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    Average homeowner rating
  • Verified reviews icon875
    Verified electrical services reviews

Find Electricians in Frederick

Avatar for Horizon Services

Horizon Services

4.31(
1,060
)
Approved Pro

Horizon Services

4.31(
1,060
)
Approved Pro
Customers say: Super punctual
36 years of experience
Emergency services offered

Horizon Services is the region’s largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey, and Northeastern Maryland. After a quarter of a century in business, Horizon Services remains fully committed to setting the industry standard for customer service, installation, and focusing on things that are important to busy homeowners: respect for their time, their home and their property; up-front pricing, and an unconditional 100% money back guarantee. Horizon Services is the Heating Company Your Friends and Neighbors Call to Keep Warm All Winter Long!

"I wouldn’t be writing this Review if one thing would have happened, TALK TO ME. Don’t place the answering service in the position of telling a Customer that the Supervisor has left for the day at 2.45p on a Thursday. Especially when the Horizon repairman had just fried our whole cooling system, including the thermostat!! What started with a bad fan motor in a new AC system that was only 3.5 years old in a $10,000 system, for which we had waited 4 days for the new motor to be installed. Add to that the fact that the repairman told me he would be at our home at 8.30a and didn’t arrive until 11.30a - after having to use a vacation day to wait at home for them to arrive. Then telling me this will be ‘quick’ all I have to do is switch out the motor by mounting it and plugging in the new one. Hours went by, nothing. He comes in to test the thermostat and it is non-responsive. He tells me to get new batteries, which I did. Then asks me, “these are new?” To which I say, ‘of course’ - you watched me take them out of the box. Then he goes out to his truck for the next 1.5hrs, supposedly speaks with his Supervisor and comes in and tells me that he has fried the system. I reply by saying I will be calling a senior person to speak with them. Called 4 times and never spoke with anyone. Each time I waited on hold for an extended period of time. Each time, I was then told by the answering service that someone would call and never did. Then at 2.45p I am told “everyone has left for the day” and no one would be calling. This was a Thursday, I had been home all day and no one would speak with me. We remain without an AC system, no plan, no calls - - nothing!!! If I could rate them a ZERO, I would,"

Scott M on June 2025

Horizon Services is the region’s largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey, and Northeastern Maryland. After a quarter of a century in business, Horizon Services remains fully committed to setting the industry standard for customer service, installation, and focusing on things that are important to busy homeowners: respect for their time, their home and their property; up-front pricing, and an unconditional 100% money back guarantee. Horizon Services is the Heating Company Your Friends and Neighbors Call to Keep Warm All Winter Long!

"I wouldn’t be writing this Review if one thing would have happened, TALK TO ME. Don’t place the answering service in the position of telling a Customer that the Supervisor has left for the day at 2.45p on a Thursday. Especially when the Horizon repairman had just fried our whole cooling system, including the thermostat!! What started with a bad fan motor in a new AC system that was only 3.5 years old in a $10,000 system, for which we had waited 4 days for the new motor to be installed. Add to that the fact that the repairman told me he would be at our home at 8.30a and didn’t arrive until 11.30a - after having to use a vacation day to wait at home for them to arrive. Then telling me this will be ‘quick’ all I have to do is switch out the motor by mounting it and plugging in the new one. Hours went by, nothing. He comes in to test the thermostat and it is non-responsive. He tells me to get new batteries, which I did. Then asks me, “these are new?” To which I say, ‘of course’ - you watched me take them out of the box. Then he goes out to his truck for the next 1.5hrs, supposedly speaks with his Supervisor and comes in and tells me that he has fried the system. I reply by saying I will be calling a senior person to speak with them. Called 4 times and never spoke with anyone. Each time I waited on hold for an extended period of time. Each time, I was then told by the answering service that someone would call and never did. Then at 2.45p I am told “everyone has left for the day” and no one would be calling. This was a Thursday, I had been home all day and no one would speak with me. We remain without an AC system, no plan, no calls - - nothing!!! If I could rate them a ZERO, I would,"

