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Avatar for Harrison Electric, Inc.
Harrison Electric, Inc.
4.6(
435
)
Portable Generator - Install

Serving Greenfield, MN and surrounding areas

Approved

In business since 1985

Emergency services offered

Credit card accepted

"Kevin was great! He was on time and took the time and effort in explaining all the electrical stuff we needed to do around the house. His attention to detail was amazing! We needed to install hanging lights above our dining table and add outdoor lights to our garage. He was meticulous and precise and explained everything well. It was cost effective and quick! 100% recommend Harrison and will hire them again"
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Response time9 hrs
Response rate100%
7 neighbors recently requested a quote
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
5 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Aquarius Home Services
Aquarius Home Services
4.6(
260
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Greenfield, MN and surrounding areas

Approved

Super Service Award Winner

In business since 1987

Free estimates

Emergency services offered

"We are very satisfied with the minisplit system installation. The equipment works great. The installation team did a fantastic job explaining what they were going to do, getting it done and cleaning up before they left."
Additional Photos
Additional Photos
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Our Team
Response time12 hrs
Response rate100%
9 neighbors recently requested a quote
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

138 neighbors recently requested a quote
Recommended by89%of homeowners
Ben Otto Electric, LLC
4.4(
35
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+2 more

Serving Greenfield, MN and surrounding areas

In business since 2014

"Gave great advice and helped me problem solve over the phone. Very honest - in the end he said I just needed a new microwave and not electrical work. Offered to come do microwave install if I needed help. Gave free advice - I wanted to compensate him for his time and advice, but he just suggested I leave a good review - which I was very happy to do! Very friendly and saved me money!"
Response time1 day
Recommended by80%of homeowners
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Generator Install questions, answered by experts

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

Potential benefits of using a natural gas generator include reducing your carbon footprint, lower likelihood of carbon monoxide exposure, budget-friendly operating costs, and low-maintenance, continuous fuel supply. Some possible drawbacks, though, include higher initial installation costs, dependency on a natural gas supply, and installation complexity. Keep in mind that pros and cons will vary based on the type and brand of natural gas generator. 

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.

Generators are safe to use as long as they are installed and operated correctly according to the manufacturer's recommendations. The most critical safety tips are to never use a portable or fuel-powered generator inside an enclosed space due to the risk of lethal carbon monoxide poisoning; always operate it outdoors where fumes can dissipate away from your home. Additionally, never attempt to connect a generator to your home’s electrical panel yourself—hire a professional to ensure the setup meets safety standards. Finally, avoid overloading the generator by not connecting more appliances than it is rated for, as this can damage your equipment or cause a fire.

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 Greenfield, MN homeowners’ guide to generator installs

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