$200 OFF Special price for Installation of a replacement Humidifier read more
Our Blog
Deljo Heating & Cooling
2 minutes read

Dehumidifier vs Air Conditioner: What’s the Difference?

Published by Luke Weiden

Air conditioners and dehumidifiers work in similar ways but deliver slightly different results. Both devices run warm air over cooling coils. Doing so cools air and creates condensation, like the beads of water that form on the outside of a cold drink on a hot day. However, the devices also generate heat, which only the air conditioner will funnel outdoors.

Because the two devices have different goals, they rely on different sensors to know when to operate. Central air conditioners kick into gear when their thermometers measure temperatures higher than the temp you’ve programmed into your thermostat. Dehumidifiers rely on hygrometers to signal when relative humidity levels exceed your ideal levels and activate accordingly.

Once temperatures reach a comfortable level, air conditioners cycle on and off several times every hour. As a result, they’re often unable to effectively manage excess humidity levels on their own. This can leave your space feeling cool and clammy, which is less than ideal. Dehumidifiers ignore temperature, working only to eliminate moist air.

So, both dehumidifiers and air conditioners remove moisture from the air, reducing the level of humidity in your home. AC units do so as a byproduct of cooling the air while in some cases dehumidifiers can actually raise the temperature slightly. By pairing your AC with a dehumidifier, you can fine-tune your climate any way you like.

With temperatures and humidity levels rising, air conditioning season is fast approaching. But here in Chicago, humidity typically becomes an issue before it makes sense to turn on the AC. Installing a whole-house dehumidifier is the perfect way to remove humidity from the air during these cool, clammy months. Plus, doing so will improve your indoor air quality.

If you need help controlling the climate in your home, we can help. At Deljo, we’ve spent nearly 100 years keeping clients comfortable. From AC service to dehumidifier installations, we can make sure your home has the equipment it needs to keep you content. Contact us today to learn more about our various home comfort solutions or to schedule a service call.

Recent Posts


Discover the Winter Benefits of Mini-Split HVAC Systems

Dealing with Chicago’s unpredictable weather can be a challenge. This can mean that traditional HVAC systems might not be the best solution. Ductless mini-split HVAC systems can be real game-changers! So, what's the deal with these mini-splits? They are cost-effective and energy-efficient. Imagine the power of a single outdoor unit pumping warm air directly into your room. Streamlined into your home through wall or ceiling units, there is no messy ductwork. 4 Main Advantages of Mini-Split Systems Your heating system...

Read More

7 Signs You Need a New Furnace

As winter approaches, your heating system becomes crucial for combating the freezing temperatures. At some point, you will need to replace furnaces, like all appliances, because they have a limited lifespan. 1. Age of the Furnace A furnace has an average lifespan of 15–20 years. If your furnace is approaching or has exceeded this age, it’s time for a replacement. Newer models are not only more energy-efficient, but they also have advanced features that can improve your home's heating. 2. Increasing...

Read More

Pollen and HVAC: Fall Maintenance Tips for Homeowners

When we begin to notice the vibrant colors of autumn, it's time to shift our focus to essential fall HVAC maintenance. Pollen is not only a problem in the spring, but it can also damage your condenser in the fall. Pollen is not only a cause of allergies; it can also cause problems with your condenser. As trees and plants release pollen into the air, some of it inevitably finds its way into your outdoor HVAC unit. Over time, this...

Read More