Direct Improvements is a family-owned HVAC company based in Chicago, IL, serving both commercial and residential clients. They provide a range of services including installation and repair of air conditioning, furnaces, heat pumps, and boilers. The company focuses on improving system performance and offers tailored solutions to enhance comfort and efficiency. Their approach emphasizes professionalism, integrity, and respect while aiming to streamline the improvement process and reduce costs.

PhD Heating & Cooling is an HVAC company based in Chicago, IL, specializing in the installation and repair of air conditioners, furnaces, boilers, mini-splits, and water heaters. With over a decade of experience and a strong engineering background, the company emphasizes precision and quality in every project. Their team of licensed and insured technicians follows a detailed installation standard to ensure safe operation and long-term reliability. PhD Heating & Cooling provides comprehensive services including system sizing, equipment selection, and emergency repairs, focusing on delivering lasting comfort and safety to homeowners.

Ibbotson Heating Co is a family-owned HVAC company serving Chicago, IL, and the surrounding northwest suburbs. Established in 1946, the company offers installation and repair services for air conditioners, furnaces, heat pumps, and other heating and cooling systems. As a Lennox Premier Dealer and Authorized Carrier Dealer, Ibbotson Heating Co provides high-quality equipment backed by experienced NATE-certified technicians.

Flow-Rite Heating & Cooling is a family-owned HVAC company serving Chicago, IL, and nearby areas including Wood Dale, Itasca, and Addison. They offer a full range of heating and cooling services such as air conditioner and furnace installation, repair, and maintenance. Their capabilities include indoor air quality improvements like duct cleaning and smart thermostat installation. With over 10 years of experience, Flow-Rite provides 24/7 emergency service to address urgent heating and cooling needs any time of day or night.

High Tek Corp - Heating & Cooling is based in North Riverside, IL, serving the Chicagoland area with over 25 years of HVAC experience. They provide a full range of services including installation, repair, and maintenance of heating and cooling systems for both residential and commercial properties. Their expertise covers ductless systems, central air, boilers, and smart thermostat installation. High Tek Corp also focuses on improving indoor air quality and offers 24/7 emergency services to address urgent HVAC needs.

R.H. Witt Heating & Sheet Metal is a family-owned HVAC and electrical service provider based near Chicago, IL. They serve Glenview and the surrounding North Shore and Northwest Suburbs, including Northbrook, Highland Park, Glencoe, Winnetka, and Wilmette. Their services include air conditioning and furnace repair, HVAC installation, indoor air quality solutions, and electrical work. The company is a Carrier Factory Authorized Dealer and offers specialized capabilities such as Aeroseal duct sealing and custom sheet metal ductwork fabrication. Established in 1966, R.H. Witt Heating & Sheet Metal provides 24/7 emergency service to support year-round comfort for residential and commercial customers.

Polar Heating & AC is a family-owned HVAC company serving Chicago, IL, and surrounding suburbs. They specialize in the installation, repair, and maintenance of air conditioners, furnaces, and boilers for both residential and commercial customers. With over 60 years of experience, Polar Heating & AC offers certified technicians who provide services including HVAC tune-ups, same-day installations, and 24/7 emergency repairs. Their service area covers Chicago and nearby communities such as Orland Park, Aurora, Joliet, and parts of Northwest Indiana. The company emphasizes customized heating and cooling system designs and offers one of the longest warranty protections in the industry.

Emerald Heating & Air Conditioning Inc. is a full-service HVAC company based in Chicago, IL. They provide a wide range of heating and cooling services including repair and installation of air conditioners, furnaces, heat pumps, boilers, and mini splits. The company also offers HVAC tune-up and preventative maintenance services to help customers maintain their systems efficiently. Emerald Heating & Air Conditioning Inc. aims to deliver quality work on schedule and within budget while addressing all client needs.

Safe Heating & Cooling Inc. is a family-owned HVAC company serving Chicago, IL, and the broader Cook County area since 2008. They provide a wide range of heating and cooling services including air conditioner, furnace, heat pump, and mini split installation and repair. The company also offers duct cleaning and indoor air quality services to help maintain cleaner and healthier home environments. Safe Heating & Cooling is experienced in installing radiant floor heating systems, which provide even warmth throughout a home. Their service area includes many communities across Cook County, reflecting their local focus and commitment to the region.

D's Air & Heating, INC is an HVAC service provider based in Chicago, IL, offering heating, air conditioning, furnace and boiler maintenance, and professional duct cleaning services. They serve Chicago and the surrounding suburbs with a focus on improving indoor air quality and energy efficiency. The company uses advanced camera analysis for thorough duct cleaning and state-of-the-art diagnostic tools to identify HVAC issues. Established in 2009, D's Air & Heating, INC has completed thousands of projects and serves a broad customer base in the area.