Inspection and Diagnosis
A licensed technician inspects your current system, checks refrigerant levels, airflow, and electrical connections, and identifies exactly what's causing performance issues or comfort complaints.

Honest, expert air conditioning services from a trusted North Country HVAC team.
AC/DC Mechanical keeps Jefferson County homes cool through every humid summer.
Summers near Lake Ontario and the Thousand Islands bring thick, sticky heat that puts real strain on home cooling systems. AC/DC Mechanical provides air conditioning installation, repair, and maintenance for homeowners throughout Watertown and the surrounding Jefferson and Lewis County communities.
Our technicians work on central air systems, ductless mini splits, and heat pumps, matching each home to a system sized correctly for its square footage and layout. We also handle ductless mini split repair for homes without existing ductwork, a common need in older farmhouses and camps around the Thousand Islands.
As a full-service HVAC contractor, we pair our residential HVAC services with heating and cooling services, ventilation services, refrigeration services, and plumbing services, including repiping services and tankless water heater services. That means one trusted company handles the comfort systems that keep your home running, not a rotating cast of subcontractors.

Skipping routine cooling care or hiring an unlicensed handyman for repairs usually costs homeowners more down the road. Professional service protects the investment you've already made in your system.

Every air conditioning job starts with a straightforward conversation about what your home needs and what your budget allows. From there, our process stays consistent whether we're installing a new system or repairing an aging one.
A licensed technician inspects your current system, checks refrigerant levels, airflow, and electrical connections, and identifies exactly what's causing performance issues or comfort complaints.
We walk you through your options in plain language, whether that's a targeted repair, a full replacement, or a ductless mini split installation for a room that's always been hard to cool.
Our team completes the work using quality equipment and proper installation practices, protecting your home's flooring and furnishings throughout the job.
Before we leave, we test the system under load, confirm proper thermostat installation and calibration, and walk you through basic maintenance so your cooling holds up all season.
Homeowners across Jefferson and Lewis Counties want a contractor who shows up when promised and stands behind the work. That's the reputation we've built one job at a time out of our Watertown shop.
Our crews understand how lake-effect humidity, older housing stock, and rural properties around Carthage, Lowville, and the Thousand Islands affect cooling equipment differently than a typical suburban home.
Beyond cooling, we're a licensed plumbing contractor and HVAC contractor offering everything from water heater installation to gas piping, so your whole mechanical system stays in one set of trusted hands.
We answer calls quickly and schedule service promptly, because a broken air conditioner during a July heat wave isn't something that should wait a week for attention.
Most air conditioning failures don't happen without warning. Catching these signs early usually means a simpler, less expensive repair.
If any of these sound familiar, a quick call to AC/DC Mechanical can usually get things sorted before a small issue turns into a full system replacement.

AC/DC Mechanical provides air conditioning installation, repair, and maintenance across our home base in Watertown and the surrounding communities we've served for years.

Don't wait for the hottest week of the year to find out your air conditioner can't keep up. Call (315) 778-3905 and our team will schedule fast, dependable air conditioning services for your Watertown area home.
