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Indoor Air Quality

Indoor Air Quality Services in Central Indiana

Although most homeowners pay close attention to the temperature of the air inside their homes, many forget to realize the importance of the quality of the air. Poor indoor air quality can lead to health issues among family members, especially those with asthma, allergies or other respiratory illnesses.

Fortunately, you don’t have to suffer through the negative impacts of poor indoor air quality. Adding indoor air quality solutions such as whole-house humidifiers, dehumidifiers and UV air purifiers can significantly improve your home’s air quality. If you’re ready for a happier and healthier home, contact the indoor air quality specialists at Johnson Heating | Cooling | Plumbing. We’ve proudly provided heating, cooling and indoor air quality services to the homeowners of Greenwood, IN, Indianapolis and the surrounding areas since 1968. Contact us today to schedule an appointment.

Keep reading to learn about the types of indoor air quality products Johnson repairs and installs.

Thermostat Repair & Replacement

The thermostat is what allows you to make adjustments to the indoor temperature of your home or business. If yours is malfunctioning or dead, we can repair or replace it.

UV Air Sanitizers

You could be continually removing allergens, pathogens, and other contaminants from your indoor air with UV air sanitizers. Let us show you how they work.

Furnace-Mounted Humidifiers

Wintertime heating can make for air so dry it leads to discomfort. One way to address this is with the right furnace-mounted humidifier to put moisture into the air.

Whole House Humidifiers

When your home’s air is too dry, you are at higher risk for respiratory ailments. The right whole house humidifier can solve dry air problems for good.

Indoor Air Quality Solutions in Central Indiana

Regardless of which indoor air quality solution you choose, the end result will be better air which can help the performance of your HVAC system. When your indoor air is filtered better, or you are able to change the humidity levels in your home to stop contaminants from growing and spreading, you can eliminate the amount of particle matter that clogged up your furnace or air conditioner. When you have a cleaner system, it will respond better to thermostat controls and won’t have to work as hard to adjust to the temperature settings. Many of our customers who have invested in indoor air quality solutions notice changes in their energy bills too. 

UV Air Purifier Installation

Did you know that indoor air, on average, is 2 to 5 times more polluted than the air outside? Poor indoor air quality can play a significant role in the health of you and your family. Contaminants and pollutants in the air can exacerbate allergies and asthma symptoms and lead to sinus problems, eye irritation and other severe reactions.

To ensure optimal indoor air quality, consider installing a UV air purifier. UV air purifiers are connected to the return duct of your HVAC system and capture the air through a small chamber where it is exposed to UV-C light. UV light captures and kills harmful bacteria and viruses, rendering them unable to reproduce.

To learn more about UV air purifier installation, contact the HVAC professionals at Johnson today.


Summers in Greenwood, IN and throughout Central Indiana can be hot and humid. Once the indoor relative humidity level rises above 50%, it can make your living environment feel sticky and downright uncomfortable.

High humidity levels can cause health issues and damage to your home. Elevated humidity levels, for example, can lead to dehydration, skin and throat irritation, virus transmission, increased vulnerability to infections, allergy-like symptoms and more. Excess humidity can also lead to mold that can damage your home and cause health issues.

Installing a whole-house dehumidifier to your HVAC system is an excellent solution to keep humidity levels within the balanced range of 30-50%. These systems work by drawing air through the return duct and pulling moisture out of the air. The moisture condenses into water droplets and is funneled out of your home through a condensate drain.

Johnson offers:

  • Dehumidifier Installation
  • Dehumidifier Repair


Whole home humidifiers, meanwhile, perform the exact opposite function as dehumidifiers. During the dry, cold winters in Greenwood, IN, humidifiers add moisture to the air to keep humidity levels above 30%. 

Like high humidity levels, low humidity distributed by your furnace can have its own negative effects on your health and home. Health issues can include bloody noses, cracked lips, dry skin, scratchy throats and respiratory issues. Dry air can also cause wood furniture, flooring and instruments to crack and become damaged.

Unlike using a portable humidifier that can only service one room or small area of your home, installing a whole house humidifier to your HVAC system can provide the needed moisture to keep your entire home healthy and safe from issues caused by high humidity levels. Contact the indoor air quality professionals at Johnson for:

  • Furnace Mounted Humidifier Installation
  • Humidifier Installation
  • Humidifier Repair


The thermostat acts as the “brain” of your HVAC system. When it isn’t working properly, neither will your heating and cooling system. If you find that it takes a long time for your HVAC system to reach the set temperature on your thermostat or you want better control of your home’s temperature to control energy bills, upgrading your thermostat can be an affordable solution. You may also want to consider installing a new thermostat if you notice any of the following signs:

  • Your furnace and air conditioner aren’t providing your home with heating and cooling, respectively
  • The furnace is overheating or won’t shut off
  • The air conditioner won’t shut off
  • The furnace or blower fan is still running when the thermostat is off
  • Your thermostat is old
  • Dirt and debris buildup
  • Wrong thermostat placement

If the thermostat in your Greenwood, IN home is old or malfunctioning, consider upgrading to a new programmable thermostat or smart thermostat. Programmable thermostats allow you to pre-set the unit to different temperatures based on the time and day of the week. For example, when you’re away at work during the winter, you can set the thermostat to automatically lower the temperature to 62 degrees until 5 p.m. and have it go back up to 68 degrees by the time you arrive home.

With a smart thermostat, you can also pre-set the temperature, but they take their convenience to a whole new level. Smart thermostats allow you to change the temperature remotely from your smartphone or device. Many newer models also come with artificial intelligence that can learn your temperature preferences over time and make automatic adjustments. For thermostat repair and replacement service, contact Johnson today.

Whole House Humidifier

Contact Johnson for Indoor Air Quality Services in Central Indiana

At Johnson, we care about the health of you and your family. If you’re experiencing poor indoor air quality in your Central Indiana area home, we can help. Contact us today to schedule an appointment for indoor air quality service.

We Proudly Serve Central Indiana, including…
New Whiteland


Center Grove