Save Energy & Breathe Cleaner Indoor Air

Air washing is the use of high-pressure air that comes from your air compressor through an air hose to an air nozzle. This air nozzle delivers the streams of high pressure air, which dislodges the accumulated dirt and debris. The suction from the vacuum collection system and the high-pressure air from the air nozzle move the dirt and debris that has been dislodged from the ductwork into the vacuum collection system.

LEVEL 2. The next level of cleaning is achieved by using air whips: Air whips is a combination of air washing (high pressure air) with some agitation from the whips. This is a higher level of cleaning because, in addition to air washing, the whips make contact with some of the interior ductwork.  Again, the suction from the vacuum collection system and the high pressure air from the air nozzle move the dirt and debris that has been dislodged from the ductwork into the vacuum collection system.

LEVEL 3. The highest level of cleaning is achieved by power brushing and air washing because it does the best job of removing the accumulated dirt and debris in the ductwork: The brushing does the best job of dislodging the accumulated dirt and debris because it is making physical contact with more of the interior ductwork than the other methods. Air washing after brushing is necessary to help move the dirt and debris out of the ductwork to the vacuum collection system. 

Our Commercial HVAC System Cleaning and Commercial Air Duct Cleaning Services include:

• Complete and proper cleaning of the Air Handler Unit (AHU) to all National Air Duct Cleaners Association (NADCA) standards.

• Clean the interior of the air handler cabinet,

• Clean blower assemblies,

• Clean return and supply plenum,

• Clean the evaporator, heating, and condenser coils,

• Treat non porous interior surfaces of the system with bactericide and fungicides, and

• Clean the condensate pan. 

Air Duct Cleaning (Return and/or Supply) to all NADCA standards and EPA guidelines is accomplished with our DUCTVAC 3000 portable collection machines, rotary power or pneumatic brushes, and/or manual cleaning processes and/or high pressure air scrubbing devises.

Additional Services Available:

Resurfacing the interior of the AHU with an anti microbial resurfacing coating (IAQ 8000, Fosters or Porter Portercept). These resurfacing products are EPA registered for use in air conditioning systems. This will help prevent the future growth of fungus and bacteria as well as further degradation of the internal liner, or replacing the interior insulation with comparable fiber-glass insulation products if necessary.

Refurbishing the condensate pan with a high performance, corrosion proof product with high adhesion to metal and plastic surfaces.  Resists corrosion on aluminum, galvanized, copper and stainless steel.

• Stops pan leaks,

• Automatic pan leveling,

• Not effected by coil cleaners,

• Insures long life to new pans,

• Repairs old damaged pans, and

• Strengthens your pan.

 

Maybe this can help in your assessment of which systems needs cleaning it's the  National Air duct cleaning guidelines.

NADCA Standard ACR
Assessment, Cleaning, and Restoration of HVAC Systems  is an industry standard that has evolved from guidelines, standards, and research originating from the US National Air Duct Cleaners Association (NADCA) and other organisations dedicated to HVAC system hygiene, remediation and restoration.

This standard establishes criteria for:

• Evaluating the cleanliness of HVAC systems
  (ie. When to inspect and what to inspect?)
  • Recommended schedule for conducting HVAC system cleanliness inspections
  • Recommended list of HVAC system components to be inspected
  
  
• Cleaning and restoring HVAC systems to a hygienic state
  (ie. When to clean?)
  • Conditions that require the cleaning of the HVAC system
  
  
• Verifying that acceptable cleanliness levels have been achieved
  (ie. How clean is "clean"?)
  • Method 1 - Visual Inspection (Primary Method)
  • Method 2 - Surface Comparison Testing
  • Method 3 - NADCA Vacuum Test

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HVAC System Cleanliness Inspection
HVAC inspections must be a part of a building's overall Indoor Air Quality management programme. HVAC systems should be routinely inspected for cleanliness by qualified personnel in accordance with the following Schedule:

When to Inspect?

Building Use Classification	Air Handling Unit	Supply Ductwork	Return Ductwork/Exhaust
Industrial	1 year	1 year	1 year
Residential	1 year	2 years	2 years
Light Commercial (up to 10 tons/4,000 CFM )	1 year	2 years	2 years
Commercial (above 10 tons/4,000 CFM)	1 year	2 years	2 years
Healthcare	1 year	1 year	1 year
Marine	1 year	2 years	2 years

The HVAC system cleanliness inspection should include the following list of components:

What to Inspect?

Air Handling Units	Supply Ductwork	Return Ductwork
Air Filters Cooling Coils Condensate Pan Condensate Drain Lines Fan	Ductwork Dampers VAV Boxes	Ductwork Dampers Plenums

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Conditions Requiring Cleaning
When to Clean?
HVAC Systems should be cleaned when an HVAC cleanliness inspection indicates that:

• The HVAC system is contaminated with a significant accumulation of particulate or microbial growth
• The HVAC system performance is compromised due to contamination build-up

Source: National Air Duct Cleaners Association (NADCA)

Please feel free to contact our NADCA Certified Air System Cleaning Specialists if you are interested in having your HVAC System inspected or cleaned to improve Ventilation System Hygiene and Indoor Air Quality in your building or facility.