Commercial Air Duct Cleaning
“Air duct cleaning” implies only the air ducts will be cleaned, when in fact it refers to the cleaning of the entire heating, ventilating, and air conditioning (HVAC) system. All components of the air duct and HVAC system must be cleaned in order to obtain the most effective results and prevent recontamination of the system.
Commercial air ducts, air handlers, supply, return and exhaust cleaning is essential for maintaining optimum system performance, save money on energy use and provide best possible indoor air quality for a healthier environment.
Bacteria, dust, mold, pollen and other hazardous materials accumulate in a building’s HVAC and air duct system throughout everyday use. Costly issues can occur if dirty air duct systems and HVAC units are ignored. The continuous re-circulation of these contaminants cause buildup resulting in component failures and poor indoor air quality for the occupants.
We are frequently asked how we eliminate the spread of contaminants while the air duct and HVAC system is cleaned. The air duct and HVAC system is placed under continuous negative pressure via vacuum and inflatable air duct zoning bag systems to prevent the spread of contaminants during the cleaning process. This negative pressure serves to extract, collect and remove the contaminants. The continuous negative pressure allows very fine particles to be removed as they become airborne.
The commonly followed process for cleaning the air duct and HVAC system project is:
- Discuss expectations and determine results
- Provide blue prints if readily available or an on-site evaluation can be conducted
- Discuss the dates and times the work can be performed
- Discuss site preparation to safeguard the indoor space
- Discuss cleaning products and review material safety sheets
- Communicate the project to the facility team and occupants
- Discuss cleaning equipment and the cleaning process techniques
- Address all safety and environmental concerns
HVAC Cleanliness Assessment Schedule
|Building Use||Air Handling Unit||Supply Air Ducts||Return and Exhaust Air Ducts|
|Industrial||1 Year||1 Year||1 Year|
|Residential||1 Year||2 Years||2 Years|
|Light Commercial||1 Year||2 Years||2 Years|
|Commercial||1 Year||2 Years||2 Years|
|Healthcare||1 Year||1 Year||1 Year|
|Marine||1 Year||2 Years||2 Years|
Commercial Dryer Vent Cleaning
The dryers key function is to eliminate moisture recovered during the heating of damp clothing. This humidity is expelled outdoors through the dryer vent ductwork and cap. Lint and debris will buildup over time and cause blockage within the components preventing proper ventilation and a fire hazard.
Commercial dryer vent cleaning is essential in prevent clothing dryer fires.
Dryer vent fires are responsible for significant damage, injuries and loss of life each year according to the Consumer Product Safety Commission.
The U.S. Fire Administration Clothes Dryers Fires August 2012 report found failure to clean (34 percent) was the leading factor contributing to the ignition of clothes dryer fires.
The majority of commercial dryer vent fires occur as a result of highly flammable lint getting caught in the clothing dryer ductwork and becoming heated to the point of ignition. Lint traps and filters catch a large percentage of the lint and debris. The rest of the lint and debris sticks in the ductwork and piping. It builds up over time and creates the situation for a dryer vent fire.
Gas clothing dryers can force carbon monoxide back into the facility if the dryer vent exhaust is inadequately vented or is blocked by lint or debris. This creates a dangerous condition for carbon monoxide poisoning and exhaust fires.
Reduce fire hazards, save money by reducing operation costs and energy and dry clothing more quickly and evenly by keeping your dryer ductwork clean.
Commercial Coil Cleaning
HVAC condenser and evaporator coil cleaning is a quick and cost-effective maintenance task to increase your buildings energy efficiency.
Dirty condenser and evaporator coils can significantly increase HVAC energy usage and associated utility costs while decreasing component life according to the U.S. Department of Energy and Environmental Protection Agency.
The U.S. Department of Energy states, “a dirty condenser coil can increase compressor energy consumption by 30 percent” because it requires compressors to run longer, increasing energy usage and decreasing component longevity.
Decreased airflow occurs when an evaporator coil is full of contaminants such as dirt, dust, mold spores, moisture and pollen causing reduced heat transfer and dehumidification processing. This can cause poor air quality and excessive work on the motors leading to system failures.
Foreign materials on the condenser and evaporator become unintentional insulators blocking the free flow of air through the coils and decreasing the rate of heat transfer between the coil and air.
High efficiency HVAC system benefits from regular coil inspection and cleaning. The high efficiency system operates at higher pressures and are less tolerant to increased static pressure. The high efficiency HVAC system require more capable heat transfer across larger coils to run at its optimal capacity.
Units with high Seasonal Energy Efficiency Rating generally have variable speed fan motors adjusted on demand. The effectiveness of the system is compromised when they need to run faster due to poor coil air flow.
Cleaning the HVAC condenser and evaporator coils saves money, maintains peak operating efficiency, improves indoor air quality and improves the reliability and service life of the heating and cooling system.
Commercial Cooling Tower Cleaning
Mineral scale buildup in cooling towers, chillers and system piping is a common challenge for many industrial water systems. A clean cooling tower supplies cooled water to enable the chiller, coils and other HVAC system components to efficiently cool air.
Cooling towers move air through the water system with a fan, allowing water vapor to sit within the system. According to the Occupational Safety and Health Administration, the water vapor can stay within the ideal temperature range for Legionnaires’ disease bacteria to grow. The cooling tower water becomes dirty with slime, algae and sludge building up on the basin floor perfect for Legionella bacteria to grow. Dirty water can affect chiller operating efficiency and increase energy costs. You should have the tower cleaned and disinfected whenever scale, slime or sediment is present.
Our tower vacuums remove slime, mud, algae, bacteria and other contaminants from the sides and floor of the cooling tower basin. A foaming detergent is used on the tower to dissolve tough deposits. And adding our biocide product Tower Treat “S” cooling tower treatment after cleaning the basin prevents bacterial growth.
Chillers generally use the most energy and regular cleaning and maintenance ensures they operate reliably and efficiently. Chiller performance is related to its heat transfer efficiency and there are miles of tubing in a chiller’s heat exchangers. Keeping the tubes clean means the chiller will perform more efficiently.
Tubes can become covered with slime, algae and scale. When tubes become packed solid with deposits, a water flush with a tube cleaner cleans clogged tubes quickly. We use a rotary tube cleaning machines to clean tough scale, biological and other buildup in chiller tubes.