Top-rated generator install pros.

Get matched with top generator install pros in Frederick, MD

There are 15 highly-rated local generator install pros.

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  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon17
    Verified generator installs reviews

Find Generator install pros in Frederick

Avatar for TriState Home Services

TriState Home Services

82A Wormans Mill Ct
4.64(
195
)
Approved Pro

TriState Home Services

82A Wormans Mill Ct
4.64(
195
)
Approved Pro
Customers say: Super punctual
227 local quotes requested
76 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 GAC Services

GAC Services

227 E Deer Park Dr
4.80(
279
)
Approved Pro

GAC Services

227 E Deer Park Dr
4.80(
279
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
654 local quotes requested

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 K 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 K on February 2025


Avatar for Appleton Campbell

Appleton Campbell

285 Alwington Blvd
4.64(
320
)
Approved Pro

Appleton Campbell

285 Alwington Blvd
4.64(
320
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
139 local quotes requested

Call today for FREE Estimates for new heating and cooling systems, water heaters, water filtration and electrical panels and whole home generators. Founded in 1976 by Jim Appleton, grandfather of current President Mike Appleton—Appleton Campbell has remained a locally owned and operated business dedicated to their customers, employees and communities. Honesty, integrity, and experience are the cornerstones on which Appleton Campbell was built and on which it continues to grow today. Committed to outstanding customer service Appleton Campbell provides: - Highly trained technicians who treat you and your home with courtesy and respect - Flat-rate pricing—the price you are quoted up front is the price you will pay—there are no surprises - Guaranteed service and customer satisfaction

"Being a MVP customer was time for Heating/Cooling safety inspections. Kevin Stanley was the HVAC Service Tech assigned to the job. He went over a few issues on our older unit he found during his inspection. I never felt pressured to have the work done and so glad he resolved them on the same day. He definitely went out of his way doing a great job. He explained everything to me that he was doing and also answering all the questions I had. The price was reasonable. Will definitely call Appleton Campbell when needing home repairs, this is our 3rd project they’ve taken care of. Thanks again"

Cindy S on May 2025

Call today for FREE Estimates for new heating and cooling systems, water heaters, water filtration and electrical panels and whole home generators. Founded in 1976 by Jim Appleton, grandfather of current President Mike Appleton—Appleton Campbell has remained a locally owned and operated business dedicated to their customers, employees and communities. Honesty, integrity, and experience are the cornerstones on which Appleton Campbell was built and on which it continues to grow today. Committed to outstanding customer service Appleton Campbell provides: - Highly trained technicians who treat you and your home with courtesy and respect - Flat-rate pricing—the price you are quoted up front is the price you will pay—there are no surprises - Guaranteed service and customer satisfaction

"Being a MVP customer was time for Heating/Cooling safety inspections. Kevin Stanley was the HVAC Service Tech assigned to the job. He went over a few issues on our older unit he found during his inspection. I never felt pressured to have the work done and so glad he resolved them on the same day. He definitely went out of his way doing a great job. He explained everything to me that he was doing and also answering all the questions I had. The price was reasonable. Will definitely call Appleton Campbell when needing home repairs, this is our 3rd project they’ve taken care of. Thanks again"

Cindy S on May 2025


"Fast and Completed what we needed & will call him back for more!😊👍"

Curtis G on March 2025

I establish the company in 2006, I been providing electrical service to residential and commercial facilities, I am looking forward to providing any electrical service to the community for years to come, we have over 14 years' experience in electrical services.

"Fast and Completed what we needed & will call him back for more!😊👍"

Curtis G on March 2025


Avatar for Tim Kyle Electric Heating & Cooling

Tim Kyle Electric Heating & Cooling

151 W Main St
4.89(
354
)
Approved Pro

Tim Kyle Electric Heating & Cooling

151 W Main St
4.89(
354
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
39 years of experience

At Tim Kyle Electric, Heating & Cooling, we believe that honesty, respect, and integrity are important. That’s why we have up-front pricing. You approve the price before we start your job. We also respect your home. All of our employees have to pass drug tests and background checks before they begin employment with us. All of our electricians are professionally trained and uniformed service technicians.

