NCCO1702/1701 Air Filter$24.99 HEPA Filter x 2 for NCCO1702 HEPA Filter x 1 for NCCO1701 *Change HEPA filter in every 6-18 months. Lifetime may vary in different environment NCCO1702/1701 Air Filter quantity Add to cart Categories: b-MOLA Products, RHT Products Related products Add to cart b-MOLA NCCO1702 Air Treatment Unit $579.00 Add to cart b-MOLA BM100 Air Treatment Unit $679.00 Add to cart NCCO1804 Air Filter $17.99