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

Local Reviews

Rated 4.9 out of 5 stars based on 890 customer reviews

Knowledgeable electricians with old school work ethics!

Nick did a fantastic job replacing our old recessed lights with new LED lights. He explained all of my options and made sure I was happy with my choices. He was prompt, professional and very friendly. I felt very comfortable with him and had total confidence in his ability. Ian joined him today to finish the job. He was also excellent. Both men worked very patiently and took pride in a job well done. They both commented that they wanted to make sure I was totally satisfied and happy with the final product. I was thrilled. I will be a Haas and Sons customer for life.

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Professional service

Michael is a real professional! Excellent communication, friendly, knowledgeable, and addressed all of my electrical needs.

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Professional, friendly service!!!

I highly recommend Haas and Sons for any electrical work. They were recommended to me by a friend, and I’m glad I gave them a call. I had a big job done: they replaced all the plugs and switches, electrical panel, mast on the roof, and replaced a few lights in the basement and in addition installed a dining room light for free. I have a really cluttered house and they had to move a lot of junk and heavy furniture to find and replace the plugs, but they were very good natured about it. The crew worked very hard and got the job done quicker than I expected. They were all very professional and pleasant, and I feel confident in their work. I will not hesitate to hire them again in the future.

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Excellent service!

As usual, excellent knowledge and problem-solving skills!

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Professional service

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Excellent Service!

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Excellent Service

Nick was informative and professional

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Great service

Yes, I was very satisfied with the service on yesterday. Nick did a phenomenal job with servicing the electrical problem and sharing knowledgeable information for future references. I definitely would use the service again.

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Excellent Service!

Extremely professional, knowledgeable, and fixed the problem in no time at all!

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Excellent service very professional

Mike arrived on time and was very professional, explained how work would be done and was very informative about types of install.

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Great Service -

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Excellent service.

Dennis succeeded in promptly troubleshooting and identifying the cause of our electrical issue. He then repaired the faulty outlet, while explaining why it occurred.

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Excellent Service!

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Great

Very capable highly intellent about subjects

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Job Locations

Michael W.

Michael W. Job Checkin

We have delivered pricing regarding the various electrical tasks.

We have delivered pricing regarding the various electrical tasks. We have delivered pricing regarding the various electrical tasks.

Michael W.

Michael W. Job Checkin

This solution includes the installation of a customer supplied alarm. We have installed the new customer supplied alarm on the first floor.

This solution includes the installation of a customer supplied alarm.
We have installed the new customer supplied alarm on the first floor. This solution includes the installation of a customer supplied alarm.
We have installed the new customer supplied alarm on the first floor.

Nicholas T.

Nicholas T. Job Checkin

Provided estimates for upgrades in the hallway bathroom, master bathroom, and two hallway bedrooms with customer supplied devices as well as Surge protection in main panel based on our observations of no current surge protection.

Provided estimates for upgrades in the hallway bathroom, master bathroom, and two hallway bedrooms with customer supplied devices as well as Surge protection in main panel based on our observations of no current surge protection. Provided estimates for upgrades in the hallway bathroom, master bathroom, and two hallway bedrooms with customer supplied devices as well as Surge protection in main panel based on our observations of no current surge protection.

Michael W.

Michael W. Job Checkin

We have delivered pricing regarding the installation of the receptacles.

We have delivered pricing regarding the installation of the receptacles. We have delivered pricing regarding the installation of the receptacles.

Michael W.

Michael W. Job Checkin

This solution includes the installation of a new foyer receptacle. We have installed the new receptacle in foyer.

This solution includes the installation of a new foyer receptacle.
We have installed the new receptacle in foyer. This solution includes the installation of a new foyer receptacle.
We have installed the new receptacle in foyer.

Nicholas T.

Nicholas T. Job Checkin

replace main panel in the back garage Install new 200 amp main breaker service with all new code updates. Installation of emergency disconnect on outside of the home. Installation of whole home surge protection in the main panel. Installation of new grounding system. We will pull an electrical permit. We will run a new 100 amp line to the basement sub panel .

replace main panel in the back garage
Install new 200 amp main breaker service with all new code updates.
Installation of emergency disconnect on outside of the home.
Installation of whole home surge protection in the main panel.
Installation of new grounding system.
We will pull an electrical permit.
We will run a new 100 amp line to the basement sub panel . replace main panel in the back garage
Install new 200 amp main breaker service with all new code updates.
Installation of emergency disconnect on outside of the home.
Installation of whole home surge protection in the main panel.
Installation of new grounding system.
We will pull an electrical permit.
We will run a new 100 amp line to the basement sub panel .