"Rob was great from the estimate visit, to estimate delivery, and in coordinating the installation appointment (had to sub-contract in a roofer). On the day of service, Rob and Austin arrived on time (as did the roofers) and made quick work of the installation. It seems a rarity to find truly knowledgeable and friendly contractors that are both prompt and excellent communicators. This experience shined on all fronts. Will definitely be using Tim Kyle again. Appreciate the work Rob/Austin!"

Kevin C on August 2025

At Tim Kyle Electric, Heating & Cooling, we believe that honesty, respect, and integrity are important. That’s why we have up-front pricing. You approve the price before we start your job. We also respect your home. All of our employees have to pass drug tests and background checks before they begin employment with us. All of our electricians are professionally trained and uniformed service technicians.

"Rob was great from the estimate visit, to estimate delivery, and in coordinating the installation appointment (had to sub-contract in a roofer). On the day of service, Rob and Austin arrived on time (as did the roofers) and made quick work of the installation. It seems a rarity to find truly knowledgeable and friendly contractors that are both prompt and excellent communicators. This experience shined on all fronts. Will definitely be using Tim Kyle again. Appreciate the work Rob/Austin!"

Kevin C on August 2025


Avatar for Kline Electrical Services

Kline Electrical Services

11842 Indian Lane
5.00(
1
)
Approved Pro

Kline Electrical Services

11842 Indian Lane
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
86 local quotes requested

The Kline family has been serving customers in Hagerstown, Frederick, Martinsburg, Chambersburg, and Winchester for over 30 years. We are excited to continue our legacy of providing quality electrical services to you and your family into the future. If you are in need of electrical repairs or installations, contact us today. The Kline team consists of some of the most professional and knowledgeable electricians in the four state region. There is nothing that we can't handle. We are a full service company offering comprehensive repair and installation services, and we are ready to take on your project. Below are just a few of the services we offer at Kline: -Surge protection -Electrical panel maintenance and repair -New electrical panel installation -Electrical service upgrades -Meter base install, maintenance, and repair -Electric vehicle (EV) charging stations -Lighting upgrades (LED) -Outlet repair and installations -Generator installs and services -Whole home or partial rewiring services -Full electrical system installs

"Simply amazing from start to finish! I can't say enough nice things about this company or the people that I dealt with. They were all professional, friendly and they did great work. They called me just minutes after I clicked their name on Angi's List and had someone out to give me an estimate and had my appointment date set in record time from most companies that I have dealt with for home improvement. I hate having people in my house working but I felt totally comfortable with them. The work they did was exceptional. We got a new power box (breaker box - whatever it's call) and a new meter and a couple of new outlets put in. We also got new smoke detectors throughout the house. They had to work around some issues and relocate a bit of pipe from out water filter system that was in their way. And they just took care of it without any complaints. I didn't have to do anything. They took care of it all and had the inspector come out and get it approved. I feel safe in my home now. I highly recommend this company and I will be calling them for any future electrical work that I need done."

Linda H on June 2025

The Kline family has been serving customers in Hagerstown, Frederick, Martinsburg, Chambersburg, and Winchester for over 30 years. We are excited to continue our legacy of providing quality electrical services to you and your family into the future. If you are in need of electrical repairs or installations, contact us today. The Kline team consists of some of the most professional and knowledgeable electricians in the four state region. There is nothing that we can't handle. We are a full service company offering comprehensive repair and installation services, and we are ready to take on your project. Below are just a few of the services we offer at Kline: -Surge protection -Electrical panel maintenance and repair -New electrical panel installation -Electrical service upgrades -Meter base install, maintenance, and repair -Electric vehicle (EV) charging stations -Lighting upgrades (LED) -Outlet repair and installations -Generator installs and services -Whole home or partial rewiring services -Full electrical system installs

"Simply amazing from start to finish! I can't say enough nice things about this company or the people that I dealt with. They were all professional, friendly and they did great work. They called me just minutes after I clicked their name on Angi's List and had someone out to give me an estimate and had my appointment date set in record time from most companies that I have dealt with for home improvement. I hate having people in my house working but I felt totally comfortable with them. The work they did was exceptional. We got a new power box (breaker box - whatever it's call) and a new meter and a couple of new outlets put in. We also got new smoke detectors throughout the house. They had to work around some issues and relocate a bit of pipe from out water filter system that was in their way. And they just took care of it without any complaints. I didn't have to do anything. They took care of it all and had the inspector come out and get it approved. I feel safe in my home now. I highly recommend this company and I will be calling them for any future electrical work that I need done."

