What is a High-Velocity System?

As the temperatures rise, homeowners across most of the country face the same dilemma: whether to turn on the noisy air conditioning and suffer the skyrocketing energy bills or sit through a sticky, uncomfortable summer. There doesn’t seem to be much of a compromise, given that conventional forced-air systems dominate the heating, ventilating, and air conditioning (HVAC) landscape in the United States; and for owners of historic, architecturally sensitive, or aesthetically challenging houses, these systems may not even be a viable option due to lack of space or the need for extensive renovation. Even window units—though they offer some reprieve—aren’t necessarily any more ideal: They block views, use energy inefficiently, generate unbearable noise, and can pose security risks if stationed in unlocked windows.

                However, there is an alternative! High-velocity or “small-duct” HVAC systems comprise flexible mini ducts that can be easily routed through existing space within walls, floors, and ceilings. Moreover, the uniquely small size of their parts plays a role in ensuring operational efficiency and lower monthly bills—but that’s just the tip of the iceberg of what the system’s smart design can offer.

                High-velocity systems work similarly to older HVAC systems, hot or cool air comes from a heating or cooling source. That’s usually a heat pump or compressor outside the home, then it travels through the house and enters the rooms through vents. For a high-velocity systems instead of the metal duct work uses small 2” flex duct tubing and small 5” round vents.

The hot or cool air then moves from the compressor or heat pump to a high-velocity air handler, this pushes the air through your home with more pressure than duct-and-vent HVAC systems. Because of this, the air circulates very quickly through the area it’s treating once it comes through the vents. This means the room gets to the temperature you want faster than with other systems. This makes for better climate control.  It also saves you money! Since it works quickly, the system doesn’t need to stay on as long, therefore, it uses fewer resources, or energy, to run and less the less energy it uses, the less you’re charged on your energy bills.

                Another great savings factor is the professional installation of a high-velocity HVAC system is so quick and simple that homeowners can start reaping its benefits almost immediately. Whereas the bulky ducts in most conventional cooling and heating systems require a fair amount of renovation—from the opening of drywall to the construction of soffits and drop ceilings—to incorporate them, a high-velocity system has the upper hand because of the compact size of its components. The flexible ducts can snake between beams and joists throughout existing cavities in ceilings, walls, or floors, while the modular air handlers and coils fit in any opening that’s just a couple of feet tall and wide in, for example, an attic or crawl space.

                If you are looking for a permanent heating and cooling solution in your home that doesn’t require tearing out walls, a high-velocity system might be the right choice for you.