Quest MERV 11 Air Filter for Quest 5 Series - 16in x 20in x 2in

MERV 11 Replacement Filter for the Quest 5 Series Dehumidifier

This is a genuine replacement filter for Quest's 5 Series dehumidifiers, rated MERV 11 -- a mid-range filtration grade that trades some of the finer particle capture of a MERV 13 filter for lower airflow resistance, appropriate to how this particular series is engineered to run.

It's built from synthetic filter media at 16in x 20in x 2in and removes dust, pollen, dander, mold spores, and smog particles from air passing through the compatible dehumidifier.

Key Features & Benefits

• MERV 11 filtration rating — captures dust, pollen, dander, mold spores, and smog particles at a mid-range efficiency level appropriate to the compatible unit's airflow design.
• Synthetic filter media — provides consistent filtration performance across the filter's service life compared to lower-grade fiberglass media.
• Genuine replacement fit — sized to the Quest 5 Series dehumidifier lineup, including Dual 105, 155, 165, 205, 225, Hi-E Dry 120, and Hi-E Dry 195 models.
• 16in x 20in x 2in dimensions — matches the filter housing on the compatible unit series without modification.
• Broad model compatibility — one filter part number covers multiple Quest 5 Series models, simplifying replacement stock for operations running several of these units.

Who Should Use This

This filter is for operators of Quest Dual 105, 155, 165, 205, 225, Hi-E Dry 120, or Hi-E Dry 195 dehumidifiers needing a genuine replacement filter at the unit's designed MERV 11 rating, rather than a mismatched aftermarket substitute.

About Quest

Quest is a Therma-Stor brand. It focuses on commercial dehumidification. Therma-Stor is headquartered in Madison, Wisconsin. It's the same parent company behind the Anden brand. Therma-Stor has built dehumidifiers and environmental-control equipment for decades. Quest specifically targets commercial and industrial moisture control. Think indoor cultivation, food production, and commercial buildings. That's a different focus than residential basement units. Many overhead models use the company's patented M-CoRR design. M-CoRR stands for multi-coil refrigeration. The design recycles heat pulled from the air. That happens during dehumidification itself. It improves energy efficiency as a result. It also cuts heat sent back into the room.

Frequently Asked Questions

Which Quest dehumidifiers does this filter fit?

This MERV 11 filter is sized for the Quest 5 Series lineup, covering Dual 105, 155, 165, 205, 225, Hi-E Dry 120, and Hi-E Dry 195 dehumidifiers. Confirm your specific model before ordering, since filter housing dimensions can vary even within one series designation.

What's the difference between this MERV 11 filter and Quest's MERV 13 filters used on other models?

MERV 11 sits below MERV 13 on the filtration efficiency scale, capturing dust, pollen, dander, mold spores, and smog at a somewhat coarser level than a MERV 13 filter. Quest matches each unit's stock filter rating to that unit's blower design, so a MERV 11 filter isn't a downgrade for this series -- it's the specification the unit is built around.

What is the filter media made of?

This filter uses synthetic filter media rather than basic fiberglass, which typically holds its filtration performance more consistently across the service interval. That consistency matters for keeping airflow and filtration efficiency stable between replacements.

How do I know when to replace this filter?

Inspect the filter periodically for visible dust loading and discoloration, and replace it on a regular schedule appropriate to how dusty your grow space runs. A heavily loaded filter restricts airflow and can reduce the dehumidifier's effective performance even before it looks completely clogged.