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How Big Of Pool Pump Do I Need

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Choosing Your Pool Pump

How To: Size A Pool Pump

Now that all of the calculations have been completed, you are ready to find the right size pool pump for your pool. To recap, the two pieces of information you want to have with you is your turnover rate and your feet of head. Having your pool dimensions, and other info along for the ride is not a bad idea, but those two numbers are important for choosing the right size. If you are working with a salesperson, they will ask you for them.

When choosing the right pump, you want to look at horsepower. Most manufacturers will have a section on the packaging, or the manual inside, that gives a chart of what HP you will need based on your turnover and head. If you remember, you want to aim for an eight-hour turnover if possible.

Many homeowners opt for a bigger with more HP so they can reduce their filtration time. While that is okay, it can be expensive. The more HP your pump has, the more costly it will be to run. On the other hand, you want to make sure you have enough HP to clean the entire pool in the eight-hour window.

If you are concerned about energy costs, keep this in mind: It is more cost-efficient to run a lower horse-powered pump for a longer time, then to run a higher horse-powered unit for a shorter amount of time.

Once you have your HP worked out, check out some other features such as energy-efficiency, speed control, motor type, and smart features. There are many options to choose from depending on your lifestyle, pools, and personal taste.

Time To Purchase An Above Ground Pool

Now that you know the answer to What size above ground pool pump do I need?, are you ready to buy a new above ground pool? If so, check out our selection for the best above ground pools on the market. Once the ground has been leveled and your above ground pool is installed and filled with water, be sure to check out our picks for accessories. Must-buy add-ons include the best above ground pool lights and solar-powered pool heaters to heat your above ground pool. Or if winter swimming doesnt appeal, learn how to winterize your above ground poolso its ready to go next spring!

Above Ground Pool Pump

Check The Plumbing Flow Rate

Generally, the velocity of the water through the piping shouldnt exceed 7 feet per second. Count the intake lines as that will determine what the maximum flow into the pump will be. Its also important to make sure the lines going back into the pool will support the same level of flow.

Bottom Line

By following the steps mentioned above, you can now answer the question: what size pump do I need for my pool. It also helps to note that the GPM of your pump will directly relate to the filters GPM. You will want to reduce any additional strain on your pump motor by making sure the filters GPM is higher than your pumps GPM. Contact your local professional for additional assistance or questions.

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Size And Selection Of Swimming Pool Pumps

Youve come to the mountain top, seeking wisdom and truth, or the answer to a question that has plagued humanity for all timeWhat is the best pool pump?

The first thing you need to know is that not all horsepowers are equal. Every pump has different flow characteristics, and the flow rate will vary by manufacturer and model.

But the question cannot be answered without some other key insights, namely your Pool Type, Turnover Rate, Filter Design Flow Rate and estimated Resistance, in Feet of Head.

Calculate The Maximum Flow Rate

Intex Above Ground Pool Pumps

Next, you need to figure out the maximum flow rate for your swimming pool. The maximum flow rate is determined by the size of the pipes. 3-inch pipes can handle 150 gallons per minute 2-inch pipes can take 73 gallons per minute, and 1.5-inch pipes can handle 45 gallons per minute.

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Hayward W3sp2303vsp Maxflo Pool Pump

One of the most energy efficient units available, this pump from Hayward is made for you if youre looking to reduce your energy costs. It includes a large strainer basket, making it easy to clean, and it can be installed on a variety of pools. You can install it on systems and set it in stand-alone mode or you can connect it to competitive control systems to really take control of your pools filtration systems.

What If My Pool Pump Is Too Big

Too large of a pump can cause poor filter performance and even damage it, if the filter is not also oversized accordingly. Another possible consequence is pump cavitation in which bubbles form in the water inside the pump and then burst with great force, resulting in damage to the impeller and other internal parts.

Considering this, can I use a bigger pool pump?

There are situations where a larger pump is certainly warranted. For instance, a pool with water features tied into the main pool pump might require a higher horsepower to provide enough flow.

Additionally, how big should my pool pump be? What you’re looking for is a pump that will be able to pump all the water in your pool through the filter in no more than 8-10 hours. This typically looks likes 40 GPM for smaller pools and 80 GPM for larger pools.

Beside above, should pool pump run continuously?

Although it’s generally recommended that all the pool water undergo filtration every 24 hours, the pump does not need to run all the time. If your pool is in constant use, you may need to run the pump for up to eight hours per day, frequently checking the water clarity and chemical balance.

