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  • 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 - InstallFixed Generator - RepairPortable 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!"
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Response time4 hrs
Response rate100%
5 neighbors recently requested a quote
Green's Electric
5.0(
21
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Annandale, VA and surrounding areas

Approved

In business since 2007

Free estimates

Credit card accepted

Electrical Service & Repairs - We guarantee your satisfaction, and we won?t leave until the job is done right. Our team has quality experience in this industry, and we make sure our customers are happy before we leave. Call or click to schedule an estimate today!

1 neighbors recently requested a quote
Recommended by60%of homeowners
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%
4 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."
1 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

8 neighbors recently requested a quote
Recommended by60%of homeowners
Avatar for Home Service Pros
Home Service Pros
5.0(
12
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Repair - For Business

Serving Annandale, VA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"They are sewer and drain specialists and they do it really well. Reasonable prices, responsive service. We had family visiting and they moved schedules to and to us. We're grateful that they did so."
Bad Cast Iron Line
trench
after photo
waterproofing of penetration into home
Before and after

+7

Response time10 hrs
Response rate89%
1 neighbors recently requested a quote
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Generator Install questions, answered by experts

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

In many cases, yes. There are models called dual-fuel generators and fuel switches, but only between certain types of fuel. For example, with the right setup you can convert a generator from natural gas to propane. Some allow switching between diesel and gasoline. There are even tri-fuel generators available in some cases, which adds a large layer of security if you are worried about fuel availability in times of crisis. Always check your generator capabilities and manual instructions before trying to switch fuels. Some generators can use another fuel but may need a fuel conversion kit to prep them first.

In some situations, yes. Never try to put biofuel into any home generator without checking the specifics first. If a generator has the ability to run on diesel, it can also run pure biofuel (the clear kind made from seed oils, for example). But if you are using biofuel made from animal fats or vegetable oils, the generator will need significant modifications before it can handle a sludgier type of biofuel.

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.

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.