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Air Conditioning Installation & Repair

Stay cool all summer with an AC system that runs efficiently and keeps your home comfortable.

Air conditioning isn't a luxury in Wisconsin summers. When temperatures climb into the 80s and 90s, you need a system that cools your home without driving up your electric bill. We install central air systems that are sized correctly for your space and matched to your existing furnace or air handler. A properly installed AC system cools evenly, removes humidity, and runs quietly. We don't just bolt on a condenser and call it done. We check refrigerant levels, test airflow, and make sure your system performs the way it should.

Whether you need a new air conditioner for a home that's never had one or you're replacing a unit that's stopped working, we handle the entire installation. That includes mounting the outdoor condenser, connecting refrigerant lines, installing or upgrading the evaporator coil, running electrical, and testing the system under load. We also repair AC units that aren't cooling properly. Most problems come from low refrigerant, dirty coils, or failed capacitors. We diagnose the issue, explain what's wrong, and fix it so you're not stuck waiting days for parts or second opinions.

When you call Northern HVAC for air conditioning service, you're working with someone who's been installing and repairing AC systems in northern Wisconsin for five years. We know how these systems work, and we know what breaks. Call us and get cooling that works when you need it most.

What We Offer:

Central Air Conditioning Installation – We install complete AC systems matched to your home's size and your furnace or air handler.
AC Unit Replacement & Upgrades – We replace old, inefficient air conditioners with modern units that cool better and use less energy.
Refrigerant Leak Detection & Repair – We find and fix refrigerant leaks so your system cools properly without wasting expensive refrigerant.
Evaporator & Condenser Coil Cleaning – We clean dirty coils that reduce cooling performance and cause your system to work harder than it should.
Compressor & Capacitor Replacement – We replace failed compressors and capacitors that prevent your AC from starting or running correctly.
Thermostat Calibration & Replacement – We test and replace thermostats that aren't reading temperatures accurately or cycling your system properly.
Seasonal AC Tune-Ups & Inspections – We perform pre-summer inspections to catch small problems before they turn into expensive breakdowns.

Why Choose Northern HVAC for Air Conditioning Installation & Repair

Proper Sizing & Load Calculation – We don't guess at what size AC you need. We calculate your cooling load based on your home's square footage, insulation, windows, and layout so your system cools efficiently.
Quality Repairs, Not Quick Fixes – When your AC breaks, we diagnose the actual problem instead of throwing parts at it. We explain what failed, why it failed, and what it costs to fix it right.
Same-Day Emergency AC Repair – If your air conditioner stops working during a heat wave, we treat it as an emergency. Most repair calls get same-day service so you're not stuck in a hot house overnight.
Transparent Pricing & Honest Recommendations – We give you a price before we start work, and we don't sell you upgrades you don't need. If your AC can be repaired affordably, we'll tell you. If it makes more sense to replace it, we'll explain why.
Licensed HVAC Contractor – We're fully licensed and insured, which means your AC installation meets Wisconsin code and your manufacturer warranty stays valid. Unlicensed work voids warranties and creates problems during home sales.