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Exploring the Basics of Indoor Air Quality:
Dust - Respirable Particles
Dust and airborne particulates can be irritating to the upper respiratory system and will adversely affect individuals with existing allergies, asthma, and respiratory diseases. Long term exposure to dust and airborne particulate may also pose a risk for people who currently do not experience respiratory symptoms.
Recognize sources of pollution in your home
Air-borne pollutants are either biological (mould, dust mites, pollen, animal dander) or originate from other sources (gases or chemical particles released by furnishings, carpets, construction materials, unvented appliances, renovation activities including dust from lead paint, poorly-maintained heating systems, humidifiers and dehumidifiers).
It is Important to Consider the Effects of Different Size Particles on Your Health
- PARTICLES are usually measured in microns: (1 micron=1 millionth of a meter or 1/25,000th inch). The human body has defenses which can protect against particles larger than 10 microns, however particles smaller than 10 microns can enter breathing passages and penetrate deep into the lungs.
- PM10 - respirable particles having an aerodynamic diameter <= 10 microns. Particles < 5 microns can penetrate into the lower respiratory tract.
- PM2.5 -particles with an aerodynamic diameter <=2.5 microns. PM2.5 particles settle slowly (several hours to several days) - particles can cover hundreds of miles. Particles penetrate deep into lungs.
Types of particles include:
- Dust: Organic and Mineral
- Bioaerosols: Pollen, Mould, Bacteria, Dust Mite and Roach fecal matter and body parts, Animal Dander and Dried Urine.
- Smoke: Cooking, Tobacco, Welding
What you should know about House Dust
House Dust is a broad terms for an ever-changing and ever-present substance
House Dust is the result of the natural decomposition of the things we have in our homes along with dust that infiltrates from the outside. Wherever it comes from, it is a prime symptom of poor indoor Air Quality and causes a lot of symptoms for the allergic person.
What is in house dust?
The composition of house duct has changed over time and varies from house to house. Generally, you might find textile fibers, decomposing insect parts, pet dander, human and animal hair, food leftovers, pollen grains, mold spores, bacteria, skin flakes, insulation, sand, and the ever present dust mite and its fecal material.
What increases the amount of dust in a house?
Carpets, draperies, ruffled items, knickknacks, books, magazines, pets, upholstered furniture, animals and pillows, and fireplaces are some things that may increase dust levels. Infrequent cleaning or cleaning with a vacuum cleaner without a high efficiency filtering device, high traffic levels, location of the house, type of yard, and their condition of the central air system all contribute to the amount of dust in your home. For example, if you are in a new neighborhood where there is a lot of construction and the yards are not sodden with grass, you will have more dust in your home.
So How can I Protect My Indoor Air Quality?
The Solution to Healthy Indoor Air Quality is a multi-pronged approach.
Live Healthy this Winter with a Clean HVAC System
Ventilate to Reduce Concentrations of Indoor Air Contaminants:
HRV - Heat Recovery Ventilator;Reduces Concentrations of Indoor Air Pollutants, by Providing Fresh Air Exchange While Recovering up to 95% of the Heat Energy.
Lennox Air Exchangers
Vanee Ventilation Vanee Air Exchangers
Maintain high indoor air quality without excessive additional energy costs.
An HRV consists of two separate air-handling systems – one collects and exhausts stale indoor air; the other draws in fresh outdoor air and distributes it throughout the home.