If you’ve been shopping for a new heating and cooling system, you may have heard terms like “single-stage,” “two-stage,” and “variable speed.” But what does variable speed actually mean—and does it make a difference in how comfortable your home feels?
Unlike traditional HVAC equipment that typically operates at one or a few set levels, variable-speed technology allows certain components of your system to adjust their output based on your home’s current heating or cooling needs. This can mean longer, more consistent operating cycles, improved temperature control, quieter performance, and better humidity management—an especially valuable benefit during hot, humid Mississippi summers.
In this guide, the team at RW Heating, Air, Plumbing & Electrical breaks down what variable-speed HVAC technology is, how it works, and the potential benefits it can provide for homeowners throughout the Mid-South.
Variable Speed Handlers – How Do They Work?
Modern air conditioning systems rely on compressors that pump refrigerant to and from the coils of your indoor unit. When the temperature rises, and you turn your thermostat down, the compressor speeds up and pumps refrigerant to the AC’s air handler more quickly. The handler works in conjunction with the blower, which also runs at a higher speed to cool down the home.
New variable-speed AC units contain variable-speed compressors that are capable of running at different speeds, meaning you can cool your home at different rates. When the temperature outside is mild, you may not need your AC unit to run at 100 percent. Having the flexibility to deliver cool air at a customized rate gives you more control over the comfort of your home and the amount of energy you use to keep it comfortable.
Think about it this way. A standard air handler would introduce a blast of cool air into your home until the house reaches a set temperature. Once it hits this specified temperature, the unit will go into standby mode. Variable speed handlers, on the other hand, run at various speeds based on your preferred comfort level. With a variable-speed air conditioner, you get more consistent cooling with other key benefits, such as less noise.
When you rely on RW Heating, Air, Plumbing, and Electrical to install your new variable-speed system, you are provided with our satisfaction guarantee. We ensure that any system installed will perform as we have stated and agreed on and that our technicians will care for your home and complete the job with speed and precision.
Single-Stage vs. Two-Stage Compressors
The majority of central AC systems in the U.S. use single-stage compressors. This type of compressor has remained the standard for decades and is the most familiar to people with cooling units. Single-stage compressors turn on automatically when the indoor temperature in the home exceeds the temperature set on the thermostat. This means that if you set your thermostat to 70 degrees, the AC will run once it reaches 71.
Unlike variable speed compressors, traditional single-stage handlers always operate at 100 percent capacity. As running at full speed at all times can quickly cool off the home, you’ll often find that your cooling system turns on and off frequently throughout the day as the temperature rises and falls.
With a single-stage compressor, homeowners are limited to basic “on” and “off” switches with minimal flexibility. Two-stage systems take this concept a step further by offering homeowners more control over the temperature in their homes. With a two-stage system, you can choose from other settings, such as “high” or “low”. The high stage will generally operate at 100 percent capacity, while the low stage will often operate at around 65 percent capacity.
Saving Money with a Variable Speed System
If you’re looking for ways to save money on your heating and cooling costs, a variable-speed system may be the solution. Installing a variable speed furnace or air conditioner can lead to considerable savings over traditional single-stage or two-stage systems, despite common misconception.
Some people believe that variable-speed HVAC equipment uses more energy than traditional systems because it is constantly running. However, this isn’t true. Variable-speed systems run at just 50 percent capacity and use around 75 percent less energy than a single-stage unit that runs at full speed. Making the switch to a variable-speed system could save you hundreds of dollars each year in energy costs.
While variable speed systems can lead to noticeable energy savings, there are some downsides to consider. For example, a variable-speed HVAC unit is often much more expensive to purchase than a single-stage or two-stage system. However, many homeowners find that their long-term energy savings greatly exceed the initial expense.
At RW, we offer various discounts and financing options to help you save money and get the HVAC services you need when you need them. Give us a call anytime at (662)429-2590 to learn more about our special offers and great financing options.
Achieving Consistent Indoor Comfort
Traditional heating and cooling systems can lead to uneven indoor temperatures, with it sometimes being too cold and other times too warm. This is because single-stage units turn on at full blast and continue pushing out cold or hot air until the space has reached the set temperature. The unit then suddenly turns off until the temperature gets too high or drops too low.
In comparison, variable-speed systems use continuous heating and cooling cycles to keep the temperature in the home consistent. This leads to fewer hot and cold spots, making the home more comfortable for occupants.
Maintaining Humidity Control for Improved Indoor Air Quality
Humidity can make your home uncomfortable, especially during the hot, sticky summer. When central air conditioners are doing their job, indoor humidity levels are controlled, making the space more pleasant. However, some systems are more efficient at controlling humidity than others.
Variable-speed AC units are better equipped to control humidity compared to single-speed systems. As variable speed units are designed to operate for a longer period of time, they are better able to remove more moisture from the air. In fact, variable-speed systems can remove about 400 percent more moisture than single-stage systems.
Lowering Noise Levels in the Home
Having HVAC equipment continually running may seem like a noisy nuisance, but with variable-speed systems, this is anything but the truth. Variable-speed furnaces and AC units are surprisingly quiet and will not typically impact your living environment.
The noise level associated with variable-speed compressors is often much less than that of single-stage systems. This is because single-stage units are constantly turning off and on, and when running, blow air with full force. Variable-speed systems run consistently, and often at lower speeds, which generally results in quieter operation.
RW Heating, Air, Plumbing, and Electrical only works with leading brands to ensure satisfactory results with each install.
Factoring in the Disadvantages of Variable Speed Systems
While variable-speed HVAC equipment has many advantages, there are some downsides to consider before making the switch. First, the initial cost of these systems can be off-putting to some homeowners. Compared to a single-stage or two-stage system, you can expect a variable-speed unit to run anywhere from $1,500 to $8,000 or more.
Next, a variable-speed system is not needed for all homes. If you live in a location with mild temperatures and ideal humidity levels, this type of unit may not be useful, and a single-stage compressor may be a better option.
Finally, you’ll need to consider whether installing a variable-speed system will be cost-effective based on your current setup. Some systems may not be compatible with uninsulated ducts. As variable-speed AC units run long-term, they create condensation in ducts, which can lead to water damage and possible mold formation.
Is a Variable-Speed HVAC System Right for Your Home?
Variable-speed HVAC systems can offer a number of benefits, from more consistent indoor temperatures and quieter operation to improved energy efficiency and better humidity control. For homeowners in Mississippi’s Mid-South, that added humidity management can make a noticeable difference in overall home comfort during the warmer months.
The right system for your home depends on several factors, including your home’s size, comfort needs, existing equipment, and budget. The experienced team at RW Heating, Air, Plumbing & Electrical can help you compare your options and determine whether variable-speed technology makes sense for your home.
If you’re considering an HVAC replacement or simply want to learn more about today’s high-efficiency heating and cooling options, contact RW Heating, Air, Plumbing & Electrical today to schedule an appointment with our team.