Scott M on June 2025


Avatar for L & R SECURITY SYSTEMS

L & R SECURITY SYSTEMS

4.82(
33
)
Approved Pro

L & R SECURITY SYSTEMS

4.82(
33
)
Approved Pro
Customers say: Terrific value
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
40 years of experience

L & R Security has been a leader in the security industry for over 25 years. A family owned and operated company located in Media, PA, we specialize in residential and commercial security. An L & R security system is both easy to use, affordable, and will protect you against burglary, fire, carbon monoxide, water damage, and medical emergencies.

"Professional, generous, fast. Happy with my choice and my alarm system."

Ellie B on August 2022

L & R Security has been a leader in the security industry for over 25 years. A family owned and operated company located in Media, PA, we specialize in residential and commercial security. An L & R security system is both easy to use, affordable, and will protect you against burglary, fire, carbon monoxide, water damage, and medical emergencies.

"Professional, generous, fast. Happy with my choice and my alarm system."

Ellie B on August 2022


Holderman Homes, LLC

5.00(
1
)
Approved Pro

Holderman Homes, LLC

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor Home Improvement services that are customizable to each individual project. We specialize in Bathroom and Kitchen Remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

"He did a great job and he is a great man. Easy to work with"

Doug W on September 2022

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor Home Improvement services that are customizable to each individual project. We specialize in Bathroom and Kitchen Remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

"He did a great job and he is a great man. Easy to work with"

Doug W on September 2022


Brandon Tepper

4.92(
6
)
Approved Pro

Brandon Tepper

4.92(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
9 years of experience

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Had Brandon come and install 4 fans. He was on time, communicated very well, pricing was great and he didn’t mind my toddler trying to talk his ear off or my small dog barking at him. Would definitely recommend to others and we plan on using him for our light fixtures when the time comes."

Ashley P on April 2023

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Had Brandon come and install 4 fans. He was on time, communicated very well, pricing was great and he didn’t mind my toddler trying to talk his ear off or my small dog barking at him. Would definitely recommend to others and we plan on using him for our light fixtures when the time comes."

Ashley P on April 2023


Avatar for Trinity Generators & Electrical, Inc.

Trinity Generators & Electrical, Inc.

4.64(
18
)
Approved Pro

Trinity Generators & Electrical, Inc.

4.64(
18
)
Approved Pro
Customers say: True professional
16 years of experience
Free onsite estimate

Trinity Generators & Electrical, Inc., with over 30 years of experience, we are well known reputable company who provides excellent quality work, as well as providing every customer the full attention that they deserve. Call today and get a professional to do the job for you!

"Last Monday, Nov. 3, I had some major surgery done on my GENERAC generator. It was time for "Super Maintenance" and your service man did a SUPER job! His name is Joe and he did a great job servicing my machine. He arrived on time and went right to work. He changed the oil and oil filter, put in a new battery, adjusted the valves, put in a new air filter, and even cleaned the top of the generator. All this while i looked over his shoulder and asked questions, lots of questions. I am impressed with Mr. Joe. He is very knowledgeable about your products, well spoken, and easy to talk to. It took him less than an hour to complete his work, despite my constant jabbering. He's a KEEPER! Thank You Trinity, And Thank You Joe! Paul O Weller Trinity Client"

Misc E on November 2025

Trinity Generators & Electrical, Inc., with over 30 years of experience, we are well known reputable company who provides excellent quality work, as well as providing every customer the full attention that they deserve. Call today and get a professional to do the job for you!

