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TRUSTED BY WHEATON, MD HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon39
    Verified generator installs reviews

Find Generator install pros in Wheaton

Long Electric, LLC
4.9(
167
)

Serving Wheaton, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Customers say: Quality work

"My experience is getting a new whole house generator installed by Long Electric was wonderful. They were responsive, timely and very professional. Everyone I dealt with was very courteous and answered all my questions over and over. I highly recommend their services."
Response time2 days
9 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Nasr Electric Inc
Nasr Electric Inc
4.9(
276
)

Serving Wheaton, MD and surrounding areas

Approved

In business since 2003

Free estimates

Warranties offered

"Joseph came to our home on 8 /28/21, to replace an outdoor GFI outlet. He was punctual, professional, and quite easy to work with. While he was there, I asked him to take a look at our very old electrical panel, and would he consider replacing it at a later date. He said, he needed to check his schedule and get back to me. He did. Joseph obtained the permit. We agreed on a date to install the new panel. I am very satisfied with the work performed by Joseph and his assistants. I'm sure it will pass inspection without issue. He's very good at what he does! Yes, I would hire again. Yes, I definitely would recommend."
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+19

Response time5 days
Response rate100%
1 neighbors recently requested a quote
Avatar for Vital Electric
Vital Electric
5.0(
41
)

Serving Wheaton, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Emergency services offered

"Excellent job . Ludwing arrived on time and worked for 6 hours to complete the installation. He went beyond to solve some part issues . I would highly recommend him ."
Natural history museum
Island light
Island light
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+8

Response time6 hrs
Response rate95%
1 neighbors recently requested a quote
Avatar for GAC Services
GAC Services
4.8(
291
)

Serving Wheaton, MD and surrounding areas

Approved (Corporate)

In business since 1970

Free estimates

Warranties offered

"I’m back again to write another stellar review for GAC. Last year they replaced our HVAC system; this year we circled back and had them install a home generator. This was a long and drawn out process due to the various approvals needed from Montgomery County as well as coordination with Washington Gas (which ended up not just being a simple sign off but necessitating an additional, expensive upgrade to the gas line from the street to our home). Nevertheless, GAC did a fantastic job shepherding this process over the 6+ months of waiting on stakeholders, and they were also maximally accommodating to our family’s significant constraints on time and availability (due to health concerns related to a medically fragile family member). A special kudos to Sandy M, GAC’s master electrician, who took it on personally to ensure we were taken care of all throughout this process, going above and beyond with phone calls, text messages, personal visits, etc. on behalf of my family, I want to thank GAC and am giving top marks across the board for this effort which was complex , lengthy, and ultimately successful."
Additional Photos
66 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for William G Hyman Electrical Contractor
William G Hyman Electrical Contractor
4.8(
439
)

Serving Wheaton, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1980

Free estimates

Warranties offered

"Bill and his crew are a great team of professionals. They completed a clean install of a Tesla power station for my car and a couple of power outlets for the garage. Communications were perfect and Bill is a no pressure person so this was an easy transaction. The team is very detailed oriented and clean up after they finished. Thank you Bill and Team!"
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+6

Response time10 hrs
5 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for D&G Remodeling
D&G Remodeling
5.0(
38
)

Serving Wheaton, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Warranties offered

"Deybi was super professional and he took the time to explain the electrical system in my old house and recommended the best option. He and his partner also took the time after the work was done to clean up after the work was done and made sure that I was satisfied with the final work. Would definitely hire again!"
Electrical Project
kitchen remodel
VIENNA KITCHEN REMODEL
FORT WASHIMGTON KITCHEN
ALEXANDRIA  BATHROOM RENOVATION

+50

Response time10 hrs
Response rate93%
4 neighbors recently requested a quote
Avatar for OC1 Electric
OC1 Electric
4.6(
51
)

Serving Wheaton, MD and surrounding areas

Approved

In business since 2009

Customers say: Quick response

"Oupekkha showed up exactly on time, explained clearly what he was doing, what his annual service contract included and reassured me that our generator is good to go. He even topped off the oil for us. I signed up!"
Response time1 day
Recommended by97%of homeowners
JOHN MAX ELECTRIC
5.0(
22
)

Serving Wheaton, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Emergency services offered

"The electrical team was professional, knowledgeable, prompt, personable and did an overall wonderful job. They are clearly expert electricians. They cleaned up after they finished the project. I would recommend them highly to my family and friends. As an added plus, they priced their work reasonably."
Electrical Project
Electrical Project
Electrical Project
Response time1 day
4 neighbors recently requested a quote
Recommended by95%of homeowners
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Generator Install questions, answered by experts

Homeowners can often access federal tax credits, such as the Investment Tax Credit (ITC), which covers a percentage of installation costs. Many states and utilities offer additional rebates, grants, or performance-based incentives. These programs can significantly lower your upfront investment. Check the Database of State Incentives for Renewables and Efficiency (DSIRE) or contact your local energy office for current offers.

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

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.

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.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

The Wheaton, MD homeowners’ guide to generator installs

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