Commercial HVAC services in Buffalo Grove and surrounding areas

From rooftop units to ductless systems, Next Generation Heating and Cooling delivers expert commercial HVAC installation, repair, and maintenance across Buffalo Grove and nearby communities. Available 24/7 to keep your business running smoothly.
Happy senior customer after HVAC serviceSmiling woman sharing positive HVAC service review.Satisfied customer of NG Air Conditioning
Google Rating
5.0
HVAC technician repairing rooftop commercial air conditioning system.

Why businesses in Buffalo Grove trust our commercial HVAC experts

Delivering top-rated commercial HVAC services for your business
15+ years of commercial expertise
With decades of experience, our team knows how to handle complex HVAC systems for offices, warehouses, restaurants, and retail spaces.
Licensed and insured technicians
Your business is protected and serviced by highly trained professionals who get the job done right.
Transparent pricing
No surprises. Our diagnostic fee is $149 and waived with repairs, and we provide clear estimates before any work begins.
Guaranteed work
Every job is backed by a 6-month labor warranty and 1-year parts warranty for peace of mind.
All major brands serviced
From Trane and Carrier to Lennox, York, Rheem, and more, we repair and install all leading HVAC equipment.
Local service you can trust
Based in Buffalo Grove, we proudly serve nearby businesses across Lake and Cook County with fast response times and reliable solutions.

Our commercial HVAC services in Buffalo Grove

From new system installations to emergency repairs, Next Generation Heating and Cooling delivers reliable, cost-effective HVAC solutions designed for commercial properties of every size.

Commercial HVAC Repair and Maintenance

Technician performing maintenance on commercial HVAC unit
Commercial HVAC repair
When your HVAC system fails, it can disrupt operations and affect comfort. We repair all major brands and models, diagnosing problems quickly and providing lasting solutions.
Emergency HVAC repair
HVAC issues don’t wait for regular hours—and neither do we. Our team is available 24/7 for emergency commercial HVAC repair to minimize downtime and prevent costly disruptions.
Preventive maintenance plans
Regular maintenance extends system life and prevents costly breakdowns. We offer tailored maintenance contracts that include inspections, cleanings, and tune-ups to keep your HVAC system in top condition.
Rooftop unit repair
If your rooftop unit is underperforming or making unusual noises, our technicians can quickly diagnose and repair the issue, restoring proper airflow and performance.
Filter replacement services
Clogged filters reduce efficiency and indoor air quality. We provide scheduled filter replacements to keep your HVAC system clean, efficient, and healthy for building occupants.
Freon recharge & leak detection
Low refrigerant levels can cause poor cooling and damage your system. Our technicians provide accurate leak detection and professional Freon recharge services to restore proper cooling power.

Commercial HVAC Installation Services

Technicians installing a rooftop HVAC unit
Commercial HVAC system installation
We provide full system design and installation services to meet the demands of office buildings, restaurants, warehouses, and other commercial spaces. Our team ensures every system is properly sized, energy-efficient, and built to deliver long-term comfort.
Rooftop unit installation
Rooftop HVAC units free up indoor space while offering consistent performance. We install high-quality rooftop systems that improve airflow, simplify maintenance, and keep your building running smoothly.
Packaged unit installation
Packaged HVAC systems combine heating and cooling in one compact unit—perfect for businesses that want efficiency without sacrificing performance. We install packaged units tailored to your building’s layout and energy needs.
Ductless system installation
Not all commercial spaces are equipped for traditional ductwork. We install ductless mini-split systems that allow for zone-specific climate control and reduced energy waste.
New ductwork installation
Proper ductwork is critical to an efficient HVAC system. Our experts design and install new ducts to optimize airflow, improve comfort, and reduce energy bills.
Ventilation system installation
Healthy indoor air is vital for employees and customers. We install commercial ventilation systems that remove pollutants, balance humidity, and improve overall indoor air quality.
HVAC technician repairing an outdoor air conditioning unit.

Your trusted commercial HVAC contractors in Buffalo Grove

At Next Generation Heating and Cooling, we know that keeping your business comfortable isn’t just about temperature—it’s about productivity, safety, and customer satisfaction. With over 15 years of hands-on experience, our team specializes in commercial HVAC installation, repair, and maintenance for offices, retail stores, warehouses, restaurants, and more.
We combine technical expertise with responsive service to minimize downtime and maximize efficiency. Whether you need a brand-new rooftop unit, emergency repair at 2 AM, or a preventive maintenance plan to extend the life of your system, our licensed and insured technicians have you covered.
Our reputation is built on reliable work, transparent pricing, and guaranteed results. That’s why businesses across Buffalo Grove and the surrounding areas trust us to keep their heating and cooling systems running smoothly.

