Get matched with top generator install pros in Cabin John, MD

Q: How many days can a standby generator run continuously?

• <div><p>The <a href="https://www.angi.com/articles/how-long-can-whole-house-generator-run-continuously.htm">amount of time a standby generator can run continuously</a> is around <b>3,000 hours</b> on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home&rsquo;s natural gas supply are the best option for extended usage, as these won&rsquo;t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won&rsquo;t last as long, as these require fuel storage and regular refueling to stay running.</p></div>

Q: What size generator do I need for my house?

• <div><p><a href="https://www.angi.com/articles/what-size-generator-do-i-need.htm">Generator size requirements</a> vary wildly among properties, but typical generator sizes are listed below based on home square footage:</p><ul><li><p>1,000 sq ft: 6&ndash;9 kW</p></li><li><p>1,500 sq ft: 7&ndash;10 kW</p></li><li><p>2,000 sq ft: 10&ndash;14kW</p></li><li><p>2,500 sq ft: 12&ndash;16kW</p></li><li><p>3,000 sq ft: 16&ndash;20kW+</p></li></ul><p>Unfortunately, home square footage isn&rsquo;t always a good indicator of generator size requirements. Instead, you should call in a professional to discuss which items in your home you&rsquo;d like to run via your generator. They can calculate peak and average consumption for those items and then size your generator appropriately for optimal performance.</p></div>

Q: How much horsepower do I need?

• <div><p>If your home already has a grinder pump and you&rsquo;re still noticing issues (like frequently clogged toilets and sinks), it could be time to upgrade your grinder pump. Start by checking your existing horsepower. If there are four or fewer people living in your home, using a 1/2-horsepower grinder pump should be sufficient. Larger households should consider investing in a 1-horsepower grinder pump to maximize wastewater removal efforts.</p></div>

Q: How does a generator transfer switch save me money?

• <div><p>It might seem counterintuitive, but installing a generator transfer switch will save you money in the long run. While you&rsquo;ll have to pay between <b>$400 and $2,500</b> to have the transfer switch installed, you&rsquo;ll recoup that amount later on when you don&rsquo;t have to pay for expensive repairs to your appliances, devices, and electrical system that may have burned out, overloaded, or stopped working due to a sudden loss of power or an incorrect <a href="https://www.angi.com/articles/how-to-hook-up-generator-to-house.htm">hook up of a generator to your home</a>. </p></div>

Q: What are the pros and cons of using a natural gas generator?

• <div><p>Potential benefits of using a natural gas generator include reducing your carbon footprint, lower likelihood of carbon monoxide exposure, budget-friendly operating costs, and low-maintenance, continuous fuel supply. Some possible drawbacks, though, include higher initial <a href="https://www.angi.com/articles/how-much-does-it-cost-install-generator.htm">installation costs</a>, dependency on a natural gas supply, and installation complexity. Keep in mind that pros and cons will vary based on the type and brand of natural gas generator. </p></div>

There are 8 highly-rated local generator install pros.

Verified Reviews for Generator Install pros in Cabin John, MD

*The Angi rating for Generator Install companies in Cabin John, 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 Cabin John, 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 06, 2025

Reviewed in February 2025
Aduu Solar Energy was Easy and efficient company. Aduu Solar Energy was simple, informative and straightforward. Each person I dealt with knew status and what the next step was. Everyone was courteous and listened to and answered my many questions. Installers were great people and neat too....
ADUU SOLAR ENGINEERING LLC
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Reviewed in March 2023
Arizona Backup Power Company has earned a lot of our respect when we purchased from them the standby power generator system for our new house in Scottsdale. They handled the permit and the whole installation process. We are grateful for their services and will advise everyone to hire them.
Arizona Backup Power
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Reviewed in March 2020
A few days before the installation of my home generator my brother passed. I was told it will be a two-day install. When they called to confirm the appointment and I told them I could not do a two day install because I had to leave for the funeral. Blessed their hearts, they worked overtime and...
Russell's American Mechanical
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Reviewed in March 2019
Richard and his team have been great to work with. They make my yard look terrific, and Richard always gives helpful advice and is available to answer questions. Last fall they completed a variety of projects (including installing a flagstone walkway, planting a dogwood, general maintenance,...
New Dawn Gardens
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Reviewed in October 2018
This was my third time working with Al, and each install/remodel has been a great experience. This smaller job included hours of hanging mirrors, art, installing an overhead fixture, and installing large shelves. Al is timely, professional, and generous. 10/10 recommend Al and his team for a...
Advance Construction Concepts
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Reviewed in November 2016
Awesome job! Meticulous workmanship, knowledgeable staff & a solid installation, producing a truly professional result. They repaired the unit, installed the "hide" system on the exterior of the house & even painted the containment structure to match my brick exterior so it's not noticeable to...
Perry Aire Services Inc
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Reviewed in September 2014
I was satisfied with what they did. It was expensive. They were very responsive and they come when we need them. They are not cheap but whatever we get from them is good quality. We did have to have the generator serviced because it wasn't working properly. It was a problem with the...
New Age Lighting
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Reviewed in October 2011
We accepted Gene's bid to do major renovations to two full bathrooms in our 1917 home. Due to our home's age, Gene conducted an initial site assessment to gather additional information based on what we requested. While I was able to layout and design each bathroom prior to contacting Gene, I...
Stowe Contracting -Transformative Innovations
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Reviewed in March 2011
Overall, it went quite well. Gene, from Design Expo, was helpful from the start in terms of choosing a product that I would be interested in to replace our downstairs carpeting (which was ruined by flooding). I came in with ideas, he made related suggestions, and he provided multiple samples to...
The Design Expo - Flooring Center of Bowie
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Reviewed in July 2006
Gene Williams, Construction Manager, and crew installed awning. Downspout was dislodged during re-routing. The awning leaks where joined to the house, rain drips off awning back onto deck as if awning not there. The water is also causing erosion around concrete walk and steps under deck. This...
American Aluminum Products Inc
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