Customers consistently praised the friendly, professional, and knowledgeable service provided by technicians.
Efficiency
Many reviews highlighted the quick response times and efficient service, especially in emergency situations.
Communication
Customers appreciated the clear communication regarding service details, pricing, and follow-up.
Expertise
Technicians were frequently noted for their expertise and ability to explain issues and solutions clearly.
Overall Satisfaction
Overall, customers expressed high satisfaction with their experiences and recommended the business to others.
DW
dennis warns
2 days ago
5.0
About 7 AM the other morning I realized it was cooler than normal in the house. Looked at the thermostat and it read 63°. I realized my furnace did not kick in on the schedule in the morning. I tried a few things and the furnace still didn’t work. I called Black Haak for service and was put on the schedule for that day. Finally, after trying something else, the furnace started up. But I still needed to find out why it didn’t work. Johnny came to the house and was very personable. He explained everything that was happening, how everything worked and what he was doing to find the problem. He also informed me what to look for and what to do in case something should happen again. After doing a full reboot and making sure that everything was firing up correctly, he found a potential problem. And if it wasn’t the problem this time, it could be in the future. He decided to take care of it at this time. He got the parts ordered, and it was fixed the next day. He met all my expectations, especially for an emergency visit. He did a great job. And, now I know how a furnace works. You’re never too old to learn. Thank you, Johnny.
GO
Guy Oconnell
4 days ago
1.0
First discrepancy, they don't give credit for mailing vouchers/coupons.
2nd Discrepancy, Negative comments on my "outdated 21 year old furnace, parts may not be available, we live in a disposable environment, these systems aren't designed to last a lifetime.
3rd Discrepancy Mother Board defective, Igniter replacement.
Service Call $156.00.
Repair/Replacement of parts $1250.00.
CALLED FOR A SECOND OPINION
SERVICE CALL MINUS ADVERTISING COUPON $99.
WRITTEN QUOTE WITH SYSTEMS DIAGOSTICS AND REPLACEMENT OF PARTS $ UNDER $400.00.
MS
McKenzie Springer
Jan 5, 2026
5.0
I have had a lot of work done at my house by Black Haak over the last year and a half (both urgent & not) and have never had a bad experience, which is why they are my go-to when I need something done! They have done work while I was not home & I never was worried. I told them I have cats and to make sure they don’t get out and I trusted they would do so. They’re very responsive, do great work, & are always willing to answer questions & explain everything to me once they’re done.
SV
Subru Vang
Jan 5, 2026
5.0
Our furnace wasn’t working so I called the afternoon of 12/23/2025 and Morgan came out right away. I received a text along with a picture so I knew who would arrive at my doorstep. She was very knowledgeable and was able to point out different mechanisms of the furnace that wasn’t working properly. She immediately noticed that the pressure switch tubes were not connected to blower motor/inducer. A prior service visit from another company forgot to plug them back in. After properly connecting the tubes she tested and noticed that the fan relay was not triggering the fan to run when set on “auto.” We didn’t realize since the fan was always set to “on.” She only charged us for the service visit. Thank you Morgan for being available the day before Christmas Eve. I love that Black Haak has a crew who is always available and super friendly.
JH
Julie Henke
Dec 27, 2025
5.0
I was very happy with Black-Haak Plumbing (Mark Verhagen) for service on my non-working, older water softener on 12/3/25.
Out of a few different Plumbing businesses that I called, Black-Haak was the only one who could come the soonest (the next day) & their pricing was comparable to the other businesses.
Also, even though my water softener is 23 years old & probably should be replacing it, instead of insisting on selling me a new unit, & at my request, Mark troubleshooted it & blew out the rust blockages that were causing the problem, then did a manual regeneration, which seems to have fixed the problem, at least for now anyway, so I was happy paying $157 versus $2,000.00!
I also liked it that Mark was very knowledgable, nice, & driving quite a distance to my house wasn't an issue!
Frequently Asked Questions About Black-Haak Heating
What services does Black-Haak Heating provide?
Black-Haak Heating offers heating, cooling, electrical, plumbing, and geothermal contractor services for homes and businesses in the Fox Valley.
What areas does Black-Haak Heating serve?
Black-Haak Heating serves several cities in the Fox Valley including Appleton, Darboy, DePere, Green Bay, Kaukauna, Larsen, Little Chute, Menasha, Neenah, Oshkosh, Winneconne, Brillion, and Fox Crossing.
What are the business hours of Black-Haak Heating?
Black-Haak Heating operates Monday through Friday from 7:00 AM to 6:00 PM, and on Saturdays and Sundays from 7:00 AM to 12:00 PM.
Is Black-Haak Heating accessible for customers with disabilities?
Yes, the business has a wheelchair accessible entrance, parking, seating, and restroom facilities, as well as a unisex restroom available.
Can customers visit Black-Haak Heating without an appointment?
Yes, Black-Haak Heating does not require appointments for their services.
Does Black-Haak Heating offer 24-hour services?
Yes, Black-Haak Heating serves Northeast Wisconsin 24 hours a day for urgent heating, cooling, electrical, or plumbing needs.
Where is Black-Haak Heating located?
Black-Haak Heating is located at N967 Quality Drive, Greenville, WI 54942, USA.
What nearby services can customers access when visiting Black-Haak Heating?
Nearby, customers can find services such as Joe's Collision & Restoration for auto repairs, Diamond H2O for plumbing and specialty groceries, and U-Haul Neighborhood Dealer for storage and moving needs.
Are there dining options close to Black-Haak Heating?
Yes, customers can enjoy nearby dining at Burger King for fast food or Aunty's Cafe for Chinese and Asian cuisine.
What industrial and business services are near Black-Haak Heating?
Nearby industrial and business services include Johnson Controls for fire protection, Sure Controls Inc. for engineering services, Festo as an industrial company, and Storage Battery Systems, LLC for industrial equipment and batteries.