Get matched with top generator installers in Ellicott City, MD
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26 Verified Reviews for Generator Installation pros in Ellicott City, MD
*The Angi rating for Generator Installation companies in Ellicott City, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Installation needs.
*The HomeAdvisor rating for Generator Installation companies in Ellicott City, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Installation needs.
Last update on May 13, 2025
Generator installers in Ellicott City
We specialize in home repairs and projects, providing you with solutions from basic to long-lasting so that we can ensure that we not only fit the budget but provide safety and comfort for your family. Haas & Sons is a small, family-operated business based in Millersville, Maryland, serving Anne Arundel, Howard, and surrounding counties. Our certified Electricians undergo constant training to provide you with quality work, excellent warranties, and fantastic service. What to expect with Haas & Sons- A company you can trust, Marked Vehicles, Uniformed and trained Techs, Constant communication, and Upfront pricing, all with a friendly smile.
"Very experienced person. The work was done to our satisfaction and was over and above our expectations."
Prasad N on December 2024
We specialize in home repairs and projects, providing you with solutions from basic to long-lasting so that we can ensure that we not only fit the budget but provide safety and comfort for your family. Haas & Sons is a small, family-operated business based in Millersville, Maryland, serving Anne Arundel, Howard, and surrounding counties. Our certified Electricians undergo constant training to provide you with quality work, excellent warranties, and fantastic service. What to expect with Haas & Sons- A company you can trust, Marked Vehicles, Uniformed and trained Techs, Constant communication, and Upfront pricing, all with a friendly smile.
"Very experienced person. The work was done to our satisfaction and was over and above our expectations."
Prasad N on December 2024
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.
"Tri State was prompt—they had a tech out within hours when our 20-year-old HVAC broke down. The repair estimate was $800–$1,200, and they also sent a salesman, Mike, to discuss replacement. Mike was courteous and knowledgeable, but, when we sat down to review the quote, the sales process turned into a bad car-buying experience. They started at $34,000, then "discounted" to $29,300—$10,000 -$12,000 higher than other quotes for the exact same unit. Even factoring in their warranty, they remained $8,000–$10,000 overpriced. Mike also claimed they were a four-generation family-owned business, but I later found out they’re owned by Sila Services, a Goldman Sachs private equity firm—which feels misleading. To their credit, canceling was easy (though I hadn’t signed a financing agreement or put money down). Bottom line: Get multiple quotes. Their pricing was excessive, and the sales tactics felt manipulative."
STUART K on March 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.
"Tri State was prompt—they had a tech out within hours when our 20-year-old HVAC broke down. The repair estimate was $800–$1,200, and they also sent a salesman, Mike, to discuss replacement. Mike was courteous and knowledgeable, but, when we sat down to review the quote, the sales process turned into a bad car-buying experience. They started at $34,000, then "discounted" to $29,300—$10,000 -$12,000 higher than other quotes for the exact same unit. Even factoring in their warranty, they remained $8,000–$10,000 overpriced. Mike also claimed they were a four-generation family-owned business, but I later found out they’re owned by Sila Services, a Goldman Sachs private equity firm—which feels misleading. To their credit, canceling was easy (though I hadn’t signed a financing agreement or put money down). Bottom line: Get multiple quotes. Their pricing was excessive, and the sales tactics felt manipulative."
STUART K on March 2025
Experience the difference with All In Electric, Inc. – where professionalism and reliability converge to power your success. Established in 2011, All In Electric, Inc. has been the trusted choice for quality electrical services in Maryland and beyond. With 38 years of combined experience, our team of skilled electricians delivers unparalleled expertise, ensuring your projects, whether new construction, home remodeling, or light commercial, are handled with the utmost precision and care. From planning and design to construction and maintenance, we handle it all, tailoring our services to your unique needs. Your satisfaction is our top priority, and we take pride in our exceptional customer service, available 24/7 for your residential and commercial emergencies.
"I am so pleased with this company. Amber was just so wonderful with answering all of my questions and addressing my concerns. The two gentlemen that came to do the work were professional, friendly, fast and efficient! I had five existing light fixtures replaced with retro LED recessed lights, and three smoke detectors replaced as well. They are so nice! So glad I got the work done with them. I would use them again if I need any electrical work done in the future. Their price was so much more reasonable than other quotes that I received. I would highly recommend them."
