{"title":"28x32x1 Geothermal Compatible HVAC Exact Fit Filters","description":"\u003cp\u003eGeothermal Filters That Actually Fit – Tough MERV 8-13 pleated filters built for WaterFurnace, ClimateMaster, Carrier and more. Stocked in the big, hard-to-find sizes like your 28x32x1 HVAC filters.\u003c\/p\u003e","products":[{"product_id":"28x32x1-geothermal-compatible-hvac-exact-fit-filters-merv-13-12-pack","title":"28x32x1 Geothermal Compatible HVAC Exact Fit Filters – MERV 13 (12 pack)","description":"\u003cp\u003eThis 28 x 32 x 1″ Exact Filters® air filter is manufactured to your exact dimensions, eliminating the guesswork of matching an off-the-shelf filter to a non-standard 28 x 32 x 1″ opening.\u003c\/p\u003e\n\n\u003cp\u003eEven a quarter-inch of gap around a filter can allow a significant percentage of return air to bypass the media entirely, which is why the exact fit matters as much as the filter's efficiency rating.\u003c\/p\u003e\n\n\u003cp\u003eAt MERV 13, this filter removes a significantly larger share of fine particulate from your return air than standard mid-efficiency ratings — including smoke, bacteria-sized particles, and the fine dust that tends to resettle faster after cleaning. Because the media is denser, a properly sized HVAC system matters: check your blower's static-pressure headroom before upgrading.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNominal size: 28 x 32 x 1″\u003c\/li\u003e\n  \u003cli\u003eActual dimensions: 27-7\/8 x 31-7\/8 x 3\/4″\u003c\/li\u003e\n  \u003cli\u003eEfficiency rating: MERV 13\u003c\/li\u003e\n  \u003cli\u003eQuantity: 12 filters per carton\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCommon applications for a 28 x 32 x 1″ custom filter include retrofit installations, legacy HVAC systems installed before standard sizes were codified, built-in return grilles that were framed to non-standard dimensions, and commercial unit housings that don't match any current off-the-shelf size.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMade to your exact 28 x 32 x 1″ specification — no trimming or taping required at installation\u003c\/li\u003e\n  \u003cli\u003eReplace approximately every 90 days in standard installations; shorter intervals in high-dust, smoky, or heavy-use environments\u003c\/li\u003e\n  \u003cli\u003eSold as a 12-pack so you have a full year of replacements on hand\u003c\/li\u003e\n  \u003cli\u003eOrientation arrow printed on the frame to ensure correct airflow direction at install\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:15px;font-weight:bold;color:#1E2D7D;margin:0 0 12px 0;\"\u003eSame 28 x 32 x 1″ size, different efficiency rating\u003c\/p\u003e\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"8\" style=\"border-collapse:separate;margin:18px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/28x32x1-exact-ez-flow-basic-merv-4-filters-12-pack\" style=\"display:block;background-color:#000000;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 28 x 32 x 1″ filter in MERV 1-4\" title=\"See the 28 x 32 x 1″ filter in MERV 1-4\"\u003eMERV 1-4\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eBasic dust-stop\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/28x32x1-geothermal-compatible-hvac-exact-fit-filters-merv-8-12-pack\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 28 x 32 x 1″ filter in MERV 8\" title=\"See the 28 x 32 x 1″ filter in MERV 8\"\u003eMERV 8\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eStandard efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/28x32x1-geothermal-compatible-hvac-exact-fit-filters-merv-11-12-pack\" style=\"display:block;background-color:#6B3FA0;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 28 x 32 x 1″ filter in MERV 11\" title=\"See the 28 x 32 x 1″ filter in MERV 11\"\u003eMERV 11\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eEnhanced efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\" style=\"border-collapse:separate;margin:24px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"background-color:#1E2D7D;border-radius:8px;padding:22px 24px;vertical-align:top;\"\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:18px;font-weight:bold;color:#ffffff;margin:0 0 8px 0;line-height:1.3;\"\u003eNeed 28 x 32 x 2″ or another depth?\u003c\/p\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:14px;color:#ffffff;margin:0 0 16px 0;line-height:1.55;opacity:0.95;\"\u003eThis size is available in other depths we don't stock online — reach out and our team will quote it for you, typically same business day.\u003c\/p\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"10\" border=\"0\" style=\"border-collapse:separate;margin:0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"tel:+18664698556\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eCall 866-469-8556\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"\/pages\/contact-us\" style=\"display:block;background-color:#ffffff;color:#1E2D7D;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eContact us for a quote\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Exact Filters","offers":[{"title":"Default Title","offer_id":44077571407994,"sku":"90013D01999 27 7\/8 x 31 7\/8 x 1 E","price":537.