403 Headquarters Dr. Unit 5
Millersville, MD 21108
(443) 396-3797

Local Reviews

Rated 4.9 out of 5 stars based on 741 customer reviews

Great work

Came out and fixed mistakes I made. Fast and did a great job explaining it while doing the work

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Excellent service.

Alex explained what he was doing; gave me options; was friendly and professional. I would request Alex if I needed an electrician in the future. Re price: have no idea what the going prices are but don''t think your price was out of line.

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Excellent Service

Michael was pleasant, respectful, helpful, and on time. Will keep Haas & Sons in my phone.

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Good Walk-thru, Written Pricing Estimate?

Very good walk-thru of items to be done and the electrician did go over their estimate to do the items requested before he left. But still haven't received my written estimate via email as I requested.

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Excellent service!

Extremely thorough! Very personable! And took the time to explain everything that he was going to be doing and what he ultimately did!

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Attic fan service

Nick provided excellent service in installing my new attic fan. He was knowledgeable about the product and was able to answet all my questions. In addition to the install, he explained the features and helped me set up the app correctly.

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Excellent service

Great service Quick results

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Fantastic service

Wow, Dennis found my electrical problem in 30 seconds! He was fantastic and knew his stuff. I definitely recommend him! Great job!

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Excellent Service

HAAS is our choice for quality work. Alex makes short work of it and is friendly and always willing to answer questions. Give HAAS a call. You won’t be disappointed.

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Excellent Service

Alex is incredibly knowledgeable and professional. He helped guide us through the various options available and was prompt with inspection and service. Will definitely come back to Haas & Sons for any future electrical needs and ask for Alex.

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Outstanding service

What a gentleman. I was totally impressed with Mike. Perhaps the best service rep I have had in well over 50 years.

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Great service, great tech

My technician, Michael, was extremely professional and knowledgeable. I would recommend Haas and Sons.

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Knowledgeable Tech!

I was very pleased with Dennis’ technical understanding of the electrical modification I was seeking. He thoroughly explained both of my options and gave me quotes. Dennis and his assistant were polite, pleasant, and thorough.

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Great job!

Michael arrived on time and did great work. It's great to have our jobs all done. We would definitely call Haas again if we need work done in the future.

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Service was great. Price was great.

Very professional and very reasonable!

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Job Locations

Genny G.

Genny G. Job Checkin

Today’s visit was for annual maintenance inspection. I saw a few things of note that needed to be corrected. Please see below for work performed. Also, see attached estimate if you choose to move forward with dedicated circuit for treadmill. Replace breakers for two pole breakers Replace flood light on back deck Bond water heater Replace exterior receptacles


Alex W.

Alex W. Job Checkin

The customers originally called because they are selling their home and they were experiencing an issue with the three-way switch controlling the kitchen lights they also said they had a burning smell coming from one of the switches after investigating the issue I found with the internal parts on the three-way switch was burning up so is my recommendation that we change that switch but since it is part of the freeway system it would be smart to change the other switch as well as the customer agreed so we replaced both a three-way switches and hooking the wires around three way switches clamping down the wire and tighten down the screw to ensure the best and safest possible connection Customer also had customer supplied smoke alarms and carbon monoxide smoke alarm combos to be put up throughout the home they had one in each bedroom upstairs and carbons one on every floor so we removed and replaced all those we also cut all the wires back and re-spliced everything due to the fact that t


Alex W.

Alex W. Job Checkin

Customer originally called because the a/c unit was no longer working. When i came out to diagnose the issue i found that the disconnect to the a/c unit had no power going to it. I also noticed that the pull out level was upside down. So i traced the wires from the disconnect to under the deck where i found a cut wire that was energized. So i traced that back to a junction box in the utility room near the panel. It appears someone took the wires apart in the junction box and hooked up the wrong wires to the a/c unit. After taking the wiring the the junction box correctly i found that the disconnect had 240 volts going from its line side and its load side making it so the circuit was back to working. But after that the a/c still was having trouble turning on making me realize it was now an a/c issue. After the hvac technician comes out to fix the unit he will have to turn the breaker back on as we left it off so it didn’t fry the unit. It’s in the sub panel circuit 1,3 on a 2 p


Genny G.

Genny G. Job Checkin

Today’s visit was for multiple electrical issues. During assessment I saw that the home needed a serious electrical upgrade. The home has not been touched electrically since it was built 50 years ago. Please see attached for multiple solutions to correct all of these electrical issues for you. Work performed today below. Install surge protection in main panel Replace devices in main bedroom Replace keyless fixtures in basement


Michael W.

Michael W. Job Checkin

This solution includes the installation of an Ethernet line from one end of the basement to the other. We have completed the installation.