Teresa R on April 2025
Experience the difference with All In Electric, Inc. – where professionalism and reliability converge to power your success. Established in 2011, All In Electric, Inc. has been the trusted choice for quality electrical services in Maryland and beyond. With 38 years of combined experience, our team of skilled electricians delivers unparalleled expertise, ensuring your projects, whether new construction, home remodeling, or light commercial, are handled with the utmost precision and care. From planning and design to construction and maintenance, we handle it all, tailoring our services to your unique needs. Your satisfaction is our top priority, and we take pride in our exceptional customer service, available 24/7 for your residential and commercial emergencies.
"I am so pleased with this company. Amber was just so wonderful with answering all of my questions and addressing my concerns. The two gentlemen that came to do the work were professional, friendly, fast and efficient! I had five existing light fixtures replaced with retro LED recessed lights, and three smoke detectors replaced as well. They are so nice! So glad I got the work done with them. I would use them again if I need any electrical work done in the future. Their price was so much more reasonable than other quotes that I received. I would highly recommend them."
Teresa R on April 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.
"Josh did a great job assessing our older carrier heat pump. he was honest and laid out the expenses of replacing the old heat pump fan and the other parts needed."
John F on March 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.
"Josh did a great job assessing our older carrier heat pump. he was honest and laid out the expenses of replacing the old heat pump fan and the other parts needed."
John F on March 2025
Family owned and operated Electrical contracting company, servicing residential and commercial clients. Specializing in back-up generators, full rehabs, remodels and additions. We also have bucket truck service available. We are Licensed and insured in most metropolitan cities and counties in Maryland, DC, Va. Minimum service charge applies per service call.
"Larry and his crew upgraded our under cabinet lighting with new LED lighting, and specialized outlet. Not only was our home and its contents treated as if they lived here, the job was done professionally. So much so, that the only issue we had was when the switch/outlet face plate screws came loose. I didn’t even bother calling Larry, I tightened them myself. The lighting is on, literally 24 hours per day since the install, with zero issues. Love these guys."
Chris F on December 2024
Family owned and operated Electrical contracting company, servicing residential and commercial clients. Specializing in back-up generators, full rehabs, remodels and additions. We also have bucket truck service available. We are Licensed and insured in most metropolitan cities and counties in Maryland, DC, Va. Minimum service charge applies per service call.
"Larry and his crew upgraded our under cabinet lighting with new LED lighting, and specialized outlet. Not only was our home and its contents treated as if they lived here, the job was done professionally. So much so, that the only issue we had was when the switch/outlet face plate screws came loose. I didn’t even bother calling Larry, I tightened them myself. The lighting is on, literally 24 hours per day since the install, with zero issues. Love these guys."
Chris F on December 2024
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
Calvary Electric LLC is a family owned, locally operated business specializing in commercial and residential electrical service and new construction. We serve our clients well with strong values in integrity, good character and hard work. If you desire quality workmanship and a job done right the first time, then Calvary is the contractor for you.
"Great crew. Responded quickly and professionally. Was able to circumvent some issues with my initial wants and come up with a better layout for the project. Just what was needed and complete in record time. Great pricing as well for the detailed work performed."
David L on October 2024
Calvary Electric LLC is a family owned, locally operated business specializing in commercial and residential electrical service and new construction. We serve our clients well with strong values in integrity, good character and hard work. If you desire quality workmanship and a job done right the first time, then Calvary is the contractor for you.
"Great crew. Responded quickly and professionally. Was able to circumvent some issues with my initial wants and come up with a better layout for the project. Just what was needed and complete in record time. Great pricing as well for the detailed work performed."
David L on October 2024
We pride ourselves on getting your project done right the first time! Chesapeake Electric is a locally-owned and operated company in Annapolis, MD established by Master Electrician, Ryan Deshaies. With over 50 years of combined experience, our dedicated team focuses on providing superior customer service, craftsmanship, and professionalism beyond expectations. We are a full service licensed and insured electrical contractor and here to serve you 24/7 with expertise in residential and commercial electrical work. Whether you require an emergency electrician or have an in-depth electrical project, we work directly with you through design, implementation, and follow up services. Your peace of mind is very important to us. You will always know exactly what work is being done and why. Projects that are big and small, we take them all! We want to make your project dream a reality. Call Chesapeake Electric Electric today at 410-280-3388.
