Trusted Referrals & Accurate Information Regarding Duct Cleaning

The National Air Duct Cleaners Association recommends cleaning your air ducts every three to five years. The EPA doesn't suggest a specific timeline, but recommends doing so if you have substantial mold growth, a vermin infestation or excessive amounts of dust and debris in your system.

NADCA RECOMMENDS 

Frequency of cleaning depends on several factors, not the least of which is the preference of the homeowner. Some of the things that may lead a homeowner to consider more frequent cleaning include:

  • Smokers in the household
  • Pets that shed high amounts of hair and dander
  • Water contamination or damage to the home or HVAC system
  • Residents with allergies or asthma who might benefit from a reduction in the amount of indoor air pollutants in the home’s HVAC system
  • After home renovations or remodeling
  • Prior to occupancy of a new home.

EPA RECOMMENDS

You should consider having the air ducts in your home cleaned if:

There is substantial visible mold growth inside hard surface (e.g., sheet metal) ducts or on other components of your heating and cooling system. There are several important points to understand concerning mold detection in heating and cooling systems:

  • Many sections of your heating and cooling system may not be accessible for a visible inspection, so ask the service provider to show you any mold they say exists.
  • You should be aware that although a substance may look like mold, a positive determination of whether it is mold or not can be made only by an expert and may require laboratory analysis for final confirmation. For about $50, some microbiology laboratories can tell you whether a sample sent to them on a clear strip of sticky household tape is mold or simply a substance that resembles it.
  • If you have insulated air ducts and the insulation gets wet or moldy it cannot be effectively cleaned and should be removed and replaced.
  • If the conditions causing the mold growth in the first place are not corrected, mold growth will recur.

Ducts are infested with vermin, e.g. (rodents or insects).

Ducts are clogged with excessive amounts of dust and debris and/or particles are actually released into the home from your supply registers.

img_divider

Key Benefits of the Service

Indoor air quality is one concern that homeowners have when they decide to investigate air duct cleaning. Your heating and cooling system is the lungs of your home. The system takes air in and breathes air out.

Through normal occupation in a home, we generate a great deal of contaminants and air pollutants, such as dander, dust, and chemicals. These contaminants are pulled into the HVAC system and re-circulated 5 to 7 times per day, on average. Over time, this re-circulation causes a build-up of contaminants in the duct work.

  Energy savings
  Creates a cleaner living environment
  Reduces allergens and irritants
  Removes unpleasant smells and odors
  Improves air flow efficiency

You may consider having your air ducts cleaned simply because it seems logical that air ducts will get dirty over time and should occasionally be cleaned. While the debate about the value of periodic duct cleaning continues, no evidence suggests that such cleaning would be detrimental, provided that it is done properly.
Some occupants are more sensitive to these contaminants than others. Allergy and asthma sufferers, as well as young children and the elderly tend to be more susceptible to the types of poor indoor air quality that air duct cleaning can help address.
Here's my advice on duct cleaning: If you have a good reason to get it done -- mould, vermin and blockages, or a recent renovation, for example -- do it. If it's been a few years since it was last done, do it. But if you feel you need to do it regularly because you've heard about health benefits, don't. And always, always make sure the cleaner you hire is professional and thorough.

Key Drawbacks of the Service

A thorough duct cleaning removes dust and other particles from your system. Performed improperly, however, duct cleaning can do more harm than good.

If the vacuum pressure isn’t applied carefully, some of the dust that settled in the ducts will be loosened by the agitation and blown into the living space after the cleaning. (This explains the results of the Canadian study in which particle levels actually rose right after a cleaning.)

  Dust being woken up and not properly removed
  Damage to the seals inside the air ducts
  Flexible coil-style ducts being punctured
  Cleaning can damage the inside insulation
  Hiring an inexperienced business

Duct cleaning has never been shown to actually prevent health problems. Neither do studies conclusively demonstrate that particle (e.g., dust) levels in homes increase because of dirty air ducts. This is because much of the dirt in air ducts adheres to duct surfaces and does not necessarily enter the living space... Moreover, there is no evidence that a light amount of household dust or other particulate matter in air ducts poses any risk to your health.
The Canada Mortgage and Housing Corporation (CMHC) conducted a study in the 1990s to investigate two claims: that duct cleaning makes indoor air healthier and that it reduces energy costs by improving airflow. After testing 33 homes in Montreal before and after duct cleaning, the study found no significant improvement in air quality and that duct cleaning alone did not improve airflow or energy efficiency. In some cases, measured particle levels actually increased immediately after a cleaning. In other cases, particle levels decreased immediately after cleaning, but returned to previous levels within weeks.
When health problems are believed to be the result of biological contaminants or dust in indoor air, it is important to first determine that contaminated ducts are the cause of the health problems and verify that the ducts are, in fact, contaminated. The source of the problem may lie elsewhere, so cleaning ducts may not permanently solve the problem.
Next Suggestion : Important Things You Should Consider