Top-rated generator install pros.

Get matched with top generator install pros in Hagerstown, MD

Enter your zip and get matched with up to 5 pros

Find Generator install pros in Hagerstown

Avatar for GAC Services

GAC Services

4.80(
279
)
•Approved Pro

GAC Services

4.80(
279
)
•Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
56 years of experience

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"Highly professional, knowledgeable and well behaved technician. Prices offered were good too. I definitely recommend the company."

Deepak U on February 2025

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"Highly professional, knowledgeable and well behaved technician. Prices offered were good too. I definitely recommend the company."

Deepak U on February 2025

JL Electric

4.94(
31
)
•Approved Pro

JL Electric

4.94(
31
)
•Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
27 years of experience

We offer over 30 years of experience in the electrical industry. We take on a wide range of electrical projects to include full installation for additions and remodels as well as wiring and panel upgrades and a variety of other jobs. We're committed to providing a personalized service for each individual project we take on & look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

"We highly recommend JL Electric, He was on time , did an excellent job and was very friendly, we will definitely contact him again when needed !"

Robin M on January 2024

We offer over 30 years of experience in the electrical industry. We take on a wide range of electrical projects to include full installation for additions and remodels as well as wiring and panel upgrades and a variety of other jobs. We're committed to providing a personalized service for each individual project we take on & look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

"We highly recommend JL Electric, He was on time , did an excellent job and was very friendly, we will definitely contact him again when needed !"

Robin M on January 2024

Avatar for W B Lightning Rods

W B Lightning Rods

4.93(
297
)
•Approved Pro

W B Lightning Rods

4.93(
297
)
•Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
25 years of experience

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

Avatar for TriState Home Services

TriState Home Services

4.73(
181
)
•Approved Pro

TriState Home Services

4.73(
181
)
•Approved Pro
Customers say: Super punctual
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
77 years of experience

If you are looking for a HVAC Contractor, a Plumbing Contractor, or an Electrical Contractor to provide you with great service, you've come to the right place. We provide heating services, air conditioning services, plumbing services, and electrical services to our customers in Frederick and the surrounding Counties, the Pan Handle of West Virginia, and Northern Virginia, from our offices located in Frederick MD. With 3 generations of experience in providing heating, air conditioning, plumbing, and electrical services, we are dedicated to providing the best possible products and services for you, and your family.

"Great service very prompt and easy to work with."

Randy W on May 2025

If you are looking for a HVAC Contractor, a Plumbing Contractor, or an Electrical Contractor to provide you with great service, you've come to the right place. We provide heating services, air conditioning services, plumbing services, and electrical services to our customers in Frederick and the surrounding Counties, the Pan Handle of West Virginia, and Northern Virginia, from our offices located in Frederick MD. With 3 generations of experience in providing heating, air conditioning, plumbing, and electrical services, we are dedicated to providing the best possible products and services for you, and your family.

"Great service very prompt and easy to work with."

Randy W on May 2025

Avatar for J A Electric LLC.

J A Electric LLC.

4.83(
36
)
•Approved Pro

J A Electric LLC.

4.83(
36
)
•Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
11 years of experience

10 Years Of Experience. Provides Exceptional & Guaranteed Residential Work. Put Clients Needs First Before Anything. www.jaelectricllc.net

"Antonio was great. I had 2 ceiling fans installed on a 15 foot high pitched ceiling. The fans I purchased were meant for a ceiling with a much smaller pitch so they were not able hang straight as is. I thought I would have to wait and buy some additional hardware to complete the job but Antonio clearly communicated with me to show me why they wouldn’t work and talked me through a few ideas he wanted to try to make it work. It took a bit more time but in the end he was able to make some cuts and holes to the fans and they worked out great in the end. He saved me some time and money so I was happy to leave him with a tip. "

Monika W on December 2025

10 Years Of Experience. Provides Exceptional & Guaranteed Residential Work. Put Clients Needs First Before Anything. www.jaelectricllc.net

"Antonio was great. I had 2 ceiling fans installed on a 15 foot high pitched ceiling. The fans I purchased were meant for a ceiling with a much smaller pitch so they were not able hang straight as is. I thought I would have to wait and buy some additional hardware to complete the job but Antonio clearly communicated with me to show me why they wouldn’t work and talked me through a few ideas he wanted to try to make it work. It took a bit more time but in the end he was able to make some cuts and holes to the fans and they worked out great in the end. He saved me some time and money so I was happy to leave him with a tip. "

Monika W on December 2025

Avatar for Rollins Repair

Rollins Repair

4.97(
48
)
•Approved Pro

Rollins Repair

4.97(
48
)
•Approved Pro
Customers say: Quality work
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
22 years of experience

Welcome to Rollins Repair! We specialize in residential generator installations, repairs and service work. We are an authorized Guardian Generator Dealer and Installer. Give us a call today.

