Do You Need Two AC Units In Your Home?

5 HVAC Problems Caused by Air Ducts
September 3, 2018
Show all
two AC units in your home

Do you need two AC units in your home? This is a valid question. Particularly with two-story homes, common in our area, two AC units are often recommended. Let’s take a look at some of the pros and cons of a two-unit system in your home.

Pro: Temperature Balance

This may be one of the most important reasons for having two AC units in your home. Two units allow for an easier time balancing the desired temperature in your home. Generally, one area of your home will be warmer or more difficult to cool than another. In a two-story home, the upstairs area is often warmer, as warm air rises.

Having two AC units in your home can help balance out the temperature. You can choose different temperatures to allow for efficiency in running the units. For example, if the upstairs of your home is rarely used during the day, you can set the thermostat for that unit much higher than you would be able to with one unit. This allows you the freedom to keep the downstairs at a more comfortable temperature for the areas you use, without using the energy to cool the entire home. This brings us to the second pro of having two AC units in your home: energy savings.

Pro: Energy Savings

When your home has one, non-zoned AC unit, the entire home must be cooled to attain the desired temperature. With two units, you have more control over how much energy is used to keep a particular area comfortable. When your system does not have to work as hard to cool the entire home, even often unused areas, you save on energy consumption and cost. Essentially, when you reduce the square footage being consistently cooled, your costs go down. Decreasing energy costs also mean you are decreasing your carbon footprint.

Pro: Backup In Case of Failuretwo AC units in your home

We know, here in Houston, that it is no fun when you have an AC failure. Especially since failures usually happen in the dead of summer. Although we usually offer our customers with failures a portable AC unit if we can’t get things back up and running right away, these units only cool a portion of your home. If you have two AC units in your home, you can rely on one unit to keep your family cool while the other is being serviced, repaired, or even replaced. Having this reassurance that you won’t be left in sweltering heat is so beneficial.

Cost Considerations of Two AC Units in Your Home

Having two AC units in your home may be more expensive to install than just one unit. However, the cost difference may not be as much as you think. AC units are recommended for your home based on square footage and cooling needs. If you have two units, the size of the units needed will be much smaller to cool the same square footage of space. Additionally, the savings you will experience in energy costs can help to offset the cost of the two units. Heating and cooling habits, size of your home, layout of your home, and more will help determine what the best option for your family is.

Another Alternative: Single-Unit Zoned System

Two AC units in your home may not always be the right solution, even for a 2-story house. Another option might be a single-unit zoned HVAC system. A zoned system can control the temperature differently in different areas of your home, as well. This is done through control of dampers, which change the flow of cool or warm air to different areas of your home. These dampers are inside the ductwork, and the open and close as needed to help with temperature control. The cost of a single-unit zoned system installation would be more than a regular non-zoned system, but like having two units, it can greatly decrease your energy costs.

Every home and every family is different. It is important to evaluate your specific needs to see if a single unit non-zoned system, a single-unit zoned system, or having two AC units in your home is the best option for you. Make sure you trust your HVAC professional to give you honest and fair answers to the questions you have about your family’s HVAC needs.

In conclusion, there are many factors that determine whether you need two AC units in your home. As with any decision, there are pros and cons to having two units. However, we always want to partner with you to find what best fits your needs. If you need a trusted partner to give you honest information, be sure to give us a call.