NextGen Mechanical

Residential & Commercial HVAC Contractor
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About Us

NextGen Mechanical has over 15 years of experience servicing both residential and commercial properties in the Chicagoland area.


We strive to provide the BEST customer experiences. (We mean it! Without you, our customer, our business wouldn’t exist!)


NextGen Mechanical offers a number of services from AC & Furnace installation and repair to Indoor Air Quality Systems & Ductless Systems.


Don’t waste time traveling to the store for air filters, order directly from us to keep your system running at peak efficiency.

The Next Generation of Mechanical Services

Here, You Are Always Part of the Family.

With over 15 years of experience, we have been servicing commercial and residential properties in the greater Chicagoland area. We are a family-owned business, and we treat our customers like family.

We strive to provide the BEST customer experiences. We mean it! Without you ‘our customer’ we wouldn’t exist.  Our expectation is to go above and beyond for you, that is our commitment to our customers.

Our Core Values: Dependability, Ethics, Honesty, Integrity, and the best treatment for our customers.



Order Replacement Air Filters

Air Filter ReplacementIs it time to replace your air filters? Use our online ordering portal to locate, order, and schedule the purchase of your next air filter. Let NextGen help you keep the air clean in your home or office!

Ring in 2023 with a 15% discount on your filter purchases when you use coupon code: NEXTGEN2023

Jason Chmielecki, Owner

Jason Chmielecki, Owner

EPA Certified, NATE Certified

We are a family-owned business, and we are here to help make sure you are comfortable in your home.

We take the time we need to make sure our customers have a quality product and not be in a hurry to just get the job done.

Better Business Bureau
Bradford White Water Heaters
North American Technician Excellence

Our Mission

Honesty is Our Best Policy.

Our expectation is to go above and beyond by being diligent and committed to our customers (who are our family). If you aren’t satisfied, then we have not done our job and will do whatever it takes to make it right!

Learn More

We offer a Wide Range of HVAC Services

Featured HVAC Services

Air Conditioning

Don’t sweat in your own home, install an efficient air conditioning system to keep your home  comfortable.


Boilers can be an efficient way to warm your home, but when they break you need an expert that can help.


Keeping your system and ductwork clean is important for healthy air and an efficient system.


Make sure your furnace is ready for winter, and upgrade before the Chicago winters are in full force.


If you are experiencing issues with your furnace or AC, let us help you with the repairs your system needs.

Ductless Mini Splits

Ductless Mini Split Systems offer a good way to heat and cool areas where ductwork is not an option.

Offers & Financing

Seasonal Special

View our special offers.


Is money tight? Do you need help? Good credit or bad credit We have you covered! We have partnered with FTL Finance to provide loans from 3 months to 120 months! We also provide repair financing too!

Client Testimonials

The best feeling we get is praise from our clients. Below are just a few of the great responses NextGen Mechanical has received from happy customers.


We had Jason referred to us after having had a bad experience with another company. He came right in and found the root of the problem, immediately. His honesty and thoroughness is utimately what won our business. The pricing was in line and we have since used him for our regularly scheduled fall and spring tune ups. We highly recommend this family owned company for any heating or ac needs.

Brian Koski

Jason and his awesome team were very careful to install super tidy ductwork and keep the space looking clean and organized. Jason is very knowledgeable and helped us to sift through all of the available choices and make a great decision about the equipment we installed. Very happy with NextGen and will be using them again in the future.

Caitlin Everett

What a great experience. I had NextGen come over for fall cleaning and Jason took a look at our boiler and unique heating system. We have had multiple companies (large and small) walk through and tell me we were fine, but he was able to diagnose and properly propose a solution for the heating of my basement as well!
Very responsive, very professional, and highly-skilled. I will be recommending NextGen to all my friends and family.

Christopher Brown

Jason did a great job repairing my furnace. He came out and found multiple problems with my furnace. He ordered the parts and made the repairs within a couple days at a very fair price. I highly recommend Jason and NexGen Mechanical.

Terry Smith