Three Crowns Electric

Whole House Fan

Longmont, CO

Boulder County • Licensed & Insured

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

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Whole House Fan • Longmont

QuietCool Whole House Fan in Longmont, Colorado

Longmont homeowners and businesses count on Three Crowns Electric for quietcool whole house fan. 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.

Professional installation of QuietCool whole-house fans to pull cool morning air through the home and exhaust it out of the attic. Northern Colorado's low humidity and cool overnight temperatures make whole-house fans extraordinarily effective here — most homeowners cut AC costs by 50–90%. Includes attic venting verification, damper install, and app-enabled controls.

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

  • AC bill climbing every summer
  • House holds heat long after the sun goes down
  • Existing attic fan too loud or underperforming
  • Wanting to cool the whole house instead of one room
  • New construction or remodel with good attic venting

Whole House Fan in Longmont

$1,500–$3,500

Pricing for whole house fan 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 Whole House Fan in Longmont.

What's the difference between a whole-house fan and an attic fan?

An attic fan exhausts hot air out of the attic only — it doesn't cool the living space. A whole-house fan pulls cool outdoor air through your open windows, across every room, and out through the attic vents. The whole house gets the cold air, not just the attic. It's a different machine with a much bigger effect.

How much does a QuietCool whole-house fan cost installed?

Typical range is $1,500 to $3,500 depending on the unit size, the complexity of the ceiling install, and whether your attic needs any additional venting. A mid-sized QuietCool Trident Pro or Stealth Pro installed in a typical single-story home lands around $2,200 including permit and final.

Do I need more attic venting for a whole-house fan to work?

Sometimes. The fan has to push all that air out of the attic, and if the attic doesn't have enough exhaust venting, the fan can't move air effectively and can pressurize the attic. We check your existing venting first and tell you what, if anything, needs to be added before we install the fan.

How much can a whole-house fan cut my AC bill?

In Northern Colorado's climate, most homeowners we install for cut AC runtime by 50 to 90 percent. We're in a dry high-desert climate with big overnight temperature drops — the fan is closer to free cooling than any other option on the market. The savings depend on your AC size and how disciplined you are about opening windows in the evening.

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
Monday – Friday 7:30 am - 5 pm

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