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*The Angi rating for Generator Install companies in Parker, AZ 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 Parker, AZ 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 July 14, 2026

Find Generator install pros in Parker

Avatar for River Sun Solutions
River Sun Solutions
5.0(
12
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install

Serving Parker, AZ and surrounding areas

Free estimates

Emergency services offered

Credit card accepted

"If your looking for a company that offers fair pricing, clear communication, and high quality work, I highly recommend River Sun Solutions. Best pricing after comparing several companies and the quality of install greatly exceeded my strict expectations. They showed up on time and the whole team was very professional and communicative through out the whole process."
Solar
EG4
Merten1
Merten2
Request Quote
Avatar for Sunquest Solar, Inc.
Sunquest Solar, Inc.
1.3(
6
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Parker, AZ and surrounding areas

In business since 2007

Free estimates

Warranties offered

"Great People but the cost of Solar is too High and it takes too long to start seeing a return on your investment."
Aha Macav Power Services
Recommended by100%of homeowners
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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.

It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around $300 on average, while installing a new whole-house generator costs around $5,000 on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.

Costs depend on generator type, labor, and additional wiring or transfer switch requirements.

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 have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

The Parker, AZ homeowners’ guide to generator installs

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

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