Alex W.

Alex W. Job Checkin

The FANTASTIC customers originally called us out because the attic fan was no longer working when I went upstairs to diagnose the issue I bypassed the thermostat and the attic fan was still not on this means that the motor itself is an issue so we removed the existing motor and the thermostat and we installed a brand new attic fan motor and thermostat I set it to 60° and turned the switch back on and the fan kicked on as designed after that I set the thermostat to 110° as Recommended unfortunately the customers were not home as they were way out of country so there was no reason in writing multiple quotes or multiple options throughout the home these customers are extremely loyal customers and when they need anything done in the near future they know they can call us and we will take care of any issue they have. Also we gave teddy plenty of pets before we left because that dog is awesome


Genny G.

Genny G. Job Checkin

Today’s visit was for fixture in kitchen and basement not working. Customer explained that he tried to replace it himself and it did not work. During assessment, I saw that the wiring needed to be corrected in the lighting outlet because the switch for the ceiling fan in the basement was a dead end switch. The switch for the kitchen light was also wired incorrectly. We corrected the wiring in both places. We installed the light, however, the light itself was damaged during install before we arrived. The motherboard in fixture was fried. Kitchen light is on and functioning. See below for work performed today. Replace light/fan in basement Correct wiring in each location Reconnect kitchen light fixture


Genny G.

Genny G. Job Checkin

Today’s visit was for inspection corrections. During assessment I saw a few things of note. Panel is original to the home from 1988, devices throughout the home are very old and painted over. They should definitely be replaced soon. Please see below for work performed today. Also, please see attached for solution to get the rest of the electrical safety concerns taken care of for you in the future. Replace (3) standard breakers with arc fault breakers Install surge protection in panel


Alex W.

Alex W. Job Checkin

Customer originally called us because the kitchen light was working intermittently when I came out to check out the problem I noticed that the light switch was a bit older and should be replaced but the main issue was the fact that there was fluorescent tubing for the light fixture and the light ballast was going bad so I explain to the customer that we can do is change that light fixture over to a 120 V LED light fixture ballast bypass This process includes us removing the existing tubes then cutting out the ballasts making them in operable then re-wiring the light fixture making it 120 V I went to the supply house and got ballast bypass LED tubes then install them turned on the new light switch and everything worked perfect customer was not worried about other options including the fact that she has aluminum wire it is not at the top of her priority so I did not push any other estimates on her out of respect for her Wishes


Genny G.

Genny G. Job Checkin

Customer had melted and burnt up receptacles on two floors. Going through the home, I saw that receptacles were backstabbed, discolored, and painted over. I strongly encourage a whole home device replacement. Customer declined at this time. Please note as discussed, this is not warrantied as we did not replace all devices on circuit. Work performed today: Replace (2) receptacles that were burnt Also, please see attached for solution to re-device whole home


Alex W.

Alex W. Job Checkin

This solution includes us installing a gfci to protect the lamp post light due to water conditions and the national electrical code requirements. We will install a 90 degree pvc pipe down the existing broken lamp post and fish the wires through that way when we put the dirt back it protects to the wires from the sharp edges. Customer is responsible for digging a 18 in deep trench over 15 to 20 inches away from the existing hole. Then dig a whole 18 inches deep to install the lamp post. We will install a customer supplied lamp post with light controlled by a photo cell. We will then concrete in the lamp post and put the dirt back


Genny G.

Genny G. Job Checkin

Today’s visit was for troubleshooting a receptacle not working and replacing a light fixture in the kitchen. During the assessment, we saw that the wire that was going from the inside of the house to the exterior of the shed, which is detached, hadno continuity and therefore has a break in the wire. We gave a solution to run a new wire from the inside of the shed to the receptacle and cap off the broken wire. Customer declined at this time. Please see below for work performed today. Replace (1) light fixture in kitchen


Genny G.

Genny G. Job Checkin

Replace (3) combo smoke detectors Replace (1) WR GFCI and in use cover Install four way system for basement lights Install whole home surge in each panel


Nicholas T.

Nicholas T. Job Checkin

The front post light was not coming on as it should. I began testing by covering the photocell with putty and it still did not kick on. I tested inside the light and found that it had proper voltage coming into it. We then realized that the photocell itself was not working. I changed out the photocell and tested by putting putty over it, and the light kicked on and off properly.


dennis@haasandsons.com

dennis@haasandsons.com Job Checkin

Installation of new 15 amp GFCI located in the garage that supply’s power to the exterior outlet located on rear of home. Replacement of outlet and in-use cover located on the rear of the home due to current condition allowing water to sneak into the electrical box causing the GFCI in garage to trip.