What size generator do I need for my house?

• <div><p><a href="https://www.angi.com/articles/what-size-generator-do-i-need.htm">Generator size requirements</a> vary wildly among properties, but typical generator sizes are listed below based on home square footage:</p><ul><li><p>1,000 sq ft: 6–9 kW</p></li><li><p>1,500 sq ft: 7–10 kW</p></li><li><p>2,000 sq ft: 10–14kW</p></li><li><p>2,500 sq ft: 12–16kW</p></li><li><p>3,000 sq ft: 16–20kW+</p></li></ul><p>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.</p></div>

Get matched with top generator install pros in Lowell, VT

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: Can I use a generator to charge a back-up battery?

• <div><p>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.</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: Can a portable generator power an entire home?

• <div><p>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 <a href="https://www.angi.com/articles/installing-whole-house-generator.htm">whole-home generator</a> instead. </p></div>

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Verified Reviews for Generator Install pros in Lowell, VT

*The Angi rating for Generator Install companies in Lowell, VT 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 Lowell, VT 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 November 02, 2025

Reviewed in December 2022
This is the most thorough, professional, kind, generous, thoughtful, trustworthy, reliable, capable service I have ever hired in fifty years of business and home outsources services.
Northshire Cleaning
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Reviewed in August 2016
Jim came promptly and first installed the sensor on the motion detector. It was hard to remove the old one after being outside in the weather for years, but Jim persisted and got the replacement installed and working. The weather vane had blown off in very strong winds and was reinstalled on a...
H - H Construction LLC
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Reviewed in April 2015
Anthony was thorough in his explanation of the product, process, and timeline. The work crew was outstanding, very professional and kept the site clean. Would highly recommend. Grade A+ installation
Energy Aide, Div. of Coastal Windows/Doors/Exteriors
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Reviewed in May 2013
We contracted Pro-Builders to remodel a bathroom, add a stairway to our basement and to be the general contractor to add air conditioning. The bathroom and stairway job was estimated to cost $33,575 (the AC was a separate contract with the installers). The final bill brought the total for the...
PRO-BUILDERS CONSTRUCTION CO
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Reviewed in April 2013
Very professional job. Two teams came out - one worked on the basement unit, while another worked on installing the attic unit. The basement unit was a straightforward install, and was done in a few hours with hardly any mess. The attic unit install was a little more complicated, involving...
Indoor Comfort Team
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Reviewed in July 2012
Installation was excellent. Dan Nardi, owner of Hectic Electric and his team executed the installation over a 2 day period after the propane line was installed by Holton Propane Service. Overall excellent experience and will use again in future if need arises.
Hectic Electric Inc
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Reviewed in November 2011
Tom is incredible. I rarely spend time writing evaluations but in this instance where Tom Elias and Elias Electrical Service is concerned, I cannot say enough positive things about them. Although they are TWO hours away from me, they responded, communicated, provided exemplary top quality...
Elias Electrical Service
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Reviewed in October 2011
Contacted another pump co. and they would not install a pump I had bought ( their price for the same pump I bought was 250 more.) Ridgefield Plumbing came as scheduled, was curteous, prompt and did an excellent job installing a new pump ( including removing the old one) and replacing all the 1...
RIDGEFIELD PLUMBING & HEATING LLC
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Reviewed in June 2010
Generally we have heard much praise about this repair shop so we made the appointment to bring our car to them. We were very satified. About 15 yeARAS AGO THEY HELPED MY WIFE and MOTHER-IN-LAW WITH THE two children in the car who had a minor fire when the wheel bearings overheated while they...
Fletcher's Auto Repair
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Reviewed in July 2008
I was very pleased with their work. They were very professional, their product was high quality and the installment went very well.
Pella Windows and Doors
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Find Generator install pros in Lowell

Northstar Electric LLC

494 Church Rd.

4.94(

)

Northstar Electric LLC

494 Church Rd.

4.94(

)

Customers say: Quick response

Recommended by 100% of Angi customers

Northstar Electric is a responsive and reliable provider of electrical services for both residential and commercial clients. Our team of experienced professionals is dedicated to providing the highest quality of electrical services, ensuring that each job is completed to the highest standard. We are proud to be your trusted and dependable source for all your electrical needs. Our commitment to excellence and customer satisfaction is unmatched in the industry. We are confident that you will be pleased with the quality of services and results that we deliver. Have you worked with us before? We'd love your feedback. Consider leaving a review on the Testimonials page or on Google.

"Excellent work and on time in an extremely difficult location."

Doug T on April 2021

"Excellent work and on time in an extremely difficult location."

Doug T on April 2021

Sugar Hollow Electric

2110 Sugar Hollow Rd

No reviews yet

Sugar Hollow Electric

2110 Sugar Hollow Rd

No reviews yet

22 years of experience

Additional email - [email protected].

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

Powers Generator Service

5 Business Center Dr

4.25(

)

Powers Generator Service

5 Business Center Dr

4.25(

)

Customers say: Super punctual

31 years of experience

Additional address - PO Box 10005, Swanzey, NH 03446. Additional contact name - Sheena Royce. Number of Employees: 45. We offer Financing.

Generator Install questions, answered by experts

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.

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.

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.

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.

The Lowell, VT homeowners’ guide to generator installs

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