(815) 232-4519

HVAC Professional Contractors Since 1991!

Your Indoor Comfort Specialists.


We're proud of our years of service to the Freeport, IL area and look forward to helping you with your air conditioning and heating needs.



Lemanski Heating & A/C


Lemanski Heating & A/C has been serving Northwestern Illinois since 1991. We offer a 24 hour emergency service 365 days a year if needed. NATE certified factory trained technicians are ready to serve you. We are a full service contractor offering new construction, remodeling, and repairs to most brands. We are a Chamber of Commerce member and operate a full sheet-metal shop for custom ductwork fabrications. Our team utilizes a computer assisted custom design & build system. We are licensed, bonded, and insured; offering high efficiency boilers, geothermal systems, air cleaners, and indoor air quality systems.