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Avatar for Harrison Electric, Inc.
Harrison Electric, Inc.
4.6(
407
)

Serving Chaska, MN and surrounding areas

Approved

In business since 1985

Emergency services offered

Credit card accepted

"Harrison Electric, Inc completely understood my needs as a customer. I needed lights installed in an older home, not a sales song and dance. They came in, and focused specifically on what I WANTED to be done, and then provided a methodical assessment on what COULD be done in my older home. Together, then and there, we developed an installation plan that both met my needs without compromising the safety of the home, and at honest price that wasn't bloated with extra sales add-ons. I hired them on the spot, and they took care of all of my electrical needs that very same day. During the entire installation process, they were extremely respectful of my home, and periodically checked in with me to demonstrate progression of work. If you are recent homeowner, looking for an electrical company who understands efficiency of means, meaning, making minor lighting and switch updates without it costing you an arm and a leg, or bloating the quote with sales add-ons then Harrison Electric, Inc is the way to go. Highly recommend."
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Response time9 hrs
Recommended by90%of homeowners
Avatar for Randy's Electric & Plumbing
Randy's Electric & Plumbing
4.6(
2,943
)

Serving Chaska, MN and surrounding areas

Approved

In business since 2002

Emergency services offered

Warranties offered

"I left a previous review after Mike with Randy's Electric came out to look at the job I wanted completed. That went great and I stated that if I went forward with the project I would hire him. Well, I went forward with the project and could not be happier. Everything went smooth on the date of installation. After discussing the location of the plug in site Mike thought the best location would be in a spot which required him to do extra wiring but there was no change in cost. He was excellent at explaining what he was doing and answering my questions. He even took the time to test everything with the generator hooked up to the transfer switch to make sure we everything worked properly. I have more electrical projects coming up and will definitely be hiring Mike at Randy's Electric. I recommend you do too! Oh and a really great perk is that Randy's Electric offers "same as cash" financing. I applied ahead of the start date and the process was super quick and easy. That really helped out."
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+10

Response time11 hrs
Response rate97%
21 neighbors recently requested a quote
Avatar for Aquarius Home Services
Aquarius Home Services
4.6(
260
)

Serving Chaska, MN and surrounding areas

Approved

Super Service Award Winner

In business since 1987

Free estimates

Emergency services offered

"We had a humidifier installed. They installed it quickly and professionally. The installer Jimmy was very helpful and even gave me a couple pointers in regards to installing a wifi thermostat. I've always had great experiences with Kath/Aquarius home services and will definitely use them again."
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Response time10 hrs
9 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Anchor Electric, LLC
Anchor Electric, LLC
5.0(
19
)

Serving Chaska, MN and surrounding areas

Approved

Super Service Award Winner

In business since 2004

Free estimates

Offers commercial services

"We hired Anchor Electric to put our EV charger in and upgrade our service to 200 Amp in our garage. They do very professional work. They went out of their way to do it right and we were very happy. Highly recommend."
Response time7 hrs
Response rate92%
5 neighbors recently requested a quote
Avatar for MUELLER ELECTRIC CO LLC
MUELLER ELECTRIC CO LLC
5.0(
20
)

Serving Chaska, MN and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Mike did a great job installing over-garage lighting and Ring system. Professional, friendly, efficient. Will definitely have him again for future electrical work!"
Response time3 hrs
Response rate97%
8 neighbors recently requested a quote
Avatar for Hero Plumbing, Heating Cooling and Electrical
Hero Plumbing, Heating Cooling and Electrical
4.3(
804
)

Serving Chaska, MN and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"The technician was very knowledgeable, friendly and helpful. He did an excellent job providing advice about the project and installing our natural gas heater according to our directions. It did take a little longer than expected, but nothing major.Also, because of this, the technician was called away to check on other jobs and to pick up parts. However, he kept us advised and made sure to take our schedule into consideration."
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Hero Coming Soon

+9

Response time10 hrs
190 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for DJ's Home Services
DJ's Home Services
4.7(
77
)

Serving Chaska, MN and surrounding areas

Approved

Super Service Award Winner

In business since 1971

Emergency services offered

Warranties offered

"They did an amazing job replacing our leaking hot water heater. Of the five estimates we got, they were the only one to actually come out and look at the job site in person. After a very respectful negotiation we came to terms and they got down to work. Don did an amazing job, and was literally out in three hours. For the same price as our other bids, they installed a much superior water heater, and their workmanship was flawless . Could not be happier, would recommend them to everybody."
DJs Air Conditioner
DJs Furnance
DJs Boiler Repair
DJs Drains
DJs Electrical Panel

+40

Response time1 day
Response rate96%
180 neighbors recently requested a quote
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Generator Install questions, answered by experts

You can determine what size generator you need for a transfer switch by matching the switch to the largest outlet on your generator. Larger generators can power up to 10 circuits, while most 5,000-watt generators can provide power to six circuits. So, if your generator’s largest outlet is 30 amps, you’ll need a 30-amp transfer switch.

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 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.

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.

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.

The Chaska, MN homeowners’ guide to generator installs

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