How a rooftop HVAC unit works?

What is a Rooftop HVAC Unit?

A packaged rooftop unit (RTU) is a classification of an HVAC system that is packed with all the components like the compressor, fans, and coils needed to distribute the conditioned air to a building or a specific area.

It is installed over the roof of the building as defined by its name. Its purpose is to provide cool air to commercial buildings as well as residential areas.

Rooftop HVAC units are distinct from the split system which carries the equipment separately but the rooftop unit has all the elements within its metal box.

RTU can serve cool/hot air or both within the building and can also raise the humidity level of the building.

How do rooftop heating and cooling units work?

Rooftop HVAC units function the same as other air conditioning systems do, providing desired air conditions to the consumer.

An AC circuit breaker is a shield lever for your home's electrical network. They are used to prevent electrical oversupply or short circuit to your house holds and suppress electrical destructions to your home.

Reasons Why My AC is Tripping Circuit Breaker?

When the Sun heats up to the patience mark, your air condition suffers to maintain the home's temperature. for that sometimes due to over passage of electricity through circuit will break down the circuit power.

  • Fresh air enters the rooftop unit through an air hood located at the side of the system. The air hood is like a mini-awnings with a small opening under it that permits only air to enter and prevents all sorts of contaminants from coming in.
  • The air enters the dampers where it gets mixed with return air and passes through the air filters to remove dirt or debris.
  • The filtered air then goes through the exchangers where it is heated or cooled depending on the operation mode.
  • Once the air is conditioned to the desired temperature the fan circulates the air to the building through ducts

How do rooftop heating and cooling units work?

Rooftop HVAC units function the same as other air conditioning systems do, providing desired air conditions to the consumer.

  • Fresh air enters the rooftop unit through an air hood located at the side of the system. The air hood is like a mini-awnings with a small opening under it that permits only air to enter and prevents all sorts of contaminants from coming in.
  • The air enters the dampers where it gets mixed with return air and passes through the air filters to remove dirt or debris.
  • The filtered air then goes through the exchangers where it is heated or cooled depending on the operation mode.
  • Once the air is conditioned to the desired temperature the fan circulates the air to the building through ducts.

Why install a rooftop HVAC unit?

There are many purposes for installing a rooftop HVAC unit. It is mostly favored by the commercial zones.

  • Space Savings

    The commercial buildings want to utilize every inch of their area to facilitate their customers. RTUs are the best option as they are placed on top of the building with all of their components and free up the space that can be used by the owner.

  • Secure

    HVAC units placed on the ground are highly threatened by theft or tampering. Rooftop units are much more secure from these kinds of risks.

  • Mute Operations

    All the components are placed outside the building so the working noise does not disturb anyone in the building as split systems do.

  • Easy Access

    The HVAC unit’s parts are assembled in one place so it is very easy for technicians to install or repair it.

  • Energy Efficient

    Rooftop HVAC units are highly energy efficient as all the elements are assembled in one place which needs less energy consumption under optimal conditions.

How RTU HVAC unit is different from other HVAC systems?

RTU HVAC systems are placed on the top, unlike other HVAC systems such as water-cooled chillers or split-system air conditioners that occupy indoor space.

A rooftop unit is different from other HVAC systems and incorporates all of its components needed for heating and cooling in a single panel that is why it is also termed a packaged unit. It uses ductwork to transmit the heated and cooled air to the different areas of building and is fitted with return openings to carry the air back into the system.

Advantages of Installing a Rooftop Unit:

  • Provides energy-efficient heating and cooling to the building.
  • Favorable because it consumes less space and less maintenance.
  • RTUs are great weather-resistant and can survive under extreme weather conditions.
  • As fixed on the rooftop, reduces the chances of being theft or tampered with.
  • Prohibits dirt, rain, insects, and snow from getting in.
  • RTUs are simpler to install.
  • Noiseless.
  • Durable.

Disadvantages of RTU HVAC System:

However, RTU provides several advantages, rooftop HVAC systems are not ideal for every business.

  • They are suitable for installations only if the roof is large enough and convenient to reach.
  • RTU HVAC systems function adequately only for buildings under ten floors.
  • Inappropriate installation can damage the roof layer due to the unit’s weight.
  • As the whole system is situated on the roof it raises the chance of bird infestation that can affect serious damage to the system.

Author

AJ Milbes

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