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TRUSTED BY ANNANDALE, VA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon67
    Verified generator installs reviews

Find Generator install pros in Annandale

Avatar for Cody Malone Services LLC
Cody Malone Services LLC
5.0(
358
)
Fixed Generator - RepairFixed Generator - InstallPortable Generator - Install+1 more

Serving Annandale, VA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"I have been hiring Cody Malone since we purchased our house in July 2012. They have switched out outlets, installed indoor ceiling fans, installed outdoor ceiling fans, ran electrical to my outdoor water feature and switched out my light fixtures. I plan to hire them again when I add electric to my detached garage. They always do a great job and arrive when they say they will. I have never had a single issue and they have been to my house for no less than six different projects!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Response time4 hrs
Response rate100%
4 neighbors recently requested a quote
Green's Electric
5.0(
20
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Annandale, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Emergency services offered

"This company resolved my electrical issue quickly and professionally. The technician was knowledgeable and clearly explained what was wrong and how they fixed it. I was expecting a longer wait, so I was grateful they could get to me so soon. Pricing was fair and the whole experience was excellent. I def highly recommend this company to anyone needing electrical work done. Thank you!!!"
Response time1 day
Response rate100%
34 neighbors recently requested a quote
Avatar for Raufi Services LLC
Raufi Services LLC
5.0(
29
)
Fixed Generator - Install

Serving Annandale, VA and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"You cannot find a better contractor than Raufi Services. We hired Raufi Services to install 240V/50A wiring for a hot tub. They were extremely efficient, polite, and timely. The quality of their work was outstanding--I couldn't even tell they ran the wiring in the house after they were done. They were also very competitive in their cost estimate."
Response time1 day
Response rate100%
6 neighbors recently requested a quote
Avatar for Snell Heating & Air Conditioning, LLC
Snell Heating & Air Conditioning, LLC
4.6(
169
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Annandale, VA and surrounding areas

Approved

In business since 1972

Free estimates

Emergency services offered

"Had a surprise when workmen showed up unannounced the day after I signed the contract. Once we rescheduled the installation date and time, things went very smoothly. The installation of the furnace, AC, and hot water heater took less than a day. I'm very happy with the results."
13 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Benfield Electric Co.
Benfield Electric Co.
4.9(
5
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Annandale, 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

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

Serving Annandale, 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
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Generator Install questions, answered by experts

While standby generators provide essential backup power, they can fail when you need them most due to lack of maintenance, fuel supply issues, dead batteries, electrical problems, or improper installation. To avoid costly failures, professional installation and regular maintenance are crucial. Licensed technicians ensure safety, uphold warranty requirements, comply with regulations, and provide expert servicing.

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

If you’re deciding between a solar battery versus a generator for the best backup power solution, you can take a few factors into consideration. Solar batteries are quiet while generators can be quite loud. Generators have a lower up-front cost, but they require fuel and ongoing maintenance while solar batteries are more expensive but don’t have many ongoing costs.

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.

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 Annandale, VA homeowners’ guide to generator installs

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