What the Data Shows About Impeccable Air’s Vent Filtration Efficiency

Most homeowners believe their HVAC system’s single furnace filter is enough to keep their air clean - but that’s not the full story.

At Impeccable Air, we designed our filtered return grilles to capture contaminants right at the source - at every air return in the home, before they ever build up in your ductwork or reach your furnace filter.

Recently, we conducted a 90-day side-by-side field test to measure exactly how much of a difference this makes. The results? Cleaner air, less system strain, and measurable energy savings.

How Impeccable Air Return Vent Filters Perform in a Real-World Test

We installed eight Impeccable Air filtered return grilles in one home and compared it against an identical system operating with only a standard furnace filter in place.

We tracked pressures at key points:

• Across each return grille

• In the return plenum

• Across the furnace filter

• In the supply plenum

These readings reveal how efficiently air moves through the system (static pressure). Higher pressure = more restriction = more blower effort and higher energy use.

Baseline HVAC Airflow and Furnace Vent Filter Performance (Day 0)

At installation, both systems performed almost identically — proving our filtered grilles do not restrict airflow.

90-Day Results: How Air Return Grille Filters Maintain Clean, Efficient Airflow

What the Data Shows About Impeccable Air’s Vent Filtration Efficiency

• Furnace filter loading slowed by 93%.
  The system without filtered returns saw its furnace filter pressure rise by 44%, while our system increased by just 3%.

• System balance remained identical.
  Despite small rises at each grille (0.018 → 0.036 inH₂O), total static pressure stayed flat at 0.274 inH₂O — meaning no added strain on the blower.

• Contaminants captured at the source.
  All visible dust, fibers, and debris were trapped at the returns. The furnace filter behind them? Still spotless after 90 days.

Energy Efficiency Gains with Layered Air Return and Furnace Vent Filters

When the furnace filter clogs, the blower motor must work harder to move the same amount of air. Based on our test data, the difference was clear:

Over time, that can start to make a considerable difference. Not including the improved comfort, reduced service needs, and lower wear on the blower.

How Impeccable Air’s Return Vent Covers and Filters Improve Indoor Air Quality

By filtering air before it enters your HVAC system, our return grilles:

• Reduce furnace filter loading by 60–90%

• Maintain steady airflow and static pressure

• Keep blower motors running at peak efficiency

• Capture contaminants where they start

• Improve overall indoor air quality

In short, we’ve distributed the work of filtration across multiple points - reducing system strain, improving efficiency, and delivering cleaner air in every room.

Watch Our Air Vent Filter Test Results in Action

https://www.instagram.com/p/DPwyY8CCTRY/?hl=en

In the clip, you’ll see the filters removed from our office after 90 days, completely covered in contaminants, while the furnace filter behind them remains brand new. Also, reference the image below showing the difference between the dirty furnace filter and the furnace filter that remained clean after the 90-day timeframe:

Figure 1 - Comparison between the filter that was in place with no Impeccable Air Return Grilles (left) vs the filter that was in place in combination with 8 Impeccable Air Return Grilles (right)

The Bigger Picture: Whole-Home Vent Filtration for Cleaner, Healthier Air

It’s not just about saving watts - it’s about building cleaner, more efficient homes.
Every builder, HVAC contractor, and homeowner now has a simple way to protect air quality and HVAC performance at once.

• Cleaner air.

• Easier system operation.

• Lower energy consumption and longer system life.

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