YOUR ANSWER TO A COMFORTABLE,
HEALTHY, AND SAFE HOME

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HEATING
SERVICES

Are you thinking about upgrading your furnace but not quite sure where to begin?

We understand. Furnaces are more efficient than ever, with a plethora of features designed to keep you comfortable. They come in different sizes and shapes, some more powerful than others. They also have different price points based on their efficiency ratings.

 

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INDOOR
AIR QUALITY

Think about the air you breathe every day—how clean is it?

Most people spend the vast majority of their days indoors, and much of that time is spent at home. Yet, it’s easy to overlook your indoor air quality (IAQ). We might think about the temperature of our Wisconsin, homes, and even the water quality. But how often do you think about the air you are breathing?

 

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COOLING
SERVICES

These days, air conditioning (AC) is no longer a luxury. When outdoor temperatures soar, you want the cool comfort an air conditioning system brings to your Wisconsin, home.

At Ultimate Air, our team of heating and cooling experts can help you manage the level of comfort you want. As a company, we stay current on our professional education and training to bring top technologies and techniques to you. You can rest assured we will recommend exactly what you need.

ABOUT ULTIMATE AIR, INC.

Ultimate Air, Inc., provides expert advice, unbeatable workmanship, and unparalleled customer care to Brown, Kewaunee, and Door County area residents. From general heating and cooling contractor services to new heating and cooling system installations, you can count on our highly-trained and experienced technicians to deliver unparalleled results with 100 percent satisfaction guaranteed. Local home and small business owners have come to depend on us since 2007 for reliable heating, cooling, and air services. We sell and install high-quality Lennox HVAC systems, and unlike other shops that specialize in one or two services, Ultimate Air, Inc., can meet all your heating, cooling, and air quality needs.

CUSTOMER TESTIMONIALS

“The who team were very nice and knowledgeable in helping finishing my boiler system. I also had a heat pump installed. They are now my main hvac
Service provider.”
- Kris P.

“I needed a repair on one of the busiest days of summer with 98 degree temperatures. Not only were we able to get in same day, but within hours. They were also very reasonably priced for an emergency visit! My family and dogs THANK YOU!”

- Kimberlee S.

“My home needed a new air conditioner, the old system was two air conditioners one was 2 ton and the other was 2.5 ton. Jeff and his team designed a new single system with a capacity of 2.5 ton capacity. Their attention to detail went above and beyond what you normally get from HVAC Contractors. They designed a new ductwork system
with a high efficiency air filter that required very little horsepower to move the air through the system, resulting in a total system electricity consumption which was too good to believe. My system uses very little electricity resulting in a very low kwh/ton energy consumption. I am a retired industrial HVAC engineer, and I can tell you that Jeff and his team really paid a lot of attention to detail. I got 4 quotes from Contractors for my project, and only two were able to conduct a Home Load Analysis (one was done by Jeff and his team). One Contractor refused to do a load analysis and said the new system would be sized for 4.0 ton. I cannot say enough about the Jeff and his team on our project, they went out of their way to provide a very energy efficient air conditioner system for my home with a very efficient air filter with very little air pressure drop. Outstanding design & service.”

- William A.

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OUR SPECIALS

Coupon for  off HVAC system repair.
0 Summer Maintenance AC Tune-Up. Only  per month when you become a Comfort Club Member.

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Why Is My Thermostat Blank? Blank space on screen of thermometer.

Why Is My Thermostat Blank?

July 18, 2025

It is an “Oh no!” moment when you approach your home’s thermostat and see its blank screen.

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Why Are They Called Ductless Mini Splits? A wall-mount mini-split heating and air conditioning unit installed in a new house. A modern heat pump, this unit heats a house in winter and cools in the summer. This type of system eliminates ductwork which is a primary source of inefficiency in a conventional system making this about 30% more efficient. This particular unit has an eye sensor which pans the room looking for hot or cold spots and directs the airflow accordingly.

Why Are They Called Ductless Mini Splits?

July 11, 2025

They’re called ductless mini splits because they don’t require ductwork and consist of two main components—a compact indoor air handler and an outdoor compressor—connected by refrigerant lines. This “split” design allows for efficient, targeted heating and cooling in specific areas.

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Why Is My AC Short Cycling? HVAC technician fixing an air conditioner.

Why Is My AC Short Cycling?

June 26, 2025

If this story sounds familiar, you’re not alone. This frustrating AC behavior, known as “short cycling,” is a common problem for homeowners in Sturgeon Bay, and across Wisconsin. Consider it a red flag waving vigorously, signaling that something isn’t quite right with your air conditioning system.

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WE SERVICE ALL BRANDS

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ARE YOU LOOKING FOR A HEATING OR COOLING CONTRACTOR IN BROWN, KEWAUNEE, AND DOOR COUNTIES?