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Comparing Filterbuy vs Aerostar? Both are reputable brands offering pleated HVAC and furnace filters in the common MERV 8, 11, and 13 range. The main differences come down to fit (standard vs custom sizes), specialty options (like carbon), and how you prefer to buy (direct-to-door vs distributor/retail). This guide highlights what’s the same, what’s different, and includes a quick side-by-side table so you can choose the brand that best matches your system and air-quality goals. Always check your HVAC manual before changing MERV levels.
Filterbuy is a convenient option if you want filters made in the USA, free U.S. shipping, optional auto-delivery, and custom sizes cut to the nearest 1/8 inch.
Aerostar is a Filtration Group brand with clearly documented series for MERV 8/10 (Series 400), MERV 11 (Series 1100), and MERV 13 (Green Pleat)—a good fit if you typically buy via distributors or need formal spec sheets.
Feature
Filterbuy
Aerostar (Filtration Group)
Core MERV options
MERV 8, 11, 13 (MERV 13 can trap up to 98% of particles down to 0.3 µm)
Series 400: MERV 8 (Standard) / MERV 10 (High-Capacity); Series 1100: MERV 11; Green Pleat: MERV 13
Depths
1", 2", 4" across sizes
1", 2", 4" across Series 400/1100/Green Pleat
Odor/Carbon options
“Odor Eliminator” activated-carbon pleats (about 3-month service life)
Series 550 carbon pleat (MERV 5–6) for intermittent odor control
Custom sizes
Yes — to the nearest 1/8"
Typically standard sizes (custom residential not highlighted)
How you buy
Direct from Filterbuy.com; free U.S. shipping; Auto-Delivery
Widely distributed/retail; strong published spec sheets
Made in USA
Filters manufactured in the USA
Many listings note manufactured in the USA by Filtration Group
Both brands sell pleated filters across MERV 8, 11, and 13. Filterbuy’s MERV 13 line is advertised to “trap 98% of airborne particles as small as 0.3 microns,” while its MERV 8 and MERV 11 pages outline everyday and allergy-level use cases. Aerostar groups performance by series: Series 400 (Standard Capacity MERV 8 / High-Capacity MERV 10), Series 1100 (MERV 11), and Green Pleat (MERV 13).
Extra info: MERV 8 is a safe default for dust and lint, MERV 11 adds stronger capture for smaller allergens/pet dander, and MERV 13 targets finer particles. Check your system manual before upgrading to avoid airflow issues. Filterbuy labels these options clearly on site; Aerostar’s PDFs provide the detailed performance curves many pros want.
Filterbuy’s core pleats come in 1", 2", and 4" depths, plus an activated-carbon Odor Eliminator line for smells/VOCs (about 3 months service life). Aerostar uses 100% synthetic media across its pleated series; the Series 400 spec notes the media does not rely on electrostatic charge for efficiency. For odor control, Series 550 is a carbon pleat for intermittent issues (MERV 5–6), while facilities that need MERV 13 often select Green Pleat (available in 1", 2", and 4").
If your return takes a nonstandard size, Filterbuy can build a custom filter to the nearest 1/8"—useful for older homes or odd openings. Aerostar offers broad standard sizes and depths across its series; for most homeowners, custom residential sizing is where Filterbuy stands out.
Filterbuy is direct-to-consumer with free continental U.S. shipping on every order and optional Auto-Delivery so replacements arrive on schedule. Aerostar is widely available through wholesalers and retailers; many buyers shop by series and local availability.
Filterbuy filters are manufactured in the USA. Many Aerostar retail listings indicate filters manufactured in the USA by Filtration Group.
Both Filterbuy and Aerostar supply dependable pleated HVAC and furnace filters across common residential ratings. The better choice depends on fit (standard vs custom), buying channel (direct vs distributor/retail), and whether you want carbon options for odors. Whatever you choose, confirm your system can support the MERV level you’re considering, make sure the filter seals properly, and replace it on the schedule recommended by your HVAC manufacturer (many homes change pleated filters about every three months).
Neither is universally better. Both make dependable pleated filters across MERV 8–13. Choose Filterbuy if you want direct shipping, auto-delivery, or a custom size. Choose Aerostar if you prefer buying through distributors/retail and like series-based specs (Series 400, 1100, Green Pleat).
Higher MERV filters can increase resistance. Many systems handle MERV 11 or 13, but you should check your HVAC manual or ask a technician before moving up. If you notice reduced airflow, longer runtimes, or comfort issues after upgrading, step back to the manufacturer-approved rating.
A common guideline for 1" pleated filters is about every 3 months; change sooner if you have pets, smoke, construction dust, or heavy use. Thicker filters (2"–4"+) may last longer—always follow the product guidance and your HVAC manufacturer’s recommendations.
Yes. Activated-carbon media is designed to adsorb odors and some VOCs. Note that carbon pleats often carry a lower MERV than particle-focused pleats. If odor is your main concern, a carbon option can help; if fine particles (e.g., smoke) are the priority and your system allows it, consider MERV 11 or 13.
Filterbuy states its filters are manufactured in the USA. Many Aerostar listings indicate filters manufactured in the USA by Filtration Group. For a specific SKU, verify the packaging or product page.
Filterbuy offers custom sizes to 1/8" increments, which is useful for older returns or odd openings. Aerostar provides wide coverage of standard sizes across its series; for nonstandard dimensions you may need to source via a distributor or choose a brand that fabricates customs.
Often, MERV 11 is a good step up for pet dander and smaller allergens, and MERV 13 targets even finer particles. Just confirm your system can handle the higher resistance before upgrading.
They can, if the added resistance causes the blower to work harder or the filter is left in place too long. Using a compatible MERV, ensuring a tight fit, and replacing on time helps manage airflow and efficiency.
