Serving Oneida & Herkimer Counties for 85 Years

Welcome to Fred F. Collis & Sons, a trusted provider of quality HVAC services to Central New York and the Mohawk Valley for over eight decades. If you are a homeowner in our service area, we are the only company you need to know for heating, air conditioning, indoor air quality, insulation and a variety of other home comfort solutions. In addition, we also offer emergency service and financing options if you require a new system installation. Every member of our team is committed to providing outstanding service – it’s what we call the Collis difference!

Our primary service areas are Oneida County and Herkimer County, including the following communities:

  • Utica
  • Whitesboro
  • Rome
  • Yorkville
  • Clinton
  • New Hartford
  • New York Mills
  • Holland Patent
  • Marcy
  • Stittville
  • Oriskany
  • Little Falls
  • Remsen
  • Frankfort
  • Forestport
  • Sauquoit
  • Westmoreland
  • Herkimer
  • Ilion
  • And more!

Striving for 100% Customer Satisfaction

At Fred F. Collis & Sons, our commitment to our customers starts with in-depth training. All of our technicians are NATE Certified, giving you the confidence that you are hiring proven professionals who can complete any job efficiently and safely. We are also proud to be a Carrier Factory Authorized Dealer. Count on our team for any of the following HVAC services:

  • Heating installation
  • Heating maintenance
  • Heating repair
  • Ductless heating
  • Heat pumps
  • Gas fireplaces
  • Oil to gas conversion
  • AC installation
  • AC maintenance
  • AC repair
  • Ductless air conditioning
  • Air duct cleaning
  • Air purifiers & filters
  • Spray foam & blown-in insulation
  • Air sealing
  • Generators
  • Water heaters
  • And more!

If you have a commercial business, Fred F. Collins & Sons offers can also meet your commercial HVAC needs. We offer both a written guarantee on every new installation and a satisfaction guarantee that covers our service. We are also proud to be a fully accredited and A+ rated business with the Better Business Bureau.

Have Questions? Ready to Schedule Service?

To discuss our products and services or to schedule an appointment for service, contact Fred F. Collis & Sons today. Call us at 315-768-2323 or complete our online contact form to experience the Collis difference!

Count on Collis

Contact us today.

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Special Offers

Now is the perfect time to upgrade your heating or AC with amazing savings and value that only Fred F. Collis and Sons can offer – Call us now to learn how you can save energy and money with our high-quality systems!

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Financing Available

If you're looking to upgrade your system, but you have to work within a budget, then let Fred F. Collis help make things a little easier with our financing options.

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When you choose Fred F. Collis as your heating and air conditioning contractor, you're also choosing innovative Carrier® products that come with an incredible warranty.

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Emergency Service

When you need help, and you need it fast, you can rely on Fred F. Collis to be there as soon as possible. Call us when you have an emergency, 24/7 even Holidays or weekends.

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Seasonal Tune-Ups

The life of your system, and its efficiency, is dramatically impacted by how well it's maintained. You'll have a worry-free season, once we've given your heating or AC system its tune-up

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Annual Maintenance

Annual maintenance agreements are an easy and affordable way to keep your system running in tip-top shape, and ensure that if there ever is an emergency, you'll get the royal treatment at a discounted price.

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