Due to their very nature, medical facilities have stringent requirements and even stricter standards when it comes to maintaining a safe, healthy, and comfortable environment. The Heating, Ventilation, and Air Conditioning (HVAC) system is crucial to achieving this goal, whether it be integrated or mobile medical HVAC rental San Diego suppliers offer.
Yet, despite its importance for the well-being of patients, staff, and equipment, HVAC often gets confused with another essential system: Air Handling Unit (AHU). Today, we’ll help you understand the distinction between AHU and HVAC, so you can make informed design, installation, and maintenance decisions that’ll lead to choosing an optimal solution.
What is the air handling unit in a hospital?
An Air Handling Unit (AHU) is an integral and critical component of the hospital’s HVAC system, whose primary function is to regulate and condition the air within the facility’s various spaces (zones), ensuring a safe, healthy, and comfortable environment for patients, staff, and visitors.
What are the main components of AHU?
Medical AHU is a quite complex device but, at the core of it, there are five primary components or sub-systems that ensure it can achieve its purpose. Here’s the breakdown of essential elements and their function, without getting too technical:
- High-efficiency filters (e.g. HEPA filters) remove airborne pathogens, bacteria, viruses, and other contaminants, thereby maintaining excellent indoor air quality.
- Coils (hot water, chilled water, or direct expansion) are responsible for creating and maintaining a comfortable environment by conditioning (i.e. heating or cooling) the air to desired temperatures.
- Humidifiers/Dehumidifiers prevent the proliferation of microorganisms (e.g. bacteria, viruses, etc.) by maintaining relative humidity (RH) levels in the 30% to 60% range, which is ideal for hospitals.
- Ventilation: Provides a controlled amount of fresh, outside air to dilute indoor pollutants, remove stale air, and maintain air exchange rates as per ASHRAE (American Society of Heating, Refrigerating, and Air-Conditioning Engineers) standards.
- A network of ducts & diffusers distributes the conditioned air to various hospital zones, based on the specific area requirement.
What is the AHU application?
In medical settings, AHUs are primarily used for three critical purposes:
- Infection Control: Medical AHUs are designed to prevent the spread of airborne infections, through features such as high-efficiency filtration, increased air exchange rates, and pressure differential controls (e.g., maintaining positive pressure in patient rooms and negative pressure in isolation rooms).
- Zone control: Allows for separate temperature and humidity control in different areas, such as patient rooms and administrative areas, and is especially important for laboratories and operating rooms which demand extremely precise temperature and humidity control.
- Redundancy & backup systems: Since AHUs are independent units, they can ensure continuous operation and maintain a safe environment, even in the event of a component or entire single-unit failure.
What is the difference between an air handling unit and an HVAC?
Although the terms are often used interchangeably, AHUs and HVACs are not exactly the same. The two systems differ in scope, scale, and functionality, and the best way to understand the differences is by doing a side-by-side comparison:
| AHU | HVAC | |
Scope | AHU is a single, self-contained unit, whose purpose is only to condition, filter, clean, and distribute air. | HVAC is a comprehensive system that encompasses all components, equipment, and infrastructure necessary to control the indoor environment, including AHUs. |
Scale | AHUs are typically smaller in scale, serving a single zone or a group of similar zones (e.g. a hospital wing). | HVAC systems can be massive by comparison, covering entire buildings, complexes, or even districts. |
Functionality | AHU focuses on air handling and conditioning for a specific area. | HVAC encompasses all aspects of heating, ventilation, and air conditioning for the entire building or facility. |
Who’s the #1 choice for mobile medical HVAC rental near me in San Diego?
Whether you’re looking at upcoming regular maintenance, need to supplement your existing HVAC capacity, or are faced with a sudden malfunction and need a quick yet reliable emergency solution, Aerco System is your prime choice.
Since 1978, we’ve been the preferred medical HVAC rental provider from Encanto to North City and throughout the San Diego area, owing to our unparalleled expertise and cutting-edge equipment, as well as 24/7 availability and rapid response in cases of emergency.
Reach out to us today and see firsthand why we remain the top choice for nearly half a century!