What Size Filter Do You Need For A 20,000 Gallon Pool

Download Article

Choosing the correct filter for your pool is not always easy. However, before purchasing your filter, information technology is best to know every detail almost your pool so you lot can buy the best filter possible. Then, you can get out and get a filter so y'all'll take perfectly clean pool h2o to jump into.

Steps

1
Find the surface expanse and the volume of water your puddle tin can concord. Pools come in all types of shapes. Nonetheless, in that location are 2 mutual kinds: rectangular and round. Depending on the one you've purchased, make sure yous've correctly calculated its size with the right mathematical formula.^[1]
- Rectangular pools are by far the well-nigh simple to measure. Simply multiply its length with the width. Surface area = L x Westward
- If you lot opt for a round puddle, perhaps a hot tub or a smaller children's pool, the calculation involves taking the radius of the circle, raising it to the ability of two, then multiplying the product with 3.14. Area = 3.14 x r²
- Measuring your pool's surface expanse yourself works well, but if you just bought your puddle, and then measurements should be provided upon purchase.
2
Notice the pool's maximum book of water. And then, use your pool's volume to find out how much water can movement through your filter in about a minute. This is called ''flow rate''. The menstruum charge per unit differs from the kind of pool you take. Ensure yous calculate with this in mind to get the nearly out of the eventual filter you will utilize.
- To observe your puddle'southward volume, take the maximum volume of water your pool tin concur (this amount tin be found upon purchasing of your pool) and divide it past 360. This will tell you how many gallons of water that goes through your filter in a minute.
- It's best to get a filter that is slightly oversized for your pool to ensure maximum efficiency.
- If the flow rate for the filter is too much and the operation pressures for the filter are too high y'all can increase the pipe size of your plumbing system, in role or in whole, and this volition reduce the operational pressure of your system.
- All filters have a minimum and maximum menses rate that the pump must fall within. Also weak or too much catamenia and the filter will not operate correctly. Brand sure the filter yous get is able to conform for the amount of h2o in your pool.
Advertisement
three
Institute your puddle'southward turnover rate. This ways knowing how long it takes for the h2o to completely cycle through the filter. Almost municipal health codes require a minimum filtration turnover rate of two complete turnovers of the water in a 24 hr period.^[2]
- The minimum turnover rate is one that turns over the unabridged pool once in 12 hours. A turnover charge per unit of 8 or 10 hours is the typical sizing rates for pools today.
- If the pool is for commercial, semi commercial or high bather turnover applications then you volition want to choose a filter that will allow you lot to turn over the unabridged volume of h2o at least four times every 24 hour period.
iv
Choose the right filter. The correct filter size depends on the size of the pool. To maintain proficient water clarity you must run the pump each solar day so that all the water in the puddle is turned over. All filters have gallon per minute design rating and turnover rate.^[3]
- For instance: A 24 feet (7.3 thousand) round above ground pool has approx 13,500 gallons (51,103.ane L). A Hayward S166T Sand Filter has a 10hr turnover rate of xviii,000 gallons (68,137.4 L) and would piece of work well with this pool.
v
Consider how much water resistance there volition be that tin can impact your pool's turnover charge per unit. The faster water moves through the pump, the more than resistance you'll have.^[4]
- Choose a filter that would at a minimum plough your pool over in 10hrs. With filters information technology is okay to go bigger.. Larger filter areas will help to maintain good water clarity.
- Remember that the faster the velocity of water moving through the plumbing system, the more than resistance to flow the h2o has. This means a slower pump like low speed on a ii-speed pump has a menstruum increment per unit of measurement of power on lower speeds versus the loftier-speed option. Annotation that virtually 2 speed pumps set to low speed volition not meet the minimum flow requirements for the filter to function properly.
half dozen
Have all the information gathered about your pool to discover a suitable filter size. By using a simple equation y'all should have no bug. Before putting information technology all together brand certain you lot've correctly calculated the pool's volume (in gallons) and decided on a reasonable turnover rate for all the water to exist cycled through the filter. The equation used in computing filter sizes is:
- Pool capacity in gallons divided past the desired turnover rate in hours.
- This will give you the minimum catamenia needed in gal/m (Gallons per infinitesimal).
- Carve up this number by sixty to get the gal/m.
- Notice a pump that meets the gal/m you just calculated.
Advertisement

Add New Question

Question

What size pool is a Haywood DE 2400 filter used for?

That filter has been discounted and replaced with DE 2420, which is a 24 square foot filter size or 48 GPM or ii,880 GPH rated pool.
Question

I have a circular pool 5.4m and 1.12m deep. Information technology is heated to 35 C, so I would like to run the pump 24 hours. Which size filter practise I need?

First, yous might want to reconsider running a pump 24 hours. It'due south a waste of energy. As for filters, try a 24-inch Sand Filter, or 100 sq ft. Cartridge Filter, or 24-inch D.Eastward Filter.
Question

How often do I need to change the sand?

When you lot find your backwash more than than necessary, you should change information technology. However, if you notice sand in your pool at the outlets, then it is not the sand. You lot accept a cleaved lateral, and must remove the sand to repair; and so you might as well replace sand then besides.
Question

If the purchase receipt describes my filter as 19", what dimension is that?

This is the diameter of the filter tank, typically (if it's a sand filter). To get the area for a filter this size, y'all would desire to apply the formula for the area of a circle with a radius of 19" divided by 2. In this case the surface surface area is approx. 1.24 ft^2.

Ask a Question

200 characters left

Include your electronic mail address to go a message when this question is answered.

Submit

Video

A list of common pool sizes, their respective gallons, a list of popular filter sizes and their ratings volition aid your pick procedure.
Call the manufacturer of your pump and they can assist you with determining the approximate head resistance (ft / lbs) of your plumbing installation. You volition need this information in order to calculate how many gal/m your pump delivers.
Two speed pumps are effective at meeting minimum turnover values while using every bit footling electricity as possible. Try using two filters for maximum efficiency.
The filter that you cull should have a maximum designed catamenia rate approximately xv-xx percent higher than the calculated gal/m that your pool pump supplies.
Virtually older filters are designed for a maximum 30 psi where newer filters are rated maximum operation pressure of 30 psi and maximum full force per unit area of 50 psi.

Thanks for submitting a tip for review!

Advertizement

The pressure within a filter tank is more than than enough to cause extreme harm. Never endeavour to open the filter while under pressure and be sure to accept the filter inspected by a professional should you notice whatever leaks or problems that could be structural.

About This Article

Thanks to all authors for creating a folio that has been read 368,473 times.

Did this commodity help you?