7790 Central Ave
Pasadena, MD 21122
(443) 396-3797

Local Reviews

Rated 4.9 out of 5 stars based on 495 customer reviews

Great electrician service!

Nick was outstanding, diagnosed problem quickly; explained the source, the solution and cost up front; and finished the job expertly! 5 STAR work!!!

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Very Professional, Excellent Work, and FAST

Alex (the technician) was wonderful to have come do my electrical fixes. He was thorough, professional and efficient. Thank you! Would use again, highly recommend!

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Electrical Work

Nick did a great job!! Quick and efficient; couldn't ask for better.

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Great Service!

Had an issue with my smoke alarms. Called at 8:30 am, they showed up by noon and installed a whole house system by 4 pm. Excellent service and quality!!

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great service

Alex was amiable, and a very serious worker. He immediately put me at ease with full confidence, even when I added other minor work. I am planning another job for him, and I know it will be done right. Most important, the women in the family are ecstatic. Fully satisfied. Yes, cost is a bit higher than I wanted, but I want to have full trust in the work and expected that going in.

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Backyard Floodlight

Very easy to contact. Michael was amazingly efficient, neat and clean. He is extremely knowledgeable, trustworthy, pleasant and a pleasure to work with,

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Great service

I highly Recommend Haas &Sons for great service, competitive prices, speedy response time and professional technicians. They did an excellent job upgrading our electrical in the kitchen and breakfast area as well as installing a house surge protector

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Great service with technician

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Well done

I just thought that the prices was a little expensive. I wasn’t expecting to pay as much. Alex was great! I felt safe with him in my house.

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Great service, very friendly and personable

The technician Michael was knowledgeable, friendly and very personable. He kept me informed each step of the way about what needed to be done. If I have any future electrical work to be done I will definitely be contacting Haas & sons.

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Very responsive

Haas was quick to get us on their schedule & come out to investigate our problem. It turned out to be something the power company needs to fix, but we wouldn’t have known that without their rapid response. Nick came right on time, the problem was & explained what to expect. We will definitely call Haas in the future.

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Great service

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Chandelier replacement

Matt was friendly, efficient, and thorough with his replacement of our chandelier. His experience was obvious immediately. The company’s communication was also excellent.

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Great Electrician

Mike is the best!

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Once again great service from Haas and Sons

I have asked for Michael Wendler by name for several years because he is always able to fix any electrical problem I have had. Haas and Sons probably has many people like Michael. They have always treated my family fairly with every time they have come to my house.

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Job Locations

Matt M.

Matt M. Job Checkin

Install surge protection and replace light fixture above the garage.


Nicholas T.

Nicholas T. Job Checkin

Reason for todays visit was to restore power loss to exterior receptacles. Upon inspection I found that the exterior plugs as well as all the bathroom plugs were controlled by 2 separate GFCI’S. One was located in the garage and one in the powder room. The garage one was the master GFCI which controlled even the powder room GFCI. I also found that the exterior receptacles were original to home and severely rusted. We replaced all the devices on this circuit with GFCI’s so that they wouldn’t control each other. Now if water was to get into a plug it will only trip the plug at that location. We installed Weather resistant GFCI’s in all 3 exterior locations with new In-use covers. We installed new tamper resistant GFCI’s in all 4 bathrooms and rewired the newer GFCI in the garage. We also replaced the kitchen GFCI that was tripping properly as well as the wet bar GFCI in the basement. Once installed we tested all the GFCI’s and they are working properly.


Michael W.

Michael W. Job Checkin

We have repaired the power loss that had affected the upstairs hall bathroom and bedroom. We found that originally this circuit only had 120V from hot to ground. The circuit had dropped or lost its neutral wire. We found while troubleshooting that all devices in the home were terminated using the “stab in method”. After replacement of the bathroom switches and the 2 receptacles in the bedroom, ensuring proper terminations the power was restored.


Alex W.

Alex W. Job Checkin

I inspected and put together a light fixture and plugged it into a receptacle to test the light out for the customer unfortunately the driver in the light fixture was damaged and the light would not come on. So i installed a dimmer switch where the light would be going in the dinning room so when the new fixture comes in it is ready to be installed


Alex W.

Alex W. Job Checkin

I removed and replaced 3 smoke detectors with carbon monoxide smoke detector combos (1 on each floor) I removed a ceiling fan from the living room and installed a blank plate where the canopy was I removed all the receptacles on the bathroom circuit and replaced them with tamper resistant gfcis and the ones outside with tamper resistant weather resistant gfcis with in use bubble covers Then i line sided all the wires after splicing them so a gfci would not affect the power going to the other gfcis I installed a whole home surge protector I installed 4 led wafer recess lights in the living room and installed a dimmer switch I also installed a fan rated ceiling fan box in the center of the living room and ran a 14-3 wire to it and installed a customer supplied ceiling fan and a fan wall control switch I also bonded the home at the water heater 1 year warranty


Michael W.

Michael W. Job Checkin

We have installed 4 new customer supplied light fixtures. 3 in kitchen and 1 in dining area. In addition we have installed a new customer supplied ceiling fan in the master bedroom. Lastly we have installed 4 new dimmers for The main level. Dimmers control dining, kitchen recess, kitchen pendant and living room lighting.


Michael W.

Michael W. Job Checkin

This estimate includes the installation of 10 exterior lights to spot light on the front of home. In addition we shall install 2 transformers to avoid trenching under the sidewalk. We have taken deposit and shall return December 2nd to complete the installation. We have installed the new customer supplied lighting. In addition we have mounted the transformers.


Michael W.

Michael W. Job Checkin

We have restored power to the sun room and dining areas. In addition we have replaced 3 interior receptacles and one exterior gfci. Lastly we have replaced 2switches in the dining room.


Michael W.

Michael W. Job Checkin

We have replaced the gfci controlling the exterior receptacles. In addition we have replaced the switches at the living room switch bank.


Nicholas T.

Nicholas T. Job Checkin

Replace bad arc fault breaker Reason for todays visit was to restore power to the basement bar area circuit feeding the mini fridge and the dishwasher. After troubleshooting the the breaker we found that the self test feature inside of the breaker had failed causing the breaker to randomly trip. We replaced the breaker with a new BR series duel function breaker and power was restored.


Michael W.

Michael W. Job Checkin

We have installed a new customer supplied oven. In addition we have corrected splicing concerns and installed the correct 20A two pole breaker.


Michael W.

Michael W. Job Checkin

We have replaced 5 switches in the basement living room and 1 switch in the basement bedroom.


Nicholas T.

Nicholas T. Job Checkin

Reason for todays visit was to replace front sconce lights. While onsite customer showed me a bathroom exhaust fan not working as well as a basement bathroom vanity light not working properly. After trouble shooting fixtures not working I found that most of the devices in the home are original to the 1960s build. They are beginning to fail. I replaced the 2 bad switches and quoted to replace all the devices in the home. We also replaced the 3 front light fixtures with new similar customer supplied fixtures.


Michael W.

Michael W. Job Checkin

We have installed a new dedicated 240V 60A circuit for EV charging. Panel labeled as EV Charger.


Alex W.

Alex W. Job Checkin

I removed and replaced a customer supplied doorbell 30 day labor warranty