Air Conditioning & Heating

Repair | Install | Service

The one thing in common with all heating and cooling systems is that they need to work when you need them most. Our licensed and factory trained technicians offer HVAC repair and installs that are conscious of your budget and delivered with quality customer service.

Based out of Carpentersville Illinois, Three Oaks Heating and Cooling has provided over 25 years of experience to home owners for their air conditioning and heating repair needs. Call us today to setup a service appointment.

Call Today! (224) 558-5051

Air Conditioning Repair


For affordable and dependable air conditioning repair, Three Oaks Heating and Cooling is second to none. Our licensed technicians lead the industry in AC repair while offering exceptional customer service. Restore the comfort in your home today with our AC repair service.

Furnace Repair


A disabled or poorly operating heater in Carpentersville, IL can be devastating on you and your family during our winter months. Discomfort and health risks are at stake. Three Oaks can send out a factory trained technician to diagnose and repair your heater today.

Heating and Air Installs


Is it time to install a new furnace or air conditioner? Three Oaks can provide a free in home inspection and estimate to install your new comfort system. We can help determine the best system within your budget that will be much more efficient and lower your energy consumption.

HVAC Maintenance


Preventative maintenance is the key to the longevity of your equipment. This is also how you stop small problems before they become BIG problems. Along with improving the lifespan of your AC and Heater, regular maintenance will keep things running efficient while lowering operational cost.

HVAC Repair EPA Certified

Factory Trained. EPA Certified. Over 25 Years of Service.



HVAC Repair with Three Oaks

Your Air Needs to Work 7 Days a Week. So We Do Too!

In Carpentersville Illinois, HVAC repair can’t always wait. Our hot and humid summers and cold and frigid winters requires your HVAC system to work when you need it most. The comfort of your home is a priority and needs to be treated as such. Three Oaks can fix it any day of the week! With a quick diagnosis of your heating or cooling system, Three Oaks can you have back up and running in no time.

Surprises with HVAC Repair? Not Here.

Nobody likes unpleasant surprises. Three Oaks provides up front pricing with a detailed explanation of what repairs are needing to be done. Our inspections are never embellished and you’ll hear nothing but the truth from us.

If we identify an unsafe or unsalvageable situation that would require a replacement system, we can provide a free estimate on the most compatible and efficient unit within your budget. Our certified and factory trained technicians can walk you through your options for HVAC repairs and replacements, leaving you confident and educated.

Keeping Your HVAC System Maintained

Often times many problems can be avoided with simple maintenance. Completing routine maintenance as little as twice a year can have a positive effect on the life expectancy of your HVAC system while dramatically improving its efficiency. Improving the efficiency of your heating and cooling system will also reduce operational cost each month. This cost effective solution is guaranteed to keep things running in tip-top shape.

Schedule your service today.

We’re Qualified!

25+ years of service in McHenry County

Our work is guaranteed, 100%

We are fully licensed and insured

Free estimates on system replacements

7 day a week service available

30 day labor warranty on all repairs

Honest, fair and upfront pricing


Schedule An Appointment