healthy house institute

4 Free HHI Books:

Creating a Healthy Household, The Healthy House Answer Book, Healthy Home Building, The Healthy House 4th Edition
Your email will only be used as described in our Privacy Policy

Follow us on Twitter



Proud Supporter of:




Healthy Home Basics - Ventilate Your Home

By HHI Staff

No doubt about it, we all want houses that are energy efficient, affordable, comfortable, and healthy. Yet, many houses feel stuffy due to lingering odors and too much humidity; condensation on windows leads to mold growth and decay; and many of us suffer health effects due to polluted indoor air. All these issues interact in a variety of ways, and ventilation is a major piece of the puzzle.


article continues below ↓

We do not strictly control Google ad content. If you believe any Google ad is inappropriate, please email us directly here.

There are two primary reasons for ventilating houses: 1) to provide the necessary fresh air for the occupants to breathe, and 2) to dilute indoor air pollutants and excess moisture. Complaints of stuffiness, unpleasant odors, and illness are common in houses that contain too little fresh air. Outdoor air pollution is bad enough, but we are now learning that indoor air pollution is almost always considerably worse—and this polluted air can make us sick.


To feel comfortable and healthy, people simply need clean air. While breathing is something few of us consciously think about, each of us breathes every minute of every hour of every day of every year of our lives. We breathe primarily to take the oxygen into our bodies that we need to survive, but we also exhale moisture, carbon dioxide (CO2) and a variety of other by-products of metabolism. We take air in, we use it, then we expel it, and even though we do this unconsciously most of the time, our bodies are specially designed to provide this service to us continuously.


But, don’t houses breathe also? Yes, but in many cases they don’t do it very well. A ventilation system should be as reliable and predictable as our own lungs. Houses without ventilation systems get their air quite by chance—the air moving into and out of them is totally uncontrolled. For example, air may infiltrate indoors only when the wind is blowing. We deserve to have control over the air we breathe, we deserve more than “ventilation-by-chance,” we deserve “ventilation-on-purpose.”


When air enters a leaky house through the cracks, it may contain radon or other pollutants, and thus, not be very clean or healthy. We deserve a ventilation system designed to bring in clean air. We deserve a system as efficient as our lungs. Our automobiles typically have better ventilation systems than our houses. Even though some houses get enough fresh air by chance some of the time, research is showing us that most newer houses simply don’t have enough fresh air on a regular basis.


What about the fact that most houses have never had ventilation systems? Why do we need them now? Part of the answer lies in the fact that we expect more out of our houses than our grandparents did. We aren’t willing to accept drafty, uncomfortable, unhealthy, energy-wasting houses. At the same time, considering all of the various synthetic materials and cleaning products we bring indoors, our houses have more and different sources of indoor pollution today. We spend more of our time indoors than our parents or grandparents did, and we generate more indoor moisture with steaming-hot showers, washing machines, dishwashers, and hot tubs. Today’s houses are also more energy-efficient, are more tightly constructed, and have smaller furnaces—all of which lead to less “natural” ventilation.


Why not just build looser houses? People really don’t want to live in loose houses—they are drafty, uncomfortable, and consume too much energy. We can’t afford to waste energy heating and cooling our houses any more than we can continue to waste it in gas-guzzling automobiles. And, just because a house is loosely constructed doesn’t mean the occupants are getting enough fresh air—loose houses can be unhealthy, too.


What about air filters? Filters are one of several ways of improving the air quality in houses. But filters can’t supply us with oxygen and they can’t remove moisture from the air. So, if you use an air filter in your house, you still need ventilation—although you might not need quite as much. As it turns out, all the different strategies for reducing air pollution should be used in addition to ventilation, not instead of it.


HHI Error Correction Policy

HHI is committed to accuracy of content and correcting information that is incomplete or inaccurate. With our broad scope of coverage of healthful indoor environments, and desire to rapidly publish info to benefit the community, mistakes are inevitable. HHI has established an error correction policy to welcome corrections or enhancements to our information. Please help us improve the quality of our content by contacting with corrections or suggestions for improvement. Each contact will receive a respectful reply.

The Healthy House Institute (HHI), a for-profit educational LLC, provides the information on as a free service to the public. The intent is to disseminate accurate, verified and science-based information on creating healthy home environments.


While an effort is made to ensure the quality of the content and credibility of sources listed on this site, HHI provides no warranty - expressed or implied - and assumes no legal liability for the accuracy, completeness, or usefulness of any information, product or process disclosed on or in conjunction with the site. The views and opinions of the authors or originators expressed herein do not necessarily state or reflect those of HHI: its principals, executives, Board members, advisors or affiliates.

Healthy Home Basics - Ventilate Your Home:  Created on February 28th, 2008.  Last Modified on May 19th, 2011


We do not strictly control Google ad content. If you believe any Google ad is inappropriate, please email us directly here.



Information provided by The Healthy House Institute is designed to support, not to replace the relationship between patient/physician or other qualified healthcare provider.

Education Partners



Popular Topics: Air Cleaners & Air Purifiers | Allergies & Asthma | Energy Efficiency & Energy Savings | Healthy Homes | Green Building
Green Cleaning | Green Homes | Green Living | Green Remodeling | Indoor Air Quality | Water Filters | Water Quality

© 2006-2018 The Healthy House Institute, LLC.


About The Healthy House Institute | Contact HHI | HHI News & Media | Linking Resources | Advertising Info | Privacy Policy | Legal Disclaimer


HHI Info