N967 Quality Drive
Greenville, WI 54942
920-757-9990

Local Reviews
for oshkosh, wi

Rated 4.8 out of 5 stars based on 46 customer reviews

Routine furnace maintenance

Seemed very thorough, spent 90 min doing routine maintenance. Very quiet, shy demeanor; needs to smile more.

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I’m in good hands

Dan is great, knowledgeable, and friendly. I feel like I have a good company to take care of me and my HVAC needs. Thanks Dan!

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Great service

Second time using Black Haak and both times had great experience. Technician was knowledgeable, helpful and friendly.

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Kind and patient

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Customer Satisfaction Review

Julian was extremely personable and professional. Did his job quickly and was very friendly and respectful. I enjoyed talking with him.

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Excellent service.

Rep on time, polite and focused on job.

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Black Haak is the BEST ~

They installed 4 units in 4 different locations over the past 8 years with one being a Big Broiler Unit,,, Excellent people at Black Haak ~,,, A+++++~

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New Furnace heat test

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Great service!

Very profesonal.

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Great service

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Job Locations
for oshkosh, wi

Brad G.

Brad G. Job Checkin

Install boiler. Drained and removed old boiler and old water heater. Removed some of the existing piping. Installed the new boiler on the wall and connected to the existing piping. Installed new indirect water heater to replace old gas fired water heater and connected indirect to the boiler. Filled and purged air from the system. Ran and tested boiler operation and indirect function. All systems operating properly at this time.


Dan E.

Dan E. Job Checkin

Installed aprilaire humidifier. Cut in for unit. Piped bypass to supply duct. Wired in control. Wired to transformer and furnace terminal board. Ran drain line to drain in basement floor. Unable to hook up water and test due to lines are PEX lines. Johnny will return and run water line and instruct on use. Cycled unit. System operating normal at this time. Furnace clean and tune. Customer upgraded to furnace clean and tune. Cycled system. Checked heat exchanger, ok. Cleaned and checked burners and flame sensor. Ok. Checked igniter, tested ok. Checked and adjusted gas pressures to maximize efficiency. No CO found in airstream. Normal levels of CO and XS air found in exhaust. System operating normal at this time. Job complete. Office to schedule return visit.


Hunter D.

Hunter D. Job Checkin

Move filter rack to the other end,add 4supplies and 1 double return,3-2” 4x12 sleeves,2-10x8 patches and one 14x8patch Completed installation of (3) 4”x12” supplies out from bottom of existing supply ductwork for the basement bath, and 2 rooms. Added (1) 4”x12” sidewall supply off existing duct to the family room of the basement as well as a 30”x6” low side wall return air. Reconfigured the return air drop ductwork to allow access to the filter from the front of the furnace now that there is a wall behind the furnace. We also drilled a 4” hole through the house and installed the customer provided vent hood for the basement exhaust fan. We left the 3 white supply registers but had to order the brown ones and will deliver them when we get them. Thank you for choosing Black-Haak. Please take a moment to fill out our online survey. Thanks, Craig.


Anthony N.

Anthony N. Job Checkin

Was here for a furnace cleaning. Performed preferred customer furnace cleaning. Completed furnace cleaning form. The furnace is running normally at this time.


Anthony N.

Anthony N. Job Checkin

Customer has a package cleaning. Was here for the furnace portion of the cleaning. Performed preferred customer furnace cleaning. Completed furnace cleaning form. The furnace is running normally at this time.


Craig W.

Craig W. Job Checkin

Completed installation of 30’ of Schwank Infrared tube heat. Removed all but a small section of original tube heat which we couldn’t reach safely with scissor lifts. Installed new tube heat near front of the shop, venting it out the sidewall to north. Used one of the existing 1/2” gas lines from the old tube heat to feed new one. Mounted the thermostat just outside of the office door in the shop and ran wire up to tube head unit. Test fired the tube heater for proper operation and showed employees how to operate it with the thermostat. Thank you for choosing Black-Haak. Please take a moment to fill out our online survey.


Brennan L.

Brennan L. Job Checkin

Repair venting leak. Cut out leaking joints. Installed and glued new joints to existing venting. Venting is no longer leaking. All systems operating properly at this time.


Anthony N.

Anthony N. Job Checkin

Was here for a furnace cleaning. Performed preferred customer furnace cleaning completed furnace cleaning form. The furnace is running normally at this time. The customer has upgraded to the package cleaning. Office to call to schedule an appointment to clean the air conditioner. Customer would like it cleaned in April if he could.


Julian  D.

Julian D. Job Checkin

Performed first year furnace cleaning; inspected the exhaust and intake PVC ensuring all connections were secured, I then removed and cleaned the burners along with the flame sensor, cycled the sytem on and checked gas pressures, as well as performed a combustion test verifying no CO in the airstream. This system is currently operating normal and heating at 54 degrees at this time. Job complete


Julian  D.

Julian D. Job Checkin

Performed first year furnace cleaning; inspected the exhaust and intake PVC ensuring all connections were secured, I then removed and cleaned off the burners along with the flame sensor, next I cycled the system on and checked gas pressures and found that second stage was not engaging I did have to reconfigure the Tstat to operate a dual stage furnace, also performed a combustion test verifying no CO in the airstream. Due to the amount of dust build up on the blower wheel I highly recommend upgrading to an electronic air cleaner to bring the levels of dust in the home down. This sytem is currently operating normal at this time and heating at 46 degrees. Job complete


Hunter D.

Hunter D. Job Checkin

Performed level 2 furnace cleaning. Burners and flame sensor are clean. Heat exchanger looks good. Gas and exhaust levels are normal. No CO detected in the air. Heat rise was 60 degrees. HEPA filters, furnace filter, and the water panel were replaced. I checked the thermostat for the message. It was only a notification for an annual furnace check. Unit is operating normally at this. Thank you for choosing Black-Haak! Please take the time to complete our online


Hunter D.

Hunter D. Job Checkin

I came out to replace the bad pressure switch. Once the broken part was replaced, the furnace began heating again. I cycled the system three times to ensure there wasn’t any other failure. Unit is operating normally at this time.


Scott K.

Scott K. Job Checkin

12/18/18 removed old furnace. Installed new single stage daikin furnace. Added metal between duct and furnace. Also put a new drop elbow and filter rack. Filter size 16x25x1. Reconnected electrical and thermostat wiring to new furnace. Ran a new exhaust pipe outside for furnace to vent and ran one for intake. Reconnected the gas piping. Ran new drain hose from furnace and coil. Started furnace and it is running and draining properly. Thank you for choosing Black-Haak for your heating needs.


Anthony N.

Anthony N. Job Checkin

Was here for a furnace cleaning. Performed preferred customer furnace cleaning. Completed furnace cleaning form. Furnace is running normally at this time.


Dan E.

Dan E. Job Checkin

Fireplace clean and tune. Cleaned glass. Cycled system. Would not light. Cleaned flame sensor and gas supply port. Cleaned glass, walls, and under unit. Cycled system, gas valve is very sluggish, it took several minutes to light flame. Recommend replacement of gas valve. Office to quote replacement of gas valve. System is heating and did light several times from switch. Job complete.