First-time Berkey setup takes approximately 15 minutes.

1. Wash both stainless steel chambers, the lid, and the spigot with warm soapy water. Rinse thoroughly and dry.
2. Install the spigot on the lower chamber: insert it through the spigot hole, place the rubber washer flat against the inside chamber wall, and hand-tighten the plastic nut on the outside until snug.
3. Prime your filter elements before installing. This is essential. See the priming question below.
4. Insert each primed element stem-first down through the holes in the upper chamber floor. From underneath, slide the rubber washer over the stem until flush against the chamber, then thread and hand-tighten the wing nut. Repeat for each element.
5. Stack the upper chamber onto the lower chamber.
6. Fill the upper chamber with water and allow it to filter completely. Discard this first output. It is a break-in cycle, not dangerous, but might have a slight taste.
7. Perform the red food coloring test before regular use: add one tablespoon of red food coloring per gallon in the upper chamber. If the filtered water in the lower chamber is clear, you are ready.

1. Prime first. Hold the element with the stem end up, place the priming button over the stem opening to create a seal, and press against a running faucet for 30 to 60 seconds until water flows freely from the element's exterior surface.
2. Insert the element stem-first downward through a hole in the upper chamber floor.
3. From underneath, slide the rubber washer over the stem and push it flush against the underside of the chamber floor.
4. Thread the wing nut onto the stem and hand-tighten until firm. Do not use tools, as over-tightening can crack the element stem.
5. Repeat for all elements.
6. Confirm installation with the red food coloring test before first use.

Priming removes trapped air from the microscopic filter pores. New elements arrive dry. Without priming, the system may flow extremely slowly or not at all.

1. Hold the element with the stem end up.
2. Place the priming button (the thicker rubber disc from the element box) over the stem opening to form a water-tight seal.
3. Press the priming button firmly against a running faucet. Water is forced backward through the pores from the inside out, displacing trapped air.
4. Hold for 30 to 60 seconds, or until water flows freely and evenly across the entire exterior surface of the element.
5. Repeat for each element.

Routine Berkey maintenance has three components:

• Monthly chamber cleaning: Wash the lower chamber with warm soapy water, rinse thoroughly, and dry. The upper chamber can be washed the same way as needed. Do not allow soap to contact the filter elements. This is not required but is considered best practice.
• Element cleaning (as needed): When flow rate drops noticeably, scrub the exterior of the elements under running water with a white ScotchBrite pad and re-prime before reinstalling. This is not a scheduled task. Do it when performance tells you to. Typically every 6 to 12 months depending on source water quality.
• Calcium scale removal: In hard water areas, calcium deposits build up on the spigot and inside the chambers over time. Soak affected parts in white vinegar or a 50/50 vinegar-and-water solution for 15 minutes. Wipe with a ScotchBrite pad, wash with soapy water, and rinse. Do not soak the filter elements in vinegar.

For regular cleaning, wash the lower chamber once per month with warm soapy water using a non-abrasive sponge or cloth. Rinse thoroughly. Wash the upper chamber as needed in the same way.

For calcium scale buildup, which is common in hard water areas and visible as white chalky deposits, soak the affected chamber or spigot in white vinegar or a 50/50 vinegar-and-water solution for 15 minutes. Scrub the deposits with a ScotchBrite pad, wash with soapy water, and rinse well.

Do not: use bleach, abrasive cleaners, or steel wool on the stainless steel. Do not allow soap, vinegar, or cleaning agents to contact the filter elements. Remove elements before cleaning the chambers.

No. Slow flow after extended use is caused by sediment and turbidity clogging the micro-pores of the filter elements, not by the elements being worn out. Black Berkey and Phoenix Gravity filter elements are re-cleanable.

1. Remove the elements from the upper chamber.
2. Under running water, gently scrub the exterior surface with a ScotchBrite pad using a circular motion. Scrub each section until you see a bit of black on the pad, then move to the next section. Takes less than a minute per element.
3. Re-prime each element with the priming button.
4. Reinstall and test flow rate. It should return to normal immediately.

PF-2 elements attach to the bottom of your Black Berkey or Phoenix Gravity filter elements, hanging down into the lower chamber. Install them after your main filter elements are already in place.

1. Prime both PF-2 elements before installing. Hold each end of the PF-2 element under running water for no less than 60 seconds per end. This removes process dust from manufacturing. Insufficient priming causes cloudy water and off-taste. Longer priming is better.
2. From inside the lower chamber, thread the PF-2 element onto the stem protruding below the upper chamber floor. Turn clockwise until hand-tight.
3. Repeat for the second element.
4. Run one full break-in fill cycle to waste before drinking filtered water.

Cloudiness and off-taste after PF-2 installation can be caused by insufficient priming. Process dust remaining in the activated alumina media from manufacturing was not fully flushed out before use.

The fix: Remove the PF-2 elements and re-prime each end under running water for no less than 60 seconds per end, or longer if needed. This expels the residual process dust completely. Reinstall and run one break-in cycle to waste before drinking. The issue should resolve fully after thorough priming. If it does not, run full system flushes through the filters. The slow contact of the water should get the remaining dust out, and in very rare occasions this can take up to 8 full system flushes.

Replace based on gallons filtered, not time elapsed:

Time alone is not a reliable indicator. Elements stored dry remain viable for years without degrading. The red food coloring test is the definitive check: if the lower chamber water is tinted red after the test, replace regardless of calculated usage.

Use this five-step formula. It takes two minutes and is valid for the life of your system:

1. Calculate total system capacity: multiply number of elements by the per-element rating (2,750 for Phoenix, 3,000 for Black Berkey). Example: 2 Phoenix elements = 5,500 gallons total.
2. Track weekly refills: count how many times you fill the upper chamber in one week.
3. Calculate weekly usage: multiply refill count by your system's chamber capacity. Big Berkey = 2.25 gal; Royal Berkey = 3.25 gal; Imperial = 4.5 gal; Crown = 6 gal; Travel = 1.5 gal.
4. Divide total capacity by weekly usage to get weeks of life remaining.
5. Write the replacement date on a sticker and attach it to the bottom of your system. (52 weeks per year.)

Already been using your system for a while? Count forward from your original purchase date using the same formula. The math still works.

Replace ceramic filter elements when any of the following occur: the activated carbon inside has been exhausted, the ceramic wall has significantly reduced in diameter after repeated cleaning, or any crack appears in the ceramic. A cracked ceramic element has lost filtration integrity and must be replaced immediately regardless of age or usage.