30+ Years of Excellence.
Breathe Easy with Top-Quality Heating and Air Conditioning Services in Northern New Jersey
Experience fast, reliable, and affordable HVAC services from a trusted family-owned business. From same-day repairs to energy-efficient upgrades, we’re here to keep your home cozy and worry-free.
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About Us
Your Local Heating & Cooling Experts Since 1988
Since 1988, Willco Air Conditioning, Refrigeration & Heating Inc. has been providing top-notch heating and cooling services in Sussex County. Our fully trained team ensures every job is done quickly and correctly, keeping your home comfortable year-round.
We offer high-efficiency products and expert repair & maintenance services for all makes and models. Plus, we’re available 365 days a year to keep your systems running smoothly.

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Expertise and Experience
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Committed to Quality
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Comprehensive Services
Hassle-Free Heating, Cooling, and Air Quality Services
Air Conditioning Services
Heating Solutions
Heat Pump Systems
Indoor Air Quality
Water Heaters
Looking for something else?
Why New Jersey Trusts Willco
Same-Day Service When You Need It Most
We offer same-day service to for all of your heating and air conditioning emergencies
Trusted Expertise for Over 36 Years
Proudly serving Sussex, Morris, and Warren Counties since 1988, our family-owned business is dedicated to keeping your home comfortable.
Award-Winning Service You Can Count On
Voted Best Heating and Air Conditioning Company in Sussex County for over 5 years in a row! Experience the difference of working with a company that’s recognized for excellence.
Local Experts, Trusted by the Community
Rated 4.9 stars by our satisfied customers, our skilled technicians deliver top-notch service you can trust, every time.
Comprehensive Coverage for Your Comfort
We proudly serve a wide range of areas and offer solutions tailored to your needs. Explore our service areas to see how we can help you.
24/7 Availability for Year-Round Comfort
We’re here for you every day, 365 days a year, ensuring your heating and cooling systems run smoothly no matter the time or season.
Let’s make things happen
Receive up to $1,700 in rebates OR make no payments, incur no interest for 12 months when financing a new Lennox system**

Breathe Easier – Get Your Free HVAC Guide Today!

Unlock the Secrets to a Comfortable, Energy-Efficient Home
Take control of your home’s comfort and efficiency with our exclusive guide! Packed with expert tips and practical advice, you’ll learn how to lower energy bills, enhance indoor air quality, and keep your heating and cooling systems running smoothly year-round. Sign up now to get this invaluable resource sent directly to your inbox and start creating a healthier, more cost-effective home environment today!
EXCELLENT rating
Based on 242 reviews


April Capizzo2025-02-14Trustindex verifies that the original source of the review is Google. Paul was very helpful and efficient. Look forward to having him as our technician for the future and highly recommend him to anyone else! Kevin Prendergast2025-02-13Trustindex verifies that the original source of the review is Google. We are very happy with Chris’s service. He explained what he was going to do and suggested a deep cleaning of the indoor units next year. Thanks Chris. Mark Unglaub2025-02-05Trustindex verifies that the original source of the review is Google. Our experience with Willco has been amazing. We converted to gas from oil and Willco was there every step of the way. From Frank is sales, Karen in dispatch and Allen and Bubba as our installers, we could not have asked for better service. We highly recommend Willco for all of your plumbing/heating needs. Bruce LaBar2025-02-04Trustindex verifies that the original source of the review is Google. Our 30 year old steam boiler failed onChristmas Eve afternoon Willco came the day after Christmas to inspect and give an estimate to replace the boiler the work crew arrived on Friday morning and had the new boiler installed and operational by the late afternoon giving us the much desired heat during a cold snap in December the whole process was done with care and concern for our well being Mike was most helpful and knowledgeable about steam as not many steam boilers are being used today I don’t hesitate to recommend Willco for any heating or air conditioning needs Gerri Covello2025-02-03Trustindex verifies that the original source of the review is Google. Whenever I need a check-up for the winter or summer, I just have to call and make an appointment. Will has been here a few times and we always ask for him because he is professional courteous and just so very nice. Liz Wiener2025-02-03Trustindex verifies that the original source of the review is Google. these guys are amazing!! polite and helpful. They answer all questions in a very timely manner. reasonable pricing and very professional. NateGlessner2025-01-31Trustindex verifies that the original source of the review is Google. Paul is a great technician. He's efficient and honest. He's performed service on my two oil furnaces and always leaves them running perfectly. He's also neat and doesn't leave a mess. Karen and Eddie in the office are both helpful and courteous. Their billing is fair and they stand by their work. As a service buisness owner myself, I'm very aware when a company is above the crowd with not only their work but also their invoicing and warranties, this is why I'll continue to use Willco moving forward! Nancy Willis2025-01-28Trustindex verifies that the original source of the review is Google. Will was a fabulous technician. He spent time educating us on the products. He was very professional and on time. Highly recommend Willco to my friends and neighbors. Jenifer stevenson2025-01-14Trustindex verifies that the original source of the review is Google. Wilco is fabulous! From the attentive office schedulers who had a technician on scene within 2 hours of my call to the HVAC repair man who came to my house and diagnosed the problem within minutes of arrival, I am just over the moon with gratitude for this local company. They were efficiently able to secure the part that I needed for my 30 year-old furnace and had it back up and running in under 24 hours. Thank you!
Frequently Asked Questions
Why is regular maintenance important?
What sort of technology comes with the HVAC systems that we carry?
Will my new furnace work differently than my old one?
Depending on how old your previous furnace was, you could experience a host of differences. Furnaces today are created to give more even and efficient heating than ever before. Modern furnaces also better regulate temperature and air flow, moving more air over the heat exchanger than older furnaces.
Additionally, new furnaces are crafted to integrate with other high-efficiency HVAC products, such as air conditioners. The air conditioner blowers offer your heating system an extra lift so it can deliver cool air around your home efficiently. Special features like variable speed motors will also help decrease noise associated with operating your equipment and easily meet your family’s airflow needs.
How much should I expect to pay for a new heating and air conditioner?
What is two-stage heating?
Will my new furnace work differently than my old one?
Depending on how old your previous furnace was, you could experience a host of differences. Furnaces today are created to give more even and efficient heating than ever before. Modern furnaces also better regulate temperature and air flow, moving more air over the heat exchanger than older furnaces.
Additionally, new furnaces are crafted to integrate with other high-efficiency HVAC products, such as air conditioners. The air conditioner blowers offer your heating system an extra lift so it can deliver cool air around your home efficiently. Special features like variable speed motors will also help decrease noise associated with operating your equipment and easily meet your family’s airflow needs.
WillCo Clean and Green Energy
At Willco Air Conditioning, we are committed to not only keeping you cool but also protecting our environment. Our energy-efficient air conditioning solutions are designed to minimize your carbon footprint while maximizing your comfort. By utilizing the latest technology and eco-friendly practices, we help you reduce energy consumption and lower your utility bills. Whether it’s through high-efficiency units, smart thermostats, or regular maintenance, Willco ensures that your cooling system operates at peak performance with minimal environmental impact. Choose Willco for a greener, more sustainable way to stay comfortable all year round.

Stay Informed, Stay Comfortable With our Latest News & Blog
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