services: Thermostat installation, Heating system installation
Jim Boguslawski
Oct 31, 2021 Report
I had another excellent encounter with Service II. During my routine winter maintenance a problem was detected on my 21 year old furnace with an inducer fan motor. The Technician brought this to my attention along with potential future problems with the heat exchanger. Upon evaluating repair costs it was best to replace the furnace versus repairing it. A very reasonable replacement price for a new more energy efficient furnace was provided within 10 minute. The new furnace was installed promptly and professionally. With rising energy prices, the additional cost of replacement versus repair should be recovered in 5 -6 years.
Paul Loeffel
Aug 11, 2021 Report
Service II Inc. has serviced our heating and air conditioning needs since we moved into our house back in 1989. They have always been friendly and professional. We have since replaced our furnace and air conditioning with them and have never had an issue.
K. G.
Jul 21, 2021 Report
Excellent, quick, and knowledgeable service. Our technician taught us so much about what went wrong with our A/C and how he had to fix it. Would definitely recommend Service II. We will always use them. Services: HVAC repair, AC maintenance
Lisa Marie Schultz
Jun 23, 2021 Report
Our service tech Kraig is always kind and cordial! He answers any questions I may have and cleans up after himself. Scheduling department is very relatable. Service: AC maintenance
Sharen Trischank
Jun 10, 2021 Report
The serviceman was extremely informative about why it is necessary to maintain your A/C and furnace. I learned also the necessity to always replace the filter once monthly! Services: Heating maintenance, AC maintenance, Duct and vent cleaning, Heating system installation
Rene Nolan
May 07, 2021 Report
We had a wonderful experience here! Jeff, who handles communication regarding estimates and such, has excellent customer service skills and worked with us on every level to take good care of us. The techs were on time & professional, and our new furnace is working great. Thanks Service II team! We highly recommend this place! Services: Install thermostat, Heating system installation, Heating system maintenance, Heating system repair