![]() The Best MERV Rating for Residential HVAC System UseĪccording to the ASHRAE, the best rating for residential HVAC systems is MERV 13. Filters down to particles less than 0.3 microns in size.Controls all of the particulates listed for MERV 1-16 above, in addition to virus carriers, carbon dust, sea salt, combustion smoke, radon progeny, and microscopic allergens.Commonly used for facilities that house pharmaceutical manufacturing, orthopedic surgery rooms, radioactive and carcinogenic materials.Filters down to particles 0.3 to 1 micron in size.Controls all of the contaminants listed for MERV 1-12 above, in addition to bacteria, tobacco smoke, automobile fumes, sneeze particles, insecticide dust, copier ink fumes, pet dander, and cosmetic dust.Commonly used for commercial and residential buildings that require superb air filtration such as general surgery facilities, inpatient care hospitals, etc.Filters down to particles 1 to 3 microns in size.Controls pollen, dust mites, sawdust, textile and carpet fibers, mold spores, general household dust, concrete dust, legionella, lead dust, coal dust, nebulizer and humidifier dust.Commonly used for commercial and residential buildings that require above-average air quality, and hospital laboratories.Filters down to particles 3 to 10 microns in size.Controls pollen, dust mites, sawdust, textile and carpet fibers, mold spores, household dust and lint, and concrete dust.Commonly used for commercial and residential buildings, industrial buildings, and paint booths. ![]() Filters down to particles 10 microns in size.Controls pollen, dust mites, sawdust, and textile and carpet fibers.Commonly used for residential furnaces, window air conditioners, and pre-filtering commercial buildings.To learn more about which MERV rating is best for your filtration needs, consult the following general guidelines: MERV 1-4 RELATED: The Best Air Purifiers for Allergy Relief Understanding the MERV Air Filter Rating List MERV 13-20 is typically found in hospital and general surgery settings. Most residential systems can adequately remove airborne contaminants with a filter rated MERV 7-12. ![]() Some of the common particles that furnace filters are tested for include pollen, dust mites, textile and carpet fibers, mold spores, dust, pet dander, bacteria and tobacco smoke. There is often some processing time before a refund is posted.Refrigerating and Air-Conditioning Engineers (ASHRAE) designed the MERV scale to represent a filter’s worst possible performance at removing particles 0.3 to 10 microns in size (that’s really small!). Then contact your credit card company, it may take some time before your refund is officially posted. If you haven’t received a refund yet, first check your bank account again. We will notify you via email should this become the case. In some cases, we may elect to issue a refund without requiring the return of a product. If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 3 business days. Once your return is received and inspected, you will receive an email notification that the refund has been approved or declined. After the product is returned, you receive a refund. If your return request is approved and requires shipping, then you receive an email with shipping instructions and a return shipping label. Select a return reason and add a note for the store. If your order has more than one item, then select the items that you want to return.Ĥ. In your email account, open the email sent from our store and copy the six-digit verification code included in the email.ģ. Go back to the online store, and then enter a six-digit verification code.Ģ. Click the order that you want to submit the return for.ģ. In the Email field, enter your email address, and then click Continue.Ģ. Submit a return request Click the profile icon in the store's navigation, or go to the refund policy or a returns page, and then request a return.ġ. It must also be in the original packaging. To be eligible for a return, your item must be unused and in the same condition that you received it. Our returns policy covers items delivered within the last 90 days.
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