Black-Haak Heating
Fast Response
Reviewers confirm quick response
Not Verified
No emergency data in reviews
Unknown
Based on review analysis
1 concern
Critical issue: Technician left gasket out of furnace during service; company refused warranty coverage and demanded $99 service call to fix their own error, citing 'not under warranty'
Trust Score: 0/100 · Based on 7798 reviews
Our Verdict
#12 of 15 in Appleton, WI
- Drain and sewer work
- You're highly price-sensitive
Hire if: You need fast same-day or after-hours response
Hire if: You need a plumber who actually shows up when scheduled
Caution if: You need predictable, consistent service across every visit
Caution if: You need rock-bottom prices with zero flexibility on the quote
Caution if: You need detailed walkthroughs and written estimates before work starts
How they score across what matters
Based on 5 reviews analyzed. Click a row for the quote that best illustrates the score.
What they do well (and don’t)
Green means reviews confirm they’re good at it. Red means reviewers flag issues. Gray means no reviews talk about it yet.
What 7798 Reviews Tell Us
Emergency Response
4 of 5 reviews praise same-day or next-day service and fast response times, with one reviewer noting arrival within hours of initial call
What To Watch Out For
Pricing acknowledged as 'a little bit more expensive' by satisfied customer, and one reviewer noted service call charge of $99 for technician-caused error
Critical issue: Technician left gasket out of furnace during service; company refused warranty coverage and demanded $99 service call to fix their own error, citing 'not under warranty'
Quality & Professionalism
Technicians consistently receive praise for knowledge and clear explanations of work and options, with 3 reviews specifically highlighting professional communication
Work quality is warrantied and highly regarded, with one long-term customer continuing service after decades due to quality assurance
Communication
Technicians consistently receive praise for knowledge and clear explanations of work and options, with 3 reviews specifically highlighting professional communication
Pricing acknowledged as 'a little bit more expensive' by satisfied customer, and one reviewer noted service call charge of $99 for technician-caused error
Pricing
Pricing acknowledged as 'a little bit more expensive' by satisfied customer, and one reviewer noted service call charge of $99 for technician-caused error
Customer reviews
Reviews from Google, Yelp & more
Black Haak began in this very house I now live where Floyd Blackie once lived. His work shop was our garage. I still have Black Haak serive my heating. They are a little bit more expensive, however, their work is very good, and warrantied. I prefer to avoid problems calling someone after hours spending more money because the job was not correct. Ive had some wiring too and I was pleased with that work as well.
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 💯
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.
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.
Had an issue with a toilet not flushing properly. Went to website, which was extremely easy to navigate and schedule an appointment. They followed up with a call shortly after, offering to have someone come out same day if it worked for us(this was a Friday). The person I spoke to on the phone was knowledgeable and super helpful. Mario arrived a couple hours after my initial call. He was polite, courteous, professional, honest, respectful, and clearly knowledgeable. He had our problem figured out right away, and his explanation was perfect for me to understand. He then gave me options for a solution, which all made sense and were perfectly reasonable. I was also able to also get his thoughts on another small plumbing project we are looking at for our home. Service charge, in our opinion, was perfectly reasonable and we had zero issues paying it. We are probably going to end up saving that amount, or more, due to the advice given to us anyway. We will absolutely be calling Black Haak for future plumbing work. 100% satisfied and met all our expectations. Every single person I dealt with was amazing. To me, Black Haak is a "treat the customer well and do quality work to get customers" type of business.
Business details
Service area
Based in Appleton. Serves 5 nearby cities within 20 miles:
Black-Haak Heating