| Lennox Part # X6670 Genuine16x25x5 MERV 11 OEM. Actual Size 15 3/4 x 24 3/4 x 4 3/8. Case of 3 | richmondhillfurnacefilters.ca | 105 CAD | 145 CAD | −27.6% |
| Lennox Part # X6670 Genuine16x25x5 MERV 11 OEM. Actual Size 15 3/4 x 24 3/4 x 4 3/8. Case of 3 | furnacefilters.ca | 120 CAD | 145 CAD | −17.2% |
| Lennox Y6604 Furnace Filter 20x26x5 Healthy Climate MERV 16 PureAir PCO3-20-16. Package of 2. | furnacefilters.ca | 475 CAD | — | — |
| Lennox X6669 Furnace Filter 21x26x4 Healthy Climate MERV 16 for Model HCFPCO20-16, 21" x 26" x 4." Package of 2 | furnacefilters.ca | 465 CAD | — | — |
| Lennox Y6604 Furnace Filter 20x26x5 Healthy Climate MERV 16 PureAir PCO3-20-16. Package of 2. | richmondhillfurnacefilters.ca | 450 CAD | — | — |
| DM900-1003 Complete 2-Year Maintenance for DM900 Hepa Air Cleaner | furnacefilters.ca | 450 CAD | — | — |
| Lennox X6669 Furnace Filter 21x26x4 Healthy Climate MERV 16 for Model HCFPCO20-16, 21" x 26" x 4." Package of 2 | richmondhillfurnacefilters.ca | 444 CAD | — | — |
| W5-0860-3 HEPA filter (2nd stage for newer units). Each | furnacefilters.ca | 400 CAD | — | — |
| Lennox Y6608 Maintenance Kit for PCO3-20-16 PureAir Air Cleaner | furnacefilters.ca | 377 CAD | — | — |
| Lennox Y6616 Maintenance Kit for PCO3-14-16 PureAir Air Cleaner | furnacefilters.ca | 362 CAD | — | — |
| W5-0860 HEPA Filter (for older units). Each | furnacefilters.ca | 360 CAD | — | — |
| Lennox Y6608 Maintenance Kit for PCO3-20-16 PureAir Air Cleaner | richmondhillfurnacefilters.ca | 355 CAD | — | — |
| W5-0860 HEPA Filter (for older units). Each | richmondhillfurnacefilters.ca | 340 CAD | — | — |
| Lennox Y6616 Maintenance Kit for PCO3-14-16 PureAir Air Cleaner | richmondhillfurnacefilters.ca | 340 CAD | — | — |
| Lennox Y6612 Maintenance Kit for PCO3-16-16 PureAir Air Cleaner | furnacefilters.ca | 333 CAD | — | — |
| Lennox X8349 Maintenance Kit for PCO-12C PureAir Air Cleaner | furnacefilters.ca | 329 CAD | — | — |
| YORK / Source 1 Part # S1-AA213 Replacement Media MERV 13. Package of 2 | furnacefilters.ca | 320 CAD | — | — |
| Lennox Y6612 Maintenance Kit for PCO3-16-16 PureAir Air Cleaner | richmondhillfurnacefilters.ca | 312 CAD | — | — |
| YORK / Source 1 Part # S1-AA213 Replacement Media MERV 13. Package of 2 | richmondhillfurnacefilters.ca | 305 CAD | — | — |
| Honeywell Replacement Filter for Carrier GAPCCCAR1625 MERV 15. Package of 2 | furnacefilters.ca | 305 CAD | — | — |
| Lennox X8349 Maintenance Kit for PCO-12C PureAir Air Cleaner | richmondhillfurnacefilters.ca | 299 CAD | — | — |
| Generalaire GF-15-14 Steam Humidifier Cylinder 15-14 for Model RS15 or DS15. Sold Individually | furnacefilters.ca | 295 CAD | — | — |
| Generalaire GF-35-14 Steam Humidifier Cylinder 35-14 for Model RS or DS25/35. Sold Individually | furnacefilters.ca | 295 CAD | — | — |
| Generalaire GF-15-14 Steam Humidifier Cylinder 15-14 for Model RS15 or DS15. Sold Individually | richmondhillfurnacefilters.ca | 285 CAD | — | — |
| Honeywell Replacement Filter for Carrier GAPCCCAR1625 MERV 15. Package of 2 | richmondhillfurnacefilters.ca | 285 CAD | — | — |
| Generalaire GF-35-14 Steam Humidifier Cylinder 35-14 for Model RS or DS25/35. Sold Individually | richmondhillfurnacefilters.ca | 285 CAD | — | — |
| Electro-Air W4-0840 Certified True Hepa Filter for EAHEPA375VSC, CQHEPA375VSC, HEPA 375 VSC. & Electro-Air True HEPA Air Cleaner 450. | furnacefilters.ca | 270 CAD | — | — |
| 90A16NAMO 16" MOULDED HEPA Cartridge Replacement for OLDER UNITS | furnacefilters.ca | 255 CAD | — | — |
| OEM Amaircare 90A16MEET HEPA filter for 16" Easy Twist models - Old part number 90004437/90014437 | furnacefilters.ca | 255 CAD | — | — |
| Electro Air Certified True Hepa Filter Cylinder Part # W4-0840 | furnacefiltersgta.ca | 250 CAD | — | — |
| Electro-Air W3-0840 HEPA Filter | furnacefilters.ca | 250 CAD | — | — |
| Lennox Y6604 Furnace Filter 20x26x5 Healthy Climate MERV 16 PureAir PCO3-20-16. Package of 1 | furnacefilters.ca | 250 CAD | — | — |
| Amaircare 93A16PL02ET / 94004181 / 94014181 Plus Annual Filter Kit for 16" Easy Twist Air Cleaners Plus Annual Filter Kit for Easy Twist Models AWW350/675, 4000 Chem, 6000V, 7500 Cart, 10000ET | furnacefilters.ca | 245 CAD | 162.89 CAD | — |
| Amaircare 16" Plus Annual Filter Kit Part # 95008-5/ 93A16PL02ET | furnacefilters.ca | 245 CAD | — | — |
| Amaircare Plus Annual Filter Kit 93A16PL02ET 16" / 94004181. Kit Includes 1 VOC Canister & 1 Foam PreFilter | furnacefilters.ca | 245 CAD | — | — |
| Amaircare 90A16MEET HEPA filter for 16" Easy Twist models - Old part number 90004437/90014437 | furnacefiltersgta.ca | 235 CAD | — | — |
| Amaircare 93A16PL02ET / 94004181 / 94014181 Plus Annual Filter Kit for 16" Easy Twist Air Cleaners Plus Annual Filter Kit for Easy Twist Models AWW350/675, 4000 Chem, 6000V, 7500 Cart, 10 000ET | gtafilters.ca | 230 CAD | 162.89 CAD | — |
| Amaircare 16" Plus Annual Filter Kit Part # 95008-5/ 93A16PL02ET | furnacefiltersgta.ca | 230 CAD | — | — |
| Lennox Y6604 Furnace Filter 20x26x5 Healthy Climate MERV 16 PureAir PCO3-20-16. Package of 1 | richmondhillfurnacefilters.ca | 230 CAD | — | — |
| Lennox Y6604 Furnace Filter 20x26x5 Healthy Climate MERV 16 PureAir PCO3-20-106. Package of 1 | gtafilters.ca | 230 CAD | — | — |