Three Crowns Electric

Home Generators

Longmont, CO

Boulder County • Licensed & Insured

50% of our profit back if we're over time or over budget.

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Home Generators • Longmont

Home Generator Installation in Longmont, Colorado

Longmont homeowners and businesses count on Three Crowns Electric for home generator installation. We've been serving Boulder County since 2002 — our trucks are on Longmont streets every week, from Old Town Longmont and Prospect New Town to the neighborhoods that need us most.

Whole-home standby generator installation — Generac, Kohler, Briggs & Stratton — including automatic transfer switch, gas or propane connection coordination, concrete pad, and load shedding configuration. Northern Colorado winter storms and rural power reliability issues make standby generators especially valuable in towns like Wellington, Berthoud, Johnstown, and Estes Park.

We cover every Longmont neighborhood — Old Town Longmont, Prospect, Mountain Brook, Southmoor Park — and zip codes 80501, 80503, 80504. Whether you're in a 1970s ranch or a brand-new build, the scope is the same: diagnosis first, written quote second, work starts only when you say go.

Common in Longmont

What We Handle in Longmont

  • Rural homes with unreliable grid power
  • Electric well pump that fails with the power
  • Medical equipment that can't afford downtime
  • Mountain homes with multi-day winter outages
  • Home offices where downtime costs real money

Home Generators in Longmont

$5,000–$15,000

Pricing for home generators in Longmont depends on your home's setup, panel condition, and scope of work. Free estimates — written on paper, no pressure.

50% of our profit back if we go over the quoted timeline or bust the estimate. In writing.

Frequently Asked Questions

Common questions about Home Generators in Longmont.

What size generator do I need?

Depends on whether you want to run the whole house or just the essentials. A 22kW unit covers most 2,000–3,500 square foot homes running AC, well pump, fridge, heat, and most circuits. A smaller 14kW unit covers the essentials — heat, fridge, well pump, some lights. We do a load calculation and tell you what actually fits your house.

Natural gas or propane?

If you have natural gas service at the house, that's almost always the right answer — unlimited runtime, lower cost per hour, nothing to refill. Propane is the play for rural properties without gas service. Either way, we coordinate the fuel connection with your gas company or propane supplier.

How long does a generator installation take?

Most installs are two to three days on site, spread across a couple of weeks for permit, inspection, and fuel connection. The generator sits on a concrete pad, the automatic transfer switch goes next to your main panel, and the gas line runs from your meter or propane tank. We handle the whole thing including the inspection.

Does it start automatically when the power goes out?

Yes. The automatic transfer switch senses utility power loss, starts the generator, and switches the house over in about 15 to 30 seconds. When utility power comes back, the transfer switch switches back and shuts the generator down. Runs a weekly self-test on its own.

Get in Touch
With Our Team

We make it easy to connect with a licensed electrician who understands your needs. Reach out by phone, email, or by filling out the simple form below — and experience the Three Crowns Electric difference.

(970) 645-3114 Admin@Threecrownselectric.Com
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