Fresh Air Ventilation Systems

Indoor Air Quality Issues

Today's high tech building solutions require a whole house system approach. With a huge emphasis on building it "Green" and highly energy efficient, ventilation has become a necessity!
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This is what we are building.

Mom always warned us not to put a plastic bag over our heads... Why? We could die!! 

Well, let's see what happens.

First thing that accumulates is moisture. You will immediately see it start to form in the bag. We exhaust moisture into the air when we breath and also when we cook, wash, clean, water our plants, pets, and some comes in through the foundation.

But, the immediate danger is not the moisture. It's the build up of the unseen gases. This is the greatest danger.

Let's compare......

Bag over Head       vs.       Tightly sealed Home

Moisture forms in the bag on the inside surface.

Moisture may form on cold surfaces. Windows, exterior wall cold spots either inside the wall cavity or behind furnature where there is little heat flow.
Result: mold will grow and start to eat at structure and produce spores which affect health.

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Oxygen is depleted and replaced by CO2 and other exhaust gases.

Gases build up from many different sources including; radon, formaldehyde, nitrogen dioxide, carbon monoxide, biological pollutants, pesticides, second hand smoke, etc...

Immediate effects may show up after a single exposure or repeated exposures. These include irritation of the eyes, nose, and throat, headaches, dizziness, and fatigue. Certain immediate effects are similar to those from colds or other viral diseases, so it is often difficult to determine if the symptoms are a result of exposure to indoor air pollution.

Other health effects may show up years after exposure has occurred or only after long or repeated periods of exposure. These effects, which include some respiratory diseases, heart disease, and cancer, can be severely debilitating or fatal.

Particle accumulation, unless you have dandruff, is not a big concern since it's just your head in the bag.

Sources include pets, dust, dust mites, mold spores,  combustion devices, etc..

Health Effects: Eye, nose, and throat irritation; asthma, respiratory infections and bronchitis; lung cancer.

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Mold Spores magnified
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Dust mite magnified major cause of asthma

So, what are the things that we need to consider......

Depressurization
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Exhaust devices remove air i.e. dryer, bath fans, rangehood, furnace, fireplace, woodstove

Air out has to be matched by air in. So, where does it come back in?

If your new home is really tight and air can only come back in at a few locations, say maybe your patio slider, basement, or garage entrance. Is your whole home getting properly ventilated?
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If you decide to go with an "Exhaust Only" approach to meet codes you not only have this problem but you also get no heat recovery.

Balanced Ventilation
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Balanced Heat Recovery offers you a cost effective way to make sure your whole house is getting the Fresh Clean air that you need to breathe and get the heat recovery up to 95% efficiency that will keep your new home energy efficient!
Fresh Air Ventilation Systems, LLC * 155 Spring St. Lewiston, ME 04240 * USA * Phone: (207) 786-9400
Venmar, venmar ventilation, venmar hrv, erv air exchange systems air exchangers. Residential ventilation. heat recovery ventilators, energy recovery ventilators, air to air heat exchangers, air purifiers, air cleaners, indoor air ventilation, air exchanger hrv and erv wet windows moisture on windows mold humidityThe information below is so that this page can easily be found by Google. Venmar's corporate site. Venmar Constructo 2.0 specification sheet. VENMAR AVS ERV CONSTRUCTO 2.0 QUATTRO Part #45115 REPAIRS AND MAINTENANCE Venmar AVS ERV Constructo Quattro modular design makes it possible to remove all mechanical parts in less than 5 minutes. (to help the service companies quickly remove the guts and sell you and entire fan assembly rather than enable them to fix the motor. The motor is not easily removable from the fan assembly.) The low power consumption PSC motor is permanently lubricated (when the lubricant fails, it simply seizes up. Low power in this context just means small, not efficient - PCS motors are wasteful). Even better, the entire motor sub-assembly can be removed in less than a minute for easier maintenance. (this is true). WARRANTY The Venmar AVS ERV Constructo Quattro is protected by a 2-year warranty on parts only. (fans only last two years which is why we only give two years). The energy recovery core is covered by a 5-year warranty. Venmar Ventilation Inc. Recalls Heat Recovery Ventilators Due to Fire Hazard WASHINGTON, D.C. - The U.S. Consumer Product Safety Commission, in cooperation with the firm named below, today announced a voluntary recall of the following consumer product. Consumers should stop using recalled products immediately unless otherwise instructed. It is illegal to resell or attempt to resell a recalled consumer product. Name of product: Heat Recovery Ventilators Units: About 75,000 Manufacturer: Venmar Ventilation Inc., of Quebec, Canada Hazard: The motors in these units can overheat, posing a fire hazard. Incidents/Injuries: Venmar Ventilation has received four reports of ventilator motors overheating resulting in fires causing extensive property damage. One incident in Michigan reportedly resulted in about $1 million in damages. Description: Heat Recovery Ventilators are designed to exchange air between the inside and outside of a home in order to provide fresh air. The recall covers units made from 1991 through 2001, and have the following brand names and model numbers: Brand Models Venmar AEXX, EARC, 1XX, 30X, 40X, 40XXX Venmar AVS 1.X, 2.X, 30XX, 55XX Flair 30, 30XX, 55, 55XX, 85115 v�nEE 10, 1XX, 100X, 20, 20XX, 30XX, 90 Conformax 300, 350, 400 NuTone NUTR130 Carrier Bryant VXXXXXXXXX, ERVXXXXXXX or HRVXXXXXXX Payne Day & Night VXXXXXXXXX Heil HEILXXXXX York 5263554XXXX Sears Brand OPTIMUM Guardian by Broan 100X, 200X Rheem Ruud Protech Weatherking � 84-ERV100, 84-ERV200, 84-HRV100, 84-HRV200 The model numbers are written on a silver or black label on the outside of panel. The "X" digit used in the model numbers can be either a letter or a number. Sold by: Heating, plumbing and building supply distributors nationwide from January 1991 through December 2001 for between $700 and $2,500. Manufactured in: Canada Remedy: Consumers should immediately turn off and unplug their ventilators, and contact Venmar to receive instructions on how to participate in the recall. Venmar will provide a free safety device that will shut off the ventilator if the motor overheats. Consumer Contact: For more information, contact Venmar Ventilation toll-free at (866) 441-4645 between 9 a.m. and 5 p.m. CT Monday through Friday, or visit the firm's Web site at www.venmar.ca

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