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/ExactM13_1400x1400_9b7dfa71-074e-4629-9b6c-dc2abb529ea7.jpg?v=1749252761"},{"product_id":"28x32x1-geothermal-compatible-hvac-exact-fit-filters-merv-11-12-pack","title":"28x32x1 Geothermal Compatible HVAC Exact Fit Filters – MERV 11 (12 pack)","description":"\u003cp\u003eThis air filter is made to a 28 x 32 x 1″ nominal size for HVAC systems, air handlers, and return grilles that require an exact custom dimension rather than a standard retail size.\u003c\/p\u003e\n\n\u003cp\u003eA properly fitting filter seals against the housing, so all return air is forced through the media instead of leaking around the frame.\u003c\/p\u003e\n\n\u003cp\u003eMERV 11 sits in the sweet spot for \"upgraded\" filtration: substantially better particle capture than MERV 8, without the static-pressure concerns that come with MERV 13 on older or undersized systems. It's the rating we recommend most often to customers asking \"what should I step up to?\"\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNominal size: 28 x 32 x 1″\u003c\/li\u003e\n  \u003cli\u003eActual dimensions: 27-7\/8 x 31-7\/8 x 3\/4″\u003c\/li\u003e\n  \u003cli\u003eEfficiency rating: MERV 11\u003c\/li\u003e\n  \u003cli\u003eQuantity: 12 filters per carton\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCommon applications for a 28 x 32 x 1″ custom filter include retrofit installations, legacy HVAC systems installed before standard sizes were codified, built-in return grilles that were framed to non-standard dimensions, and commercial unit housings that don't match any current off-the-shelf size.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePleated construction (or fiberglass, depending on MERV tier) designed for balanced capture and airflow\u003c\/li\u003e\n  \u003cli\u003eMade to your exact 28 x 32 x 1″ specification — no trimming or taping required at installation\u003c\/li\u003e\n  \u003cli\u003eOrientation arrow printed on the frame to ensure correct airflow direction at install\u003c\/li\u003e\n  \u003cli\u003eCardboard frame with reinforced media for structural stability during handling and installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:15px;font-weight:bold;color:#1E2D7D;margin:0 0 12px 0;\"\u003eSame 28 x 32 x 1″ size, different efficiency rating\u003c\/p\u003e\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"8\" style=\"border-collapse:separate;margin:18px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/28x32x1-exact-ez-flow-basic-merv-4-filters-12-pack\" style=\"display:block;background-color:#000000;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 28 x 32 x 1″ filter in MERV 1-4\" title=\"See the 28 x 32 x 1″ filter in MERV 1-4\"\u003eMERV 1-4\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eBasic dust-stop\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/28x32x1-geothermal-compatible-hvac-exact-fit-filters-merv-8-12-pack\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 28 x 32 x 1″ filter in MERV 8\" title=\"See the 28 x 32 x 1″ filter in MERV 8\"\u003eMERV 8\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eStandard efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width:33.3333%;vertical-align:top;padding:0;\"\u003e\u003ca href=\"\/products\/28x32x1-geothermal-compatible-hvac-exact-fit-filters-merv-13-12-pack\" style=\"display:block;background-color:#C8102E;color:#ffffff;text-decoration:none;padding:14px 12px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:15px;line-height:1.25;text-align:center;box-sizing:border-box;\" aria-label=\"See the 28 x 32 x 1″ filter in MERV 13\" title=\"See the 28 x 32 x 1″ filter in MERV 13\"\u003eMERV 13\u003cspan style=\"display:block;font-weight:normal;font-size:12px;color:#ffffff;opacity:0.9;margin-top:2px;\"\u003eHighest efficiency\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ctable width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\" style=\"border-collapse:separate;margin:24px 0 0 0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"background-color:#1E2D7D;border-radius:8px;padding:22px 24px;vertical-align:top;\"\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:18px;font-weight:bold;color:#ffffff;margin:0 0 8px 0;line-height:1.3;\"\u003eNeed 28 x 32 x 2″ or another depth?\u003c\/p\u003e\n\u003cp style=\"font-family:Arial,Helvetica,sans-serif;font-size:14px;color:#ffffff;margin:0 0 16px 0;line-height:1.55;opacity:0.95;\"\u003eThis size is available in other depths we don't stock online — reach out and our team will quote it for you, typically same business day.\u003c\/p\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"10\" border=\"0\" style=\"border-collapse:separate;margin:0;padding:0;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"tel:+18664698556\" style=\"display:block;background-color:#007B6B;color:#ffffff;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eCall 866-469-8556\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:0;vertical-align:top;\"\u003e\u003ca href=\"\/pages\/contact-us\" style=\"display:block;background-color:#ffffff;color:#1E2D7D;text-decoration:none;padding:14px 22px;border-radius:6px;font-family:Arial,Helvetica,sans-serif;font-weight:bold;font-size:16px;line-height:1.2;text-align:center;box-sizing:border-box;white-space:nowrap;\"\u003eContact us for a quote\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Exact Filters","offers":[{"title":"Default Title","offer_id":44077571473530,"sku":"85655D01999 27 7\/8 x 31 7\/8 x 1 E","price":513.