Best Air Conditioning & Heating Companies in Green Bay, WI

Best Pick Certified Air Conditioning and Heating companies in Green Bay, WI have earned their status through independent consumer research—not paid placement. To qualify, a company must meet strict standards:

• High customer satisfaction: 4.0+ Google rating (25+ reviews) OR 80%+ recommendation rate from surveyed customers
• Verified credentials: Active state licenses, general liability insurance, and workers' comp (where required)
• Financial stability: Clean credit history and active Secretary of State standing
• Local track record: Minimum 1 year serving the Green Bay, WI area

Certification is re-verified annually, ensuring continued performance.

No. Air Conditioning and Heating companies cannot buy Best Pick Certification, improved ratings, or better placement. Our research team independently evaluates companies based on customer satisfaction, licensing, insurance, and business stability—before any business relationship exists.

Companies that earn certification pay a participation fee after qualifying, which covers the cost of ongoing research and publication. This fee has no influence on whether a company qualifies or how they appear in our directory.

The Best Pick Guarantee provides financial protection—up to $2,500 in labor costs—if a Certified Best Pick Air Conditioning and Heating company fails to deliver on their commitments.

To be eligible:

• Contact the company through Best Pick Reports or BestPickReports.com
• Register for the guarantee (free)
• Submit any claim within 45 days of the final date of service
• Allow the company the opportunity to resolve the issue first

This guarantee applies only to Certified Best Pick companies, not Standard Pros. Full terms are available on our guarantee page.

If your furnace is making a loud banging or rattling sound during a January cold snap, it is likely straining against the extreme heating demand of a sub-zero Fox Valley winter. With heating degree days often exceeding 7,000, your system runs almost continuously from October through May, causing rapid wear on ignition components and inducer motors. Another sign to watch for is frequent cycles where the heat kicks on and off every few minutes; in our area’s 1920s-60s housing stock, often found near Astor Park, this could mean an aging furnace has a cracked heat exchanger or restricted venting from heavy snow accumulation. If your energy bills are rising despite keeping the thermostat moderate, your older 80% AFUE system may simply be unable to handle the local climate predictably anymore.

A few locally specific checks can often resolve heating issues during our long winter months. First, check your outdoor furnace exhaust and intake vents; with over 50 inches of annual snowfall, blowing drifts can easily block these pipes, causing a modern high-efficiency furnace to shut down for safety. Next, examine your air filter, especially if you use a wood-burning stove for supplemental heat during fall or spring, as wood smoke particulates can clog high-MERV filters much faster than usual. If your AC isn't cooling well during a humid July afternoon, ensure the outdoor condenser isn't restricted by cottonwood seeds or grass clippings, which act like a blanket against the Fox River humidity. If these steps don't restore operation, or if you suspect a gas ignition issue or electrical failure, you must stop and contact a professional licensed HVAC company.

The primary service in this market is high-efficiency gas furnace installation and maintenance, as our 160-plus freeze days make reliable heating a life-safety priority. Technicians frequently perform 96% AFUE furnace upgrades to help homeowners manage the extreme energy costs associated with local winters. Specialized indoor air quality and humidification services are also vital; since our winters are so dry, whole-home humidifiers are often retrofitted into basement ductwork to prevent respiratory issues and preserve woodworking. Additionally, many local professionals specialize in boiler and radiator repair for the older homes in the Astor Park and Navarino neighborhoods, where original 1920s heating systems require unique expertise to maintain. In newer developments, you'll also see high demand for AC tune-ups focused on cleaning coils of spring pollen and river-valley dampness.

To find the best HVAC company in Green Bay, start by verifying that any technician arriving at your door holds Wisconsin state licensing and NATE certification. These credentials ensure the professional understands how to properly size systems for our 7,400 heating degree days and can safely handle gas and electrical components. A true local expert will also be well-versed in Focus on Energy rebates, helping you maximize the value of high-efficiency investments. Before signing a contract, confirm they carry current general liability and workers' compensation insurance. To make your search easier, Best Pick Reports provides a list of companies that have passed a strict 6-step merit-based qualification process, including annual verification of licenses and independent customer satisfaction surveys. Using this free resource also provides you with a $2,500 guarantee on labor costs for added protection during a major system replacement.