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*The Angi rating for Generator Install companies in Umatilla, 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 Umatilla, 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 October 26, 2025

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Avatar for Northwest Power Services INC

Northwest Power Services INC

2675 NW Mountain View Road
5.00(
2
)

Northwest Power Services INC

2675 NW Mountain View Road
5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Northwest Power Services Inc. We are one of the few Generac's GO-TO dealers for Industrial, Commercial and Residential generator installations. Generac refers us for help with all customer needs regarding issues related to generator Sales, Installations and Maintenance. Due to the high demand of our Electrical Service we are not currently accepting new electrical work at this time unless it is Generator Related... We are accepting ALL Generator work... We are an active dealer for the following Brand Name Generators: GENERAC, Balder, Magnum, Briggs & Stratton, Cummins/Onan, Kohler, Champion, Honda, MQ-Power, Northern Lights, MTU, Detroit Diesel, Volvo-Penta, SDMO, Marelli, Mecc Alte, Taylor, Winco and others...

Northwest Power Services Inc. We are one of the few Generac's GO-TO dealers for Industrial, Commercial and Residential generator installations. Generac refers us for help with all customer needs regarding issues related to generator Sales, Installations and Maintenance. Due to the high demand of our Electrical Service we are not currently accepting new electrical work at this time unless it is Generator Related... We are accepting ALL Generator work... We are an active dealer for the following Brand Name Generators: GENERAC, Balder, Magnum, Briggs & Stratton, Cummins/Onan, Kohler, Champion, Honda, MQ-Power, Northern Lights, MTU, Detroit Diesel, Volvo-Penta, SDMO, Marelli, Mecc Alte, Taylor, Winco and others...

My Classic Car Trader LLC

312 Prospect Ave
2.00(
1
)

My Classic Car Trader LLC

312 Prospect Ave
2.00(
1
)
53 years of experience

Sales, Service & Rebuilding of Antique and Classic Car Components such as, Carburetors, Starters, Generators, Fuel Pumps, Double & Single Action Fuel Pump Rebuilding, Water Pumps, Hydraulic Top Pumps, Distributors, and DELCO Knee Action Shocks, We also carry a complete line of NOS and NORS parts. We offer FREE Technical advice for any YEAR Classic Car 609-462-7412

"Beware. They charged me double shipping even after I told them I would wait so I wouldn’t have to pay two shipping fees. The last item was a fuel pump that I had a problem with. I have made 4 calls to ask for help with no return call. Poor"

Frank H on July 2020

Sales, Service & Rebuilding of Antique and Classic Car Components such as, Carburetors, Starters, Generators, Fuel Pumps, Double & Single Action Fuel Pump Rebuilding, Water Pumps, Hydraulic Top Pumps, Distributors, and DELCO Knee Action Shocks, We also carry a complete line of NOS and NORS parts. We offer FREE Technical advice for any YEAR Classic Car 609-462-7412

"Beware. They charged me double shipping even after I told them I would wait so I wouldn’t have to pay two shipping fees. The last item was a fuel pump that I had a problem with. I have made 4 calls to ask for help with no return call. Poor"

Frank H on July 2020

B N B Electric & Heating

P.o. Box 3088
4.50(
2
)

B N B Electric & Heating

P.o. Box 3088
4.50(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We are a general (El-01)Electrical Contractor with 30 years in the electrical field and 15 of those years as personal business owners. We have done and will do all electrical work. No job is too big or small. We are family owned and operated. We will treat you like one of the family.

We are a general (El-01)Electrical Contractor with 30 years in the electrical field and 15 of those years as personal business owners. We have done and will do all electrical work. No job is too big or small. We are family owned and operated. We will treat you like one of the family.

Generator Install questions, answered by experts

You can determine what size generator you need for a transfer switch by matching the switch to the largest outlet on your generator. Larger generators can power up to 10 circuits, while most 5,000-watt generators can provide power to six circuits. So, if your generator’s largest outlet is 30 amps, you’ll need a 30-amp transfer switch.

You can determine what size generator you need by listing the various appliances it will power during an outage. Write down the start-up watt usage, and then add them all together. 

A 7,500-watt generator will run your refrigerator, freezer, well pump, and lighting circuits without a problem. However, you’ll need an extra 3,000 to 4,500 watts to run your water heater and another 5,000 to 25,000 watts to run your electric furnace. In these instances, a whole-home generator is your best bet for running your critical equipment.

Generator size requirements vary wildly among properties, but typical generator sizes are listed below based on home square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14kW

  • 2,500 sq ft: 12–16kW

  • 3,000 sq ft: 16–20kW+

Unfortunately, home square footage isn’t always a good indicator of generator size requirements. Instead, you should call in a professional to discuss which items in your home you’d like to run via your generator. They can calculate peak and average consumption for those items and then size your generator appropriately for optimal performance.

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.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

The Umatilla, 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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