Negative air pressure

Negative air pressure refers to the sub-atmospheric pressure created within sealed duct cleaning systems using high-powered vacuums.

Negative air pressure refers to the sub-atmospheric pressure created within sealed duct cleaning systems using high-powered vacuums. Some important points about it:

• Prevents debris escape.

Then,it causes all air movement to flow inward toward the vacuum. Any dust, dander, pollen or other contaminants cannot escape from the sealed duct system. Especially with high suction levels around 1000-1500 Pascals, leakage and spillage are physically impossible.It is key to complete containment.

• Draws in additional debris.

Also,as air flows inward under negative pressure, even additional built-up debris that has not yet become airborne within ducts is drawn into the suction system to be captured and filtered or contained. More complete cleaning results from negative pressure.

• Microprocessor control.

Moreover,electronic controls precisely regulate suction power and shut off immediately if seal integrity is compromised to prevent excess suction that could damage components or cause debris escape. Careful monitoring helps ensure maximum suction for cleaning while avoiding issues.


• Section-by-section.

Negative air is applied section-by-section as ducts are divided and sealed into multiple sections during cleaning. Suction is only applied to sections that have already been sealed for complete containment within the section. Only after a section has been fully cleaned under negative pressure is the seal removed to move on to adjacent sections. This compartmentalized approach prevents cross-contamination.

• Highest capture efficiencies.

When combined with high-efficiency HEPA filters, the negative pressure created is able to capture over 99.97% of particles including dust, dander, pollen, pet dander, mold, bacteria, and microbes. Even the smallest airborne particles are drawn into and trapped by HEPA filters to generate extremely clean air during and after the cleaning process.

• Protect health & reduce sensitivities.

By thoroughly and hygienically cleaning ducts using negative air pressure and HEPA filtration, allergen levels can be reduced to help control respiratory issues and sensitivities. Strict containment also prevents re-exposure or spread of irritants. Excellent results can be seen for those with asthma, allergies, COPD and other issues.

• Peace of mind. Knowing ducts were cleaned using advanced negative air pressure for maximum debris capture and HEPA filtration provides complete peace of mind that the cleaning was done thoroughly yet responsibly without excess mess or risks of re-contamination. Homes are left in a fresh, clean state for improved air quality, health, comfort and indoor environment.

In summary, negative air pressure offers significant benefits for duct cleaning and indoor air quality. By creating sub-atmospheric pressure, negative air helps ensure maximum capture of debris while preventing any escape. Combined with high-efficiency HEPA filters, negative pressure helps produce the cleanest results possible with the highest peace of mind. 

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