What is a High-Velocity HVAC System?

what is a high-velocity HVAC system - McQuillan Bros

What is a High-Velocity HVAC System?

Are you tired of your old HVAC unit not working? A high-velocity HVAC system may be just what you need for your St. Paul, MN home. Our HVAC professionals share everything you need to know about replacing your unit with a high-velocity HVAC system

How a High-Velocity System Works

In principle, a high-velocity HVAC system works in just the same way as the traditional HVAC systems. A compressor or heat pump located outside your Twin Peaks, MN home supplies the cool or heated air, which then moves through a system of ducts to every room in your home.

However, that is just about all there is for the similarities between high-velocity systems and the traditional HVAC systems. High-velocity air conditioning systems rely on smaller tubing to deliver conditioned air to all parts of a home. This tubing is flexible and is approximately 2-inches wide and has a vent that is 5-inches in diameter. In comparison, traditional ductwork is much wider and has vents. 

The high-velocity air handler pumps the cool or hot air under high pressure to the vents. Because of the high pressure at which the conditioned air travels, it can circulate a room a lot faster than the air from a traditional HVAC system. Ultimately, you can cool or heat your home much faster if you have a high-velocity HVAC system.

what is a high-velocity HVAC system - McQuillan Bros

High-Velocity HVAC Systems for New Construction and Retrofits

Air conditioning replacement MN professionals assert that high-velocity HVAC systems are not only ideal for new construction; they are also great for retrofitting into an existing home.

In new construction, it is very easy to integrate the high-velocity system into the home’s design. Similarly, the smaller and flexible tubing of high-velocity air conditioning makes these systems a breeze to retrofit into your existing home. Obstacles, such as studs in walls, can be worked around since the tubing can bend around those existing elements in the wall or floor. 
These attributes make installing high-velocity HVAC systems affordable, as your air conditioning St. Paul technician will tell you. 

The Advantages of a High-Velocity HVAC System

Easy installation. As already mentioned, a high-velocity system is easy to install since the small and flexible tubing can be maneuvered around obstacles. This ease of installation means less disruption of your home (no dismantling walls and ceilings, for example), and it is much cheaper to install than replacing the ducts and vents.

Better aesthetics. The smaller vents of high-velocity HVAC systems are less noticeable, and they can be tucked away out of sight. Many St. Paul homeowners prefer high-velocity HVAC systems for this reason.

Lower operating costs. Since the high-velocity heating and air conditioning typically warms or cools your Twin Peaks home a lot faster than other systems, it runs for a shorter amount of time. Our friends at Gilmore Heating and Air, an AC company in Placerville, agree that high-velocity systems use less energy and reduce your overall energy costs.

One unit is sufficient for a home. If you have been relying on multiple wall-mounted AC units to cool or heat your home, you will be pleased to learn that just one high-velocity unit can get the job done.

AC installation Roseville MN

Potential Drawbacks of High-Velocity HVAC Systems

Installation could be time-consuming. We mentioned that our St. Paul, MN HVAC technicians can install a high-velocity system without tearing down the drywall, but that also means that the installers would be working “blind” since they have no way of knowing what’s behind the walls. Unexpected obstacles can slow down the installation process, but luckily, the tubing flexibility means that no obstacle will be substantial enough to derail the installation process.

Some systems are noisier than others. If you don’t work with an experienced professional from McQuillan Bros when selecting a high-velocity air conditioning system, you could end up with a unit that emits a lot more noise than your old AC unit. We ensure that we select models with noise-attenuation features so that your home is as quiet as you want it while the AC is running.

As you can see, the benefits of high-velocity air conditioning systems greatly outweigh the drawbacks. However, since each home is different, it is best to talk to one of our experts at McQuillan Bros to assess your specific needs and recommend the best course of action. Contact us today to learn more about our high-velocity HVAC system for your home!

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Benefits of High-Velocity AC Systems

Benefits of High Velocity Systems - McQuillan Bros

5 Benefits of High-Velocity Air Conditioning

Many older homes in Minnesota don’t have ductwork or a functioning ac unit, which is why so many homeowners turn to high-velocity air conditioning systems. So, what exactly are high-velocity HVAC systems? In this article, you’ll learn what high-velocity AC systems are and their unique benefits for your Twin Peaks home.

What is a High-Velocity Air Conditioning System?

High-velocity air conditioners are special central AC systems that provide conditioned air in buildings with no traditional ductwork. The conditioned air in a high-velocity system is moved around the building through small, flexible tubes that are placed in the ceilings and walls of the building. High-velocity air conditioning systems are the perfect choice for those who want excellent air conditioning and minimal impact to the interior of your home.

What Are the Benefits of High-Velocity Air Conditioning?

Easy to Install

Unlike traditional ductwork, high-velocity air conditioning systems are easy to install. Our HVAC technicians at McQuillan Bros won’t need to tear up your floors or walls to install a high-velocity ac system. Typically, an air conditioning replacement in MN with a high-velocity system can take up to a day to install. 