"Did not receive a call"
Ian S on August 2020
We pride ourselves on getting your project done right the first time! Chesapeake Electric is a locally-owned and operated company in Annapolis, MD established by Master Electrician, Ryan Deshaies. With over 50 years of combined experience, our dedicated team focuses on providing superior customer service, craftsmanship, and professionalism beyond expectations. We are a full service licensed and insured electrical contractor and here to serve you 24/7 with expertise in residential and commercial electrical work. Whether you require an emergency electrician or have an in-depth electrical project, we work directly with you through design, implementation, and follow up services. Your peace of mind is very important to us. You will always know exactly what work is being done and why. Projects that are big and small, we take them all! We want to make your project dream a reality. Call Chesapeake Electric Electric today at 410-280-3388.
"Did not receive a call"
Ian S on August 2020
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Wireworx Electric Inc. We specialize in all aspects of the electrical trade. Residential & Commercial. We take pride in everything that we do, and are certain that you'll be 100% satisfied. All work initiated by owner/ master electrician. No salesman. Excellent references, hundreds of satisfied customers. Please call today for your FREE ESTIMATE! 10% discount for senior citizens & retired military. Licensed & Insured.
"The service tech arrived on time and completed the work efficiently and completely."
David A on November 2024
Wireworx Electric Inc. We specialize in all aspects of the electrical trade. Residential & Commercial. We take pride in everything that we do, and are certain that you'll be 100% satisfied. All work initiated by owner/ master electrician. No salesman. Excellent references, hundreds of satisfied customers. Please call today for your FREE ESTIMATE! 10% discount for senior citizens & retired military. Licensed & Insured.
"The service tech arrived on time and completed the work efficiently and completely."
David A on November 2024
At New Line Electric LLC, we have trained and professional residential electricians. We have comprehensive solutions for all of your residential electrical needs. Whether it is complete wiring of your home, lighting installations and repairs, small renovations or even landscape lighting , we’ll provide you with quality work and ensure the job is done in a timely manner. Our number one goal is complete your electrical needs quickly and professionally.
"Outstanding process from quote to completion."
Michael P on February 2024
At New Line Electric LLC, we have trained and professional residential electricians. We have comprehensive solutions for all of your residential electrical needs. Whether it is complete wiring of your home, lighting installations and repairs, small renovations or even landscape lighting , we’ll provide you with quality work and ensure the job is done in a timely manner. Our number one goal is complete your electrical needs quickly and professionally.
"Outstanding process from quote to completion."
Michael P on February 2024
Generator installations FAQs
Installing a whole-house generator costs about $5,000 on average. Prices range from $1,550 to $8,500, depending on size, brand, fuel type, and assembly. The size of your whole-house generator is the most significant cost factor, with large homes with high energy demands costing the most to power. Types of whole-home generators include:
Portable generators with 1kW–7.5kW capacity: $500–$2,000
Partial generators with 9kW–20kW capacity: $2,000–$6,300
Whole-house generators with 22kW–48kW: $5,000–$18,000
When maintained properly, a whole-house generator can last up to 20 years. Costs to maintain and repair generators vary by location and type of generator, but you can expect to pay about $150 to $300 per year for annual generator maintenance checks. An experienced generator service technician will inspect your generator’s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible.
When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:
Refrigerator: 600 watts
Large dehumidifier: 700 watts
Large window air conditioner: 1,400 watts
Water heater: 3,000 watts
Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running.
Here’s what you can run with different wattages and types of generators:
Portable generator:
2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers.
4,000 watts will keep two large appliances operating and a few smaller devices.
8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.
Partial to whole-house generator:
20,000 watts and above will make it seem like your home’s power is still on.
The value of installing a whole-house generator is that your home has guaranteed power, even if the power grid in your area is down. Whether a whole-house generator is worth installing in your home depends on how often you use it, your home’s location, and your lifestyle. For example, installing a whole-house generator is likely worth it if you:
Experience frequent or prolonged power outages
Work from home
Store a lot of cold food
Have a sump pump
Have a pump for well water
Use electronic medical devices
Live in a climate requiring heating or cooling
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