Keep your home cool through Jefferson County summers with expert air conditioning repair, air conditioning installation, and seasonal tune-ups that extend the life of your system.
Heating & Cooling Experts
HVAC Services in Watertown & Jefferson County, NY
AC/DC Mechanical, LLC delivers reliable HVAC services for homes across Watertown and Jefferson County, from furnace repairs to central air installs.
Our Services
Full-Service HVAC Services for Every Season
Winters near Lake Ontario and Jefferson County demand equipment that won't quit when the temperature drops below zero. Whether your furnace won't fire up or your central air needs a tune-up before summer, our technicians are ready to help. Our residential HVAC services cover everything from furnace and boiler repair to central air conditioning installation, so your home stays comfortable no matter what the forecast looks like.
We work on all major brands and system types, including ductless mini splits, heat pumps, and traditional forced-air furnaces. Our technicians diagnose the actual problem before recommending a repair or replacement, so you're never paying for work you don't need.
Beyond repairs, we handle full system installations, seasonal maintenance plans, and indoor air quality upgrades for households dealing with allergies, excess humidity, or stale air. If your ductwork or gas lines need attention during a system upgrade, our team also provides repiping services to make sure everything is connected safely and up to code.
Our Services
HVAC Services We Provide
From a single-room mini split to a whole-home furnace replacement, our HVAC contractor team handles the job with the same attention to detail. Explore our core service categories below, or call us directly if you're not sure which one fits your situation.
View Air Conditioning Services
Local businesses, restaurants, and property managers rely on us for commercial HVAC services and refrigeration repair that minimize downtime and keep operations running smoothly.
Furnace repair, boiler installation, heat pump services, and emergency heating repair for homes across Watertown, Carthage, and the surrounding towns.
Common HVAC Concerns
Signs Your Home Needs HVAC Attention
Many heating and cooling problems give warning signs well before a full system failure. Catching these issues early with our HVAC services can save you from an uncomfortable night or a costly emergency call.
- Uneven heating or cooling between rooms, often a sign of ductwork or airflow issues
- A furnace or heat pump that runs constantly without reaching the set temperature
- Rising energy bills with no change in usage habits
- Musty odors, excess dust, or humidity that point to a need for indoor air quality services
- An aging air conditioner (10+ years old) that struggles to keep up on hot, humid afternoons
- Ductless mini split units that leak, ice over, or blow warm air instead of cold
What Neighbors Are Saying
Trusted HVAC Services Across the North Country
★★★★★
First off, called back promptly. Showed up on time. Did a great job.
★★★★★
Couldn't be happy with the quality of work we always receive! Some of the best work I've seen and its always a pleasure working with AC/DC, Very refreshing experience every time!
★★★★★
Anthony was awesome. Great job finding out the problem with no hot water and fixed it quickly and efficiently.
★★★★★
Anthony is a diamond in the rough capable of doing so much efficiently while maintaining a great work ethic and attitude. We just had him install the AC unit for our home after changing the position of our furnace and doing all the duct work by hand. He continues to be our first call for any work we have because we trust it’ll get done and done well. For anything you need trust in Anthony!
★★★★★
Great experience highly recommend. Did some propane hook up work and everything works great, looks neat, and he was professional and friendly as well as knowledgeable. Will continue to go to for projects.
★★★★★
Very professional and friendly. Would recommend to anyone.
★★★★★
Anthony did an outstanding job. He's very neat, professional, he is very experienced in HVAC. We could not be happier with his work ethic I would highly recommend his company to anyone looking for HVAC.
★★★★★
Very happy with Anthony’s work- he stuck to it until he discovered the faulty valve core. I’d highly recommend him!
★★★★★
Showed up within hours of my call. Stayed late and got the job done. He explained the problem in terms I could understand and provided a reasonable solution in terms I could also understand. Highly recommend. Thank you
★★★★★
Excellent service!!! Thank you for a wonderful experience. Great plowing, never missed a day, always came early and rechecked in evening. Thank you for your service Anthony!
Get Started
Ready for HVAC Services You Can Count On?
Don't wait for a breakdown in the middle of a Jefferson County cold snap. Contact AC/DC Mechanical, LLC today and let our team keep your home's heating and cooling running the way it should.
