AC Installation in De Pere & Green Bay, WI

When summer humidity settles over Northeast Wisconsin, a properly sized, professionally installed air conditioning system is the difference between a comfortable home and a summer of fighting your thermostat. Hockers Home Services has installed cooling systems for De Pere and Green Bay homeowners for more than 45 years, and we build every installation around a load calculation, not a guess.

Looking for a repair instead of a new system? Visit our AC Repair page for fast diagnostic service, or our AC Maintenance & Tune-Ups page to keep an existing system running efficiently.

Signs It’s Time for a New AC Installation

Not every cooling problem means a full replacement, but these signs usually point that direction:

• Rising energy bills — units over 10–15 years old run at significantly lower SEER ratings than current models
• Uneven cooling room to room — often a sizing or ductwork issue, not just an aging unit
• Frequent repair calls — if you’re paying for a repair every summer, replacement is usually the better long-term investment
• Loud operation, rattling, or grinding — a sign internal components are failing
• R-22 refrigerant systems — Freon-based systems are being phased out; see our breakdown of the government HVAC refrigerant mandate for what that means for your home
• Condensate or drain line issues — if you’ve noticed water pooling near your unit, check our guide on AC drain pans before assuming it’s a full system failure

Why Sizing Is the Most Important Step

The single biggest mistake in AC installation is improper sizing. We use Manual J load calculations — not a rule of thumb — to size every system we install, factoring in your home’s square footage, insulation levels, window placement, ceiling height, and existing ductwork.

Oversized systems short-cycle, waste energy, and fail to properly dehumidify your home. Undersized systems run constantly and still can’t keep up on the hottest days. Both wear out faster than a correctly sized unit.

What’s Included in Every Hockers Installation

• Ductwork inspection and sealing — leaky ducts can account for up to 30% of energy loss; we identify and seal leaks before your new system goes in
• Precise refrigerant charging — an incorrect charge can reduce efficiency by 5–20% and damage the compressor; we verify with digital gauges, not estimates
• Electrical and condensate connections brought up to current code, with condensate drains installed to prevent water damage
• System testing and commissioning — airflow, refrigerant levels, electrical performance, and thermostat operation all verified before we leave

Brands We Install

Hockers installs central air conditioning systems, heat pumps, and ductless mini-splits from Carrier, Trane, and Lennox — matched to your home’s size, insulation, and efficiency goals. Our technicians walk you through the tradeoffs between SEER ratings, variable-speed compressors, and two-stage cooling so you’re choosing based on your home, not a sales pitch.

Considering a full HVAC upgrade rather than cooling alone? See our furnace installation services or pair your new AC with a smart thermostat for better control year-round.

Our Installation Process

1. Home evaluation — we assess your current system, home size, insulation, and existing ductwork
2. System recommendation — options presented based on efficiency goals, budget, and long-term value, including financing through Ally
3. Professional installation — licensed technicians install to manufacturer spec and Wisconsin code
4. System testing — airflow, refrigerant, electrical, and thermostat operation confirmed
5. Homeowner walkthrough — we explain operation and maintenance before we leave

Most residential installations are completed in a single day.

Serving De Pere, Green Bay & Northeast Wisconsin

Hockers is based in De Pere and serves Green Bay, Ashwaubenon, Howard, and the surrounding Brown County area. Northeast Wisconsin’s humidity puts real demands on cooling systems even during a shorter summer season a correctly sized, correctly installed system handles that demand without running constantly or leaving rooms uneven.