Hear from businesses we’ve helped

Real feedback from business owners who rely on our commercial HVAC expertise.
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Mark P.
5.0

Our furnace went out and Vitally and his team quickly diagnosed the issue, presented solutions, and fixed the problem. We ended up getting a new furnace, so I called around for quotes and theirs was still the best. Vitally spent at least 30 mins on the phone talking us through the options and specs. I’m really pleased with this group. Very nice, trustworthy and easy to work with. They even lent us a space heater to use in the meantime.

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Ainel A.
5.0

The AC unit stopped working. Vitaliy came promptly on time, he communicated with me every step of the way from the moment he left his office.He is very tidy, professional and uses great ways to explain the customer what the issue is. He did not try to sell me a completely new system, he fixed the exact part that needed help. Vitaliy was also available on a very short notice, we did not have to live for a week in misery.I will definitely refer his company to everyone I know.

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Tricia C.
5.0

Great company. We have used them twice now and are extremely happy with their honesty and work. Their pricing is very fair and I feel very comfortable referring them for any HVAC repairs. They definitely saved us from freezing during this cold snap and fixed our unit quickly and at an affordable price.

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David L.
5.0

I called a number of companies and thankfully Next Generation was able to come out on the same day. Our technician Vitaly Was very professional and informed me of everything along the way. I have a weird arrangement where my air conditioner is on the second floor deck of our walk up townhouse. Without having to be asked, Vitali and his teammate put on shoe covers. He diagnosed a problem quickly and did the repair and was out of our home in under 30 minutes. It was a pleasure to work with Next Generation, and I recommend them without reservation.

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David S.
5.0

I will certainly be using Next Generation Heating and Cooling again. They were quick to find the issue with my A/C unit, and had it up and running in no time. Very courteous, friendly and professional. Definitely recommend.

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(ASC)
5.0

Absolutely amazing service, very knowledgable and very responsive. Fair pricing, great service cannot ask more from a team. Thank you Vitaly, Val and Jey for all of your support. I look forward to working with you on many more projects residential and commercial !

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Ruslan H.
5.0

I had a fantastic experience with Next Generation Heating and Cooling! From the moment I called for a repair, the customer service was top-notch. The technician who came out to fix my heating system was professional, knowledgeable, and efficient. They were able to diagnose and repair the issue quickly, and the cost was very reasonable. I was also impressed by the cleanliness of their work and the respect they showed for my home. I would highly recommend this company to anyone in need of HVAC services. Thank you for a job well done!P.S. Don't forget to check your air filter.

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John K.
5.0

Next Gen installed a new air conditioner and everything went very smoothly. They arrived timely (even early), were very knowledgeable about the product and reasonable in price. I would not hesitate to hire then again for any future needs.

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Anastasia K.
5.0

Val was able to stop by at Saturday to fix our transe unit. Coil was dirty and you can see on picture how clean it is now. Also he added refrigerant and give us advice how to maintain our AC. Affordable and highly reliable! Thank you Val!

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Karen H.
5.0

Prompt response! Able to fit me in same day. Irene very responsive. Neal came early afternoon. Diagnosed Problem quickly. Whirlpool refrig freezer motor fan not working or cooling. Neal bought new part from shop and installed it same day so food didn't spoil. Reasonable price with senior discount. Would highly recommend them. Thank you. Karen H.

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Kevin S.
5.0

Our furnace was making a loud concerning noise whenever it kicked on. Called next generation and within 10 minutes they called me back to set up an appointment and were out at the house within an hour. They quickly assessed the furnace, found the issue and replaced the necessary part. Highly recommend!!

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Ruslan K.
5.0

I recently had the pleasure of having Val from Next Generation Heating and Cooling install a new furnace and AC system in my home, and I couldn't be more satisfied with the results. From the initial consultation to the final installation, Val was incredibly professional and knowledgeable.Overall, I highly recommend Next Generation Heating and Cooling, and especially Val, for anyone in need of HVAC services.

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Sandy L.
5.0

Val and his team were fantastic! A/C stopped working on Wednesday. Val was here at 11 am to provide an estimate. He presented several different options and was responsive to my input. Offered 0% financing for 24 months with Wells Fargo. It is now Friday afternoon at 3:30 pm and the new furnace and air conditioning units are installed and running. Clean up was perfect. Val gave me a complete explanation and review of the installation. Truly excellent service experience! I found them on Yelp and was hopeful for a good result, but they exceeded my expectations. Highly recommend!!

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Sandy L.
5.0

Next Gen did a great job helping us with our water heater repair. They were on time and helpful.

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Heather M.
5.0

Excellent customer service! They were prompt and knowledgeable and did an outstanding job.

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Tracy C.
5.0

The service gentleman, Jay, was very nice and easy to work with. He explained everything in great detail and showed us pictures and videos of the roof top units. It was a pleasure to have Next Generation Heating & Cooling come out and service our HVAC system. We look forward to working with them moving forward.