Quieter Operation

If you have an older home, you’re probably familiar with how inconveniently loud window ac units are. Fortunately, high-velocity air conditioning systems are much quieter. Since tubes are so small and the air handler is well-insulated, you won’t notice a loud vibration from your system. If you can’t stand to bear the noise of your old ac unit running, contact McQuillan Bros for a free ac estimate. 


High-velocity systems are the most compact systems available today. We are able to install these systems just about anywhere. So, you’ll be able to better utilize your space as you please. You don’t have to worry about our St. Paul HVAC team gutting your home to install the system. If you have a vintage home or are going for a more minimalist look, a high-velocity ac system will be perfect for you.

Efficiency and Cost-Effectiveness

High-velocity ac systems are very popular in Minneapolis thanks to their efficiency and cost-effectiveness. Our friends at Gilmore Heating and Air, a residential ac company in Placerville, agree that the high-velocity ac systems are much more efficient than traditional units.
HVAC professionals at McQuillan Bros explain that the small tubes used with this system are sealed, which means there’s almost no chance of heat loss and air leakage, unlike in the larger ducts of other central air conditioning systems. 
Since the system is compact and pumps high velocity conditioned air, less energy is required to keep the air conditioner working. So, you’ll notice that your energy bills reduce after you call McQuillan Bros for your high-velocity ac replacement.  

Better Aesthetics

Let’s face it, appearance matters. High-velocity air conditioning systems are also known for being aesthetic and functional.
You won’t have to have any unnecessary scars or large air outlets in your walls. Similarly, the small tubes used safeguard historic buildings and designs of modern homes. Gone are the days when you had to put up with large, unsightly HVAC units!
As you can see, high-velocity air conditioning systems offer lots of advantages that other central air conditioning systems don’t. If you would like to learn more about what high-velocity AC systems can do for your Twin Peaks home, contact McQuillan Bros today. Our HVAC specialists are happy to provide you with a free ac estimate and answer any questions you may have.

Ductless AC for Older Homes

ductless ac for older homes

Easy Solutions for Summer Comfort

Historic mansions and charming Victorians grace the streets of Minneapolis and Saint Paul, adding to the region’s eclectic mix of architecture. Since many of the area’s older homes feature masterfully crafted details like hand-carved moldings, coffered ceilings and wainscoting, homeowners concerned with preservation are often reluctant to disrupt aesthetics with modern conveniences like central air conditioning. With McQuillan Bros’ help, now is the perfect time for residents to choose a practical alternative to obtrusive ductwork or window AC units.
Introducing ductless air conditioning from our premier HVAC company in Washington County. Ductless AC is a discreet, easily installed solution for cooling the Twin Cities’ most beautiful vintage homes.

High-Velocity, Small-Duct Cooling Systems

Many century-old houses were designed with high ceilings to improve air circulation and comfort during muggy summer months. These same high ceilings allowed traditional AC to be added later, but the installation of ductwork and dropped ceilings detracted from a building’s charm. Today’s high-velocity, small-duct AC systems enable owners and property managers to enhance a home’s comfort and productivity while preserving or restoring high ceilings. McQuillan Bros’ plumbing contractors in Minneapolis install ductless climate solutions that include high-performance, aesthetically pleasing innovations like these:

  • Compressors: Small enough to hide away in an attic or closet.
  • Outlets: Compact ceiling, wall or baseboard vents that don’t cheapen architectural appeal.
  • Duct tubes: Insulated flexible tubes that are threaded through wall studs or floor joists from the compressor to the outlets.

In non-ducted AC systems, a high-velocity air stream mixes with ambient air to create a comfortable, whole-house environment. Since heating features are also available, ductless systems are a smart solution for replacing noisy and inefficient radiators and boilers.

Mini-Split Heat Pumps

Mini-split heat pumps are another eco-friendly, practical option for adding AC to residences without ductwork. These green HVAC systems are a highly efficient solution for home additions when existing AC output is too small for the increased space.
Our HVAC company in Washington County installs stylish, low-profile mini-split interior units, but they may still look out of place in your historic home. Keep in mind that these systems consist of a large condenser and heat exchanger outside the house and connected with up to four indoor air-handling units, each equipped with a thermostat. Air handlers are generally mounted high on a wall and connected to a small conduit that transports coolant and electrical power from outdoor units. Mini-splits offer the ability to zone off unoccupied rooms, making them a cost-effective use of energy dollars. Multiple units can be installed to deliver whole-house indoor comfort.

Springtime Discounts on Ductless AC Installations

With the arrival of spring, hot and humid weather is looming. Get a jump on summer with high-velocity and ductless mini-split air conditioning installation by McQuillan Bros, expert plumbing contractors in Minneapolis since 1883. Save money on AC installation with these special offers and add the comfort of cool, dehumidified air without a major remodel of your vintage home. Call 651.237.5097 to learn more about innovative McQuillan Bros AC solutions. For your convenience, you can also request an estimate using our simple online form.