Frigidaire PureSource Ultra Refrigerator Water Filter For Frigidaire ULTRAWF

The part number is almost always printed on the filter cartridge itself. Pull the existing filter out (twist or push-release, depending on model) and look for codes like MWF, LT700P, WF3CB, EPTWFU01, HAFCIN, or EveryDrop Filter 1.

If the cartridge isn't labeled, check inside the filter housing or your refrigerator's owner's manual. Still stuck? Contact us with your refrigerator's brand and model number and we'll match the right cartridge for you.

OEM cartridges — Frigidaire PureSource, Whirlpool EveryDrop®, GE MWF, Samsung HAFCIN, etc. — are produced by the original equipment manufacturer of your refrigerator. EarthSmart compatible cartridges fit the exact same housings, use NSF-tested filtration media, and typically cost less per replacement.

Both are valid replacement options — the choice usually comes down to budget and brand preference. Our OEM-to-EarthSmart compatibility chart shows which compatible cartridge fits each OEM part number.

Refrigerator filters fit by part number, not by refrigerator model number. As long as your existing cartridge matches the OEM part number listed on this product page (or the EarthSmart equivalent), it will fit. If you're unsure, contact us with your refrigerator's brand and model number, or the part number on your existing cartridge, and we'll confirm compatibility before you order.

Most manufacturers recommend replacing a refrigerator water filter every six months, or sooner if you notice a drop in dispenser flow rate, slower ice production, or a change in taste. Households on well water, with heavier sediment, or that drink/dispense large volumes daily may need to replace more frequently — sometimes every three to four months.

If your refrigerator has a filter status indicator light, replace when it turns red or amber. The light tracks elapsed time and water volume; it's a useful reminder, not a hard rule.

Most refrigerator filters install in under a minute — either a quarter-turn (most GE, Frigidaire, and Samsung models) or push-and-click (most Whirlpool, KitchenAid, Maytag, and LG models). After installing, run about 2–4 gallons of water through the dispenser to flush trapped carbon dust before drinking. The water may run cloudy or dark for the first few cups; that's normal and clears quickly.

To reset the filter indicator, press and hold the filter reset button on your refrigerator's control panel for 3–5 seconds until the light changes from red to green. Specific button labels and reset procedures vary by brand — the owner's manual has the exact steps for your model.

Standard refrigerator water filters use activated carbon to reduce chlorine taste and odor, sediment, and certain particulates — tested to NSF/ANSI 42. Higher-tier cartridges add reduction claims for lead, cysts, mercury, and select pharmaceuticals under NSF/ANSI 53 and NSF/ANSI 401. The exact contaminants reduced depend on the filter model.

Refrigerator water filters are not a substitute for a whole-house filtration system or reverse osmosis — they're point-of-use cartridges sized for the volume of water your fridge dispenses. Check the product description above for this filter's specific NSF claims.

Yes — refrigerator filters work with well water, but they're sized for the contaminant load of municipal water. If your well water has heavy sediment, iron, sulfur, or untreated bacteria, the cartridge will clog faster and you'll need to replace more often (every 3–4 months instead of 6).

For severe well water issues, the right answer is a whole-house pre-filter or sediment filter upstream of the fridge — not a more aggressive refrigerator cartridge. The fridge filter is the last stage, not the first.

Many newer refrigerators include a small produce-keeper or freshness air filter inside the fresh-food compartment, separate from the water filter. It reduces ethylene gas and food odors so produce stays crisp longer. Common examples: LG LT120F (EarthSmart AF-2), and the combo kits sold for Frigidaire/Electrolux refrigerators.

Replace the air filter every six months — either alongside the water filter or on its own schedule. Combo kits make it easier to remember by shipping both cartridges together.

Stocked refrigerator filters ship within 1–2 business days from the warehouse nearest to your shipping address. Most orders arrive in 2–5 business days via UPS, FedEx, or USPS depending on the destination and order weight.

Current shipping timelines are always live on our production schedule page.

We ship to Alaska and Hawaii — rates are calculated at checkout based on the address. Free shipping on orders $50+ applies to the lower 48 contiguous states only; AK and HI orders ship at carrier rates.

Refrigerator filters are small enough that PO box delivery is usually possible via USPS — but on multi-pack or combo-kit orders, we may need to route via UPS/FedEx, which won't deliver to PO boxes. A street address is always the safer option.

Yes — unopened refrigerator filters in original packaging can be returned within 30 days under our refund policy. Once a cartridge has been removed from its sealed packaging, it can't be returned for sanitary reasons (the carbon media absorbs ambient odors and moisture).

If a filter arrives damaged, leaks during installation, or doesn't match what was ordered, submit a claim and we'll replace it — no back-and-forth.

Most refrigerator filters ship on recurring delivery at a 10% discount. The default cadence is every 6 months — matching the standard replacement interval — with options for every 3, 4, or 12 months. Pick the interval that matches your fridge usage on the product page, and we'll auto-ship on time with no reordering required.

You're only charged when an order ships, and the discount applies to every delivery — not just the first one.

Yes, any time. Pause, skip a delivery, change the cadence, swap the cartridge, update the shipping address, or cancel entirely — all from your account dashboard. No emails required, no hold times, no cancellation fees. See our subscription policy for the full details.

Yes — bulk and volume pricing is available for property managers, multifamily owners, hospitality groups, healthcare facilities, schools, and government accounts replacing fridge filters across multiple units. We work on negotiated pricing with recurring orders timed to your replacement schedule.

Request a quote with the cartridge model(s), unit count, and replacement frequency, or visit our Commercial Services page to see the full commercial lineup.

Yes. We work with schools, government agencies, non-profits, and resale-exempt buyers regularly. Submit your certificate through our tax-exempt purchases page and we'll set up your account so future orders ship tax-free with no repeated paperwork. We support purchase orders, net terms, W-9s, COIs, vendor registration, and Section 889 / NDAA-compliant procurement for established accounts.

Under the Magnuson-Moss Warranty Act in the United States, a manufacturer cannot void your refrigerator warranty solely for using a compatible replacement filter that fits properly and meets the same standards as the OEM cartridge. EarthSmart compatible cartridges are designed to fit the same housings as the OEM filter and use NSF-tested filtration media.

If you have specific concerns about your manufacturer's warranty terms, we always recommend reviewing them directly — or call us and we'll talk you through the OEM and compatible options for your model.

Call 866-469-8556 Monday–Friday, 6 AM – 5 PM PST. Text 425-515-2727 anytime — we reply next business day. Email support@rememberthefilter.com for written support, including OEM-vs-compatible questions, bulk orders, and order status.

Full options — including claims, price match, and quote requests — live on our contact page.