What Does Variable Speed Mean?

If you’ve been considering upgrading your heating or cooling system, you may have come across the term “variable speed.” Unlike traditional systems that typically operate at a single speed, variable speed technology allows your HVAC equipment to adjust its output to match the precise demands of your space. This can lead to greater energy efficiency and improved indoor air quality for a healthier and more comfortable home environment.

Serving Houston and the surrounding areas, The Lee Thompson Co. proudly offers top-rated cooling, heating, and air quality solutions. From AC installation to furnace repair, we can take care of all of your HVAC needs, including upgrading or installing a variable-speed unit.

Let’s explore the fundamentals of variable speed systems, their benefits, and why they may be the right choice for your HVAC needs.

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 The Lee Thompson Co. to install your new variable-speed system, you are provided with our Performance and Satisfaction Guarantees. The Lee Guarantee ensures 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 The Lee Thompson Co., we offer various discounts and financing options to help you save money and get the HVAC services you need when you need them. Ask our team about current offers, such as $250 off any heat or AC replacement, $25 off any heat or AC repair, and free estimates on equipment replacements. Give us a call anytime at (713) 766-4846.

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.

The Lee Thompson Co. only works with leading brands to ensure satisfactory results with each install. Our recommended products include American Standard, Lennox, and Mitsubishi.

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.

Schedule Reliable Service with The Lee Thompson Co.

Understanding variable speed in HVAC systems is crucial for optimizing energy efficiency, enhancing comfort, and improving indoor air quality. As more homeowners prioritize sustainability and efficiency, investing in variable-speed technology can lead to significant long-term savings and a more comfortable living environment.

If you’re considering upgrading your existing system or needing a new installation, the HVAC specialists at The Lee Thompson Co. can help you choose a system that best reflects your needs and preferences. Our team of licensed and trained technicians is background-checked, receives ongoing safety training, and is fully insured. Call us today at 713-766-4846 for prompt service or schedule online.