Air Duct Cleaning Denison Iowa
Air Duct Cleaning Denison Iowa is done by Swick’s Duct Cleaning.
Ducts are conduits or passages used in heating, ventilation, and air conditioning (HVAC) to deliver and remove air. The needed airflows include, for example, supply air, return air, and exhaust air. Ducts commonly also deliver ventilation air as part of the supply air. As such, air ducts are one method of ensuring acceptable indoor air quality as well as thermal comfort.
The position of the U.S. Environmental Protection Agency (EPA) is that “If no one in your household suffers from allergies or unexplained symptoms or illnesses and if, after a visual inspection of the inside of the ducts, you see no indication that your air ducts are contaminated with large deposits of dust or mold (no musty odor or visible mold growth), having your air ducts cleaned is probably unnecessary. A thorough duct cleaning done by a professional duct cleaner will remove dust, cobwebs, debris, pet hair, rodent hair and droppings, paper clips, calcium deposits, children’s toys, and whatever else might collect inside. Ideally, the interior surface will be shiny and bright after cleaning. Insulated fiberglass duct liner and duct board can be cleaned with special non-metallic bristles. Fabric ducting can be washed or vacuumed using typical household appliances.
Duct cleaning may be personally justifiable for that very reason: occupants may not want to have their house air circulated through a duct passage that is not as clean as the rest of the house. However, duct cleaning will not usually change the quality of the breathing air, nor will it significantly affect airflows or heating costs.
Air Duct Cleaning Sioux City Iowa by Swick’s Duct Cleaning
Signs & Indicators that air duct cleaning Sioux City Iowa is needed:
- Sweeping and dusting the furniture needs to be done more than usual.
- After cleaning, there is still left over visible dust floating around the house.
- After or during sleep, occupants experience headaches, nasal congestion, or other sinus problems.
- Rooms in the house have little or no air flow coming from the vents.
- Occupants are constantly getting sick or are experiencing more allergies than usual.
- There is a musty or stale odor when turning on the furnace or air conditioner.
- Occupants are experiencing signs of sickness, e.g. fatigue, headache, sneezing, stuffy or running nose, irritability, nausea, dry or burning sensation in eyes, nose and throat.
In commercial settings, regular inspection of ductwork is recommended by several standards. One standard recommends inspecting supply ducts every 1–2 years, return ducts every 1–2 years, and air handling unit annually. Another recommends visual inspection of internally lined ducts annually. Duct cleaning should be based on the results of those inspections.
Inspections are typically visual, looking for water damage or biological growth. When visual inspection needs to be validated numerically, a vacuum test (VT) or deposit thickness test (DTT) can be performed. A duct with less than 0.75 mg/100m2 is considered to be clean, per the NADCA standard. A Hong Kong standard lists surface deposit limits of 1g/m2 for supply and return ducts and 6g/m2 for exhaust ducts, or a maximum deposit thickness of 60 µm in supply and return ducts, and 180 µm for exhaust ducts. In the UK, CIBSE standard TM26 recommends duct cleaning if measured bacterial content is more than 29 colony forming units (CFU) per 10 cm2; contamination is classified as “low” below 10 CFU/cm2, “medium” at up to 20 CFU/cm2, and “high” when measured above 20 CFU/cm2.