Calculate The Total Dynamic Head
Now that we have the flow rate , we need to calculate the TDH in metres to determine the performance of the pump needed to turn over the water. TDH refers to the total equivalent height that fluid will be pumped by taking into consideration any friction losses in the pipe. Essentially dynamic head is the measurement of resistance working against your pool pump as it pulls water from your basin and pushes it back to the pool. Most inground pools will be somewhere around 15 metres TDH. Above ground pools typically fall around 9 metres TDH.
Head Loss – Pipe = 3.80 + Head Loss – Valves & Fittings = 6.20 = 10 Total Dynamic Head
Now that you know the Total Dynamic Head and the flow rate , you can use this information to find the size of pump you will need to efficiently turn over your pool.
Intex 28633eg Krystal Clear Cartridge Filter Pump
If youre an Intex owner looking for a cartridge filter, this is for you. Unlike other options, this filter uses disposable cartridges. Maintenance is as convenient as turning the handy flush valve and popping in a new cartridge.
At the end of the season, dismantle and store it with your pool. If your weather is mild, its double-walled construction means you can just leave it up with no worries.
Choose The Largest Filter
For the least maintenance, choose the largest filter that your pool and pump can accommodate. A larger filter will clean the pool water better, clog less often, and require less work on your part.
Need Help Choosing a Pool Pump and Filter?
If you need help selecting the best pool pump and filter system for your swimming pool, call Emerald Pools and Spas. Our professionals will help you select all the equipment you need for your swimming pool. In addition, we also offer repair services, pool remodeling, custom pool construction, equipment installation, and everything you need to operate your pool. Contact Emerald Pools and Spas today to find the best pump and filter system for you and more of our services!
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Green & Energy Efficient:
There are ways to get the most gallons per minute from your pool pump with the least horse power motor. Increasing the PVC pipe size from 1-1/2″ to 2″ will increase any pumps GPM. Other options to make your pool pump more efficient are:
For more on Pumps, like the difference between single, two or variable speeds, try this article!
Additional resources for your pool buying journey:
How Do You Size An Above Ground Pool Filter
Step 1 Measure the Size of Your Pool
You then need to calculate the number of gallons of water in your pool. Do this by multiplying the total volume of your pool times 7.48, the amount of water in a cubic foot of space. For a 24-foot diameter pool with a center depth of 48 inches, the pool holds about 14,000 gallons.
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What Type Of Pool Filter Is Best
The three main types of Pool Filters are: Sand, Cartridge and Diatomaceous Earth . The most popular, and affordable, is the sand filter. The biggest difference between sand and other filters, is that sand filters dont filter out as small debris as cartridge and D.E. filters. To learn more about the differences in pool filter options, check out our helpful article: Pool Filter Comparison Guide.
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 The Heck Is A Micron
Pool filters measure the size of contaminants theyre capable of removing in microns. Its short for micrometer, which is one millionth of a meter.
Having trouble picturing just how small that is? A single strand of human hair is about 50 microns, or about .05 millimeters in diameter. Some bacteria measures about 2 microns, or about .002 millimeters in diameter.
Whether theyve been killed by chlorine or not, bacteria and other contaminants can only be filtered out if the filter mediathe material that actually does the filteringis fine enough to collect those teeny, tiny particles.
Picking The Best Filter Size For Your Pool
Ive never understood why people buy the biggest pump they can afford, and then go small on the pool filter. I call it the V-8 mentality. They want the biggest engine, in the smallest car.
To save you time in your valuable day, Ill give you the moral of the story upfront. The main point of this post is to GO BIG.
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Pool Filterswork Together With Pool Pumps
Bigger is not always better when it comes to pool pumps. A pool pump that is too large can hinder filtration and can even damage a pools filter and/or heater. It is therefore very important to know the size of a pool before purchasing a pool pump. If there is additional equipment installed into the pool, it will have to be taken it into account when deciding what size pump is going to be purchased. The more equipment is installed into a pool, the more powerful the pump needs to be.
It is important to consult with a pool equipment expert, such as Speck Pumps, before buying a pool pump. The team at Speck Pumps will be able to give our customers professional advice regarding the size of the pump they will need to purchase.
