OHI Electric

Phone: 513.421.2714
Fax: 513.385.1904

info@ohielectric.com

9010 Goldpark Drive
West Chester, Ohio 45011

Whole House Fans

Go green with one of these whole house fan products

Tamarack Technologies, Inc. HV1600 R38 HV1000 R38 & Ghost AirScape Whole House Fans

AirScape 1.0 WHF

CFM 1047 on high, 600 on low
Twin energy-efficient fans
Cost-Effective 78W on high
Super quiet 52 dBA on high
Wireless Remote ready

AirScape 1.7 WHF

Impressive 1712 CFM on high, 1000 on low
Four super efficient fans
Whisper quiet - 55 dBA on high
Low energy consumption - 157W on high
Wireless Remote ready

AirScape 2.5 WHF

22 inch Industrial Grade Fan delivers 2516 CFM on high, 2110 CFM on low
Engineered ducted design enhances noise reduction
Very quiet - 53 dBA on high
Low energy consumption - 288W on high
Wireless Remote ready

How to size a fan for the home:

1) Determine the total cubic feet of air in the living area in the residence. (Multiply square footage by ceiling height).

2) Divide the fans CFM (cubic foot of air movement per minute) into the total cubic feet of the home to determine the amount of time to perform one air exchange.

Every fans cfm is different, you decide as the consumer the number of air exchanges you prefer. Here at Tamarack, we recommend a minimum of 4 per hour.

How to size attic venting:

When you choose a fan, divide that fans cfm by 750. This number determines the amount of square footage of
net free air required to properly vent. To allow for any restrictions created by screening and louvers multiply that number by 2. This number is the minimum square footage of venting required for the fan to exhaust properly. One can choose a combination of ridge and gable venting to make up the square footage.
For Example:

A 1,200 square foot home with 8 foot ceilings has 9,600 cubic feet of air.

The Tamarack whole house fan model # HV1000 moves 1,150 CFM per minute.

Divide 1,150 into 9,600 = 8.30. This is the estimated time in minutes, to perform one air exchange. Divide 60 (the number of minutes in an hour) by 8.30 to determine the approximate number of air changes per hour the fan will provide. The answer is 7.23 so; the estimated number of air exchanges per hour is 7.

Fall is around the corner and the air is going to get cooler! Open those windows and have a whole house fan installed to move that air through.

Call us today for pricing of units and install. We also install traditional whole house fans. 513-421-2714