Linda H on June 2025


Avatar for Absolute Electrical Contractors LLC

Absolute Electrical Contractors LLC

300 Hibiscus Street
4.56(
164
)
Approved Pro

Absolute Electrical Contractors LLC

300 Hibiscus Street
4.56(
164
)
Approved Pro
Customers say: Super punctual
37 local quotes requested
34 years of experience

Our electricians are always Prompt, Courteous, Respectful of your home. More than 20 years in Montgomery County. We cover the whole DC area. Accredited Better Business Bureau Member Absolutely no hidden fees licensed & insured in MD, DC, & VA. Let us help you go green & save yourself some green $s. Eco-friendly solutions, home remodeling/renovations, new home installations, upgrading of service, upgrade fuse box to breaker box, troubleshooting & repairs, home inspections. We design, install, & repair: outdoor/landscape lighting, security lighting & systems, communications systems/telephones & systems wiring, data (internet) wiring, cable and fios tv wiring, recessed & track lighting, ceiling fans, attic exhaust fans, light fixture & dimmers, plugs & switches, emergency generators, appliances. better business bureau certified member. Many people believe that their car is the largest single source of air pollution for which they are personally responsible. But in fact, the average home causes the emission of more than twice as much carbon dioxide--the principal greenhouse gas--as the average car. This is because most of the energy consumed in our homes is produced by burning fossil fuels like coal, oil, and natural gas. This pollution is actually a hidden cost for the energy We use, over and above the dizzying $110 billion Americans spend each year on their home energy bills that's nearly $1,300 per house. Much of this energy use is unnecessary because there are a variety of proven, widely available products on the market today (heating, cooling, appliances, windows, lighting, etc.) to drastically reduce your home's energy bills, and accompanying pollution. What's more, many of these products actually improve the comfort and livability of your home.

"Andre was extremely helpful and kind with the install - I was having issues with my power in my rooms, he helped me navigate the issue, replace the needed sockets, and also gave me extra help regarding recommendations for electrical safety. Could not recommend enough, thanks Andre!"

Eniola O on May 2025

Our electricians are always Prompt, Courteous, Respectful of your home. More than 20 years in Montgomery County. We cover the whole DC area. Accredited Better Business Bureau Member Absolutely no hidden fees licensed & insured in MD, DC, & VA. Let us help you go green & save yourself some green $s. Eco-friendly solutions, home remodeling/renovations, new home installations, upgrading of service, upgrade fuse box to breaker box, troubleshooting & repairs, home inspections. We design, install, & repair: outdoor/landscape lighting, security lighting & systems, communications systems/telephones & systems wiring, data (internet) wiring, cable and fios tv wiring, recessed & track lighting, ceiling fans, attic exhaust fans, light fixture & dimmers, plugs & switches, emergency generators, appliances. better business bureau certified member. Many people believe that their car is the largest single source of air pollution for which they are personally responsible. But in fact, the average home causes the emission of more than twice as much carbon dioxide--the principal greenhouse gas--as the average car. This is because most of the energy consumed in our homes is produced by burning fossil fuels like coal, oil, and natural gas. This pollution is actually a hidden cost for the energy We use, over and above the dizzying $110 billion Americans spend each year on their home energy bills that's nearly $1,300 per house. Much of this energy use is unnecessary because there are a variety of proven, widely available products on the market today (heating, cooling, appliances, windows, lighting, etc.) to drastically reduce your home's energy bills, and accompanying pollution. What's more, many of these products actually improve the comfort and livability of your home.

"Andre was extremely helpful and kind with the install - I was having issues with my power in my rooms, he helped me navigate the issue, replace the needed sockets, and also gave me extra help regarding recommendations for electrical safety. Could not recommend enough, thanks Andre!"

