Swimming Pool and Spa Pumps - Correct Sizing Techniques

Your swimming pool or spa pump has pumped its last gallon of water and it looks like it's time to purchase a new one. Since more horsepower is always better, it certainly would be a good idea to purchase a more powerful pump. Wrong! Use caution when deciding to install a new pump if you are going to increase the horsepower of the unit.

First, review the gallon per minute flow chart of the pump you are considering. Most equipment manufactures provide flow specifications of each one they manufacture. How much water flow does the unit you are considering produce? Next, review your existing filter characteristics, again, most manufactures provide flow rates for their filter models. What is the maximum amount of water flow in gallons per minute that your filter will allow? Make sure that you new pump will not exceed the allowable filter flow, as damage can be done to the filter housing and to the filter internals. Also keep in mind that the pool and or spa piping has been designed with its own flow characteristics. Trying to put to much flow through the piping can also cause damage to your plumbing system (Pressure Side). The suction side piping has also been designed to accept a certain amount of flow. Trying to "pull" more water through a piping system than what the system has been designed for will also cause issues and problems. If a larger horsepower pump can not receive all the water flow that is required for it to function properly, the pump will most likely cavitate, trying to seek and find enough water flow to allow it to operate correctly.

As you do you research and make your decisions about your new pump, it will become clear that your existing horsepower pump might be the best size for your swimming pool and or spa system. Also keep in minds that if you are replacing a very old inefficient pump with a new high efficient unit, check the water flow characteristics of the newer pump. Many new high efficient pumps push more water than the older style pumps. Larger horsepower pumps also require additional electrical energy thus resulting in higher electrical costs. Many times it is best to consult with a swimming pool professional that can ask questions about your pool system and help you determine the best style and type of pump which will operate best in your situation. Keep the water flowing at just the right flow rate and have an enjoyable crystal blue pool and spa today.

Ron Burr graduated from Florida Atlantic University in 1978 with a degree in Music Education. Ron has been in the swimming industry since for over 30 years and is currently a State of Florida licensed swimming pool and spa contractor. Ron is also the owner of One Stop Pool Supplies http://www.onestoppoolsupplies.com a great place to shop for all your swimming pool and spa supplies.

 

 

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