What Kind Of Pool Filter Is Best
BEST OVERALL: Hayward DE6020 ProGrid D.E. Pool Filter. BEST BANG FOR THE BUCK: XtremepowerUS 19 Above Inground Pool Sand Filter. BEST CARTRIDGE: Pentair 160332 Clean and Clear Pool Filter Cartridge. BEST SAND: Hayward ProSeries Pool Sand Filter. BEST ABOVE-GROUND: Carvin Laser 22.5 Inch Above Ground Pool Sand Filter.
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Selecting The Best Filter For Your Pool Is Found In The Equations
Upated for 2018. A good filtration system for a pool or spa depends on your ability to properly size and select the filter.
To accomplish that, you must calculate the vessels volume, capacity and flow rates, and some other key factors including the type of pump. After all, the filter fits into the equipment sequence after the pump, so regardless of whether youre replacing an old filter or installing a filter on a brand-new pool or spa, youll need to match the filter to the pump and the size of the vessel. Below is a step-by-step guide that explains how to correctly assess filtration needs.
Video Answer: Pool Filter Comparison Filter Types
- How to replace a swimming pool cartridge filter is very easy. First be sure your filter has about 2000 filter hours on it. Do not count “swimming seasons” or “years”. It must be filter hours. The pleats can get worn down. Filbur & Unicel make great replacement cartridges. This model was Unicel.
No matter what kind of filter you have, it only works if water moves through it. That’s how the filter is able to capture debris and bacteria. To keep all the water in the pool clean and clear, it must run through the filter system at least once a day. This is called the turnover rate.
- Another rule of thumb is to buy 1.5 sq ft of filter area per 10,000 gallons of pool water. The 3.1 sq ft sand filter is the standard size for most inground pools. Larger pools, , should use a 4.9 sq ft. sand filter .
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Water Volume And Time
This is a very popular method for measuring pool heater size, it takes the volume of the pool in gallons and also factors in loss from surface through evaporation.
First, we need to know how many BTUs it takes to heat one gallon of water. One gallon of water weighs 8.34 pounds, and we know that a single BTU is the amount of heat energy required to raise the temperature of 1 pounds of water by 1 degree. So, to heat 8.34 pounds of water we need 8.34 BTUs, which is the amount of heat energy needed to raise the temperature of one gallon of water by 1 degree. Now, we need to calculate the number of gallons in our swimming pool which measures 40 x 30 x 6. The volume is 7200 cubic feet, and when converted to gallons it is 7200 x 7.48 = 53,860 gallons.
We need 8.34 BTUs of heat to raise the temperature of one gallon by 1 degree. Taking our example of a swimming pool in Detroit during September, we need to go from a temperature of 65°F to 80°F which is a 15 degree rise. So, we need 15 x 8.34 = 125.1 BTUs per gallon of water for a 15 degree rise in temperature. Now accounting for the entire volume of our pool, the total heat energy required is 125.1 x 53860 = 6,737,886 BTUs. Thats a whole lot of heat energy, right? Clearly there is no company on Earth which will sell you a 7 million BTU/hr. pool heater. So, lets do this over a 48- hour period which sounds reasonable- 6,737,886 BTU spread across 48 hours is 140,372 BTU per hour.
The importance of solar blankets for your pool
How Big Of Sand Filter Do I Need
Keeping this in view, how do I know what size pool filter I need?
The equation used in calculating filter sizes is:
Beside above, what size is my sand filter? To come up with this flow rate first divide your calculated gallons by 8 for Gallons Per Hour . Then divide that number by 60 to get Gallons Per Minute . For our example of 20,000 gallons that’s: 20,000 / 8 hours or 2,500 GPH divided by 60 mins/hour or 42 GPM.
Correspondingly, what size sand filter do I need for my above ground pool?
When choosing a pool filter for your above ground pool, a helpful tip is to choose one that is at least 1 sq. ft per 10,000 gallons pool capacity. For example: the ClearWater 16Sand Filter System has a 1.55 sq. ft filtration area, making it perfect for a 15,000 gallon pool.
What size sand filter do I need for a 30000 gallon pool?
Filter Sizing Chart #2
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Sizing The Pump For Your Swimming Pool
You might think bigger is better in terms of pump size, but a pump that is too big can cause serious problems.
The first step in sizing your pool is to know the volume of water in your pool, which is the average depth:
Calculation – Example
Measure the shallow end depth. – 4 feet
Measure the deep end depth. – 12 feet
Add them together. – 16 feet
Divide by two. – 16 ÷ 2 = 8 feet
In the example above, the pool’s average depth is 8 feet.
