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American Assembled Whole House Fans

Comfort Cool whole house fans.
Cool your home with the night air.

American Assembled whole house fans that cut your A/C bill in half. Or more. Find the right one for your home in 60 seconds.

Find My Fan → Shop All Fans
50–90%
A/C savings
10–15 yr
Motor warranty
60-day
Risk-free trial
Up to 4,478 CFM Airflow
49 dBA Among the Quietest
From $0.04 Per Hour
American AssembledFrom Our California Facility
CEC Title 24 CertifiedIndependently verified CFM
10–15 Year WarrantyUp to 40,000-hour rating
60-Day Money BackNo questions asked
Free ShippingEvery order, every state
Two Tiers. One Promise.

Premium engineering or smart value. Both built right.

Comfort Cool owns and builds two distinct lines of whole house fans. Choose the one that fits your home, your climate, and your budget.

Elite Series
Centric Air

German-engineered, precision-balanced, and acoustically tuned. The Mercedes of whole house fans.

  • Power vs. competition+30%
  • Energy use vs. competition−33%
  • Motor warranty15 years
  • Operational rating40,000 hours
From$1,049
Explore Centric Air →
Performance Series
QA Deluxe

Heavy-duty American engineering. The smart-value choice that outperforms every comparable fan in its class.

  • HousingAluminum spun
  • Damper insulationR-5 standard
  • Motor warranty10 years
  • Assembled inCalifornia
From$849
Explore QA Deluxe →

Not sure which line is right for you? Compare side-by-side →

How It Works

Cools your home in minutes. Costs pennies per hour.

A whole house fan is the smartest cooling investment most homeowners haven't heard of. Here's how 5 minutes of setup transforms your evenings.

A Mediterranean villa under blazing midday sun on a hot summer day.
01. Daytime
Heat builds.

Your attic hits 140°F. The walls and ceilings soak up that heat all day, and your A/C burns kilowatts trying to keep up.

The same villa at dusk with warm interior lights glowing as the air cools outside.
02. Evening
You flip the switch.

Outside cools faster than inside. Open a few windows and turn on your Comfort Cool fan. It instantly pulls cool outdoor air through your home.

A moonlit bedroom with the window open and sheer curtains drifting in the cool night breeze.
03. Overnight
Whole home cools.

The fan exhausts the day's heat through your attic vents, dropping your home temperature 15–25°F in under an hour. You sleep cool. Your A/C stays off. Your bill drops 50–90%.

Savings Calculator

See exactly what you'd save.

Tell us a little about your home. We'll show you what a whole house fan would do for your energy bill, and how fast it pays for itself.

Your home
Use my actual A/C bill instead →
Estimated annual savings
$—
in reduced A/C costs during your state's cooling season
Your fan pays for itself in —.
Over 10–15 years of warranty coverage, you save approximately —.
How we calculated this

Estimates based on U.S. EIA Electric Power Monthly (residential rates by state), DOE Building America climate zones, and the Whole-House Fan Council's documented 50–90% A/C reduction range. Some states span multiple climate zones; the predominant zone is used.

Quick Start

Find your size in three seconds.

Click the size that matches your home and we'll show you only the fans that fit. Pre-configured for your space.

Small Home
Up to
1,500 ft²
Condos, single-story homes, individual rooms
1,918–2,425 CFM · From $849
Most Popular
Average Home
1,500–
2,500 ft²
Most American homes, single or two-story
3,242–3,945 CFM · From $1,049
Large Home
2,500 ft²
and up
Two-story homes, large floor plans, custom builds
3,921–4,478 CFM · From $1,149
Most Popular

Our top-selling configurations.

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Performance
QA Deluxe 5500 Performance Series whole house fan with insulated ductwork and damper box
QA Deluxe 5500
Best-seller for average homes
3,945
CFM
2,400
Sq Ft (1-story)
10 yr
Warranty
$1,049
Configure →
Elite
Centric Air 3.4 Elite Series whole house fan with insulated ductwork and damper box
Centric Air 3.4
German-engineered for two-story homes
3,242
CFM
2,400
Sq Ft (1-story)
15 yr
Warranty
$1,449
Configure →
Elite
ECM Centric Air ECM 4.0 Elite Series whole house fan with energy-saving ECM motor
Centric Air ECM 4.0
Maximum airflow for large homes
4,164
CFM
3,000
Sq Ft (1-story)
15 yr
Warranty
$1,949
Configure →
Why Comfort Cool

The only whole house fan brand that builds its own.

Manufacturer + Brand Owner

We design and build both Centric Air and QA Deluxe in our California facility. No middleman, no markup, no compromise.

Independently Verified

Every CFM rating is CEC-certified for California Title 24 by an independent testing agency. No inflated specs, ever.

Real Engineering

German-engineered motors, R-5 to R-13 insulated dampers, ECM efficiency. Built to industrial spec, priced for homes.

Backed for Life

10–15 year motor warranty (by line). 60-day money back guarantee. Lifetime support from a real human in California, not a script.

Customer Reviews

Built right. Backed right. Loved by homeowners.

Real customer reviews live on our brand sites and at major retailers. Every review is on a platform you can verify directly. We don't host a moderated review system of our own.

★★★★★
"You actually answer the phone."Philip M., Duncan WI · Centric Air 4.0 · centricair.com
★★★★★
"The Mercedes of whole house fans at a VW price."Verified CA owner · Centric Air · factoryfansdirect.com
★★★★★
"Why didn't we do this sooner?!?!"Jim P. · QA Deluxe · qadeluxe.com
Read more reviews →
Resource Hub

Buy with complete confidence.

View all articles →
Sizing Guide

How to size a whole house fan for your home

How to match your home's square footage and stories to the right model, why two-story homes need more airflow, and how to factor in attic ventilation.

Read the guide →
Motors Explained

ECM vs Standard motors: what's actually worth it?

The real-world payback math on energy-efficient ECM motors, with break-even calculations by climate zone.

Read the guide →
Damper Guide

R-5 vs R-13: choosing your damper

Why insulated dampers matter, how much you actually lose with the wrong one, and the climate-by-climate recommendation.

Read the guide →