Get matched with top generator install pros in Pima, AZ

Q: How do I determine what size generator my house needs?

• <div><p>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.</p><p>Here are some typical wattage requirements for common appliances:</p><ul><li><p>Refrigerator: 600 watts</p></li><li><p>Large dehumidifier: 700 watts</p></li><li><p>Large window air conditioner: 1,400 watts</p></li><li><p>Water heater: 3,000 to 4,500 watts</p></li><li><p>Electric furnace: 5,000 to 25,000 watts</p></li></ul><p>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.</p><p>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:</p><ul><li><p>1,000 sq ft: 6&ndash;9 kW</p></li><li><p>1,500 sq ft: 7&ndash;10 kW</p></li><li><p>2,000 sq ft: 10&ndash;14 kW</p></li><li><p>2,500 sq ft: 12&ndash;16 kW</p></li><li><p>3,000 sq ft: 16&ndash;20 kW+</p></li></ul><p>For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.</p></div>

Q: What is a remote start generator?

• <div><p>These advanced generators use a key fob or a smartphone app to remotely start, which is ideal for getting power back on immediately without venturing outside. This feature is more common on whole home generators, but you may be able to find it on large portable generators, too.</p></div>

Q: Do natural gas generators produce carbon monoxide?

• <div><p>If you&rsquo;re wondering <a href="https://www.angi.com/articles/do-natural-gas-generators-produce-carbon-monoxide.htm">whether gas generators produce carbon monoxide</a>, know that natural gas generators do not produce carbon monoxide if they are functioning properly, as natural gas burns cleanly. However, if the generator malfunctions and the gas does not burn completely, there is potential for carbon dioxide to be produced. To prevent malfunctions, it's crucial to perform regular maintenance, including running the generator weekly and scheduling professional inspections every<b> 6 to 12 months</b>. Also, be sure to test your carbon monoxide detectors regularly to ensure they function in the rare case of the generator producing carbon monoxide.</p></div>

Q: Do I really need a generator transfer switch?

• <div><p>Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for <a href="https://www.angi.com/articles/what-is-an-electrical-emergency.htm">electrical emergencies</a>. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency. </p></div>

Q: How do I know what size of whole house generator to choose?

• <div><p>Generators are usually sized by running watts and starting watts. Ideally, you&rsquo;ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. <a href="https://www.angi.com/articles/electrical-load-calculation.htm">Calculate your home&rsquo;s electrical load</a> based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.</p></div>

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Verified Reviews for Generator Install pros in Pima, AZ

*The Angi rating for Generator Install companies in Pima, 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 Pima, 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 16, 2024

Reviewed in July 2024
Cale and his team are courteous and professional. They do quality concrete work and leave a clean job site. I recommend them without hesitation.
American Concrete Placement LLC
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Reviewed in August 2023
Jeremy is a great guy to work with. Thanks again for the best solar system out there
Sienna Roofing
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Reviewed in July 2023
I bought a new 5 ton air conditioner. The day it was installed (in May) it ran 9 hours solid without stopping, that I know of. I finally went to bed at 9:30 and it was still running. I called after about 5 hours and the guy was supposed to stop by on his way home. Never showed. The family room...
B & D AIR CONDITIONING
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Reviewed in May 2023
They were prompt and thorough with their work.
AAA Restoration & Carpet Cleaning
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Reviewed in June 2022
We were buying our home and wanted a third party company test to see if there is mold before we closed. We did not want a company that treats mold as we have found them to be untrustworthy in the past and quick to diagnose mold and treat. Luckily she did not find any mold after doing a very...
Tucson Mold Inspectors
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Reviewed in June 2022
Levi, was my technician. He was on time & while he was here he took his time, Articulate, very professional most of all knowledgeable. Levi gave me options to care for my AC/Heating. The service plan went with Signature Heating and Cooling, was very reasonable. SUPER HAPPY! I dare home owners...
Signature Heating, Cooling and Plumbing, LLC
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Reviewed in February 2022
Fair price, helpful scheduling to fit into my travel schedule. Bryce and Jayden installed the new surface and were professional and eager to answer any questions I had. The finished job looks great. Very pleased I chose this company for our project.
Guardian Garage PHX
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Reviewed in September 2021
The work was completed on time and structurally sound. The attention to detail, however, was lacking.
House Doctors Boise
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Reviewed in February 2021
I hired a different business outside of HomeAdvisor
Treasure Valley Exteriors
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Reviewed in January 2021
Grass Kings did a great job and cleaning out my rock landscape, it was really bad and now it looks terrific. I will use them again! They also cut back my tree limbs.
Grass Kings, LLC
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Find Generator install pros in Pima

Static Sun Electric and Solar, LLC

4.9(

)

Serving Pima, AZ and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Credit card accepted

"Extremely knowledgeable, excellent work, excellent price and next day install, permits and inspections of an emergency panel replacement during the holidays. Highly recommended."

