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TRUSTED BY POTOMAC FALLS, VA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon15
    Verified generator installs reviews

Find Generator install pros in Potomac Falls

Avatar for SciFiHomes Inc
SciFiHomes Inc
5.0(
27
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+4 more

Serving Potomac Falls, VA and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"The guys arrived exactly at the prearranged time. They informed me that the work would take longer than the '2 man hours' that I bought through the Angie's List Deals before they began the job - which I appreciated.  They were on task and professional the whole time. They explained any problems they encountered while re-installing the old light fixture - need new bulbs.  They cleaned up any mess they made at the end of the job. Rates and cost of supplies were reasonable.  I WILL BE CALLING THEM BACK FOR ANY OTHER ELECTRICAL WORK IN THE FUTURE.
"
Cummins Onan 400A ATS
Cummins Onan 20kW
Briggs & STratton Standby Generator
Response time7 hrs
Response rate100%
6 neighbors recently requested a quote
Avatar for Benfield Electric Co.
Benfield Electric Co.
4.9(
5
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Potomac Falls, VA and surrounding areas

Approved

In business since 1968

Free estimates

Emergency services offered

Benfield Electric Company is an area leader in the Electrical Service field, serving customers throughout Northern Virginia, Maryland, and D.C. We work with residential and commercial clients and pride ourselves on our capability to meet all types of electrical wiring demands and deadlines. Established in 1968, we are a licensed, bonded and insured class “A” Electrical contractor. We are focused on providing a wide array of services to meet all our customer's needs

Air Cooled Backup Generator Install
Air Cooled Backup Generator Install
Air Cooled Backup Generator Install
Liquid Cooled Backup Generator
Transfer Switch

+9

6 neighbors recently requested a quote
Recommended by60%of homeowners
Avatar for Parrish Services, Inc.
Parrish Services, Inc.
3.9(
52
)
Portable Generator - Repair

Serving Potomac Falls, VA and surrounding areas

Approved (Corporate)

In business since 1997

Free estimates

Emergency services offered

"Received a call from Parrish Services. We spoke for almost 30 minutes on the phone plus using a video app I was able to stream to him my home heating system. Based on my situation and the current installed oil heating system I would be wasting money trying to change to a new electric system. He indicated the system installed was a top of the line efficient system. After the conversation I let him know I appreciated his honesty and input. That input included having to upgrade electrical panel etc.. Bottom line.. Found Parrish to be honest, bottom line answers yet willing to work with you on what you want done. Thanks Parrish .Services..."
AC Replacement
AC Replacement
AC Replacement
Generator Installation
Generator Installation

+3

Recommended by89%of homeowners
Avatar for M.E. Flow
M.E. Flow
5.0(
5
)
Fixed Generator - InstallFixed Generator - Repair

Serving Potomac Falls, VA and surrounding areas

Approved (Corporate)

In business since 1951

Free estimates

Emergency services offered

M.E. Flow offers FREE in-home consultations for replacement HVAC systems and we are an authorized dealer of most major brands. Established in 1951 by Millard Edward Flow we remain family owned. Replacing your HVAC system and water heater is a big investment. When you go with M.E. Flow your satisfaction is guaranteed. We do not install customer supplied equipment, do new construction, or give quotes over the phone. We send a professional home comfort advisor to your home--even meet you after hours. During your home visit we will design you the perfect system, answer all your questions, and get your system in the family budget. Financing and/or rebates are typically available. Qualified Staff: You get a team of professionals, NATE certification means your getting the best. Company employees are required to pass a background investigation which include a criminal records check and drug testing. We also offer the best guarantees.

ME Flow HVAC Services
5 neighbors recently requested a quote
Avatar for Michael & Son Services, Inc.
Michael & Son Services, Inc.
3.3(
235
)
Fixed Generator - Install

Serving Potomac Falls, VA and surrounding areas

Approved

In business since 1976

Emergency services offered

Warranties offered

"Assessment : 1) Internal: Electrical Panel Update:Workmanship -Excellent! External: Installation of Grounding Poles: Not Completed in a Timely Fashion. 2) Customer Service Department: Excellent! Kept me informed and addressed my needs in a swift caring manner. Very Professional! I knew I could rely on what ever promise which was made concerning inspection dates and times and final project completion."
Electrical Services
Electrical Services
Present Information to Customers
Arriving at Home
Fully Stocked Trucks

+11

Response time2 hrs
Response rate97%
Recommended by76%of homeowners
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Showing 1-10 of 70
Generator Install questions, answered by experts

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

If you’re wondering if you can use your electric vehicle as a backup battery, it depends on whether your EV is compatible with bidirectional charging. This technology allows energy to flow both ways, enabling vehicle-to-home (V2H) backup power, vehicle-to-load (V2L) for appliances and camping, and vehicle-to-grid (V2G) to support the power grid. Compatible EVs convert stored DC energy into usable AC power, helping reduce energy costs and enhance grid stability while providing emergency backup power.

In most cases, there are no tax credits available for home generators. However, that’s a general statement that applies to federal tax credits, so you might have access to state or local tax incentives. You can check the Database of State Incentives for Renewables & Efficiency (DSIRE) for more information about your area. If you hire a reliable home generator installer, they should also know if there are any state or local perks you can use to reduce your installation costs, including tax breaks and rebates.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

The Potomac Falls, VA homeowners’ guide to generator installs

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