High Velocity AC Repair, High Velocity HVAC Installation & High Velocity Heating ServiceMorton Grove, IL, Evanston, IL, Lincoln Park, IL, Skokie, IL, Chicago, IL & Niles, IL

Unico Products Chicago, IL | High Velocity AC Repair Niles, IL | Unico HVAC Evanston, IL


If you’re looking for central air conditioning and heating without a huge, messy teardown project, consider High Velocity HVAC. Designed for non-invasive retrofit into older, vintage homes, or anywhere you’d like to avoid conventional ductwork, the installation avoids the need to gut your residence. Rather than a traditional duct system, narrow, flexible tubing snakes through existing walls, ceilings, or even floors and small diameter vents incorporate beautifully into any decor. While the equipment is compact, the level of cooling and heating is exceptionally powerful.

Call on us for prompt high velocity HVAC system services!

Guardian Heating & Cooling Service brings whisper quiet, wonderfully efficient high velocity heating and cooling to homeowners in Chicago, IL and surrounding areas. Our factory trained, NATE-certified professionals design and install a system perfect for you, ensuring very evenly distributed comfort. Based on the principle of aspiration, the equipment creates a gentle suction that draws the room air into the stream of conditioned air, avoiding drafts and temperature stratification. The temperature will vary no more than two degrees from room to room or floor to ceiling.

Expert high velocity HVAC system installations in Chicago, IL and surrounding areas!

Guardian Heating & Cooling Service partners with such widely-recognized brands as Unico and Carrier to offer rewarding options and unmatched features. Family owned and operated, we are large enough to handle your needs and small enough to care. Contact Guardian Heating & Cooling Service at 312-818-2840 to hear more. We provide expert and affordable high velocity HVAC installation, maintenance, and repair throughout Lincoln Park, Skokie, Chicago, Niles, Evanston, Wilmette, Park Ridge, and Morton Grove, IL.

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Serving Chicago, IL and surrounding areas

Unico HVACUnico SystemsUnico Products ∴ Park Ridge, IL ∴ Skokie, IL ∴ Wilmette, IL

Save today with our special offers

You love getting good deals, so here are some coupons to show our appreciation for considering us for your next heating or cooling installation or repair.

Special Offers
  • 30% off

    30% Off any repair with the purchase of a maintenance agreement.*

    773-763-9224


    *Restrictions apply. Cannot be combined with any other offers. Must present coupon at time of service.

    Expires: 02/29/2024

  • Free 2nd Opinion

    773-763-9224


    *Cannot be combined with any other offers. Must present coupon at time of service.

  • Save Thousands w/ Local & Federal Rebates

    Learn More


    *Scheduling restrictions may apply. Limited spaces available. Ground-level residential equipment. Cannot be combined with any other offers. Must present coupon at time of service.

  • $99 Preventative Maintenance

    773-763-9224


    *Scheduling restrictions may apply. Limited spaces available. Ground-level residential equipment. Cannot be combined with any other offers. Must present coupon at time of service.

What our clients are saying

Kousuke Sasaki
Kousuke Sasaki
the technician was helpful and friendly. He spoke with both confidence/competence that put me at ease and helped me understand the problem.
Michael Sutton
Michael Sutton
Furnace replacement Not the best price out there, but fair for the quality you'll see in the installation. As for any short falls on the job I would say more time explaining the full scope of the thermostat and programming schedule. Thow easy enough to find/ figure out with the help of YouTube. Will definitely recommend and use their services in the future.
Julianne Keating
Julianne Keating
I have been using them for 19 years purchased a new furnace in 2021 all the employees extremely helpful and knowledgeable
Zeljko Dakic
Zeljko Dakic
I recently had the pleasure of having my furnace installed by Jose and Miguel from Guardian Heating & Cooling Service, and I couldn't be happier with the experience. From start to finish, their professionalism, expertise, and attention to detail were evident. They arrived on time, were extremely courteous, and took the time to explain the installation process and how everything works. The installation was completed efficiently and with minimal disruption to my home. Jose and Miguel went above and beyond to ensure that the area was clean and tidy before they left. They also made sure I was comfortable operating the new system and answered all my questions with patience and clarity. I am thoroughly impressed with the quality of work and the level of service provided by Jose and Miguel. It's clear they take pride in their work and customer satisfaction is their top priority. I would highly recommend Guardian Heating & Cooling Service to anyone in need of heating and cooling services. Their team is truly top-notch!
Michael Chapin
Michael Chapin
Martin & Brian were highly professional! They called ahead, put mats on the floors to maintain a clean home, worked diligently and quietly. They took time to answer all my questions and assist me in me in the basic process of operating my new unit. My new unit is amazing. Great team at Guardian!
Hector Garcia
Hector Garcia
Wow! They did an awesome job, I can barely believe it. The two guys Sergio and Luis did a fantastic job. They knew exactly what to do right away. At first it was the thermostat and then went downstairs in the basement, to check on the furnace and made sure it had no electrical problem. Sergio and Luis opened up the furnace vent remove and cleaned it up. Vacuuming it all the dirt and dust around it. Removed some cables making sure no dirt was clogging it. Finally using there own special tools in equipment one with a camera to look and see inside any mechanical or filter problem. Once he finish gave me his business card and offered me brochure to sign up for a membership. I will definitely take it in consideration. Yes I highly recommend this company! Both guys are very professional and took care of business. Thanks to them and the company Guardian we have heating in our home throughout this entire winter.
Steven Aguilar
Steven Aguilar
Sergio was excellent. Knowledgeable and easy going. I would highly recommend.

Installing the best and servicing the rest!