Indoor Air Quality
An HVAC system that is well-designed and maintained properly can improve indoor air quality and provide comfort for its occupants. HVAC systems can cause air quality problems if they are not properly designed or maintained.
- There are many ways that an HVAC system can affect indoor air quality:
- Spreading bacteria, dust, allergens, or other harmful substances.
- Excessive heating or cooling of the air. It can cause thermal discomfort if the air is blown at high speeds.
- Inadequate humidity can cause discomfort and even health problems. Mold growth can also be caused by moisture.
This article will give you an overview of signs that your HVAC system may be causing indoor quality problems.
1) Air-conditioned Spaces Feel Too Humid Like a Refrigerator
Two main functions of air conditioning systems are cooling the air and maintaining a comfortable humidity level. Many AC systems can only be controlled by temperature. If the unit is too large, it is possible to reach the desired temperature quickly but not enough time to remove humidity. Low temperatures and high humidity can make it uncomfortable for the occupants. This may lead to decreased productivity in commercial buildings and even health problems.
2) Air Temperature Variations can be Extreme
This is another reason for discomfort. It affects heating and air conditioning systems as well, particularly if they are large. Although it is best to avoid drastic temperature shifts, this can happen if cooling or heating equipment is specified in excess.
In some cases, oversized cooling and heating equipment may save energy by being used for shorter periods of time. Oversizing can lead to high temperatures, poor humidity control, and drafty indoor environments. These effects can have a negative impact on comfort and health. They could also reduce productivity in office buildings.
3) Air is being blown at excessively high speeds
Temperature is only one factor that affects thermal sensation. Humidity and airspeed are also important. Air moving at too high a speed can cause discomfort as well as extreme cold. Excessive pressure in the air ducts or oversized fans can cause drafty indoor environments.
Variable frequency drivers (VFDs), electronic devices that reduce the speed of motor-driven devices and fans when they are not in use, can be used to increase their output. VFDs can be used in ventilation systems to control airflow and make significant savings. Excessive air pressure and speed are wasteful of energy.
4) Unpleasant Odors in Air Ducts
The heating and cooling system’s ventilation systems play a crucial role. However, it can also lead to air quality problems in certain circumstances. There are three possible causes for unpleasant odors coming from your ventilation system:
The ducts can emit unpleasant odors. This could be due to many reasons. Mold growth can be caused by moisture accumulation in an air-handling unit. If ducts aren’t properly sealed, it is possible for small animals to have entered the ducts and died.
The HVAC system is causing odors. This could be due to leaky ducts or poor connections between HVAC equipment and ducts.
Other areas may produce odors. This is a sign that the ventilation system is not providing fresh air efficiently. It could be due to a poor balance of injection and extraction fans or obstructed conduits. To maintain a higher airflow in a room, it is best to inject slightly more air than is extracted. This will keep contaminants out and prevent odors from coming in. If the extracted air is greater than the air being injected, there is a negative pressure that draws unwanted air into the room.
No matter what the situation, bad odors can indicate that HVAC equipment needs to be inspected, particularly the ventilation equipment.
5) Health Issues Are Common Among Occupants
Sick Building Syndrome (SBS), is a term that describes a situation in which building occupants have health problems directly proportional to their indoor time. SBS is not a specific disease, but rather poor health conditions among the occupants.
SBS can be affected by many conditions, including humidity, bacteria, inadequate temperature, and the presence of harmful substances. Poor HVAC operation is a common factor.
Call J.C.’s Heating and Air today to improve indoor air quality in your home! Dial (865) 388-1712 to get started.
J.C.’s Heating and Air
3709 N Broadway
Knoxville, TN 37917