Eniola O on May 2025


Avatar for Clinton Electric Co Inc

Clinton Electric Co Inc

1524 York Rd
4.60(
162
)
Approved Pro

Clinton Electric Co Inc

1524 York Rd
4.60(
162
)
Approved Pro
Customers say: Super punctual
206 local quotes requested
56 years of experience

Since 1969, our family owned and operated company has proudly operated out of Timonium-Lutherville and provided the highest quality electrical services. Our electricians have built a solid reputation in the Greater Baltimore region based on a commitment to service and quality work. All of the work we do comes with an upfront quote and 100% guaranteed satisfaction. Clinton Electric delivers prompt and reliable electrical repair and installation services to our community. Available to handle the needs of residential and commercial property owners throughout Baltimore City, Baltimore, Harford, Anne Arundel and Howard counties, you can count on our professionally trained, experienced team to handle your electrical job with the highest level of excellence.

"Job was done right and efficiently. I purchased their membership for ~$13 a month (1yr commitment) b/c we has just bought a new house and it brought the cost down. Subtracting 1 star b/c with the membership I was sold, I was supposed to receive a free house check, which didn’t happen. Electrician just installed the station and was ready to go. I’ve guy though, and did good work."

Candis M on January 2025

Since 1969, our family owned and operated company has proudly operated out of Timonium-Lutherville and provided the highest quality electrical services. Our electricians have built a solid reputation in the Greater Baltimore region based on a commitment to service and quality work. All of the work we do comes with an upfront quote and 100% guaranteed satisfaction. Clinton Electric delivers prompt and reliable electrical repair and installation services to our community. Available to handle the needs of residential and commercial property owners throughout Baltimore City, Baltimore, Harford, Anne Arundel and Howard counties, you can count on our professionally trained, experienced team to handle your electrical job with the highest level of excellence.

"Job was done right and efficiently. I purchased their membership for ~$13 a month (1yr commitment) b/c we has just bought a new house and it brought the cost down. Subtracting 1 star b/c with the membership I was sold, I was supposed to receive a free house check, which didn’t happen. Electrician just installed the station and was ready to go. I’ve guy though, and did good work."

Candis M on January 2025


"GREAT!!!!!! Excellent service, very professional, on time and honest!!! I will be using their service again."

Raychon R on October 2025

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

"GREAT!!!!!! Excellent service, very professional, on time and honest!!! I will be using their service again."

Raychon R on October 2025


"Very well! Our technician was very competent and pleasant to deal with"

Rae G on March 2025

Upgrade your home with home entertainment and security system installations from our company. We pride ourselves on the quality work we provide, while delivering great customer service! Call -or- click to schedule a free estimate today!

"Very well! Our technician was very competent and pleasant to deal with"

Rae G on March 2025

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Generator Install questions, answered by experts

Whole-house generators can last 20 to 40 years with normal operation and proper maintenance. If you look up the specifications for your generator, you may be able to find a lifespan rated in hours of operation. Life expectancy will vary depending on how often and for how long you use the generator each year. Choosing a fuel with low impact like natural gas or diesel can help generators last as long as possible.

You may need a permit for a portable generator if you’ll be installing a transfer switch for your primary residence or similar work. Otherwise, a permit for other uses may not be necessary. Check your local building codes or ask a local generator installer for more information about your local regulations.

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

Energy output depends on turbine size, average wind speed at your site, and system efficiency. A 5 kW turbine in a good wind location can generate 8,000 to 12,000 kilowatt-hours per year, which may cover a large portion of an average home’s needs. Accurate output estimates require a professional wind assessment and a review of your household’s energy usage patterns.

You can determine what size generator you need by listing the various appliances it will power during an outage. Write down the start-up watt usage, and then add them all together. 

A 7,500-watt generator will run your refrigerator, freezer, well pump, and lighting circuits without a problem. However, you’ll need an extra 3,000 to 4,500 watts to run your water heater and another 5,000 to 25,000 watts to run your electric furnace. In these instances, a whole-home generator is your best bet for running your critical equipment.

The Frederick, MD homeowners’ guide to generator installs

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