"Last Monday, Nov. 3, I had some major surgery done on my GENERAC generator. It was time for "Super Maintenance" and your service man did a SUPER job! His name is Joe and he did a great job servicing my machine. He arrived on time and went right to work. He changed the oil and oil filter, put in a new battery, adjusted the valves, put in a new air filter, and even cleaned the top of the generator. All this while i looked over his shoulder and asked questions, lots of questions. I am impressed with Mr. Joe. He is very knowledgeable about your products, well spoken, and easy to talk to. It took him less than an hour to complete his work, despite my constant jabbering. He's a KEEPER! Thank You Trinity, And Thank You Joe! Paul O Weller Trinity Client"

Misc E on November 2025


Avatar for Christopher J. Kollar Electrical Contractor

Christopher J. Kollar Electrical Contractor

4.95(
19
)
Approved Pro

Christopher J. Kollar Electrical Contractor

4.95(
19
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
26 years of experience

Welcome to Christopher J. Kollar Electrical Contractor, LLC. We have been proudly serving the local area since 1999. Call today to schedule an appointment for fast, quality, and reliable service! You will not regret your decision to work with our company! We also provide same day or emergency services for residential and commercial clients.

"Chris was very helpful considerate. He went above and beyond. I'll definitely recommend chris on any electrical problems."

Alfred J on May 2020

Welcome to Christopher J. Kollar Electrical Contractor, LLC. We have been proudly serving the local area since 1999. Call today to schedule an appointment for fast, quality, and reliable service! You will not regret your decision to work with our company! We also provide same day or emergency services for residential and commercial clients.

"Chris was very helpful considerate. He went above and beyond. I'll definitely recommend chris on any electrical problems."

Alfred J on May 2020


Avatar for Marshall Services

Marshall Services

4.40(
101
)
Approved Pro

Marshall Services

4.40(
101
)
Approved Pro
Customers say: Quick response
168 local quotes requested
79 years of experience

We believe that all of our clients are family. Our mission is to provide all of our family members total indoor comfort, at an affordable price. Some of the many ways we do that are: installation and servicing of natural and propane gas appliances, oil heating appliances, heat pumps, air-conditioning, plumbing, fuel oil delivery, and we have an Indoor Air Quality Expert on staff. If you want a local family owned, well trained staff of drug tested, criminal background checked technicians to come to your home and solve your problem, call us!

"Marshall Services was great!"

Howard S on March 2025

We believe that all of our clients are family. Our mission is to provide all of our family members total indoor comfort, at an affordable price. Some of the many ways we do that are: installation and servicing of natural and propane gas appliances, oil heating appliances, heat pumps, air-conditioning, plumbing, fuel oil delivery, and we have an Indoor Air Quality Expert on staff. If you want a local family owned, well trained staff of drug tested, criminal background checked technicians to come to your home and solve your problem, call us!

"Marshall Services was great!"

Howard S on March 2025


"The major part of the work was replacing an old outdated Bulldog Pushmatic electric panel with the latest main breaker system. They also replaced the Matter Base, labeled all the circuits, replaced and installed GFCI, installed 5 new fixes and 2 ceiling fans, added outlets inside and in the garage, and fixed bad wiring in a few places from previous owners."

Cynthia H on January 2020

At Mister Sparky Electric, customer satisfaction is our first priority. We have over 50 years experience in providing the best quality products and service. Call today to find out what makes us the best! Remember, "We're On Time You'll See or The Repair Is FREE!"

"The major part of the work was replacing an old outdated Bulldog Pushmatic electric panel with the latest main breaker system. They also replaced the Matter Base, labeled all the circuits, replaced and installed GFCI, installed 5 new fixes and 2 ceiling fans, added outlets inside and in the garage, and fixed bad wiring in a few places from previous owners."

Cynthia H on January 2020


Avatar for Resistance Construction L.L.C.

Resistance Construction L.L.C.

4.57(
7
)
Approved Pro

Resistance Construction L.L.C.

4.57(
7
)
Approved Pro
3 years of experience
Free onsite estimate

I've been an electrician for nearly 10 years and I'm an owner-operated company based out of Quakertown. There is no job too small for me. A handful of jobs I take care of are outlets, switches, lights, ceiling, bath, and attic fans, electric car chargers, underground electric for outbuildings, electrical panels, service upgrades, troubleshooting and more.

