Since there are two pipes connected to the pool, you want to double this number to 146 GPM. In this case, there is only one pipe connecting to the spa, so you can expect a maximum flow rate of 73 GPM. This system can run in either spa or pool mode, so you’ll want to calculate each of these flow rates separately. Have other exciting add ons, like a spa or a waterfall? Check the diagram below in which all pipes are consistently two inches wide. This number will apply to your overall system. For example, 3.0 inch pipes will have a maximum flow of 160 GPM (gallons per minute) and 2.5 inch pipes will have a maximum flow of 120 GPM, while 2.0 inch pipes will have a max flow of 73 GPM, and 1.5 inch pipes will have a max of just 42 GPM.Īre your intake lines a different width than your pipes leading back to your pool? Measure the maximum flow of the smallest pipes. Once you measure the width of your pipes, check the chart below to determine your maximum flow. Install a powerful pump that’s designed to push through 120 gallons per minute and you have excessive strain on your system-which will lead to expensive wear and tear. Two-inch pipes, for example, will only allow about 73 gallons per minute. The width of your plumbing will determine how many gallons can actually pass through per minute. Calculating the Maximum Flow Rate of Your Pipesįirst thing’s first: check your pipes. The size of both your pool’s plumbing and equipment will determine your maximum flow rate. We’re all working within our physical limitations. Our above-ground recommendation? This Copper Force Above Ground Pool Pump runs at the coolest operation on the market, meaning it’s built to last-and has a lifetime warranty available, so you don’t have to take our word for it. If you think better in graphs, you can also follow the one below. Now that you have your pool size and the turnover rate, find your values in the chart below to determine your minimum flow rate. You just have to multiply the length, width, and depth of your pool in feet, and then multiply that figure by 7.5 to convert the number to gallons. Not sure how many gallons of water your pool contains? It’s simple geometry anyone can do. To determine your minimum flow rate, all you need to understand is your pool size-that is, the number of gallons in your pool-and your desired turnover rate in hours. If you have a heavily-used pool, you’ll want to reduce that turnover rate-but that’s a rare (and less efficient) exception. In case you’re new here, just know that the sweet spot should typically be around eight to ten hours. You might already know a thing or two about turnover time, which is essential information to determine how long to run your pool pump every day. The Black & Decker 3 HP Energy Star Variable-Speed Pump includes a two-year warranty, allows for consistent and quiet filtration, and pays itself off with up to 80% of energy costs saved. Hang in there and you’ll see.Ī powerful pump helps your circulation system step up its game for any additional features, such as a waterfall or a pool heat pump. It’s much more accurate to check the maximum and minimum flow rate of your pool-and simple, too. So while horsepower is an essential consideration when looking for the right pump, let’s table it for a second. Builders are known to embrace the bigger-is-better mentality to land a sale, which often results in a larger horsepower than the pool needs to run efficiently. However, if you simply go by horsepower ratings, you run the risk of oversizing your pump, and thus adding unnecessary strain to your overall system.Īlready have a pump, and wondering if it’s right? Again, horsepower alone won’t do it-especially if your pump was already in place when you bought your house. Pumps are a lot more efficient than they used to be, which is a good thing for many reasons (especially your wallet). No, horsepower alone is not enough-at least not anymore. It might be tempting to cut to a quick answer, but it’s just that-a detraction from your pool’s potential. Sounds good, doesn’t it? So You Want to Check the Horsepower and Be Done, Huh? This is a great opportunity to find a pump specifically tailored for your pool that will offer maximum efficiency-and save in ongoing costs.īy determining your pool’s maximum and minimum flow rate, you’ll be able to choose the pump with the ideal flow rate for you-meaning you’ll set yourself up to never unnecessarily waste time, energy, and money. If yours has gone kaput (or you’re just ready for a fresh unit), no need for a tearful eulogy. Pumps are the heart of your pool’s filtration system, but sometimes their cycle isn’t just water and debris-they also, for better or worse, engage in their own life cycle.
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