Open 7 Days a Week

Furnace, Mini Split and AC Services

Deerfield, IL


If you need heating, cooling, duct cleaning or indoor air quality services in Deerfield, Ultimate HVAC is your local expert. From our home office in Skokie, we've been assisting the residential and commercial residents in the Deerfield area with their repair, installation and maintenance service needs for years. We're proud to be a locally owned and operated HVAC contractor who puts customer satisfaction and comfort above all else. Deerfield is a north shore suburb of Chicago that lies in Cook and Lake Counties.

The suburb is home to some large company headquarters including Walgreen Boots Alliance, Baxter Healthcare and Caterpillar. Deerfield is a lively and pleasant suburb and also a great place to have your home. The seasons can bring harsh weather for Deerfield and the whole northern Illinois area, the next time you need repair, maintenance or a new system installation for any of your home's HVAC systems call our team. Ultimate HVAC is here to help with your furnace, AC, boiler, mini split, water heating, duct cleaning and IAQ service needs.

System Shield Warranty

Need extra coverage? Get it with System Shield

This 10-year extended warranty provides 10 years of labor and a 12-year parts warranty for $350. Select this feature when registering the warranty online.

Furnace Repair & Installation

Our heating technicians at Ultimate HVAC are all NATE certified, licensed and insured. When you call us for furnace service you can have peace of mind knowing that you and your system are in the best possible hands. Having an unexpected furnace system failure is the worst, and dangerous if it happens on a cold winter night here in Deerfield.

We are just a call away for your emergency furnace service if the worst happens. Our certified technicians can get your furnace repair and maintenance done regardless of make or model. If you're in the market for a system upgrade or replacement we have top of the line units from Armstrong Air and Ducane for your installation. Furnaces available today are incredibly more efficient and effective compared to those from a decade ago, call today to get your free system quote.

Ultimate HVAC is your local A/C repair specialist.
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NATE certified: Nate Certified heating and cooling contractor.
EPA Certified: Ultimate HVAC is EPA refrigeration and air conditioning certified.
Accredited A+ Rated BBB Member: Ultimate HVAc has been an Accredited Better Business Bureau member since 2017, and we are more than proud of our A+ BBB rating!
Licensed and Insured: Ultimate HVAC is licensed and insured to do furnace, boiler, air conditioning, and water heating work throughout Cook County.
Book air conditioner repair and service with Ultimate HVAC today.

Ductless Mini Split Service in Deerfield

If you already have a mini split heat pump for your home or business in Deerfield you're aware that these systems are incredibly efficient and effective at heating and cooling your space. Ductless mini splits are great choices for new builds or home additions because they can be installed virtually anywhere. We're proud to be a Mitsubishi Diamond Pro Contractor, which means our team has been certified by Mitsubishi to be an elite ductless mini split service expert. Mitsubishi ductless mini splits are among the best mini splits on the market today, call today to learn more about our selection for your residential or commercial installation in Deerfield.

AC Services in Deerfield

If you need AC system repair, maintenance or a new installation or replacement give Ultimate HVAC a call. We stock all the necessary tools and equipment to get your emergency AC repair or maintenance done right away for any make or model system. We rely on our AC units to keep us cool and comfortable during our hot and muggy Cook County summers. If your central AC system has been on the fritz, call and schedule a visit from one of our NATE certified cooling technicians.

It's always a good idea to schedule a tune-up and maintenance for your AC before the heat of summer hits. Routine maintenance done by a professional keeps your cooling and heating systems working better for longer. Just as you take your vehicle in for regular oil changes, in order for your AC to work as it should through the years you need to keep up on it's maintenance. If you'd like to schedule planned AC maintenance or are interested in learning about our Armstrong and Ducane AC units for installation call today. Ultimate HVAC is your AC service expert in Deerfield.


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Locally Owned

Ultimate HVAC is local owned and has decades of experience providing cooling solutions for metro Chicago homeowners and businesses.

Guarantee Peace of Mind

Ultimate HVAC is committed to your needs and satisfaction regarding HVAC or indoor air quality.

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