If you have a newly built residence in Portland, it was probably constructed with energy efficiency at the top of the list. This means more insulation and windows and doors with enhanced seals. While these enhancements are good for keeping your heating and cooling expenses affordable, they’re not so fantastic for your indoor air quality.

Your HVAC system needs to work with a filter. But if you have a flat filter, you won’t be receiving enough filtration. This kind only provides the smallest amount of protection by stopping dust from getting into your home comfort system.

While you can upgrade to a pleated filter or one with a higher MERV rating, it still might not be ample filtration, particularly if someone in your residence has allergies or other respiratory problems.

That’s where a whole-house air purifier can be a good option. These systems are attached within ductwork to provide powerful filtration throughout your home. Depending on the type you select, you’ll be able to get rid of allergens, odors and even some viruses under certain airflow conditions.

Here are our best options from Lennox, an industry leader in air purification.

Best Air Purifiers from Lennox

1. HEPA Air Purifiers

A HEPA air purifier, like the Healthy Climate® High-Efficiency Particulate Air Filtration System, gives premium filtration. These filters were first developed to protect scientists as they created the atomic bomb. Today, they’re a must-have in hospitals and other medical buildings.

The Healthy Climate HEPA Filtration System includes a three-step filtration process. A prefilter catches larger particles before the HEPA filter catches the rest of tiny particles. Then, a charcoal filter takes care of odors and chemical vapors.

The PureAir™ S Air Purificati