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Avatar for Mohs Electric
Mohs Electric
4.7(
17
)
Portable Generator - Install

Serving Greenfield, MN and surrounding areas

Approved

In business since 2015

Customers say: Quality work

"Mohs was really great. The owner called me almost immediately with a quote and installed my doorbell the next day. He was very friendly, courteous, and professional. Super fast service, too."
Response time1 day
4 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Total Comfort Heating and Cooling
Total Comfort Heating and Cooling
4.5(
443
)
Fixed Generator - InstallFixed Generator - Repair

Serving Greenfield, MN and surrounding areas

Approved (Corporate)

In business since 1956

Free estimates

Emergency services offered

Experience the Total Comfort Difference, since 1956. We sell different. We service different.\n\nAs a certified Carrier dealer and a recipient of the 2024 President’s Award, you can "Turn to the experts" with Total Comfort proudly bringing Minneapolis-St. Paul expert heating and cooling solutions. From AC repair to furnace replacement, maintenance, and more, our skilled, award-winning team delivers quality, affordable HVAC services across the Twin Cities—from Brooklyn Park to Eden Prairie and everywhere in between!\n\nSince 1956, Total Comfort has been doing whatever it takes to ensure each customer is 100% satisfied with their heating and cooling service. As a locally owned, customer-focused company, our #1 goal is providing honest, quality work to our Minneapolis-St. Paul neighbors. Every job is performed with respect and courtesy, leaving you satisfied in a more comfortable home.\n

184 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for 4-U Electric LLC
4-U Electric LLC
5.0(
11
)
Portable Generator - Install

Serving Greenfield, MN and surrounding areas

In business since 2024

Free estimates

Emergency services offered

"4U Electric is the best company out there. They pay attention to the details in customer needs, present options and thoroughly explain them and deliver a quality and safe product! Thank you!"
Swimming Pool
Tom (right) Mike (left)
Response time5 hrs
Recommended by90%of homeowners
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Generator Install questions, answered by experts

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

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.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

The Greenfield, MN homeowners’ guide to generator installs

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