







Rely on us for HVAC installations, repairs, replacements and maintenance
Our Local HVAC Company Serves Harvard, IL, McHenry County, IL, Walworth County, Boone County and Lake County
Find Reliable HVAC Services for Your Home and Business
We’re based in Harvard, IL and work throughout McHenry County
Is your heater on the fritz? Does your AC unit struggle to cool your entire house? Are you simply looking for a more energy-efficient option? Find the solutions you need at our local HVAC company.
CVC HVAC provides top-tier HVAC services in Harvard, IL and McHenry County, IL. From routine maintenance to quick repairs, we’ll keep your home or business comfortable year-round. Whether it's a seasonal tune-up for your air conditioner or a full-system replacement, you can rely on us.
Make us your go-to local HVAC company today.
Make us your go-to local HVAC company today.
We have a 35-mile service area that includes Harvard, IL, McHenry County, IL, Walworth County, Boone County and Lake County
Homeowners, property managers and business owners choose our fully licensed and insured team because…
3 reasons to choose CVC HVAC
We go beyond basic HVAC services
In addition to our HVAC services, we also do comprehensive electrical work. Our licensed and insured electricians can handle everything from routine electrical repairs to more complex work, such as lighting, wiring and panel upgrades. No matter the project size, CVC HVAC is committed to delivering reliable, cost-effective solutions.
Call 847-873-2529 to arrange for electrical or HVAC services.
Call 847-873-2529 to arrange for electrical or HVAC services.

5.0 Rated
Satisfied customers
Choose an HVAC Contractor With 10+ Years of Experience
Choose an HVAC Contractor With 10+ Years of Experience
CLIENTS REVIEW
See What Our People Are Saying
They are amazing! They were able to get to my house in 10 minutes and had my heat working within 15 minutes. Such a lifesaver.
Air conditioning went down, Carlos made time to come out on a Sunday and get us back up and running. Carlos is the most honest, straightforward HVAC technician I’ve ever dealt with! To me honesty means a lot, Carlos & CVC HVAC will be the only HVAC company I will ever use!
Blower motor went out on our furnace. Carlos came the next morning and diagnosed the issue and explained it to me. He was able to replace the motor and now it’s working great plus it wasn’t as expensive as I thought. I will be using them for my hvac needs and you should too! Thank you again for your hard work.
Just had him come out to service our AC on 6/17. Carlos and his son diagnosed and fixed it within minutes. He even explained what he was doing and showed me the problem. Shortly after I noticed it wasn’t getting as cool as I thought it should and he came back out at almost 9pm. Checked it out and assured me it just needed time. I can’t say enough good things about how he conducts business. Thank you again Carlos for going above and beyond!
Carlos the service technician was very punctual and professional also explained the issue in detail also took the time to diagnose clean and repair my furnace. I can say that I would not hesitate to ever call him for any and all future services. Definitely a 5 STAR service technician and company
We had a previous company do an annual inspection and tried to upsell us thousands of dollars, I called Carlos for a 2nd opinion and low and behold, the initial company basically sabotaged my unit, disconnecting tubes, circuts, turning off the gas. He came over immediately and diagnosed the issues. He was incredibly thorough and ethical. His prices are unmatched. I would recommend him to anyone and will continue to use his services.
They’ve done a great job for me on several jobs. Including a new furnace and a/c. Some electrical repairs and plumbing repairs. I highly recommend them. Always on time and always did what you he said he would do.
I am so grateful I found CVC HVAC! It's such a treat to work with someone who responds, shows up on time, is knowledgeable, helpful and honest. Their prices are fair as well and there isn't the pressure for an upsell.
I have found my new go to company for all HVAC and maybe plumbing concerns.
It's nice to be treated as a valued customer!
Thank you so much!!!