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Kevin H.
5.0

Recently purchased a home and worked with Next Gen to service my furnace. Jey and Vitaliy were both super responsive and are very knowledgable. Definitely recommend to everyone in need of HVAC support.

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David D.
5.0

Jey was very professional and personable! He went above and beyond our expectations and came out for a same day appointment.He fixed our Google Nest thermostat and also found some others issues with our furnace and humidifier that needed attention.We definitely will call and ask for him in the future for any HVAC issues we may have.!I would recommend this company to anyone needing HVAC service.

Most common commercial HVAC repairs and challenges we solve

Running a business means you can’t afford unexpected HVAC breakdowns. At Next Generation Heating and Cooling, we’ve seen it all—and we know how to fix it fast. Here are some of the most common issues we solve for commercial properties:
No matter the problem, our technicians respond quickly with expert diagnostics and guaranteed repairs, helping your business avoid downtime and costly disruptions.
Uneven heating or cooling
Hot and cold spots throughout the building often signal ductwork leaks, airflow problems, or system imbalances.
Frequent system breakdowns
Aging or poorly maintained systems can fail repeatedly, leading to costly downtime. We identify root causes and provide lasting repairs.
Strange noises or vibrations
Banging, rattling, or humming often point to motor, fan, or compressor problems that require immediate attention.
Poor indoor air quality
Dust, odors, and humidity imbalances can affect employees and customers. We solve ventilation and filtration issues to improve comfort.
Refrigerant leaks / low cooling output
If your AC isn’t cooling properly, it may need refrigerant recharge or leak detection.
High energy bills
Inefficient systems drive up monthly costs. Our experts restore efficiency through repair, tune-ups, or recommending modern replacements.
Rooftop unit malfunctions
As the backbone of many commercial buildings, rooftop units face wear and tear. We repair everything from electrical faults to airflow issues.

Service areas we proudly serve

Next Generation Heating and Cooling is based in Buffalo Grove and provides commercial HVAC installation, repair, and maintenance services to businesses throughout Lake and Cook County. Our fast response times and local expertise make us the trusted choice for companies across the region.
Buffalo Grove
Riverwoods
Highwood
Kenilworth
Wheeling
Northbrook
Lake Bluff
Highwood
Long Grove
Bannockburn
Glencoe
Wilmette
Highland Par
Lake Forest
Winnetka
Deerfield
If your business is located nearby but not listed, give us a call. We often serve additional surrounding areas.

Brands we repair and install

Our technicians are experienced with all major commercial HVAC manufacturers, ensuring fast, reliable service no matter what system your business uses. We carry common replacement parts and have the expertise to handle both older units and the latest high-efficiency models.
We service and install all leading brands, including:
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lennox ac icon
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goodman ac repair
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fujitsu ac repair
heil ac repair
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Frequently asked questions about our HVAC services

How much does a commercial HVAC service call cost?
Our diagnostic fee is $149 during regular business hours (Mon–Fri, 7am–6pm), and it’s waived if you proceed with the repair. For after-hours or emergency service, the fee is $249 and not waivable.
How often should commercial HVAC systems be maintained?
Most commercial systems should be inspected and serviced twice a year—once before the cooling season and once before the heating season. Preventive maintenance helps reduce downtime, lower energy costs, and extend equipment life.
Do you provide 24/7 emergency HVAC service for businesses?
Yes, we’re available 24/7 for emergency commercial HVAC repairs. Our technicians respond quickly to minimize disruption and keep your business operating smoothly.
What are signs my commercial HVAC system needs repair?
Common signs include uneven temperatures, loud noises, frequent cycling, higher energy bills, poor airflow, or unusual odors. If you notice any of these, it’s best to schedule a professional inspection.
Can you service rooftop HVAC units?
Absolutely. We specialize in rooftop unit installation, repair, and maintenance, a common choice for commercial buildings in Buffalo Grove and the surrounding areas.
What HVAC brands do you repair and install?
We work with all major brands including Trane, Carrier, Lennox, York, Bryant, Rheem, and American Standard. Our team is trained to handle both older systems and the latest high-efficiency equipment.
What is the typical lifespan of a commercial HVAC system?
With proper maintenance, most commercial HVAC systems last 15–20 years. Rooftop units may be closer to 15 years, while ductless and high-efficiency systems can last longer with routine care.
Do you offer commercial HVAC maintenance contracts?
Yes. We provide custom preventive maintenance plans designed around your building’s needs. Regular tune-ups help lower repair costs, reduce breakdowns, and keep your system energy-efficient.
How do I reduce energy costs with my commercial HVAC system?
Regular maintenance, upgrading to energy-efficient units, and installing programmable thermostats are the best ways to reduce utility bills. We can also recommend system upgrades that lower long-term operating costs.
What causes unusual odors from a commercial HVAC system?
Strange smells may indicate mold in the ductwork, dirty filters, overheating electrical components, or refrigerant leaks. We identify the source and resolve it quickly to restore safe, clean air.