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Command Service Center, Inc. has been family owned and operated for over 50 years of experience in HVAC repairs, replacements, and all major appliance repairs. We specialize in the complete comfort of our customers, from their HVAC systems to their water heaters, from the laundry room to the kitchen. We are fully equipped to install any residential or commercial heating, air conditioning, and air quality project and have experienced technicians repair or maintain all makes and models. Give us a call or fill out our contact form for a free estimate!

Polar Heating & Air Conditioning is a family-owned and operated business specializing in the installation, repair, and design of Air Conditioner, Boiler, and Furnace systems for residential and commercial customers. With over 60 years of experience in heating and cooling the Chicagoland area, we provide affordable heating and cooling services for homes and businesses in Chicago and the surrounding suburbs. Our certified HVAC repair professionals are available 24/7 and we can provide same-day installation services. We offer the longest warranty protection in the industry and will beat any written estimate from a legitimate competitor. Whether you are installing a new furnace, in need of an air conditioner repair, or are looking for a FREE estimate on a complete high-efficiency heating and cooling system, look no further than Polar.

Welcome to Omni Home Comfort! As a Lennox partner, we’ve been a trusted provider of top-notch heating, cooling, and indoor air quality solutions for the homes and businesses of Central Illinois. We service all furnaces, air conditioners, and ductwork cleaning needs in all areas located near Champaign-Urbana, Bloomington-Normal, Decatur, and Danville and surrounding areas. Whether it’s about maintenance, repair, or replacement, we have a comprehensive range of products and services to cater to your specific needs. We take immense pride in designing HVAC solutions that are not only customized to your lifestyle but are also well within your budget. Our mission is to ensure your home stays not only comfortable, but healthy, and energy efficient throughout the year, without you having to break your bank. With Omni Home Comfort, you can trust us to deliver nothing but the best when it comes to your home health, safety, and comfort!

Precision Today is a local business providing plumbing, heating, cooling, and electrical services. With a commitment to customer satisfaction and a team of experienced professionals, they aim to provide top-notch solutions for their clients. Their services include plumbing inspection, repair, and installation, as well as heating and cooling maintenance, repair, and installation. They also offer electrical services, including repair, installation, and maintenance. With multiple office locations in Illinois, Precision Today is dedicated to serving the local community.

Efficient Heating & Cooling is a locally owned furnace repair, air conditioning repair, and HVAC company serving McHenry, Lake, and Cook Counties. We have been in the HVAC industry for over 30 years and pride ourselves on providing fast, friendly, and reliable service. Our team of knowledgeable and experienced technicians are available 24/7 to provide emergency services and ensure that your home or business is always comfortable and well-maintained. We offer a range of services, including furnace repair, air conditioning repair, indoor air quality, and smart thermostats. We also provide free estimates and warranties on new unit installations. Our goal is to provide the most efficient HVAC contractor in the Chicagoland area, and we are committed to exceeding our customers' expectations.

Baikal Mechanical is a top manufacturer specializing in retrofits of old commercial HVAC systems. Our HVAC engineering solutions for commercial and industrial applications are energy efficient and provide operational savings. We offer a wide range of products and services, including custom air handling units, exhaust fans, cooling towers, and more. Our team of experienced engineers is dedicated to providing our clients with the highest quality products and services. We are committed to exceeding your expectations and providing you with a comfortable and efficient HVAC system. Baikal Mechanical's commercial HVAC systems are designed to meet the unique needs of each client. We offer a modular design that allows us to customize our systems to fit your specific requirements. Our systems are also energy efficient and environmentally friendly. We are committed to providing our clients with the best possible solutions for their HVAC needs. Our team of experienced engineers is dedicated to providing our clients with the highest quality products and services. We are committed to exceeding your expectations and providing you with a comfortable and efficient HVAC system.

CHICAGOLAND HVAC is a proud provider of HVAC services in North Chicago Land, NW Suburbs, and West Chicago Land. With over 15 years of experience, our team of licensed and insured technicians is dedicated to delivering exceptional service, quality, and value to our customers. We offer a range of services, including installation, replacement, and repair of HVAC systems, seasonal maintenance, improvement of indoor air quality, electrical repairs, gas leak repair, and carbon monoxide detection. Our mission is to provide an exceptional experience, with fast response times, competitive prices, and a commitment to serving our customers with quality and value. We're passionate about delivering an exceptional experience, and our customers love us for our timely, quality, friendly service and honest cost estimates.

With over 25 years of dedicated service in Hillside, IL, Square HVAC is your reliable partner for AC, furnace, and appliance repairs. Established in 1999, we excel in air-conditioning system installations, ensuring your comfort year-round. Our experienced team swiftly addresses AC or furnace issues, from peculiar noises to decreased performance. We also offer skilled appliance repair, ensuring your household runs smoothly. Trust Square HVAC for quality service and expertise in all your HVAC and household needs. Our company provides a full spectrum of work of any level of complexity. Our team consists of highly qualified professionals, who have been in the industry for no less than 25 years. We have gained comprehensive knowledge while decrypting the most complex technical and organizational tasks, what allows us to provide you with the best service. Our vision is to create a better everyday life for many people.” That’s aspirational, short and to the point. More than that, it sets the tone for the company and makes it clear that they’re in the market.

A Tradition of Excellence for over 71 years in Chicago and surrounding areas! Schedule Service Call today to schedule a service call or to request a free estimate on new equipment. Open Monday-Friday. Save Over $10,000 $129 Tune-UP Maintenance Special Financing Available. 4.9Based on 653 reviews. Heating, Air Conditioning, Financing, Maintenance, HVAC Contractor Chicago, IL | AC Service Northbrook, IL | AC Company Lincoln Park, IL. Family owned and operated, Guardian Heating & Cooling Service specializes in residential and commercial HVAC services in Chicago, IL and surrounding areas, providing customized solutions to everyday challenges. We are large enough to handle your needs, and small enough to care. Contact us at 312-818-2840, speak with a knowledgeable and friendly representative of our staff, and let us help you improve the comfort, health, and control over your indoor environment. Through industry-leading equipment and skilled workmanship, we deliver results you can trust.

State Automatic Heating and Cooling has been serving the Fox Valley for almost 100 years. We pride ourselves in providing a comfortable, healthy, and efficient indoor air environment for our all of our families’ homes and businesses. With an average tenure of over 23 years, our skilled union technicians will help you assess your needs to achieve your goal of total indoor comfort. We are a family-owned business since 1929 and have built a reputation for outstanding customer service and reliable heating and cooling solutions.