Our Service Area

When you choose Interstate Heating, you’re choosing a leading heating and cooling company in the Greater Southeastern Wisconsin area. From troubleshooting repairs to installing a new furnace or air conditioner, our NATE-certified technicians are available to help whenever you need them. And we offer 24-hour emergency service in case something should break down. Simply give us a call at 262-246-4772 the next time you need service—whether it’s a tuneup and maintenance or help with selecting a brand new home comfort system. Our award-winning staff takes care of you at every step, from the first call until the last piece is in place. With over 50 years of serving communities throughout the Greater Sussex area, you can bet we’ve got you covered. We are a Carrier Factory Authorized Dealer and we guarantee your satisfaction 100 percent. Reach out today so we can take care of your home comfort needs. Cities we serve include, but aren’t limited to:

Have a Question? Ask The Expert

  • Question: How can I increase the efficiency and life of my home's heating and cooling systems?

    The Answer
  • Question: What temperature should I set my thermostat?

    The Answer
  • Question: Should I close the registers and doors to areas of the home that I do not use on a regular basis?

    The Answer