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Verified Reviews for Generator Install pros in Saint Leonard, MD

*The Angi rating for Generator Install companies in Saint Leonard, 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 Saint Leonard, 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 April 21, 2026

Top-Rated Generator install pros in Saint Leonard - Updated Nov 2026

Calvert Generator
New to Angi
Generator - Install - For Business

Serving Saint Leonard, MD and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

Calvert Generator 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. 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. \n

Response time10 hrs
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Avatar for Evergreen Electric LLC
Evergreen Electric LLC
4.9(
36
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Saint Leonard, MD and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"Phenomenal job by Evergreen.  Analyzed the current box and gave me options, best, most cost effective was upgrading the 40 yr old CB panel and adding a generator interlock.  Work was done perfectly and efficiently...now when the neighborhood goes dark (all too often when the weather is bad in Northern VA), we have power and AC.  Thanks Evergreen."
Recommended by100%of homeowners
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Avatar for Paradise Construction
Paradise Construction
4.4(
173
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Saint Leonard, MD and surrounding areas

In business since 2003

Free estimates

Emergency services offered

"I ended up hiring someone else who could install a ceiling fan as Paradise Construction was afraid of needing to tear up a large section of the ceiling and I didn’t want to create additional work and expense."
Recommended by85%of homeowners
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Petro Home Services
4.6(
260
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Saint Leonard, MD and surrounding areas

In business since 1903

Emergency services offered

Warranties offered

"I was pleasantly surprised at their careful and thorough approach to the installation. They also were the most competitive bid with Cropp Metcalf being $3000 higher with less equipment. They are a local gem in a crowded field which should not be overlooked by savvy consumers"
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Recommended by90%of homeowners
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Avatar for Mason Electrical Services
Mason Electrical Services
4.3(
12
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Saint Leonard, MD and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"It went very well, he is a licensed electrician and he changed all of my old s12 sockets to energy efficient sockets so that I could use my electronic devices and not blow circuits.  I was being charged each time I called in a help ticket.  So I called Mason Electrical Services and had him come out and take a look . He came out and took a look at the problem and gave me an estimate .and I was really satisfied on the price.  He arrived promptly on 8 March 2014 had everything he needed to work with, and completed the work it only took a couple of hours and the job was done.  In that time he installed a ceiling fan in my bedroom with a remote.  He didn't make a mess.  I would definitely recommend him to others needing electrical services in the future.

"
Recommended by83%of homeowners
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Power House Electric
5.0(
2
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Saint Leonard, MD and surrounding areas

In business since 2006

Emergency services offered

Credit card accepted

"He was fabulous and did a great job. It was a 20kw generator. He was very professional and came in uniform. He was thorough in discussing my options. He was able to install this in my basement instead of hanging it outside. The main reason why I'd recommend him so highly is that the unit I have is a big generator. I have it setup to run on propane. It turned out that the gas company did not lay the line within the county codes. Jim caught that and notified that. They argued with him, but the county came out and determined that it was potentially dangerous. The gas company had to redo the installation for free. He could of just finished the installation, and I would not have known the distance."
Recommended by100%of homeowners
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Generator Install FAQs, answered by experts

Yes, in most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home models. Because these installations involve significant alterations to your home's electrical system and produce exhaust fumes, local governments often require a permit or inspection for safety purposes. A generator permit typically costs between $50 and $250, depending on your location. Your electrician or certified installer can usually handle the permitting process for you, but you will be responsible for the cost. It's a good practice to confirm with your installer that they will pull all necessary permits before work begins.

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.

With proper maintenance, a whole-house generator can last between 20 and 40 years. The specific lifespan depends on how often and for how long the generator is used, and some models may have their life expectancy rated in hours of operation. To maximize its lifespan, expect to spend around $150 to $300 per year for annual maintenance checks from a qualified technician. During these checks, a technician will inspect the engine filter, starting mechanism, fuel, lubrication, and coolant levels. Consulting your installer and choosing a low-impact fuel like natural gas or diesel can also help ensure your generator lasts as long as possible.

In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between $50 and $250, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you—and might be required to do so by your building department—but you’ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.

Yes. You can connect your home back-up battery to a generator with its designated charger. Be sure that the output of the generator matches the input requirements for the battery for best results.

The Saint Leonard, MD homeowners’ guide to generator installs

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

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