What size pool pump do I need for a 15000 gallon pool?

We have a pool that holds 15,000 gallons of water. 15,000 gallons × 2 turnovers/day = 30,000 gallons/day. We need to circulate 30,000 gallons of water every 24 hours – but remember, a pump has specifications of Gallons Per Minute

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The Importance Of Proper Pool Pump Sizing

What size pump do I need for my above ground pool? This is another question most pool owners have. It may be easy to pick just the one with the highest GPM or GPH, but that should never be the case.

Like with pool heater sizing, choosing the right pool pump size is crucial to ensuring peak performance. When the power is less than what you need, it will be ineffective in keeping the water moving, which can increase the chances of growth of bacteria. This can also make the above ground pool hygienic. When the water is stagnant as a result of having a weak pump, there can also be chemical imbalances. Because of this, you might find the need to often lower or increase pH levels in pools.

On the other hand, when you choose a pump that is too big for your pool, this will result in unnecessarily wasting energy. This can also negatively impact the pool filters performance and increase wear.

Can A Pool Pump Be Too Big

What size pump will I need?

Too large of a pump can cause poor filter performance and even damage it, if the filter is not also oversized accordingly. Another possible consequence is pump cavitation in which bubbles form in the water inside the pump and then burst with great force, resulting in damage to the impeller and other internal parts.

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Gallons Per Hour Of Filtration

Also very important: Pick a filter capable of filtering an amount of water every hour of operation that suits your saltwater pool size and the amount of time you will run your pump. So if you have a pool with 20,000 gallons and will run your pump 10 hours per day, you need a filter that can filter 2,000 gallons per day .

How Much Should You Spend On A Saltwater Pools Sand Filter

The thing that makes it very convenient is that you can choose any sand filter for a seawater pool, since in principle, in addition to the size and volume of the pool, you do not need to consider other characteristics. Usually, from 300 to 1000 US dollars are spent on a sand filter if we consider the size of the pool and the installation fee.

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Size Really Does Matter

As with all pool heaters, if you go big, youre golden.

A smaller pool heater pump size wont necessarily be detrimental, but youll have to run it longer and may have problems keeping the pool warm.

Using the chart or calculation method above, you can figure out the minimum heat pump size your pool requires, and if you want, you can go bigger for faster heat times.

The Pump Fails To Pull Water

Pentair Clean and Clear Filter System Complete EC ...

When water isnt being pulled in to the pump, it cant reach the filter and pass through the system properly. The first thing to look for is a clog in the system.

First, check the skimmer and the pump baskets to make sure theyre not clogged. Next, check the impeller for debris impeding its movement. Open up the pump and clear away any debris.

Another potential cause can be an air leak in the suction line. Since air has less mass than water, the pump will suck in air instead of water. Check the lines for leaks and patch up any you find.

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Upfront Budget Vs Over Time

Another thing, you need to think about how much investment you have to spend upfront against time. While making your sizing, you also need to ensure you have the ideal space to install your sand filter. It can be quite frustrating to buy a model that doesnt fit in your preserved area. Still, on that, the installation base needs to be enough to support your pool sand filter.


All ready now! I hope youre prepared to head out there and buy a pool sand filter now. With all the information I have given you here, you should now be able to settle on an ideal sand filter for your above ground pool. You need a device that is enough to keep your pool clean and safe all the time. Even though it can cost you more upfront, its better you pick a larger, more powerful pool sand filter for a start. But with that no need to worry of replacement soon.

Do You Need A Pool Cover Pump

Youve probably closed your inground pool by now, or you will very soon. If you have a standard winter pool cover, you probably need a pool cover pump. Solid pool covers will collect rainwater and snowmelt, leaving you with standing water in the middle of the cover. That might not sound like a big deal, but it can be a safety issue.

Rainwater is heavy. Just 1 of rain on a square foot of land or pool cover weighs 5.2 lbs.. That means if your pool cover has a surface of approximately 288 sq. ft. , one inch of rain can leave you with 1497 pounds, or ¾ of a ton of water weighing down your pool cover! Some of it may drain away from around the edges. But much of it will flow toward the center of the pool cover.

The weight of standing water can damage your winter pool cover, and pull it away from the edges of the pool. This leaves a gap that allows debris, a pet, or even a small child to get into your pool.

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What Size Of Pool Heater Do You Need

Pool heaters allow you to open your pool earlier in the spring, and extend the swimming season well into the fall, but they are a large investment, so before running out to buy a pool heater you should spend a little bit of time doing research.

