What can I run on different generator sizes?

• <div><p>Here’s what you can run with different wattages and types of generators:</p><p>Portable generator:</p><ul><li><p>2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. </p></li><li><p>4,000 watts will keep two large appliances operating and a few smaller devices.</p></li><li><p>8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.</p></li></ul><p>Partial to whole-house generator:</p><ul><li><p>20,000 watts and above will make it seem like your home’s power is still on.</p></li></ul><p></p></div>

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Q: Where can you install a whole-house generator?

• <div><p>Whole-house generators need to be installed on level ground several feet away from walls and other objects. Because they tap into the electrical system directly, they usually need to be close to your home electrical panel for a transfer switch installation. It also helps with installation if they are near to a gas line or propane tank installation.</p></div>

Q: What happens with the generator when the local power goes back on?

• <div><p>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&rsquo;ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.</p></div>

Q: What can I run on different generator sizes?

• <div><p>Here&rsquo;s what you can run with different wattages and types of generators:</p><p>Portable generator:</p><ul><li><p>2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. </p></li><li><p>4,000 watts will keep two large appliances operating and a few smaller devices.</p></li><li><p>8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.</p></li></ul><p>Partial to whole-house generator:</p><ul><li><p>20,000 watts and above will make it seem like your home&rsquo;s power is still on.</p></li></ul><p></p></div>

Q: What size generator do I need for a 2,500-square-foot house?

• <div><p>A home that is 2,500 square feet will likely need a 20kW to 25kW generator. Consult your local generator installer to confirm the generator size needed to power your home before purchasing a new one. Be sure to consider how much power your necessary devices need to run.</p></div>

Q: What’s the normal lifespan of a diesel generator?

• <div><p>You can expect a diesel generator to last for up to <b>30,000 hours of use</b>, 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. </p></div>

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Verified Reviews for Generator Install pros in Window Rock, AZ

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

Reviewed in June 2025
Mike was here when he said he would be. Found the problem but didn’t have the part. He got the right part over a weekend and installed it had me up and running. Great customer service and is very knowledgeable. I would use him again if needed, highly recommended him!!!!!!!
ETA APPLIANCE
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Reviewed in April 2024
From my first phone call, to final install, they kept an open line of communication. The employees were very courteous and friendly. I am very pleased with my experience with ESC!
Energy Conservation Specialist, LLC
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Reviewed in January 2023
We were very pleased with everything from the install to the final walk through. We liked that Sunny Energy had their own materials and equipment; they didn't have to contact someone else to install the product. Everyone we worked with was professional, courteous and responded quickly. A...
Sunny Energy, LLC
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Reviewed in April 2022
Our tile installer was awesome. Very detailed oriented.
Empire Today - Phoenix
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Reviewed in December 2018
Everything went well. From the customer service representatives on the phone to the installer - all were courteous and professional. The work was performed in a timely manner. I have used this company before and they continue to be easy to work with, thoughtful and helpful. We are very satisfied...
SafePro Auto Glass
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Reviewed in June 2017
Well, A/C is 10 years old, they did an inspection and evaluation. The capacitor was in need of replacement and was probably costing us in higher electric bills. Also they installed a programmable thermostat for us. We were very pleased.
ProSkill Plumbing, Heating & Air
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Reviewed in April 2016
After visiting the Classy Closets showroom in Chandler, I was given a card to contact one of the designers, Cristin Young. I emailed her in the late afternoon, 4ish, with a brief statement and description of the drawers and shelves I wanted in that deep niche. Dimensions of the space were...
Classy Closets
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Reviewed in December 2012
My husband and I live on a hill, and the steep driveway has been eroding for years. Efforts to fix it ourselves had been in vain, as portions of the driveway contain caliche, and the center of the driveway had eroded to the point where water was flowing down the center of the road during rain...
CROSS BROTHERS CONTRACTING INC
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Find Generator install pros in Window Rock

BRYDEN'S AUTO SVC INC

2730 E McDowell Road

5.00(

)

BRYDEN'S AUTO SVC INC

2730 E McDowell Road

5.00(

)

Customers say: Quick response

Recommended by 100% of Angi customers

Bryden's Auto Service has been in business since 1995.We have an A+ rating with the Better Business Bureau.We are a Full service repair facility.We have ASE certified Master Technicians.We offer service for foreign and domestic vehicles including diesel vehicles.We are located at 2730 E. McDowell Rd. Suite #1 in Phoenix,Az. Quality workmanship and customer service is our number one priority.We care about getting your car in great shape as quickly as possible so you can get back on the road and on with your life.

"My son needed assistance in getting his Cadillac through emissions. I went to a lot of places. They all wanted at least 3 times the value of the vehicle. I went on the DMV website and searched for mechanics with a 100 percent pass rate. I found Bryden's and found good reviews. Went in. Met a mechanic that was friendly. Explained everything and laid out the options and made it downright affordable. They did the repair and physically took it though emissions. Specifically track down an intake leak on a 2001 Cadillac Seville STS. Not an easy task. Job done. Very pleased with the service. I highly recommend them to not just do emissions but do other repairs."

Keith S on October 2018

"My son needed assistance in getting his Cadillac through emissions. I went to a lot of places. They all wanted at least 3 times the value of the vehicle. I went on the DMV website and searched for mechanics with a 100 percent pass rate. I found Bryden's and found good reviews. Went in. Met a mechanic that was friendly. Explained everything and laid out the options and made it downright affordable. They did the repair and physically took it though emissions. Specifically track down an intake leak on a 2001 Cadillac Seville STS. Not an easy task. Job done. Very pleased with the service. I highly recommend them to not just do emissions but do other repairs."

Keith S on October 2018

My Classic Car Trader LLC

312 Prospect Ave

2.00(

)

My Classic Car Trader LLC

312 Prospect Ave

2.00(

)

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

"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

Generator Install questions, answered by experts

Whole-house generators need to be installed on level ground several feet away from walls and other objects. Because they tap into the electrical system directly, they usually need to be close to your home electrical panel for a transfer switch installation. It also helps with installation if they are near to a gas line or propane tank installation.

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.

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 home that is 2,500 square feet will likely need a 20kW to 25kW generator. Consult your local generator installer to confirm the generator size needed to power your home before purchasing a new one. Be sure to consider how much power your necessary devices need to run.

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.

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