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 SEER2 (Seasonal Energy Efficiency Ratio 2) 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 SEER2 unit. You can even customize it to better match your home’s system for a more accurate calculation.

SEER2 Energy Savings Calculator

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This calculator does not guarantee actual costs or savings and is only to be used for educational purposes.

Customize to Your Home

Adjust these settings for a more accurate calculation:

State

Province

Region

Rate (¢/kWH)

Tonnage

Average Annual Cooling Hours***


Historical Comparison

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** Data from U.S. Energy Information Administration
*** Data from 2002 EPA study

** Data for Canadian cities from nrcan.gc.ca
*** Data from weatherdatadepot.com

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.

“The Interstate appointment was made promptly. The technician arrived on time and was very efficient in inspecting our furnace and air conditioner. We are very satisfied with the service performed.”
- Kathleen M.
“The team was fantastic from start to finish. Our air conditioner had a coolant leak and needed to be replaced, along with the furnace. They were able to schedule the installation right away and walked us through the process to make sure we were getting exactly what we needed. They were very friendly and did a wonderful job cleaning up after!”
- Jessica Z.
“Eric O was timely polite & explained the repairs required in layman’s terms. Thank you for your time right before Labor Day”
- Kathleen G.
“Wow….. I made a call this morning in this disastrous heat and the service technician was prompt and repaired the system and looked at my other system and repaired that also I'm excited…..
I definitely would recommend interstate heating and cooling again and again”
- James O.
“Called at 7:30 am On a Sunday. I noticed A/C wasn’t working later the day before. Tech told me how to enter trouble code area on my thermostat. Read the codes to him. He came over on a Sunday and found the starting capacitor failed. Replaced it and system is running again. 11 year old Carrier A/C unit.”
- Paul H.
“Josh is a fantastic service tech! Knows what he’s doing, explains issues clearly, works efficiently and cares about customer satisfaction.”
- Chris H.

Need Air Conditioner Service?

Contact the experts at Interstate Heating Co.

Call us at 262-246-4772!