If you dont choose the size of your pool heater careful you could end up spending a lot of time and money down the line.

What you need to consider

Before buying a pool heater there are five basic things that you need to determine:

  • The size of your pool
  • Your heating needs and preferences
  • BTU requirements
  • Whether or not you use a solar cover
  • Environmental considerations.

1) Size of your pool

The larger your pool, the more powerful your heater will need to be, so that means you need to calculate the volume of your pool. To do this, youll have to first find the surface area and then multiply that by the average depth.

To find the surface area:

  • Square and rectangular pools: simple multiply length by width
  • L-shaped pools: break the pool into two rectangles and multiply length and width of each and add the two answers together
  • Round pools multiply the diameter by the diameter and then multiply the answer by pi
  • Oval pools multiply the longest diameter by the shortest diameter for surface area
  • Kidney shaped pools add the longest width and shortest width, and multiply that by the length

For all shapes of pool:

2) Your needs and preferences

3) Know your BTUs

Pool heaters measure their power in BTU .

BTU Needed to raise temperature


What Does A Pool Pump Do

How do I choose the right size pump and filter for my above ground pool?

An above-ground pool pump has one very important job: move the water in the pool through the filter. Think of it as the heart of your pool. The pump circulates the water, cycling it through the filtration system where dirt and debris are removed. The filter is also where the water is sanitized and the chemical reactions that keep your pool water safe take place. Without a pump, the water wouldnt be able to travel through the filter and stay clean and safe.

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I Have The Volume Now What How Do I Determine Which Pump Is For Me

Now that you have the volume, its just a matter of selecting the right pump with the right flow rate. The best way to explain that would be to do an example. Lets use the first pool that we calculated the volume for.

Pool Volume = 65,947.5

Now, as a rule of thumb, we would want all of the pool water to be circulated within 6-8 hours, so lets use 6 hours as a baseline.

Divide the pool volume by the number of hours that you would want the pump to be running, so that would be 65,947.5 divided by 6.

This would give you 10,991 which means your pump should be able to turn around this much water in 6 hours. Since most pumps here in Australia are rated for Liters per minute, lets divide that number by 60 to get how much water needs to be pumped per minute. So we have 10,991 divided by 60, which is 183.

To circulate all of the water in 6 hours, we would need to have a pump thats rated at least 183 liters per minute. The closest pump we can get to hitting that mark is the Water TechniX Pump Alpha 1.0hp. This pump can churn out 210 liters every minute. Remember, when choosing a pump, choose one thats closest the required number of liters per minute, rounding up. This would give your pump enough extra power to compensate for dirt, filters, piping and other factors that will ultimately affect the flow rate of your pump.

Filter Sizing And Flow Rates

There are three common pool filter typessand, cartridge and Diatomaceous Earth . All three of these pool filter types will keep your pool and spa clean, but you should consider the needs of your specific application, your other equipment and plumbing size before making a selection.

When choosing a filter type and size, we recommend enlisting the help of a pool professional to ensure the proper products are selected for your pool. Our pool pros will take into consideration the weather conditions in your area, the types of debris that can land in your pool, and they will also evaluate your entire application how many gallons your pool has, your plumbing size and the needs of and types of other pool equipment you have.

Tip: An undersized pool filter will render it ineffective and lessen its life the larger the filter, the longer the time between cleanings.

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What Size Above Ground Pool Pump Do I Need

Swimming pool pumps are essential for keeping your pool water fresh and clean. To make sure youre swimming in the highest quality water possible, you need to use the right pump. Some think that upgrading to a larger pump will mean cleaner water, but thats not always the case. Sometimes, a larger pump is less effective and can end up costing a lot more in operating costs. If youre wondering What size above ground pool pump do I need?, youve come to the right place.

Below well explain everything you need to know to choose the right size above ground pool pump.

What Size Variable Pool Pump Does A 22000

How to Choose the Best Pool Pump

Bigger is not better when it comes to pool pumps. An oversized pool pump can cause premature equipment failure, while an undersized one won’t do the job. Pool pumps must cycle all the pool’s water in roughly eight hours. A variable pool pump provides homeowners with an efficient, energy-saving choice because it operates at different speeds, drawing less energy overall. When calculating minimum and maximum flow rates with feet of head for a 22,000-gallon pool, you need a variable speed pool pump rated between 1 and 1 1/2 horsepower with a 46 gallons-per-minute minimum flow rate.

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