Quest MERV 13 Replacement Filter for Quest 70 Pint - 11.38 x 9 x 0.75

Quest 70 MERV 13 Replacement Filter, and Why Its Interval Is Shorter

Quest part 4037724 is the pleated panel the Quest 70 Pint breathes through. It is the only thing between the room and the coil. Quest's own spec sheet for the 70 gives the panel as 9 x 11.38 x 0.75 inches. Therma-Stor catalogues the same filter as a nominal 9 x 11 x 1. Both describe one panel. The EPA holds MERV 13 to 50 percent or better capture from 0.3 to 1 micron, then 90 percent from 3 to 10. Spores sit in that lowest band. Keeping the face clean is what stops the machine drawing full power for fewer pints. The 70's manual treats the filter as routine maintenance rather than a spare part. It sets a shorter interval than the rest of the line to match.

Quest 70 Filter Size, the Three-Month Check, and the Names It Sells Under

The Quest 70 is the exception in this line on timing. Its manual calls for the filter to be checked every three months, not six. It recommends replacing the panel every three to six months. Every other Quest family here runs a six-month check. The 70 moves its air through less media, so the face loads faster. Quest's warning is blunt. Running the unit without a filter, or with a less effective one, may cause internal damage and invalidate the warranty. The same panel travels under other Therma-Stor brands, which is why searches for the Santa Fe or Broan-NuTone MERV 13 land here. Match on 4037724 and the brand on the box stops mattering. Bare part-number searches are common on this one. Worth keeping 4037724 somewhere findable, taped inside the service panel if nothing else. The brand on the replacement box will vary; the number will not. One caveat: this is the finest grade Quest offers for the 70, with no coarser option to trade capture for interval.

Key Features

• Quest part 4037724: The part number to match for a single panel, which is how these are stocked
• 11.38 x 9 x 0.75 actual, 9 x 11 x 1 nominal: Both figures published here, which settles the gap between Quest's spec sheet and the Therma-Stor catalogue
• Three-month check, not six: The Quest 70 manual is the exception in this line, calling for a check every three months and replacement every three to six
• MERV 13 pleated media: EPA holds the grade to 50 percent or better from 0.3 to 1 micron and 90 percent from 3 to 10
• Keeps the evaporator coil clean: Quest warns that running without a filter, or with a less effective one, may cause internal damage and invalidate the warranty
• Holds rated capacity: A loaded face makes the unit draw full power for fewer pints, so fresh media is the simplest way to hold output
• Fits the Quest 70 Pint: Quest lists the unit as part 4033750, and it takes a single panel
• Sold under sibling brands too: The same Therma-Stor panel appears as a Santa Fe and a Broan-NuTone filter, so 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.