How Long Does Sand Filter Last Commercial Pools
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Silica sand filters are price constructive, they work well, and they practise not take a huge amount of ongoing maintenance day to day. There might exist better options for pool filters that waste less water, are more menstruation efficient and are capable of removing finer physical debris from the water than sand filters only that does nothing to diminish the popularity of sand filters. You really could make a very good instance for upgrading to a more efficient filtration arrangement that has much less resistance to flow than a behemothic tank of sand that you are pushing water through.
A well designed and efficient plumbing system would be 1 that is like shooting fish in a barrel for the filtration pump to draw and push button water through. If you had a arrangement that was incredibly hard to push button water through this would consequence in a less efficient plumbing system. This is actually kind of what a sand filter is, relatively speaking, and this is why an upgrade to something with a much better menstruation design should e'er exist on the tabular array if you currently ain a sand filter. Before you consider spending any money on a filter service you should weigh the comparison of cost for servicing the filter you lot have now versus replacing with a new model. There could be enough reward for y'all to upgrade already, and the money spent on service to the old filter might be better off going towards the purchase price of a newer, more reliable and more efficient filter system.
The single biggest problem with pool sand filters is the multiport valve they apply to select filtration settings such equally backwash, rinse, winter, close, recirculate and filter. Convenient for the puddle operator, but definitely a huge flow restriction when compared to pretty much every other valve, fitting and piece of equipment within your filtration system. The maximum designed flow charge per unit, a very important number relating to the volume of water your filter can handle before the potential exists for damage to internal components, is specifically depression in sand filters versus any other filter type. Take a await at this comparison between a sand filter and a cartridge filter, where both of these filters are of suitable size for a 20x40' swimming pool.
Hayward S270T - 350 lbs sand filter
Maximum design menstruation rate = 74 GPM
Hayward C4030 - 425sf cartridge filter
Maximum design flow rate = 150 GPM
Both of these filters are very large, but non the largest available for either option. Both of these filters will accept no problem keeping an extra deep xl,000 gallon 20x40' pool clean and clear, but as you tin see those menstruum rates are majorly different. This is especially important since boilerplate one horsepower pool pumps can hands motion 80+ GPM and new variable speed pool pumps in the two to 3 horsepower range like the EcoStar, TriStar 950 and IntelliFlo are easily capable of 150+ GPM so long as the plumbing system can handle this much flow. If y'all have a sand filter, and you lot exercise non have a menstruation meter telling you how many GPM is moving through your organization, so you are most certainly overdriving your sand filter. This is very important to know.
How does a sand puddle filter work? - A sand filter is a force per unit area vessel, essentially a tank filled with sand. Water is applied under pressure from the pump and forced through graded sand which removes all simply the smallest concrete debris before the h2o is collected clean on the other side of the sand and continues on through your plumbing organisation and back to your puddle. Backwashing, a term synonymous with puddle sand filters, is exactly as it sounds in that the h2o is sent backwards through the filter from the management it normally travels. This forces all the physical debris that is sitting in the first few layers of sand to launder out through the waste material pipe or drain on your pool filter. When the pump applies water pressure the unabridged filter tank swells in size, a quite unsettling feeling when yous are standing next to one while doing this every bit information technology really shows you how much pressure and lower exists in these systems. The filter weighs hundreds of pounds and feels as solid every bit can exist, despite beingness fabricated from resin. Simply when pressure applies from the pump the unabridged tank swells similar an inflating balloon. Definitely never accept the potential for danger lightly with a pool filter.
A quick recap here, a sand filter is a pressure vessel and swells and contracts every time you lot turn on and off the pump, and it is rated for a certain maximum flow rating that many puddle owners accidentally exceed for the entire operating life of the filter. Then now we can start to talk about the main betoken of this commodity y'all are reading, which is when should you lot supervene upon your filter sand? As an experienced pool technician I can hands tell yous that most of the people who change their filter sand, or think that they demand to change their filter sand, actually practice not need to do this. Worse than this they specifically should avoid changing the sand in their filter.
If yous want to follow the book about how oftentimes y'all should change your filter sand the reply will be either every three to 5 years, or every 5 to 7 years, depending on who you inquire. But is this actually good advice? I don't call up so. These established values for sand filter changes were adult and agreed to in a different age of pool equipment. Pumps were smaller and filters were congenital to last. Every pool pump these days is absolutely gigantic, and pool filters, much like everything else these days is congenital to piece of work, but not to last. Parts are made using the cheapest, thinnest possible materials, and so these cheaply made filters are attached to pumps that provide manner too much menses. The end result is a filter that works, simply if you endeavor to change the sand every 3 to 5 years y'all are almost certainly going to encounter a problem.
