PATTERSON · Wall-mount fan · Medium airflow
Patterson H18A Yoke-Mount High-Velocity Fan
Tap a photo to enlarge it; use the arrow keys to move between photos.
Photos: Amazon product listing ↗ · refreshed Sep 16, 2026
Patterson H18A is a verified current yoke-configuration high-velocity circulation fan with a 17-inch propeller, 3,800 CFM, 1/2 HP, and a listed 12-foot cord.
What works
- Current manufacturer SKU H18A directly matches the yoke configuration
- Manufacturer lists a 17-inch propeller, 3,800 CFM, 1/2 HP, and a 12-foot cord
What doesn't
- Current A electrical wording differs from the legacy listing title
- Yoke configuration does not establish a wall, ceiling, or other installed mounting method
Who it's for
Good fit
- Targeted industrial air circulation where the specified A electrical configuration can be confirmed
Look elsewhere if
- Outdoor-air ventilation or exhaust sizing without a separate engineered air path
Verified current configuration
Patterson’s current product JSON identifies SKU H18A as 18" / A: 115V/208-230V (12' Cord) / Yoke (Standard). That exact SKU supports this record’s A-series yoke configuration and listed 12-foot cord. The older listing title says 115/220V; current manufacturer wording says 115V/208–230V. Confirm the nameplate and supplied electrical configuration before purchase. No numeric voltage is published here because the manufacturer lists a multi-voltage configuration.
Published fan performance
The manufacturer’s 18-inch size section lists a 17-inch propeller, 3,800 CFM, and 1/2 HP. The 17-inch measurement is the actual propeller diameter, not the nominal 18-inch product size. Patterson does not state a static-pressure test condition next to that CFM value, so treat it as a listed circulation rating rather than delivered ventilation flow. The yoke option does not prove a wall, ceiling, or other installation method.
Buying limits
A 12-foot cord is listed for the current A configuration. Plan structural support, required fasteners, electrical connection, guard clearance, and any ventilation path separately. This high-velocity circulation fan does not by itself provide an outdoor-air, supply, or exhaust system.
Sources and alternatives
The manufacturer specification page provides the performance figures; its current model-variant data identifies the model and electrical option. Compare mounted industrial fans by their actual propeller diameter, supplied hardware, and electrical configuration. A higher CFM figure alone does not establish that a different model will fit the installation.
Before you buy
Installation and buying checks
Use these questions to verify the exact configuration. Linked facts are cited; unlisted details stay questions.
Mounting and support
What mounting method and hardware does the exact unit require?
Clearance and handling
Do the listed physical details leave enough clearance for installation, adjustment, and service?
- Blade diameter: 17 inManufacturer source ↗
Electrical match
What voltage and connection requirements does the exact unit specify?
Airflow at the job
Is the listed airflow rated at an operating point that matches the job after placement, obstructions, and system resistance are considered?
- Airflow (high): 3,800 CFMManufacturer source ↗
Location requirements
Does the site require an environmental rating or guard? Neither is listed here.
Put 3,800 CFM in context
The Patterson H18A Yoke-Mount High-Velocity Fan has a listed airflow of 3,800 cubic feet per minute. The table compares this rated volume with example room volumes. It does not measure fresh-air exchange, air speed at your body, or room coverage.
| Room | Size | Nominal room volumes / hour | Nominal pass interval |
|---|---|---|---|
| One-car garage | 22 × 12 × 9 ft · 2,376 ft³ | 96× | 38 s |
| Two-car garage | 22 × 20 × 9 ft · 3,960 ft³ | 58× | 1 min |
| Workshop | 40 × 30 × 12 ft · 14,400 ft³ | 16× | 3.8 min |
| Warehouse bay | 100 × 50 × 16 ft · 80,000 ft³ | 2.9× | 21 min |
A circulation fan does not by itself replace indoor air. Exhaust airflow depends on a makeup-air path and system resistance. Use installed outdoor airflow for ventilation calculations.
Formula: airflow × 60 ÷ room volume. CDC explains the ventilation form of this equation; here the input is a catalog rating, so the result is a volume comparison.
Listing details
What we know about this listing
Listing data was imported on September 15, 2026. Each specification can have a different source-check date; the evidence below is the most precise source information available here.
Sources for 4 listed specifications
- Blade diameter: Patterson High-Velocity Fans · checked Sep 15, 2026 · 18-inch size section, FEATURES propeller row and SPECS CFM/HP rows — “Propeller: 17” Diameter, 3-Blade Galvalum, 33°; CFM: 3800; HP: 1/2.”
- Blade diameter: Patterson High-Velocity Fans product JSON · checked Sep 15, 2026 · product.variants[] record with sku `H18A` — “SKU H18A: 18" / A: 115V/208-230V (12' Cord) / Yoke (Standard).”
- Airflow (high): Patterson High-Velocity Fans · checked Sep 15, 2026 · 18-inch size section, FEATURES propeller row and SPECS CFM/HP rows — “Propeller: 17” Diameter, 3-Blade Galvalum, 33°; CFM: 3800; HP: 1/2.”
- Airflow (high): Patterson High-Velocity Fans product JSON · checked Sep 15, 2026 · product.variants[] record with sku `H18A` — “SKU H18A: 18" / A: 115V/208-230V (12' Cord) / Yoke (Standard).”
- Motor: Patterson High-Velocity Fans · checked Sep 15, 2026 · 18-inch size section, FEATURES propeller row and SPECS CFM/HP rows — “Propeller: 17” Diameter, 3-Blade Galvalum, 33°; CFM: 3800; HP: 1/2.”
- Motor: Patterson High-Velocity Fans product JSON · checked Sep 15, 2026 · product.variants[] record with sku `H18A` — “SKU H18A: 18" / A: 115V/208-230V (12' Cord) / Yoke (Standard).”
- Cord length: Patterson High-Velocity Fans · checked Sep 15, 2026 · 18-inch size section, FEATURES power-cord row — “Power Cord (115V Only): 12’ Length (Switch Optional).”
- Cord length: Patterson High-Velocity Fans product JSON · checked Sep 15, 2026 · product.variants[] record with sku `H18A` — “SKU H18A: 18" / A: 115V/208-230V (12' Cord) / Yoke (Standard).”
Photos illustrate the listed model. Confirm the current variant, included hardware, and finish with the seller before purchase.
Similar wall-mount fans
See all →Wall-mount fan · PATTERSON
Patterson H18B Yoke-Mount High-Velocity Fan
- 3,800 CFM
- 17 in
- 1/2 HP
Wall-mount fan · Air King
Air King 9020 20-Inch Wall-Mount Fan
- 3,670 CFM
- 20 in
- 1/6 HP
