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Avatar for New Phase Electric, LLC
New Phase Electric, LLC
5.0(
7
)
Fixed Generator - InstallPortable Generator - Install

Serving Columbine, CO and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"Installed a 12 circuit generator cutover panel. Works great. Would have preferred the cables to be behind the drywall. But a solid job that passed Jeffco and Xcel inspections easily."
Brent's house
custom house
Custom light's
custom lights
Govee lights

+1

Response time2 days
Response rate100%
7 neighbors recently requested a quote
Avatar for Productive Electric, LLC
Productive Electric, LLC
4.9(
14
)
Generator - Install - For Business

Serving Columbine, CO and surrounding areas

Approved

In business since 1992

Free estimates

Credit card accepted

"The electrician, Tom, and the Service Manager, Bill, were exceptionally friendly and worked hard to figure out how to accomplish everything we wanted and needed. They also have amazing value for the work."
Response time1 day
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for JL ENGINEERING SERVICES LLC
JL ENGINEERING SERVICES LLC
5.0(
17
)
Portable Generator - Repair

Serving Columbine, CO and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

"Back in 2024, Jesus and his team did a phenomenal job adding a new circuit/outlet in our garage for our new chest freezer and outlets with USBs for our e-bikes and other gear. He came in the morning to talk about the project and give and estimate and they were able to complete the work same day even though it was a bigger project than I’d originally described in my request. He explained the options well and was able to put everything exactly as we wanted. Very happy with how that project turned out. This year, we hired Jesus’s team again to install new light fixtures in our bathroom (vanity lights and sconces) and move some outlets. Again he and his team did a great job and were lovely to work with. We’ll be reaching out for more assistance with our bathroom reno."
Avatar for TORQ Electricians
TORQ Electricians
4.8(
19
)
Portable Generator - Install

Serving Columbine, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2012

Free estimates

Emergency services offered

"I’m extremely pleased with the work Jon from TORQ Electricians recently completed in my home. This project was much larger than his visit the week before, and once again he delivered outstanding results. He replaced switches and outlets throughout the house, many of which had begun to fail due to age, and the upgrades have given us real peace of mind when it comes to safety. Jon also made several thoughtful recommendations—installing dimmer switches in the kitchen and study, and suggesting a different dimmer style for our living room ceiling fan. These changes have noticeably improved both the functionality and the atmosphere of those rooms. He even identified and replaced a GFCI breaker in the panel that wasn’t up to code, ensuring everything is now safe and compliant. The work has refreshed the look of our interior, and we couldn’t be happier with the results. We’re very glad we chose TORQ Electricians and highly recommend Jon to anyone needing professional, reliable electrical work"
20 Amp Circuit
Circuit
Electrical Panel
Outlet
Power Stake

+9

7 neighbors recently requested a quote
Recommended by42%of homeowners
Avatar for DN Electric LTD
DN Electric LTD
5.0(
7
)
Portable Generator - Install

Serving Columbine, CO and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

DN ELECTRIC LTD proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today! \n

Electric
Basement receptacles
Basement receptacles
Basement receptacles
Basement receptacles

+1

8 neighbors recently requested a quote
Avatar for Mr. Electric of Littleton
Mr. Electric of Littleton
4.6(
11
)
Portable Generator - Install

Serving Columbine, CO and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

Our licensed electricians at Mr. Electric provide residential and commercial electrical repair and installation services. Schedule a nearby electrician today for electrical panel replacements, whole-house rewiring, EV charger installations, ceiling fan replacements, and all other general electrical needs. We accept credit cards, checks, and offer great payment plans options as well. Call now to book your appointment!

Can Lights
Response time10 mins
Response rate100%
Recommended by16%of homeowners
...
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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.

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.

If your home already has a grinder pump and you’re still noticing issues (like frequently clogged toilets and sinks), it could be time to upgrade your grinder pump. Start by checking your existing horsepower. If there are four or fewer people living in your home, using a 1/2-horsepower grinder pump should be sufficient. Larger households should consider investing in a 1-horsepower grinder pump to maximize wastewater removal efforts.

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.

DIY is possible for basic setups. Professional installation ensures safe and proper electrical connections.

The Columbine, CO homeowners’ guide to generator installs

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