Furnace Installation
By Interstate Heating Co Inc
Interstate Heating Co Inc offers professional furnace installation near Sussex, WI. Our skilled technicians assess your needs and install high-quality Carrier systems designed for comfort and energy efficiency all winter long. We take pride in precise installations, ensuring your system operates smoothly and reliably for years to come. Whether you're replacing an outdated unit or installing a new furnace system, rely on us for reliable service and customized solutions to keep you cozy all winter long.
What Does The Process Look Like?
Book an Appointment
Get started by booking a furnace installation appointment with your local Carrier by giving them a call or scheduling an appointment online.
Evaluation & Estimate
A professional technician will evaluate your home’s layout and heating and cooling requirements to recommend the right furnace for you. You’ll receive an estimate that outlines equipment options and prices, ensuring a solution that meets your comfort and budget needs.
Perform Installation
A certified technician will install your new furnace system, ensuring it’s set up for optimal efficiency and performance. From equipment placement to system calibration, they’ll handle every detail of your installation so you can enjoy reliable comfort throughout the year.
About Interstate Heating Co Inc
Emergency 24-hour service available.
Years in Business
64
Other Services We Provide
Furnace Repair & Service
We provide professional furnace repair and service to keep your heating system operating at peak performance. Our certified technicians can identify problems, perform necessary repairs, and fine-tune your system to keep you comfortable all year long.
HVAC Maintenance
We provide annual HVAC maintenance to keep your heating and cooling system running efficiently year-round. Regular tune-ups help prevent breakdowns, can improve energy efficiency, and extend the lifespan of your heating and cooling equipment.
HVAC System Installation
Let us ensure reliable comfort and energy efficiency for your home with professional HVAC system installation. We offer high-quality Carrier equipment, precise HVAC installation, and customized solutions to meet your heating and cooling needs.
Trusted HVAC Professional in Sussex
Verified Purchaseknowledgeable
April 14, 2026
Figured out which equipment failed and checked to make sure the warranty covered all.
DAVE
Expertise (5)
Solve Problems (5)
Service (5)
Verified PurchaseGreat work
May 22, 2025
Very satisfied with the quality of products and installations
JOSEPH
Expertise (5)
Solve Problems (5)
Service (5)
Verified Purchaseknowledgeable and efficient
April 28, 2025
They are the best!
JOHN
Expertise (5)
Solve Problems (5)
Service (5)
Verified PurchaseGreat
April 15, 2025
Great
MADAN
Expertise (5)
Solve Problems (5)
Service (5)
Verified PurchaseVery good service
April 09, 2025
Better price and good service
MARY
Expertise (5)
Solve Problems (5)
Service (5)
Verified PurchaseRecommend, but only with caution and owner diligence
March 23, 2025
While we would generally recommend this dealer for their professionalism and responsiveness, we remain disappointed with the lack of an absolute solution for condensation on the air return ducts when very cold air is brought in. Two other scenarios affected our "first impression": (1) week 1 of having the house, we had to tighten a water line to the humidifier which was leaking water to the basement floor, and (2) when cooling season began, we discovered that the compressor on the A/C unit was shot (no cooling!), and the entire unit needed to be replaced.
NAT
Expertise (5)
Solve Problems (3)
Service (4)
Verified Purchasefonder builders
March 06, 2025
excellent guys and service
KEITH
Expertise (5)
Solve Problems (5)
Service (5)
Verified PurchaseGreat Service with Interstate Heating, Sussex
December 30, 2024
Excellent Service and installation
GERALD
Expertise (5)
Solve Problems (5)
Service (5)
Verified PurchaseInterstate Heating of Sussex, WI.
April 19, 2018
Service personnel are professional and knowledgeable. I have had excellent service from this company for the last 20 years.
Kenneth
Expertise (5)
Service (5)
Solve Problems (5)