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Verified Reviews for Generator Install pros in Sisters, OR

*The Angi rating for Generator Install companies in Sisters, OR 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 Sisters, OR 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 August 07, 2026

Find Generator install pros in Sisters

Avatar for All Systems Electric, LLC
All Systems Electric, LLC
4.2(
7
)
Fixed Generator - InstallFixed Generator - Repair

Serving Sisters, OR and surrounding areas

Approved

In business since 2004

Warranties offered

Small jobs welcome

"The work was really good. Communication with them was not great. Cost double what I was estimated. Nice people though."
Response time2 days
1 neighbors recently requested a quote
Recommended by14%of homeowners
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All Systems Electric, LLC
4.3(
2
)
Fixed Generator - Install

Serving Sisters, OR and surrounding areas

Approved

In business since 2004

Credit card accepted

Offers commercial services

All Systems Electric LLC is the premier professional contracting company offering a wide variety of residential, service, and commercial electrical services to our clients in Central Oregon. We are known to pay exquisite attention to detail while making your satisfaction our number one priority.\n\nwww.ASEBEND.com\n\nPlease call us today to schedule your appointment.

Recommended by50%of homeowners
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Avatar for Tomahawk Electric
Tomahawk Electric
4.8(
25
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Sisters, OR and surrounding areas

In business since 2016

Free estimates

Credit card accepted

"Complicated old house wiring upgrade. Updated as requested, repaired multiple attic open splices. Work was time efficient and tidy."
400 amp service
Multi family
Response time2 days
Response rate85%
Recommended by95%of homeowners
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Avatar for Cascade Solar and Electric, LLC
Cascade Solar and Electric, LLC
5.0(
6
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Sisters, OR and surrounding areas

In business since 2022

Credit card accepted

Offers commercial services

"On time, great communication and explained process."
Response time1 day
Response rate94%
Recommended by100%of homeowners
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Avatar for Roth Home
Roth Home
4.6(
22
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Sisters, OR and surrounding areas

In business since 1988

Emergency services offered

Warranties offered

"The HVAC service technician was knowledgeable and knew right away what the issues were. He offered some great solutions for maintenance and cost savings until I can replace my system."
Additional Photos
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+10

Recommended by81%of homeowners
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Avatar for Timber Electric and Lighting Inc
Timber Electric and Lighting Inc
4.3(
4
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Sisters, OR and surrounding areas

In business since 2025

Free estimates

Warranties offered

"Showed up on time, installed new fan and fan switch! Was very professional and nice! Will hire again!!!"
Brasada Ranch
Response time2 days
Response rate100%
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Community Electric LLC
New to Angi
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Sisters, OR and surrounding areas

In business since 2019

Free estimates

Offers commercial services

Community Electric is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business. We hope too seeing you soon!

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Generator Install questions, answered by experts

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.

Yes. You can connect your home back-up battery to a generator with its designated charger. Be sure that the output of the generator matches the input requirements for the battery for best results.

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.

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.

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

The Sisters, OR 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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