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About TerraFirma

How to Reduce Indoor Allergens in Your Home

How to reduce indoor allergens in your home - Image 1

Dealing with outdoor allergies is one thing, but when you experience indoor allergies, it feels like you can't catch a break from all your symptoms.

Thankfully, there are a few ways to reduce allergens in your home.

The Link Between Allergies and Indoor Air Quality

Many of these symptoms can be linked to a common cause: indoor air quality. The good news? Indoor air quality is something we can improve.

To start with, there are 5 basic types of compounds that impact the air quality in our homes:

  • Toxic compounds

  • Infectious illness

  • Allergens and particulates

  • Microbial growth

  • Safety gases

Symptoms of these compounds can include respiratory irritation, infection, congestion, sneezing, coughing, asthma flare-ups, illness, fatigue, and much, much worse as concentration levels and exposure increase.

During colder months, these compounds become trapped in the home, worsening our indoor air quality and affecting our health. Fortunately, there are many ways to manage these compounds and clean the air we breathe.

How to Improve Indoor Air Quality and Reduce Allergens

Air Filtration

Air filtration is the first line of defense in improving indoor air quality. Some airborne compounds like radon are extremely small and may pass through traditional filters freely, so consider an air filter that is rated to deal with these smaller compounds.

Crawl Space Encapsulation

Encapsulating your dirt crawl space isolates damp, exposed earth from your home using a durable, reinforced plastic liner. In addition to preventing mold growth, encapsulated crawl spaces can also provide a clean, dry space for extra storage.


Depressurization is the most effective solution for reducing radon levels in your home. This involves creating a pathway for radon gas to travel away from your living spaces, to be vented safely outside. The EPA recommends that homes with radon levels above 4 pCi/L be mitigated, and as the leading cause of lung cancer for non-smokers, all homes should have their radon level tested.


Lastly, a dehumidifier can help deal with water vapor and condensation in your basement, reducing musty smells and moisture that mold and dust mites thrive in. A dehumidifier extracts moisture from the surrounding area, and a quality dehumidifier can extract several gallons of moisture from the air each day.

Knowing what causes poor indoor air quality and how to improve it is the first step in making your home a safer, more comfortable place to live. 


If you’d like to get a second opinion on how your home’s indoor air quality can be improved, be sure to contact TerraFirma for a free evaluation!


our service area

We serve the following areas

  • Adams
  • Adrian
  • Arock
  • Athena
  • Baker City
  • Bates
  • Bridgeport
  • Brogan
  • Burns
  • Cove
  • Crane
  • Drewsey
  • Durkee
  • Elgin
  • Enterprise
  • Haines
  • Halfway
  • Harper
  • Helix
  • Hereford
  • Huntington
  • Imbler
  • Imnaha
  • Ironside
  • Jamieson
  • Jordan Valley
  • Joseph
  • Juntura
  • La Grande
  • Lostine
  • Meacham
  • Milton Freewater
  • North Powder
  • Nyssa
  • Ontario
  • Oxbow
  • Pendleton
  • Pilot Rock
  • Prairie City
  • Richland
  • Riverside
  • Summerville
  • Sumpter
  • Ukiah
  • Union
  • Unity
  • Vale
  • Wallowa
  • Westfall
  • Weston
Our Locations:

TerraFirma Foundation Systems
761 NE Garden Valley Blvd.
Roseburg, OR 97470

TerraFirma Foundation Systems
13110 SW Wall St
Portland, OR 97223

TerraFirma Foundation Systems
10111 S Tacoma Way D5
Tacoma, WA 98499

TerraFirma Foundation Systems
2001 NE 117th ST
Vancouver, WA 98686
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