Heating and Cooling in Crystal Lake & Surrounding Areas

Serving McHenry, Lake, Kane & Cook County!

Expert Heating & Cooling in McHenry, Lake, Kane & Cook County!

With more than 50 years of professional experience, our team WeatherWise Heating & Cooling has been providing quality heating and cooling services to Crystal Lake and beyond. Our family owned and operated business is committed to providing you the best HVAC equipment and repairs to stay comfortable in Illinois. Our highly skilled technicians can fix any of your HVAC problems on the same-day at an affordable price. Whether you are a homeowner needing heating and air repairs, or a commercial business that needs help with their complex HVAC system, we are here to fix it. We also offer financing on approved credit and maintenance programs to prevent costly air conditioning and heating repairs.

Trusted Crystal Lake HVAC Repair & Installation Professionals

When you choose WeatherWise to be your HVAC company, you will receive quality service at an affordable price. We are committed to serving the best comfort in the McHenry, Lake, Kane and Cook county since 1985.
Our Service Plan WeatherWise Heating & Cooling
If there is a way to help you save, we do it! Check out our homeowner service plan, save up to 30% off all HVAC repairs, annual air conditioning and furnace tune-ups. In addition, we have member only pricing included. Learn more today.
Hot Deals at WeatherWise Heating & Cooling
At WeatherWise Heating & Cooling, we don't want money to get in the way of our customers home comfort. That's why we offer monthly coupons and promotional financing with approved credit. With us, you can gain the comfort you desire that is budget friendly. Find out more about our Financing Programs and see what works best for you.


For over 35 years, WeatherWise Heating & Cooling has been providing same day, heating and cooling services to customers in Crystal Lake and surrounding areas.
Whether you need help with an air conditioning repair, furnace repair, full hvac replacement, mini ductless systems or indoor air quality, you can always count on WeatherWise to get the job done. Located in Crystal Lake and serving the greater areas. 
We repair most heating and air makes and models and are happy to speak with you on the phone, free of charge, should you have any questions. We provide reliable, unmatched HVAC service and innovative products from leading manufactures like Carrier®.