"Our existing generator died. James diagnosed the problem and gave us a few options to repair or replace it. We chose to replace it. James handled everything, from getting and installing the new generator to electrical and fuel (propane) connections. We have asked him to schedule us for the annual maintenance on the machine. We are pleased, though we haven't lost power since it was installed, LOL. "

Gail D on January 2025

Welcome to Rollins Repair! We specialize in residential generator installations, repairs and service work. We are an authorized Guardian Generator Dealer and Installer. Give us a call today.

"Our existing generator died. James diagnosed the problem and gave us a few options to repair or replace it. We chose to replace it. James handled everything, from getting and installing the new generator to electrical and fuel (propane) connections. We have asked him to schedule us for the annual maintenance on the machine. We are pleased, though we haven't lost power since it was installed, LOL. "

Gail D on January 2025

Avatar for Dead Rock Contractor Services, LLC

Dead Rock Contractor Services, LLC

5.00(
17
)
•Approved Pro

Dead Rock Contractor Services, LLC

5.00(
17
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
21 years of experience

With over 30 years of experience, Dead Rock Services provides trusted residential and commercial Electrical, HVAC and Plumbing services across Jefferson County and the Tri-State area. Our licensed and insured team delivers expert workmanship, honest pricing, and exceptional customer care on every job. Whether you need an electrical panel upgrade, generator installation, EV charger, HVAC or plumbing repair, we’re your local one-call solution. 🏆 A Solid Reputation Built on Solid Relationships.

"Great Company"

Derek G on May 2022

With over 30 years of experience, Dead Rock Services provides trusted residential and commercial Electrical, HVAC and Plumbing services across Jefferson County and the Tri-State area. Our licensed and insured team delivers expert workmanship, honest pricing, and exceptional customer care on every job. Whether you need an electrical panel upgrade, generator installation, EV charger, HVAC or plumbing repair, we’re your local one-call solution. 🏆 A Solid Reputation Built on Solid Relationships.

"Great Company"

Derek G on May 2022

Avatar for Mario Falconio Electric, LLC

Mario Falconio Electric, LLC

5.00(
13
)
•Approved Pro

Mario Falconio Electric, LLC

5.00(
13
)
•Approved Pro
Super Service Award
6 years of experience
Free onsite estimate

Mario Falconio Electric, LLC is 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. We have 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.

"Mario installed a 240v outlet in my garage. This required a new breaker and about 100 feet of wire. Mario laid out a good plan in running the wire from the box in my basement, through the attic, on out to the garage. He is very efficient and safe with his work. Excellent price!"

William H on October 2025

Mario Falconio Electric, LLC is 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. We have 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.

"Mario installed a 240v outlet in my garage. This required a new breaker and about 100 feet of wire. Mario laid out a good plan in running the wire from the box in my basement, through the attic, on out to the garage. He is very efficient and safe with his work. Excellent price!"

William H on October 2025

Avatar for Kolb Electric Inc

Kolb Electric Inc

4.38(
200
)
•Approved Pro

Kolb Electric Inc

4.38(
200
)
•Approved Pro
Customers say: Super punctual
101 years of experience
Free onsite estimate

We are a family owned and operated business that has been serving the Baltimore, Washington Metropolitan area since 1925. We are committed to providing superior electrical services. The valuable advantages we can offer you are great service, high quality and experienced workers at a competitive price.

"Do not use this company. They will rip you off. The contract was for eight 300W LED 40 ft pole lights, but I caught them redhanded installing 240W. Who does that? Then, they broke my lock and broke into my sprinkler room which I saw on my video which they admitted. Then, Kolb sued me for not paying the bill which I disputed due to lost tools as result of the break-in. Who does that breaking into a customer's sprinkler room and not informing that they did. I had to catch them on my video. Not only that it took over one year to the work proposed work. TOTAL FRAUD. I will be going to court...."

John A on November 2023

We are a family owned and operated business that has been serving the Baltimore, Washington Metropolitan area since 1925. We are committed to providing superior electrical services. The valuable advantages we can offer you are great service, high quality and experienced workers at a competitive price.

