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DURABLE CRAWL SPACE FANS:
Easy to Install, OSHA-approved, and One for Every Need

1. Why do I need crawlspace ventilation?

The presence of moisture is what leads to mold, whch can be bad for your health and costly to remove. According to the Environmental Protection Agency, the way to control mold is to control moisture. The main source of crawl space moisture is ground evaporation, and ventilation allows this evaporation to dissipate. Proper ventilation not only exhausts moisture from the crawlspace but replaces it with fresh, drier air—providing effective moisture control. Ventilation also helps to remove strong odors and dangerous radon gas from the crawlspace.

2. How do I benefit from an Exhaust Fan?

Exhaust fans pull air out of the crawl space and removes radon, odors and moisture. Moisture causes mold, and mold is both costly to remove and dangerous to people, especially young children and individuals with breathing problems. Exhausting crawl space air removes the bad air and brings in fresh air from the outside environment. Bad or stagnant air in the crawlspace seeps into the home through cracks in the floor, which can cause health problems in asthmatics and children.

3. What different types of fans does Crawl Space Door Systems, Inc., offer?

Crawl Space Door Systems offers three types of fans. All meet OSHA standards and have OSHA-approved components, including an OHSA-approved grill around the fan blades. All have a corrosion-resistant frame and aluminum shutter.

PORTABLE FANS - These are used to direct air into hard-to-reach areas of the crawlspace to create an air jet stream and cross flow ventilation. Used for cross-ventilation, they increase the cross-flow of air.
SHUTTER FANS - Shutter fans are used to evacuate radon, odors and moisture from the crawlspace and pull in fresh air from the outside environment. The shutter fan is designed to be mounted in the crawlspace's foundation wall. The shutters open when the fan turns on and blows the shutters open. The shutters drop closed when the fan is turned off.
DOOR-MOUNTED SHUTTER FAN - This fan is used to evacuate radon, odors and moisture from the crawlspace and pull in fresh air from the outside environment. The shutter fan is mounted in the crawlspace door for easy installation without hindering access to the crawlspace.

4. What type of Fan Controllers does Crawl Space Door Systems, Inc., offer?

INSIDE HUMIDISTAT (Model HUC) - This device monitors humidity inside the crawlspace and turns the fan on when the humidity rises above a preset limit. This humidistat is placed in a crawlspace problem area and usually set at 50% humidity. Mold will not grow when the humidity is under 50%.
RAIN HUMIDISTAT (Model HUD) - This damp weather shut-off device monitors humidity of incoming air and turns the fan off when the outside air is damp, such as during a heavy rainfall. This humidistat is placed inside the crawlspace near an intake air vent and usually set at 80% humidity.
THERMOSTAT (Model TH) - The thermostat turns the fan off when the inside temperature drops below a certain preset temperature. The preset temperature is usually set around 40 deg F to prevent frozen pipes.

5. What type of Crawlspace Monitor does Crawl Space Door Systems, Inc., offer?

WEATHER STATION (Model WS) - This component monitors the temperature and humidity in the crawlspace. The crawlspace sensor is wireless. The monitor is portable (and can be located in a convenient location in the house), with an easy-to-read LED screen.

6. Why do I need Portable Fans?

Without cross-ventilation, air in unventilated corners or areas of a crawlspace becomes stagnant and foul. Portable crawlspace fans correct this problem by directing air flow into unventilated crawl space areas.

7. What is the function or purpose of the Portable Fan System?

The portable fan is connected to a 10" flex duct and the other end of the flex duct to an 8"x16" foundation air vent. Evacuating air from the crawlspace removes radon, odors and moisture from under the house.

8. What is the benefit of a crawlspace door fan?

A crawlspace door fan removes radon, odor and moisture from the crawlspace and pull in fresh air from the outside environment. The shutter fan is mounted in the crawlspace door for easy installation without hindering access to the crawlspace.

9. What is the benefit of a fan control system?

A fan control system has various components, including humidistats (instruments for measuring and controlling humidity) and a thermostat. The fan control system turns the fan or fans on and off. The fans can be controlled to come on when the crawlspace humidity reaches a certain preset amount. Similarly, they can be set to not come on if the humidity is higher outside the crawlspace than in the crawlspace, or when the temperature in the crawlspace is cold enough to freeze pipes.

10. How can I choose the right product for my home?

While various manufacturers' products have certain similarities and differences, sometimes you may feel like you're comparing apples and oranges. The best indicator to follow is to check the fan system which offers the CFMs (cubic feet per minute) of air displacement that you need and when you want the fans to turn on and off.

11. How does a homeowner benefit from buying a fan or fan system from Crawl Space Door Systems, Inc.?

The crawlspace fans and fan systems are relatively inexpensive to purchase and operate, easy to install and very durable.

12. How does a contractor benefit from buying a fan or fan system from Crawl Space Door Systems, Inc.?

The crawlspace fans and fan systems are not only relatively inexpensive to purchase and operate, they're also easy to install and very durable. Crawlspace moisture control is a large problem. A contractor or termite company can offer profitable services by using these products.

Published 10/4/2011 by William G. Sykes

William G. Sykes is an inventor, product designer, member of the International Code Council, engineer and patent attorney. He specializes in crawl space and foundation protection products for flood protection, ventilation and encapsulation (flood vents, air vents, doors and fans). Learn more about crawl space and foundation protection and how to save money on your flood insurance premiums by visiting our website =>

WWW.crawlspacedoors.com

Flood Vents
Engineered Certified
FEMA Compliant


Store Location:
Chris Qualtieri CFM, Operations Director

5741 Bayside Road #107
Virginia Beach, VA 23455
Ph: 757-274-9989
chris@crawlspacedoors.com
Hours: 8a.m. - 4p.m.

William G. Sykes
  • President
  • Patent Attorney
  • Product Designer
  • Electrical Engineer
  • Inventor
  • Member of the ICC
Crawl Space Door Systems, Inc. is a BBB Accredited Business. Click for the BBB Business Review of this Contractor - Crawl Space in Virginia Beach VA

Crawl Space Door Systems, Inc.
3700 Shore Dr #101
Virginia Beach, VA 23455
Ph: 800.230.9598
Ph: 757.363.0005
BY APPOINTMENT ONLY

info@crawlspacedoors.com

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