Now use the formulas below to determine the volume of water in your pool.
- Circular Pools: Diameter x Diameter x Average Depth x 5.9 = Total pool capacity in gallons
- Oval Pools: Length x Width x Average Depth x 6.7 = Total pool capacity in gallons
- Rectangular Pools: Length x Width x Average Depth x 7.5 = Total pool capacity in gallons
Once you know the volume of water in your pool, youre ready to calculate the flow rate and turnover required to circulate the water in the number of hours you want.
What If I Have A 15000
When choosing a pool pump, you have to select the most efficient one to save energy. Typically these work with a GPM unit, which means gallons per minute.
Since you have to save on energy, you cannot run it for 24 hours. On average, pool experts recommend running your pool pump for at least eight to twelve hours a day. So, if you have a smaller pool, you would look for one running at a rate of 40GPM. On the other hand, if you have a large-sized pool, you would look for a one running at a rate of 80 GPM. But if you desire to find the most accurate one for your pool, see the below steps.
The result is the number of gallons needed to get pumped for the whole pool to become clean in eight hours.
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What Size Pump Do I Need For My Pool
A common question we get from our customers is What size pump do I need for my pool? As a general rule, you should choose a pool pump that filters all water in your pool in an eight hour period. Its important that you dont buy a pump bigger than your pool needs because it leads to higher operating costs and overpowering your filter system.
The standard hours a pool pump should take for total water circulation varies. The following turnover times for residential pools are accepted in the pool industry:
Indoor pools 4 hours
Calculate Maximum Flow Rate
The size of your pools pipes determines the maximum flow rate.
Count the number of intake lines for your pool and refer to the common pipe sizes below:
- For each 1.5-inch intake line, the maximum flow rate is 42 GPM.
- For each 2-inch intake line, the maximum flow rate is 73 GPM.
Example: Two 1.5-inch intake lines = 84. The maximum flow rate is 84 GPM.
This number is important because your pool filter has a maximum flow rate, which is measured in GPM. The pool pump’s GPM rating should be below the pool filter’s maximum flow GPM rating.
If the pool’s turnover rate is higher than the filter’s maximum GPM, the filter is undersized and will not work properly. If the filter is undersized, it should be replaced, or the pump should be undersized to prevent damage to the filter.
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Do You Like To Swim Laps
If your main goal in getting a new pool is exercise, a lap pool might be the perfect choice for you. Lap pools are also great for smaller backyards because they can be built longer and skinnier than a traditional, rectangular pool.
If you need your new pool to pull double-duty, a medium-sized rectangular pool that could accommodate a handful of family and friends as well as give you a charming exercise place could be the perfect solution.
What Restraints Currently Exist
Lets cover physical restraints first. How much space is readily available in your backyard? Where are the property lines? Are there landscaping features that you want to keep? If so, your pool will either have to be sized accordingly or be shaped to go around that feature. Dont forget that ever so important patio space as youll want decking all the way around the perimeter of your pool.Next, the most vast non-physical restraint- cost. Size is one of the largest factors in the cost of a pool and therefore your budget may help to narrow down the potential size options.
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What Size Pump Should I Get For My Pool
If you’re looking to build a new pool or simply looking to replace a pool pump you may find yourself asking, “Is a larger horsepower pool pump always better?”
PRO TIP: No matter which type of pump you choose, youll want to make sure you properly select the correct pump and filter combination. The pump needs to be sized appropriately compared to the filters flow rate. Choosing a pump with a higher flow rate than the filter will put strain on both the pump and filter, reducing life and efficiency of each. This means that you would not want to choose a pump designed to be used with 2″ plumbing piece, and then use a filter designed to be used with 1 1/2″ plumbing piece. Proper pairing of these two units is essential for a pleasant pool experience.
If choosing a pump with a 1-1/2 inlet/outlet, you should choose a filter with a 1-1/2 inlet/outlet as well. However, a pump with a 1-1/2 inlet/outlet can work with a filter with a 2 inlet/outlet if needed to.
X You would not want to attempt to use a pump with 2 inlet/outlet with a filter that has a 1-1/2 inlet/outlet as they would not be sized correctly or efficient when used together.
You can also learn more about Single Speed and Variable Speed Pumps Here!