"Tyler from Resistance did great job. He replaced & updated the service and panel along with running an underground line to my shed"

Francis D on July 2025

I've been an electrician for nearly 10 years and I'm an owner-operated company based out of Quakertown. There is no job too small for me. A handful of jobs I take care of are outlets, switches, lights, ceiling, bath, and attic fans, electric car chargers, underground electric for outbuildings, electrical panels, service upgrades, troubleshooting and more.

"Tyler from Resistance did great job. He replaced & updated the service and panel along with running an underground line to my shed"

Francis D on July 2025


Avatar for W B Lightning Rods

W B Lightning Rods

4.93(
297
)
Approved Pro

W B Lightning Rods

4.93(
297
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
205 local quotes requested

WB Lightning Rods is a third-generation lightning protection contractor. Family Owned and operated for over 60 years. installing U.L. Listed Lightning protection systems, All Over the East coast, Midwest south east and south west regions of the U.S. Installations on Residential Homes, Estate Properties, Agricultural and Equestrian Properties. Lightning Protection for trees is also available. No job to big or small References upon Request. Contact us today for a no cost or obligation estimate. We look forward to working with you on your Lightning Protection Project. Thank you. **WE ARE NOT ELECTRICIANS** **WE ONLY INSTALL LIGHTNING PROTECTION SYSTEMS **

"Great company, they were fast, friendly, & accommodating. I would definitely use them again."

Jennifer B on October 2024

WB Lightning Rods is a third-generation lightning protection contractor. Family Owned and operated for over 60 years. installing U.L. Listed Lightning protection systems, All Over the East coast, Midwest south east and south west regions of the U.S. Installations on Residential Homes, Estate Properties, Agricultural and Equestrian Properties. Lightning Protection for trees is also available. No job to big or small References upon Request. Contact us today for a no cost or obligation estimate. We look forward to working with you on your Lightning Protection Project. Thank you. **WE ARE NOT ELECTRICIANS** **WE ONLY INSTALL LIGHTNING PROTECTION SYSTEMS **

"Great company, they were fast, friendly, & accommodating. I would definitely use them again."

Jennifer B on October 2024

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Electrical questions, answered by experts

The life expectancy of a home electrical panel is typically around 25 to 40 years. However, this can vary based on usage, maintenance, and technological advancements. Regular inspections by a qualified electrician can help determine the condition and potential need for replacement as your panel ages. Factors like overloading, outdated components, or wear and tear might prompt earlier replacements for safety and efficiency reasons.

Home power is measured in kilowatt-hours, commonly expressed as kWh. The average home uses between 800 and 1,000 kWh per month. Peak usage (and highest bills) occurs in the middle of summer and the depths of winter. Keeping on top of your usage during these crucial months will lower your annual average usage considerably. 

No, outdoor outlets are not required to be on a separate circuit. However, you should always defer to local electrical codes when making decisions about how to install your new outlet. An experienced local electrician will be able to inform you of all codes and requirements in place at your home.

A blinking, or twinkle, bulb makes Christmas lights blink. Usually, this type of bulb has a silver or red tip, making it easily distinguishable from other non-blinking bulbs. Most packages of Christmas lights come with additional blinking and non-blinking bulbs. Additional bulbs can be purchased at a hardware store or online retailer.

Yes. A pellet stove should have its own 110V outlet and dedicated circuit breaker. Otherwise, it could overload the system. Pellet stoves can create major fire hazards if they aren’t wired properly or have to share circuits. Get in touch with a local electrician or pellet stove expert if you need to run new wiring for a pellet stove.

The Frederick, PA homeowners’ guide to electrical services

From average costs to expert advice, get all the answers you need to get your job done.

What do you need done? We’ll find top pros.
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