How long does filter sand final? - Puddle filter sand does clothing over time much like play sand versus a sharp sand or brick sand. One time the edges of the sand accept worn downwardly the filter will have less filtering power compared to what it was when information technology was new. Additionally a pool filter is the garbage can for every final disgusting affair that finds its way into your pool. Afterward a few years time this becomes a bacterial convenance grounds. Sand filter changes every 5 to 7 years is how I was trained many years ago. However it was not exactly linear, it was told to me every bit every 5 to vii years, or when there is a problem. This is important, because most pool owners think sand changing is one of the first things you should wait to when the pool is cloudy or dark-green. Filter sand is probably the last thing you should expect at, percentage wise. Chances are extremely high that your trouble with water quality is either a chemical imbalance of some kind, or you merely are not running the filter plenty. It should be running 24/7 any time you lot are having water quality issues.
Equally a service technician I take regularly removed sand filters from service that were still operating on original sand after 25 years. There is no rule that says you lot must change your sand. Only a recommendation that if you have a trouble with your water y'all might need to change it. If you don't take a problem in the starting time place and so I am of the opinion that you should leave your filter lone. If your pool is light-green and you think maybe it is the filter sand, information technology is probably a chemistry effect in well over 90% of cases.
Why you should NOT change your filter sand - Pool filters used to be fabricated to terminal a one-half century or so, with some models even beingness stainless steel and strong enough to withstand decades of use, or even a direct strike with a vehicle...almost. Pool filters manufactured today are mass produced with resin and always-cheaper materials, gaskets and moving parts. The cease result is a product that works, but does not final. Add to this the fact that the filter is constantly exposed to chemicals, irresolute pressures, reversing pressures and physical debris and you might start to see why opening yours to change the sand might be a bad idea. While I used to perform filter sand changes regularly at the beginning of my career this is something I would rarely recommend these days. The chances of damaging something inside the filter during the sand removal process is very loftier. Fifty-fifty when you're careful, many times the internal lateral assembly parts are hanging on by a thread and fifty-fifty the lightest disturbance causes them to fail immediately in your manus, or fail in a mode that you practice not notice until the side by side day when all the sand from your filter is at present on the floor of your pool.
When a filter sand replacement service phone call goes well information technology is a quick, albeit gross chore. When a filter sand change does non go well I spend the time cleaning the former sand out, bringing in hundreds of pounds of new sand, put information technology in the filter, make clean upwards and start upward the system with a lengthy backwash to prevent the puddle from going cloudy from the new sand. But then the next day I get a call from you in a panic because the floor of your pool is covered with hundreds of pounds of sand. The standpipe or laterals broke. Y'all might be able to gild replacement parts. If they make them even so, and if they will non accept longer than 48 hours to get (special order parts is six weeks) you can purchase new sand, supersede the broken part and begin cleaning hundreds of pounds of sand out of the pool. Remember one function already broke inside the filter, and then unless you replaced everything than another failure seems likely. This is why you lot should strongly consider not replacing the sand in your filter.
A new cartridge filter is a lot more than money than a sand filter, but they are a much better filter in terms of what they can remove from the h2o, besides as being vastly better from a hydraulic efficiency standpoint. On paper the increment in system efficiency volition probably pay for the difference in price between a sand filter and a cartridge filter over the course of its service life. If you gene in that you might pay a few hundred to have your filter sand changed by a professional, and at best you lot have an old and possibly failing filter, for sure that few hundred would exist improve allocated towards purchasing a new, more than efficient cartridge filter.
Channeling sand - If the sand in your filter solidifies from historic period or adverse chemical situations so this would be one of the simply reasons I would explore changing the sand in your filter, equally this could happen to a fairly young filter that nonetheless has some life left in it. Calcium hardness and a scaling state according to the LSI tin can cause your water to calcify and solidify your sand in your filter, such that the water no longer filters nice and evenly, only has worked channels into the sand creating pathways of depression resistance to flow through. The terminate upshot is that water is going through the filter merely no water is actually beingness filtered.
Bacterial buildup - The stuff inside a sand filter gets pretty gross later on a while. A cartridge filter gets disgusting after a half season of operation and so you can simply imagine what a sand filter is like since it never gets cleaned out in the same thorough way that a cartridge filter does regularly. Instead of changing the sand to deal with the bacterial buildup in your sand filter you can also look towards a chemical treatment and cleaning to regenerate your sand media. This is a maintenance item that you would 100% try before you tin can fifty-fifty start to consider replacing the sand in your filter. If yous take not been using a sand filter degreaser
Sand Filter Cleaner
I would say that regular use of a filter cleaner production is the just long term maintenance that sand filters need other than backwashing of course. Do not await quickly to changing the sand in your filter as the respond to water quality issues. Filter your water 24/7 and ensure yous are within tolerance for your h2o chemistry as that is almost always the source of water quality and clarity bug. Sand filters article of clothing out but the effect would be a slow and steady decline over years and years. Decades. Bacterial buildup and channeling is a concern just those are both best treated with proper water balancing every bit well as a filter cleaning treatment, not sand changes. Finally, with the chance that yous overdrive your filter being high, or at to the lowest degree operate it at the very maximum operating range as a guarantee, and with how cheaply things are made these days, irresolute the sand in your filter is equally likely to crusade a problem as it is to prepare i. Perchance even more and so.
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How Long Does Sand Filter Last Commercial Pools,
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