*The Angi rating for Generator Install companies in Overlea, 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 Overlea, 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 December 31, 2025
Serving Overlea, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2000
Free estimates
Warranties offered
"Their team was professional and installed the fan pretty fast. The owner was great with communicating what to expect time and cost wise. I will definitely use this company again."
Serving Overlea, MD and surrounding areas
Approved
In business since 1998
Free estimates
Warranties offered
"Everything about Able Electrical Services service was superb! I was in a jam, and Able Electrical Services came to the rescue. Both of the mechanics that assisted were excellent. Russell Ridgway was the primary mechanic and he was amazing! His work is superior and he exceeded my expectations every step of the way. For example, I needed electrical outlets to connect install a wet bar. He measured the wet bar and installed the outlets exactly where they were needed and ensured sufficient power was added to accommodate a kegerator and mini-frigs. I highly recommend Able Electrical Services and hope I never need to use any other electrician."
Serving Overlea, MD and surrounding areas
Approved
In business since 2007
Free estimates
Warranties offered
"They were there when they said they would be and I would hire them again."
Serving Overlea, MD and surrounding areas
Approved
In business since 1969
Emergency services offered
Warranties offered
"Clinton Electric is a very professional organization: responsive, efficient, quality materials, excellent workmanship and a reasonable price. Jordan Mayer, the electrician, who performed the installation was outstanding. I highly recommend this company."
+2
Serving Overlea, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Credit card accepted
"Wolf Electric came out and did a great job installing our new bathroom fixture. The job was done quickly and professionally. Would definitely recommend!"
Serving Overlea, MD and surrounding areas
Approved
In business since 2002
Free estimates
Emergency services offered
"We have been using Dave since we moved to Maryland nine years ago . He is knowledgeable, efficient, reasonable and friendly. That he is a master electrician says a great deal about his years of experience and knowledge in electrical work. I highly recommend him."
Serving Overlea, MD and surrounding areas
Approved
In business since 1925
Free estimates
Emergency services offered
"Very responsive, extremely knowledgeable, excellent problem solvers. They kind of really solved the mystery of why the generator didn't work that had to do with the electric."
Serving Overlea, MD and surrounding areas
Approved
In business since 1986
Free estimates
Warranties offered
"Work was done with excellent results at a reasonable price. There were several complications with old, ancient wiring and construction that were handled very well."
Serving Overlea, MD and surrounding areas
Approved
In business since 2012
Free estimates
Credit card accepted
"I selected Mr. Jefferson after talking with two other vendors. He arrived timely, worked quickly and competently, and provide good advice about the products which he installed. His price was competitive, and her recommended someone for another service that I needed. I will probably use him for future electrical projects."
+6
Serving Overlea, MD and surrounding areas
Approved
In business since 1986
Free estimates
Credit card accepted
"GENERAC Maintenance and Repair. I just used Electrical USA for my home back up generator service and repair. They did a fantastic job very affordable, prompt and thorough. Definitely recommend them!"
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.
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 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
From average costs to expert advice, get all the answers you need to get your job done.
The cost to install a whole-house generator in Baltimore, MD varies based on factors like generator size, fuel type, and installation complexity. Learn the typical price range and what influences your total cost.
The cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
Natural gas generators are whole-home standby generators that are connected to your home’s natural gas line. The average cost for a natural gas generator is $12,000.
Wondering who to hire to install a generator? Consult this guide to learn who to hire to install a generator or a transfer switch.
Whole home generator installations require a professional hand. Read this guide to help you decide which generator is best for your home.
Traditional and inverter generators can provide off-grid or emergency power. Learn the pros and cons of a traditional generator vs. inverter generator.