Response time1 day

4 neighbors recently requested a quote

Recommended by88%of homeowners

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Worker Bee Home Services

New to Angi

Serving Pima, AZ and surrounding areas

Approved

Servicing Southern Arizona for fifteen years, we can handle most residential concerns from remodels to TV installs at a fair rate with a workmanship guarantee! \n\nAny size job can find a place on our schedule, just reach out and we'll lend a hand. We can help you build, plumb, drywall, remodel, paint, or trim your home or install electronics, repair appliances, and get your small engines running again! \n\nWe at Worker Bee believe in integrity and fairness at all times, and our first priority is always the client's happiness and trust. We come with experience, references, and knowledge to help guide you through any task or project. \n\nCall us today, and see for yourself!

+18

Serving Pima, AZ and surrounding areas

In business since 2001

Free estimates

Credit card accepted

"Our main installer was Jesus, and he carefully explained each step of the work and then went over all the information we would need to know. We are very happy with all three items, saving electricity with the SolaTube as we no longer have to turn lights on during the day in our Master bath dressing area, we hope that the Solar attic fan is helping to keep the house cooler by exchanging the air in the attic when it gets hot. In our small home office we replaced an old skylight with new double glass skylight with a shade system and this has made a big difference in the office. Sunshine Experts, LLC did a great job for us and we are very happy to recommend them when anyone asks us about our experience."

+20

Recommended by96%of homeowners

Serving Pima, AZ and surrounding areas

In business since 2008

Emergency services offered

Credit card accepted

"They were informative! It's a family business that is generational in their craft. They explained my unit to me and gave me tips to improve it's care. I will be using them in the future for maintenance."

Recommended by82%of homeowners

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RECO Solar and Electrical Solutions

5.0(

)

Serving Pima, AZ and surrounding areas

In business since 2014

Free estimates

Warranties offered

"They came out right away and fixed a minor electrical problem for me."

Response time3 days

Response rate100%

Recommended by100%of homeowners

Serving Pima, AZ and surrounding areas

In business since 2020

Emergency services offered

Credit card accepted

AIO provides computer support services for all PC platforms including Apple OSX/iOS, Microsoft Windows, and Google Android devices. \n\nWe are the only company on Angi.com with a BBB A+ rating providing nation-wide IT support on-site/remote services from over 1500 locations. You can call us directly at 832-402-1335, option 1 for sales, to be connected to a sales engineer if you need immediate help. You can also visit our website at https://aiosupport.net. We look forward to helping you!

Helping a Victim who was being Cyber-stocked

Recommended by91%of homeowners

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American Home Shield – Home Warranty

3.5(

5,688

)

Serving Pima, AZ and surrounding areas

In business since 1971

Credit card accepted

"My air conditioner was not working so I contacted my home warranty service and they sent a local company representative to checkout the problem. It was a capacitor - the technician installed the part and it has been working ever since."

Recommended by65%of homeowners

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My Computer Works, Inc.

4.0(

630

)

Serving Pima, AZ and surrounding areas

In business since 2005

Free estimates

Credit card accepted

"Extra polite and friendly staff."

Recommended by86%of homeowners

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Qualified Electrical Contractors, LLC

3.7(

)

Serving Pima, AZ and surrounding areas

In business since 2004

Free estimates

Warranties offered

Qualified Electrical Contractors, LLC takes great pride in solving your electrical problems with superior workmanship & dependable service. We believe our quality & exceptional value sets us apart.

Recommended by100%of homeowners

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Brinday Technologies LLC

5.0(

)

Serving Pima, AZ and surrounding areas

In business since 2023

Free estimates

Credit card accepted

We can take on a wide range of commercial Low Voltage projects to include full installation for new construction and retro-installation. We take pride in building a long-term relationship with our customers and provide honest and fair pricing. We believe in providing top quality products at affordable pricing. \nWE are family owned and operated business serving all of Arizona. \n\n

Response time7 hrs

Recommended by100%of homeowners

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Showing 1-10 of 25

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.

These advanced generators use a key fob or a smartphone app to remotely start, which is ideal for getting power back on immediately without venturing outside. This feature is more common on whole home generators, but you may be able to find it on large portable generators, too.

If you’re wondering whether gas generators produce carbon monoxide, know that natural gas generators do not produce carbon monoxide if they are functioning properly, as natural gas burns cleanly. However, if the generator malfunctions and the gas does not burn completely, there is potential for carbon dioxide to be produced. To prevent malfunctions, it's crucial to perform regular maintenance, including running the generator weekly and scheduling professional inspections every 6 to 12 months. Also, be sure to test your carbon monoxide detectors regularly to ensure they function in the rare case of the generator producing carbon monoxide.

Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for electrical emergencies. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency.

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

The Pima, AZ homeowners’ guide to generator installs

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

See all articles

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May 3, 2026May 3, 2026
How Much Does a Natural Gas Generator Cost? [2026 Data]
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How Much Does a Whole-House Generator Cost? [2026 Data]
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