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

Local Reviews
for sherwood, wi

Rated 5.0 out of 5 stars based on 16 customer reviews

Great technicians

I would recommend Black Haak. They are very professional, helpful and through. Julienne, Evan Devin and Dan were all great! Thanks for the great work.

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GREAT SERVICE

EVERYTHING WAS NEAT AND CLEAN, EXPLAINED EVERYTHING

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Awesome Servicewe both

We both agree that Julian is a great representative of Black Haak. He was polite, efficient, and very knowledgeable. We would be pleased to have him service our furnace & fireplace on a yearly basis.

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installers were very polite and professional

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AC tuneup

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Excellent Service

Black-Haak installed my furnace and AC when I built my house. I've had them maintain and service my system ever since and have always been very pleased with their expert knowledge and quality of service. Their pricing is very fair and they are very honest up-front about the cost of things. I know I can rely on them and will be a lifetime customer! The technicians are VERY friendly and helpful, they are great to work with!

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Excellent service

Bill and Tim did a great job doing some correction work on our installed HVAC system. They were professional, personable, conscientious.

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Annual Maintenance

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Great Service

My questions were answered and then some !

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Service tech was very informative and polite.

Dan did a very nice job and answered any questions that I had.

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Job Locations
for sherwood, wi

Julian  D.

Julian D. Job Checkin

Replaced ventor motor and collector box. Cycled the system on to verify operation. Everything is operating normal at this time job complete


Dan E.

Dan E. Job Checkin

Furnace clean and tune. Cycled system. Checked heat exchanger, found heavy rust in all three shots. No visible cracks found, but heavy etching and deep rust spots where cracks will form were found. Found flame sensor worn. Ventor motor bearings are worn and motor is running very noisy. No leaks found in system. Checked for CO in airstream, none found. Normal levels of CO and XS air found in exhaust. Average life of this unit is 14 years, this system is 15+ years old and worn. Future failure is expected. Due to age, condition, and cost to repair, second opinion recommended. Blower motor worn and loud as well. Job complete.


Julian  D.

Julian D. Job Checkin

Performed furnace clean and tune; inspected the exhaust and intake PVC ensuring all connections were secured, I then removed and cleaned the burners along with the flame sensor, next cycled the system on and checked gas pressures, as well as performed a combustion test verifying no CO in the airstream. This sytem is currently operating normal and heating at 50 degrees at this time. I did take a snapshot of the systems blower wheel this picture shows a substantial amount of dust on the wheel this could potentially cause up to 30% reduction of efficiency on the system I did include an estimate for an electronic air cleaner to bring these levels of dust down in the home. Job complete UNPAID


Julian  D.

Julian D. Job Checkin

Performed furnace clean and tune; inspected the exhaust and intake PVC ensuring all connections were secured, removed and cleaned the burners along with the flame sensor, cycled the system 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 57 degrees at this time. Due to the amount of dust build up on the blower wheel I highly recommend upgrading to an electronic air cleaner to bring these levels of dust in the home down. Job complete


Julian  D.

Julian D. Job Checkin

Performed furnace clean and tune; 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 performed a combustion test verifying no CO in the airstream, replaced #35 water panel and hepa air filter pre filter. This system is currently operating normal and heating at 59 degrees at this time. Job complete


Anthony N.

Anthony N. Job Checkin

Was here for a furnace start up. Performed preferred customer furnace start up. Completed furnace start up form. Furnace is running normally at this time. The customer would like a call in the spring to set up a possible air conditioning cleaning.


Julian  D.

Julian D. Job Checkin

Connected T6 Tstat to phone. Job complete


Dan E.

Dan E. Job Checkin

Customer had issue with his geofencing on his thermostat. When he is home his phone and thermostat shows him as away. When you go to the app, it shows him as home and away but runs the program as away. Exchanged under warranty. Furnace clean and tune. Cycled system. Checked heat exchanger. Found rust in heat exchanger, no cracks seen at this time. Checked and cleaned burners and flame sensor. Checked and cleaned sparker. Checked for CO in airstream , none found. Normal levels of CO and XS air in exhaust. Blower is very loud on start up. Possible motor or capacitor issue. System is old, but operating normal at this time. Job complete.


Craig W.

Craig W. Job Checkin

Completed installation of Aprilaire model 600 bypass humidifier. Mounted unit on the supply plenum and ran the 6” bypass to the return air drop ductwork. Connected a 1/4” copper water supply line between the hot water side of water heater and the Aprilaire. Ran a drain hose from unit to the floor drain. Mounted the humidistat to the return air duct to get an accurate relative humidity reading from whole house. Ran and connected all related low voltage wiring needed to operate the new Aprilaire 600. Run tested the humidifier and everything is working properly. Thank you for choosing Black-Haak. Please take a moment to fill out our online survey.


Julian  D.

Julian D. Job Checkin

Performed furnace start up; started by inspecting the exhaust and intake PVC ensuring all connections were secured, I then did a leak search on the gas line, next I cycled the system on and checked gas pressures did adjust gas pressure down to 3.5Inwc, also performed a combustion test verifying no CO in the airstream. Customer stated he did not like the program feature on the Tstat so I removed this option. This system is currently operating normal at this time. Job complete


Hunter D.

Hunter D. Job Checkin

Installed new furnace. Removed the old furnace. Installed the new one. Attached to the existing venting, gas piping, and duct work. Mounted new Wi-Fi thermostat to the wall. The system is operating properly but need a service technician to return to do the start up.


Julian  D.

Julian D. Job Checkin

Performed furnace safety check; I cycled the system on and first performed a powder test on the heat exchanger and did receive blowback from all 3 cells, I then ohmed out the igniter, lastly performed a combustion test and did get high levels of CO and excess air in the exhaust. At this point this system is unsafe for operation. Due to age, condition, and cost to repair replacement of the system is recommended. Job complete second opinion scheduled with Dan F


Dan E.

Dan E. Job Checkin

Cut in humidifier module. Piped to return duct. Cut in and finished pipe. Attached water line and open it to water heater, no leaks found. Wired and installed control. Wired up transformer to line power. Wired to terminal strip of furnace. Ran and attached drain line. Tested humidifier. System operating normal at this time. Furnace clean and tune. Cycled system. Checked her exchanger, ok. Checked and cleaned burners and flame sensor. Checked for CO in airstream, none found. Checked and found normal levels of XS air and CO in exhaust. System operating normal at this time. Job complete.


Julian  D.

Julian D. Job Checkin

Performed furnace clean and tune as well as fireplace cleaning; started by inspecting the exhaust and intake pvc ensuring all connections were secured, I then removed and cleaned burners along with the flame sensor, Next I cleared out the drain line, I then cycled the system and checked gas pressures did make adjustments on second stage, I then performed a combustion test verifying no CO in the airstream as well as replaced the electrostatic filter. We cycled the fireplace on and cleaned off the glass as well as added glow embers to the flame as well. These systems are currently operating normal at this time job complete.


Mark P.

Mark P. Job Checkin

Installed new gas furnace. New gas piping, venting, drain and line voltage. Furnace was ran and tested.