Michael W.

Michael W. Job Checkin

This solution includes the replacement of the existing receptacle with a new gfci receptacle. We have replaced the existing damaged receptacle in the master bedroom. We strongly recommend that the home has the receptacles and switches replaced, ensuring proper terminations.

This solution includes the replacement of the existing receptacle with a new gfci receptacle.

We have replaced the existing damaged receptacle in the master bedroom. 
We strongly recommend that the home has the receptacles and switches replaced, ensuring proper terminations. This solution includes the replacement of the existing receptacle with a new gfci receptacle.

We have replaced the existing damaged receptacle in the master bedroom. 
We strongly recommend that the home has the receptacles and switches replaced, ensuring proper terminations.

Michael W.

Michael W. Job Checkin

We have delivered pricing regarding the exterior receptacle on front of home. We have determined that dishwasher is working and has power.

We have delivered pricing regarding the exterior receptacle on front of home.
We have determined that dishwasher is working and has power. We have delivered pricing regarding the exterior receptacle on front of home.
We have determined that dishwasher is working and has power.

Michael W.

Michael W. Job Checkin

We have determined that the RV circuit is not in jeopardy.

We have determined that the RV circuit is not in jeopardy. We have determined that the RV circuit is not in jeopardy.

Michael W.

Michael W. Job Checkin

We have delivered pricing regarding the baseboard heater replacement.

We have delivered pricing regarding the baseboard heater replacement. We have delivered pricing regarding the baseboard heater replacement.

Michael W.

Michael W. Job Checkin

We have delivered pricing regarding the installation of the EV charger and dedicated circuit.

We have delivered pricing regarding the installation of the EV charger and dedicated circuit.

Michael W.

Michael W. Job Checkin

This solution includes the replacement switch for the rear exterior lights. In addition we shall repair the wiring at the post lamp and install new customer supplied exterior fixture at music building. We have replaced the exterior fixture at music building, repaired wiring at post lamp and replaced the switch that operates the rear exterior fixtures.

This solution includes the replacement switch for the rear exterior lights. In addition we shall repair the wiring at the post lamp and install new customer supplied exterior fixture at music building.

We have replaced the exterior fixture at music building, repaired wiring at post lamp and replaced the switch that operates the rear exterior fixtures. This solution includes the replacement switch for the rear exterior lights. In addition we shall repair the wiring at the post lamp and install new customer supplied exterior fixture at music building.

We have replaced the exterior fixture at music building, repaired wiring at post lamp and replaced the switch that operates the rear exterior fixtures.

Michael W.

Michael W. Job Checkin

This solution includes the replacement of the damaged exterior gfci. We have replaced the existing damaged gfci receptacle on rear exterior of home. Additionally we have installed surge protection at main panel.

This solution includes the replacement of the damaged exterior gfci. 

We have replaced the existing damaged gfci receptacle on rear exterior of home. Additionally we have installed surge protection at main panel. This solution includes the replacement of the damaged exterior gfci. 

We have replaced the existing damaged gfci receptacle on rear exterior of home. Additionally we have installed surge protection at main panel.

Michael W.

Michael W. Job Checkin

This solution includes the installation of a new customer supplied heat detector in the garage. Installation includes arc-fault protection for the circuit. We have installed the customer supplied heat detector in the garage, complete with arc fault protection.

 This solution includes the installation of a new customer supplied heat detector in the garage. Installation includes arc-fault protection for the circuit.

We have installed the customer supplied heat detector in the garage, complete with arc fault protection.  This solution includes the installation of a new customer supplied heat detector in the garage. Installation includes arc-fault protection for the circuit.

We have installed the customer supplied heat detector in the garage, complete with arc fault protection.

Nicholas T.

Nicholas T. Job Checkin

Replaced ceiling fan in kitchen