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

Local Reviews
for sherwood, wi

Rated 5.0 out of 5 stars based on 17 customer reviews

Smoke alarm issue

Pleased with how quickly you came....and my dog is very happy he isn't hearing that noise any more! Service was professional and thorough. Mike checked the other detectors as well and took out the locking pin so that I can change the batteries myself if need be.

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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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Job Locations
for sherwood, wi

Hunter D.

Hunter D. Job Checkin

Performed the level 2 package and fireplace cleaning. Furnace: Burners and flame sensor are clean. Heat exchanger looks good. Combustion readings were normal. No CO detected in the air. Drain is clear. Heat rise was 44°. AC: No leaks detected. Electrical components tested good. Condenser coil is clean. Refrigerant pressures were normal. Subcool was 8° with a 17° temp split. Fireplace: I removed and cleaned the glass and cover screen. Cleaned off the logs, pilot assembly, and lower compartment. I also put in new embers and checked the fan bearings, they were good. All HVAC equipment is operating properly.


Dan E.

Dan E. Job Checkin

Ac clean and tune. Customer is stating that ac condenser froze up after tech was here last time to change filter and cleaned condenser. I cleaned electrical compartment. Used coil cleaner on condenser coil. Hooked up gauges and checked pressures and temps. Subcooling was a little high and indoor coil temp was at 30 degrees. Added 9 oz of R410-A refrigerant. Coil temp went to 38. Indoor split was 18. System operating normal at this time. Customer will watch system to see if added refrigerant made a difference in outdoor freeze up over nighttime hours. Office will follow up. Job complete.


Mike W.

Mike W. Job Checkin

Replacd Exterior Spot Lights.


Hunter D.

Hunter D. Job Checkin

Came out to check a notice on the thermostat. The message was a notification about the outdoor temp sensor. Customers don’t have one so I took it off in the thermostat settings. I also helped the customers connect their thermostat to the Honeywell app and set up their heating/cooling thermostat schedule. I recommended an AC cleaning in the near future. Everything is working at this time.


Dan E.

Dan E. Job Checkin

Furnace start up. Checked inlet and outlet gas pressures. Adjusted to maximize efficiency. Checked electrical connections. Checked for gas leaks, none found. Checked venting, ok. Temp rise normal. Changed filter. System operating normal at this time. Job complete.


Hunter D.

Hunter D. Job Checkin

I came out to check the pressures. Customer said she noticed a banging noise downstairs and that there were water stains in her basement ceiling tiles. I confirmed the noise to be duct work expanding. The unit was a little overcharged. I removed half a pound of 410 and everything evened out. I couldn’t find any new wet spots on the ceiling during my visit. Told customer to call if they notice it again.


Dan E.

Dan E. Job Checkin

Ac clean and tune. Checked for leaks on indoor coil with refrigerant sniffer. Some indications of possible leak found. They were small indications. Cycled system. Checked compressor and fan motors with megometer. Both ohmed at 60 ohms. This is in the caution range. 5is indicates that the motors are starting to fail and will fail in the future. Used coil cleaner on condenser coil. Hooked up gauges and tested pressures and temps. Both were ok. System appears to currently have the correct charge at this time. Checked indoor split, normal split found. Average life of this unit is 14 years, this system is worn. Due to age, condition and cost to repair, second opinion is recommended. Future failure is expected. Job complete.


Dan E.

Dan E. Job Checkin

Ac clean and tune. Checked and cleaned electrical compartment. Tested compressor and fan motor. Both tested low. Used coil cleaner on condenser coil. Hooked up gauges and tested pressures and temps. Found 0 subcooling and 3 superheat. Indoor coil temp was 32. System is low on charge. Tested temp split. Temp split is 13. System is worn and has issues that will lead to high utility bills and failure. Second opinion is recommended. System is cooling at this time. Cooling poorly. Job complete.


Mike W.

Mike W. Job Checkin

Troubleshot breaker tripping. Found there to be a groundfault in the wire between two receptacles in the office. Cut off compromises wire and pushed into the wall. Fished a new wire between the receptacles. Circuit is functioning normally now.


Julian  D.

Julian D. Job Checkin

Performed AC safety check; sniffed the evaporator coil for possible leaks, inspected electrical compartment as well as tested both the capacitor and compressor both components did test weak, I then cycled the system on to verify operations. This system is currently operating but due to the age and condition as well as the condition of previous furnace i recommend a full clean and tune so we can hook up gauges to verify a proper charge. Office to follow up to schedule AC clean and tune. Job complete


Julian  D.

Julian D. Job Checkin

Performed furnace clean and tune; removed and cleaned the burners along with the flame sensor, tested both the igniter and inducer motor and both tested weak, checked gas pressures as well as performed a combustion test verifying no CO in the airstream. Found that zone damper #1 was grinding inside the duct 8x20. This system is currently operating but future failure is expected. Job complete


Mike W.

Mike W. Job Checkin

Troubleshot smoke detectors beeping. Detectors were giving low battery signal. Removed batteries and checked them. They were still reinstalled and ensured proper contact with the terminals. Detectors stopped chirping.


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 furnace on and checked gas pressures, as well as performed a combustion test verifying no CO in the airstream. Holly did request that we replaced the #35 aprilaire water panel. I did notice the damper for the humidifier was in the summer position because of this the system was not operating. This system is currently operating normal at this time job complete


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.