Quest MERV 10 Replacement Filter for Quest Hi-E Dry 140 - 14 x 12 x 1

Quest MERV 10 Air Filter, Sized 14 x 12 x 1 for One Machine

Quest part 4038558 is a single-listing filter. One panel, one unit, no cross-compatibility to work out. Quest's own description is that the MERV 10 media captures harmful particulates from the air. It protects both the space and the internal components of the dehumidifier. On the ASHRAE scale the grade sits between two Quest publishes elsewhere. MERV 8 is held to 20 percent or better from 1 to 3 microns and 70 percent from 3 to 10. MERV 11 is held to 65 and 85 across the same bands. MERV 10 falls in that gap, which is a sensible place for a machine that gets moved into rooms rather than mounted above one.

Quest Hi-E Dry 140 Filter, and Why a Portable Loads Differently

The Hi-E Dry 140 is the only unit Quest lists this against, under part 4045100-30. It is also the only portable in this group of filters. That changes how the media loads. An overhead unit lives above a canopy in one room and sees a fairly steady dust profile. A portable gets wheeled into whichever room needs it, often the one being turned over, which is the dustiest moment in the cycle. Check it on the way in rather than on a calendar. Quest does not publish a replacement interval for this filter, and rather than borrow one from another Quest family we have left that figure off. The same panel also sells under the Phoenix name, another Therma-Stor brand, so matching on 4038558 is the reliable route. A Phoenix-branded box with that number in it is the same panel.

Key Features

• Quest part 4038558: The part number to match for a single panel, which is how these are stocked
• MERV 10 media: Sits between MERV 8, held to 20 percent from 1 to 3 microns, and MERV 11, held to 65 percent across the same band
• One filter, one unit: Quest publishes the Hi-E Dry 140, part 4045100-30, and nothing else against this panel
• Sized for a portable: The Hi-E Dry 140 is moved between rooms, so it meets its dustiest air during a turnover rather than on a schedule
• Keeps the internal components clean: Quest's own wording is that the media protects your spaces and the internal components of the dehumidifier
• No published interval: Quest does not state a change interval for this filter, so none is quoted here rather than borrowing one from another family
• Also sold as a Phoenix filter: The same Therma-Stor panel appears under the Phoenix name, which is why the part number is the reliable match

Technical Specifications

More on how Quest and Anden size their filters, what the MERV numbers mean and when each brand says to change them: Quest and Anden Filters: Sizes, Ratings and Replacement Timing.