Skip Content

Blower,Induced Draft close
close x

Using 360° Viewing:

  1. Rotate: Use top-to-bottom, side-to-side by use of mouse arrow.
  2. Zoom In: Double click on image.
  3. Zoom Out/Reset: Put photo at full zoom & then double click.
Megaphone How can we improve our Product Images?

Blower, Induced Draft

Price $421.25 / each

Activate Now

to save with

Select AdvantageSM

Please sign in or register to access lists

Confirm ZIP Code to determine availability.


Invalid Zip Code


Ship to: (Change)


Invalid Zip Code

  • Item # 4KA73
  • Mfr. Model # HS1
  • NSN # 4140-01-486-4727
  • UNSPSC # 40101601
  • Catalog Page # 3870
  • Shipping Weight 12.76 lbs.
Country of Origin USA Country of Origin is subject to change.
Note: Product availability is real-time updated and adjusted continuously. The product will be reserved for you when you complete your order. More

Product Details

Mechanically vents Category 1 heaters through a wall, eliminating the need for a traditional chimney. Interlocks with any 24/120VAC burner circuit. Features adjustable pre/post purge, LED status indicators, and fault code memory. Vent Hood No. 4C845 is recommended for use with this power venter. Unit is ideal for sidewall vent furnaces, boilers, water heaters, pool heaters, and unit heaters. Use for electric to gas conversions, heating equipment upgrades, new construction, and replacing chimneys.

View More

Technical Specs

  • Item Induced Draft Blower
  • Type High Temperature
  • Vent Pipe Dia. (In.) 4 or 6
  • Inlet and Outlet Dia. (In.) 4
  • Voltage 115
  • Amps 1.26
  • Watts 95
  • Height (In.) 7-7/8
  • Width (In.) 11
  • Depth (In.) 7
  • Application Used for Side Wall Venting Commercial Natural Gas or LP Fired Equipment Including Boilers, Water Heaters and Unit Heaters.
  • Construction Material Aluminized Steel Housing and Blower Wheel
  • Agency Compliance ETL Listed to UL378 and CAN3-B255-M81
  • Remarks View Catalog Page For Selection Criteria
  • Includes UC1 Interlock Control, Fan Proving Switch, Adjustable Damper, Vibration Isolators
Megaphone How can we improve our Technical Specifications?

Compliance and Restrictions


Product availability based on selecting either shipping or pick up and a location. Dismiss

Replacement Parts

Need help finding replacement parts? Please use the list below or call 1-800-GRAINGER (1-800-472-4643)

Alternate Search Terms

Customer Reviews

Rated 5 out of 5 by 1reviewer.
Rated 5 out of 5 by Product is of highest quality. Solid feel. Great Fit. EZ install. We use it on a pizza oven that runs 12 hours a day, 7 days a week at high temps, and get about 3 years life out of it consistantly. January 1, 2013
  • 2016-04-27 T23:44:57.643-05:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_1, tr_1
  • loc_en_US, sid_4KA73, prod, sort_default
1-1 of 1

Product Reviews Disclaimer:
Grainger is neither responsible for, nor does it endorse, the content of any product review or statement posted. Any statements posted constitute the statements of the poster and are not the statements of Grainger. The statements posted by Grainger employees with the Grainger employee badge represent the views of such employees and are not the statements of Grainger. Grainger makes no representations as to the appropriateness, accuracy, completeness, correctness, currentness, suitability, or validity of any product review or statements posted, including those posted by employees with the Grainger employee badge, and is not liable for any losses, injuries or damages which may result from any such product review or statements. Use of any linked web site provided in a product review or post is at the user's own risk.