"Do not use this company. They will rip you off. The contract was for eight 300W LED 40 ft pole lights, but I caught them redhanded installing 240W. Who does that? Then, they broke my lock and broke into my sprinkler room which I saw on my video which they admitted. Then, Kolb sued me for not paying the bill which I disputed due to lost tools as result of the break-in. Who does that breaking into a customer's sprinkler room and not informing that they did. I had to catch them on my video. Not only that it took over one year to the work proposed work. TOTAL FRAUD. I will be going to court...."

John A on November 2023

Avatar for Ewell Home Improvements LLC

Ewell Home Improvements LLC

4.75(
53
)
•Approved Pro

Ewell Home Improvements LLC

4.75(
53
)
•Approved Pro
Customers say: Quality work
21 years of experience
Emergency services offered

Ewell Builders and Power company: the reliable contractor Serving the greater DMV area, we provide professional construction and electrical services for both residential and commercial clients. Our commitment to transparency ensures that you have all the information you need, leaving no questions unanswered. With years of experience, we've refined our approach to become one of the region's premier service providers. We leverage the latest technology to stay ahead of the competition and deliver top-notch results. Choose Ewell Builders and power company for reliable energy solutions you can count on.

"People are very nice and honest.. Did the work on time and did a good job. I did not like the thermostat that was installed. We are older and could not read the actual temp because it was such small print. It was also very hard to program. They installed the new one and took the time to show me how to use it, at no extra cost. Very happy with their work."

Marvin F on December 2020

Ewell Builders and Power company: the reliable contractor Serving the greater DMV area, we provide professional construction and electrical services for both residential and commercial clients. Our commitment to transparency ensures that you have all the information you need, leaving no questions unanswered. With years of experience, we've refined our approach to become one of the region's premier service providers. We leverage the latest technology to stay ahead of the competition and deliver top-notch results. Choose Ewell Builders and power company for reliable energy solutions you can count on.

"People are very nice and honest.. Did the work on time and did a good job. I did not like the thermostat that was installed. We are older and could not read the actual temp because it was such small print. It was also very hard to program. They installed the new one and took the time to show me how to use it, at no extra cost. Very happy with their work."

Marvin F on December 2020

...
Showing 1-10 of 108

Verified Reviews for Generator Install pros in Hagerstown, MD

*The Angi rating for Generator Install companies in Hagerstown, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Hagerstown, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on January 03, 2026

Generator Install questions, answered by experts

In Hagerstown, the generator’s concrete pad may shift due to freeze-thaw cycles, so monitor for cracks or settling. Electrical panel connections and gas line fittings can loosen with seasonal changes. Pay attention to ventilation areas, keeping them clear of leaves or snow. Homes with well pumps, sump pumps, or older HVAC systems often need extra attention to ensure consistent backup power during outages.

Helpful?

In Hagerstown, consider generator installation if you experience frequent outages, depend on well water, or have medical equipment at home. Schedule installation before storm season or if your current generator is over 10 years old, struggles to start, or can’t support your home’s electrical needs. Upgrades are also wise after major renovations or if local weather patterns have become more severe.

Helpful?

In Hagerstown, generator maintenance should include running the unit under load each month, changing oil every 100-200 hours or annually, and replacing air filters and spark plugs yearly. Check battery terminals quarterly, especially after harsh winters, and inspect fuel lines for leaks or wear. After heavy storms, clear debris from vents and ensure the transfer switch operates smoothly to keep your backup power reliable.

Helpful?

In Hagerstown, create a seasonal inspection plan by checking for freeze damage and clearing debris each spring, testing the generator and cooling system before summer storms, and inspecting seals, batteries, and block heaters in fall. During winter, keep the unit free of snow and run monthly test cycles. Year-round, monitor for leaks, fuel levels, and ensure the transfer switch is functioning properly.

Helpful?

For generator installation in MD, choose a reinforced concrete base with a gravel layer for drainage, which helps prevent shifting during wet seasons. Use THWN-2 copper wiring in PVC or rigid metal conduit for safe electrical connections. Black iron pipe or CSST is ideal for natural gas lines, while DOT-approved connectors suit propane. Weather-resistant enclosures and stainless steel fasteners protect against MD’s variable climate.

Helpful?

The Hagerstown, MD homeowners’ guide to generator installs

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

See all articles

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"