Central air condition induction systems have now gone out of style. They used to be the typical choice for huge buildings constructed till the 1980s. Back then, they were famous because they were more energy-efficient than fan-based units, and also because they needed lesser ductwork in them. This made central air condition induction system users easily operate and upkeep them for many decades.
Having been around for over 40 years, they are starting to decline in use. This is part of the constant evolution Heating Cooling and Air Conditioning (HVAC) technology is undergoing to improve energy efficiency as well as the quality of life. With the availability of more energy-efficient HVAC systems, building owners now have to make the difficult choice of whether to replace the outdated central air condition induction system with newer units or to entirely overhaul the HVAC system of their building. This post aims to help you decide just that.
What is Central Air Condition Induction?
As the name suggests, a large central air handler is the main part of the central air condition induction system. It divides air into two categories: primary air and secondary air. The primary air is delivered to terminal units, which are smaller in size than the central ones.
However, that’s not the main characteristic that sets induction units apart from others; it is, in fact, the use of nozzles instead of fans in the smaller terminals that does that. A set of nozzles delivers the primary air in the form of the Venturi Effect, i.e., a vacuum that collects secondary air from the room. Before it is delivered back to the room, the secondary air mixes up with the primary air. A coil is used to regulate the air temperature, which is usually a water coil. While induction units are designed to heat as well, they perform their best when they are made to cool only.
There are several reasons why you must replace central air condition induction systems. Since the velocity of the air that gets delivered through them is high, terminal units are quite noisy. There are buildings that have developed moisture problems due to them, while others have had static air issues. Facility managers are also pushed to consider alternative options due to these units now requiring maintenance.
For starters, you could go for an entirely different type of systems, such as a fan and coil one. However, that would push you to install new ducts! This gets even more challenging if the building is older than the time when HVAC systems became common, or if the induction unit was included in the original design of the building. That makes it even harder to find the required space for the new ducts.
So, you could opt for a ductless split system that uses one large outdoor unit and multiple smaller indoor units. What makes it attractive to building occupants is that it is quite similar in function and design to the original induction system. It is also very energy efficient. However, on the downside, it doesn’t exchange any air with the split system, meaning there is practically no ventilation! You would be pushed to arrange that manually.
Therefore, you could consider getting a new induction system to replace your old one. A lot of facility managers nowadays are doing this. The technology has evolved over the years, and an upgrade may raise your energy efficiency bar by over 30%. People have many reasons to stick to induction systems; one of them is that you can upgrade its one terminal at a time instead of replacing it altogether at once. This makes it a common choice for buildings like hospitals, which have high usage and cannot afford to have disconnected systems even for replacements as they cater to critical patients.
You could also replace them with a chilled beam system that comprises a fin-and-tube heat exchanger, mostly suspended from the ceiling. There are two types of these systems: active and passive. Active chilled beam systems are similar in function to the original induction systems, with primary air being delivered from a central air handler.
All in all, your client could select any type of HVAC system, and they would still be happy. Each has its own benefits.
If you have decided to replace your central air condition induction system, call MD Heat Air today to find the best “Heating and Air Conditioning Company Near Me”!