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/ExactM11_1400x1400_adf80bbf-7d68-40ff-b98d-ead334398df5.jpg?v=1749244729"},{"product_id":"28x32x1-geothermal-compatible-hvac-exact-fit-filters-merv-8-12-pack","title":"28x32x1 Geothermal Compatible HVAC Exact Fit Filters – MERV 8 (12 pack)","description":"\u003cp class=\"p1\"\u003eOur \u003cspan class=\"s1\"\u003e\u003cb\u003eGeothermal Compatible HVAC Filters – MERV 8\u003c\/b\u003e\u003c\/span\u003e are designed to provide dependable system protection and consistent airflow for geothermal heat pump systems and high-efficiency HVAC equipment. Built to meet the tighter fit requirements common in geothermal applications from manufacturers such as \u003cspan class=\"s2\"\u003e\u003cb\u003eCarrier\u003c\/b\u003e\u003c\/span\u003e, \u003cspan class=\"s2\"\u003e\u003cb\u003eClimateMaster\u003c\/b\u003e\u003c\/span\u003e, and \u003cspan class=\"s2\"\u003e\u003cb\u003eWaterFurnace\u003c\/b\u003e\u003c\/span\u003e, these filters prioritize proper fit, reduced air bypass, and smooth airflow—key factors for long-running geothermal systems.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eEach filter is manufactured to \u003cspan class=\"s1\"\u003e\u003cb\u003eexact dimensions\u003c\/b\u003e\u003c\/span\u003e, not undersized nominal measurements. For example, a 28x32x1 filter is produced at an actual size of \u003cspan class=\"s1\"\u003e\u003cb\u003e27-7\/8” x 31-7\/8” x 3\/4”\u003c\/b\u003e\u003c\/span\u003e, ensuring a tight seal within the filter rack. This precise fit helps protect sensitive geothermal components by preventing unfiltered air from bypassing the filter.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eWith a \u003cspan class=\"s1\"\u003e\u003cb\u003eMERV 8 rating\u003c\/b\u003e\u003c\/span\u003e, these filters efficiently capture larger airborne particles such as household dust, lint, pollen, and debris while maintaining \u003cspan class=\"s1\"\u003e\u003cb\u003elow airflow resistance\u003c\/b\u003e\u003c\/span\u003e. This makes MERV 8 an excellent choice for geothermal heat pumps and water-source systems that prioritize airflow, efficiency, and long service life.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eDesigned for Geothermal \u0026amp; High-Efficiency Systems\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eCompatible with many systems including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003eGeothermal heat pump systems\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eWater-source heat pumps\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eHigh-efficiency residential HVAC systems\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eLight commercial HVAC applications\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eForced-air heating and cooling systems requiring low-resistance filtration\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eCommon geothermal platforms from Carrier, ClimateMaster, and WaterFurnace\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eKey Features \u0026amp; Benefits\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eExact Fit Manufacturing\u003c\/b\u003e\u003c\/span\u003e – Built to precise dimensions for improved sealing and reduced air bypass\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eMERV 8 Filtration\u003c\/b\u003e\u003c\/span\u003e – Reliable particle capture with minimal impact on airflow\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eLow-Resistance Pleated Media\u003c\/b\u003e\u003c\/span\u003e – Ideal for geothermal systems with long or frequent run cycles\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eRigid, Durable Frame\u003c\/b\u003e\u003c\/span\u003e – Maintains shape and fit under continuous operation\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eSystem-Friendly Performance\u003c\/b\u003e\u003c\/span\u003e – Helps support efficiency and component longevity\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eThese \u003cspan class=\"s1\"\u003e\u003cb\u003egeothermal compatible MERV 8 HVAC filters\u003c\/b\u003e\u003c\/span\u003e are a smart choice for homeowners and facilities using Carrier, ClimateMaster, or WaterFurnace geothermal systems where airflow consistency and system protection are the top priorities.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eNote:\u003c\/b\u003e\u003c\/span\u003e Always verify your system’s required filter dimensions and recommended filtration level. Exact-fit filters are designed to match real HVAC openings rather than rounded nominal sizes.\u003c\/blockquote\u003e","brand":"Exact Filters","offers":[{"title":"Default Title","offer_id":44079562096762,"sku":null,"price":489.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/ExactM8_26aa22b5-8dd9-489c-88b5-84c714e477be.jpg?v=1749229019"}],"url":"https:\/\/www.rememberthefilter.com\/collections\/28x32x1-geothermal-compatible-hvac-exact-fit-filters.oembed","provider":"RememberTheFilter.com","version":"1.0","type":"link"}