Air Conditioning

Air conditioning service.

Interstate Heating Co. is your #1 HVAC contractor in Sussex, WI and the surrounding communities. We are the leading company for all of your air conditioning needs. If you need repairs, maintenance, or a brand new system installed, the technicians at Interstate Heating Co. are the qualified and professional crew for the job.

We provide the highest quality service for your air conditioner. We also aim to educate and inform our customers. Informed decisions are good decisions. We want you to feel confident we are qualified to perform the service for which you are hiring us.

How Much Money Can a New Air Conditioner Save You?

Our SEER energy savings calculator can help determine how much you could save on your utility bills. Simply enter your current unit's SEER value and compare it to a newer, more efficient system. You can even customize it to better match your home's system for a more accurate calculation.

The SEER Calculator is disabled because JavaScript did not properly load.

To view the calculator please try your browser's refresh button, enable JavaScript, or try a different browser.

Air Conditioning Basics

The four main components to your air conditioner are:

Condenser: The condenser is the outside metal unit and where the gas from the compressor is condensed into a liquid. The gas entering the condenser is very hot. The temperature is then lowered, so the gas can convert back to a liquid.

Compressor: The compressor is inside the condenser. It circulates the pressurized refrigerant, to concentrate the heat, and changes the low pressure gas to high pressure.

Evaporator: The evaporator is the part of the system inside the home. In simple language, it absorbs the heat from your home.

Expansion Valve: The expansion valve controls the amount of refrigerant in your system.

All of these pieces are connected by a copper tube that handles refrigerant, creating a closed loop. Heat is collected in the evaporator, sent outside to the condenser. The heat is removed, and the cool air is recirculated back into your home.

AC Facts

An Air Conditioner Doesn’t Create Cool Air.
What happens in the AC process is actually the removal of heat from the air. Your AC uses a chemical called refrigerant to remove heat and transfer it outside. The warm air runs through the lines and coils in your unit and goes from liquid to gas and back again. During this process, the refrigerant removes the heat and transfers it elsewhere so that when the air comes out the other side, it is cool.

Your AC Will Remove Humidity.
Lower humidity helps the overall comfort level in your home by making you feel cooler, even if the temperature is the same.

Your Air Filter Needs To Be Checked And Replaced Every Three To Six Months.
(depending on the manufacturer’s recommendations)
A dirty air filter restricts your air flow, which reduces efficiency, costing you money, and over time can put stress on your unit and could cause a costly repair.

Maintenance, Maintenance, Maintenance.
Your air conditioner needs regular checkups to keep it running in tip-top shape. Having regular annual preventative maintenance will bring your system longer life and fewer breakdowns over all.

SEER
The Seasonal Energy Efficiency Ratio (SEER) measures air conditioning and heat pump cooling efficiency, which is calculated by the cooling output for a typical cooling season divided by the total electric energy input during the same time frame. A higher SEER rating means greater energy efficiency.

At Interstate Heating Co., we provide all the services you need to keep your AC running in top-notch shape. Call us at 262-246-4772 for repairs, maintenance, or new-system installation.

Furnace and Air Conditioner Installation

I just wanted to drop you a quick note to say thanks for all of your efforts in getting us our new furnace and air conditioner—the installation crew did a fantastic job. I’ve shown a few people the installation and they were amazed at the neat, professional job that was done. Plus, the whole crew was very friendly and patient with me and my endless questions. The system is working beautifully. As you suspected, the temperature difference between the upstairs and downstairs has almost completely disappeared, and everything is so quiet you can hardly tell it’s on. I’m almost excited to get my next electric bill to see how much money we’ll save. We literally could not be happier with the system. I’m sure there are more exciting home improvements, but this necessity has given us the most benefit and a lot of enjoyment. I will highly recommend you and Interstate to anyone who’s in the market for new HVAC equipment, starting with my dad, who has a furnace and air conditioner that are nearly 20 years old. Thanks again. -Pete

Furnace and Air Conditioning System Installation

Your company recently installed a new Carrier® furnace and air conditioning system in our home. We were very pleased with the quality of service we received. From David, who oversaw the project, to the entire team helping with this installation, we were most impressed. Everyone was professional, knowledgeable, and extremely courteous, and did an excellent clean-up job when done. The entire job was completed in one day. This is one of the most satisfactory contractor experiences we have had. We will not hesitate to recommend Interstate Heating whenever the occasion arises. -Phillip R.

Excellent Furnace and Air Conditioner Installation

Good morning, David. I write this message to let you know how pleased we are with your service while having a new furnace and air conditioner installed in our home. Your quick response to our request for an estimate and recommendation, followed by a three-day turn-around on installation, was exceptional. Tod and Brett did a great job in installing the units, they were pleasant to work with, and did an excellent job cleaning up after they were done. Our air conditioner is working great, and we are always ready to recommend your company to our neighbors. Keep up the great work and thanks so much for your outstanding service. -Mike & Anne S.

Air Conditioner Installation

We wanted to send a note to let you know how pleased we are with our new air conditioning. Our hydronic heat (a boiler) prevented us from having anything but window air conditioning units—until we met you at the home improvement show and you explained what your company could do. The entire process went very well and the vents in the ceiling look as though they’ve always been there. Your staff and electrician were great to work with and they cleaned up as they went along—a huge plus in my book! Our install was in early May and when the warm weather arrived—heaven! No struggling with window units, no taping windows, just comfort at the push of a button. Yours is definitely a company to trust. Thank you again! -Fran & Thom

Heating & Air Conditioning System Installation

Your installers were top notch and your company did everything they said they would. I have received my rebates and was glad that your company made it so easy to get them. I will highly recommend your company to anyone I know who needs new heating or air-conditioning equipment. -Tim H.

Air Conditioner Installation

Our Carrier® air conditioning unit lasted for 34 years without service, which is quite remarkable. This experience, as well as high ratings by Consumer Reports, made the selection of another Carrier our first choice. We are looking forward to the efficiency of our new Carrier heating and cooling system. Interstate’s installation of these units was performed in a professional and timely manner. -Jim & Marion K.

Heating & Cooling System Installation

I have been a customer of Interstate for many, many years—I think I bought my first system from you in the late 80s or early 90s. You have an awesome company with awesome people working for you. I especially wanted to compliment your team because I have called twice since last week’s installation and am so appreciative of all the people I have worked with—I hope they do not feel I am being a bother. I have always recommended Interstate to anyone looking for heating or cooling solutions, and I just wanted to thank you and the entire Interstate group of people for being so good at what you do. Thank you so much and please let the people who worked on my systems in the past week know that. -Anthony

Need Air Conditioner Service?

Contact the experts at Interstate Heating Co.

Call us at 262-246-4772!