Black-Haak Heating - HVAC services in Greenville

HVAC

Black-Haak Heating

Total Residential & Commercial Comfort

4.9 (7492)

Our Story

Black-Haak Heating, established in 1956, is a family-owned company serving the Fox Valley and surrounding areas in Wisconsin with heating, cooling, electrical, and plumbing services for both residential and commercial clients. They provide 24/7 emergency repairs, installations, and maintenance without overtime charges on weekends, using expert technicians trained through an apprenticeship program. With an A+ BBB rating and a focus on customer satisfaction, they offer solutions like geothermal systems and indoor air quality improvements to ensure total comfort.

Our Specialties

AC Repair & InstallationFurnace Repair & InstallationGeothermal Installation and MaintenanceIndoor Air Quality SolutionsElectrical ServicesPlumbing ServicesGenerator InstallationCommercial HVAC Services

Services

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Service Area

Based in Greenville, WI

Serves within 30 minutes drive from Greenville

Client Reviews

4.9 from 7492 reviews on Google

Back in December 2024 I had my gas valve replaced by Black-Haak. They came out right away with many notifications, got the job done without issue, and they offered me a free cleaning. I took them up on the free cleaning a year later in December 2025. The same technician was back again, she said it was fine at the moment but noticed a potential crack inside that could cause me issues in the future. Now March 2026 I noticed that the furnace did not prove ignition a few times so I went to look inside the panel and noticed that this black rubber gasket was not it the place. The flame inside was very orange and when I would push the gasket against the hole it would go back to a nice blue flame. So I called Black-Haak to let them know that the technician had accidentally left this gasket out. The receptionist told me that it would be $99 to get someone out there to fix this. I told her the situation again and explained that the technician had left the gasket out when they did either the gas valve or the cleaning. No one else had ever touched the unit. If this was work that I had done but not finished, I would run right over and get it done. Unfortunately this receptionist instead told me that it was not under warranty. I put the gasket back where it should have been myself and now I will be looking for a HVAC contractor with integrity.

Matt Schmeichel 4 weeks ago

We had some issues getting our bathroom fan and light on and Jonathan was able to make it over the next day in the morning to get everything sorted out. He was very professional explaining what was going on and what he was going to be doing. He was friendly and got the job done in no time. I was very satisfied with the service, I will definitely be calling black Haak again for any future services I may need.

Sandra Sanchez a month ago

John Burkhart Jr was my plumber. He was very knowledgeable and has years of experience. John took the time to explain the issue and gave me my options. I'm very happy with the service repair and it was done the same day! Highly recommend this locally owned company. Support our local businesses 💯

Lynn a month ago
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Common Questions

Black-Haak Heating provides expert AC and furnace repair for all makes and models in Greenville and the surrounding Fox Valley areas, ensuring quick diagnostics and fixes to restore your system's efficiency. Our licensed technicians use industry-standard tools to address issues like refrigerant leaks or blower motor failures without overtime charges on weekends. We also offer 24/7 emergency services to handle breakdowns outside business hours promptly.
For furnace installation in the Fox Valley region, Black-Haak helps homeowners select energy-efficient models like high-efficiency gas furnaces or geothermal systems tailored to your home's heating load and ductwork configuration. Our team handles the complete process from sizing calculations to permitting and integration with existing thermostats for optimal performance. With over 65 years of experience since 1956, we ensure installations meet local codes and include startup testing for reliable operation.
Black-Haak offers 24/7 emergency heating repair services throughout Appleton and the Fox Valley, with technicians on call to address urgent issues like thermostat failures or pilot light problems in furnaces and boilers. We prioritize safety by using proper PPE and follow ASHRAE guidelines during repairs to prevent further damage. Homeowners appreciate our same-day service and no overtime fees on weekends for faster resolution.
Black-Haak specializes in geothermal installation and maintenance for residential and commercial properties in Greenville, WI, utilizing ground-source heat pumps that leverage stable earth temperatures for efficient heating and cooling. Our experts conduct site assessments to determine loop configurations, such as vertical or horizontal, ensuring compatibility with your building's square footage and soil conditions. This eco-friendly option reduces energy costs and qualifies for potential rebates while improving indoor air quality.
For electrical services during home remodels in Green Bay and surrounding areas, Black-Haak provides qualified electricians for tasks like new construction wiring, outlet installations, and lighting upgrades to code-compliant standards. We handle everything from panel upgrades to integrating smart home systems, ensuring minimal disruption with courtesy calls and on-time arrivals. Our family-owned team, backed by an A+ BBB rating, focuses on safety and customer satisfaction for seamless project integration.
Black-Haak offers plumbing repair services in Oshkosh, WI, including water heater repair, boiler repair, leak detection, and drain cleaning for residential and commercial clients. Our technicians use advanced tools like video pipe inspection to identify clogs or corrosion in sewer lines without unnecessary digging. With our 24/7 availability and priority scheduling, we resolve issues efficiently to prevent water damage and maintain system longevity.
Black-Haak provides indoor air quality solutions in the Fox Valley area, such as air purification systems that filter out pollen, dust, and microorganisms to reduce allergens and improve HVAC efficiency. We install UV lights, HEPA filters, and whole-home humidifiers integrated with your existing furnace or AC for balanced humidity control. These services help mitigate indoor pollutants, especially beneficial during Wisconsin's humid summers and dry winters, enhancing overall comfort and health.

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Greenville, WI

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