What PoolBoss Says
Check five things at every stop: water level, the skimmer and pump baskets, filter pressure against that pool's clean baseline, visible leaks or drips at the pad, and whether the equipment is actually running. The value is not the glance. It is recording the same readings the same way each visit so a trend shows up before a failure does.
Every route tech looks at the equipment pad. Not every route tech leaves a number behind, and that is the whole difference between a walk-around and a habit. A pad you glanced at tells you nothing next Tuesday. A pad you wrote 18 psi against tells you something the moment you write 24.
A pool equipment check does not need to add ten minutes to a stop. Five checks fit inside the time you already spend waiting for the skimmer to settle, and four of them produce a number you can compare with last week. What follows is the five, what a filter pressure figure means when you read it against the right baseline, and where an observation stops being a note and starts being a repair quote.
At a glance
Key takeaways
- Check five things at every stop: water level, both baskets, filter PSI, leaks at the pad, and run state.
- Write the numbers down at the pool. An unrecorded walk-around cannot show you a trend, and the trend is the whole point.
- Set a clean-pressure baseline per pool right after a cleaning, and read every future PSI as a gap from that number rather than against a flat 20 psi.
- Record PSI before and after any backwash or clean; if it barely moves, the pressure was never the filter.
- Record what you found in the baskets, not just that you emptied them, because the pattern is the diagnosis.
- Tell the customer the same day, with the number in the sentence, and let repetition rather than severity decide when a note becomes a quote.
What should I check on pool equipment at every visit?
Five checks, in the order you already walk the pool. Each one takes seconds and each one produces something you can write down, which is what separates a pool equipment check from looking at a pump.
- Water level: mid-skimmer is the target. Low water starves the pump and can run a heater dry, and a level that keeps dropping on the same pool is the first sign of a leak rather than a thirsty summer.
- Skimmer basket and pump basket: record what you found, not only that you emptied them. A pump basket full of leaves every week on a pool with no trees nearby is a different story from a seasonal one.
- Filter PSI, before and after: one number at the start of the stop and, if you backwashed or cleaned, one at the end. Both matter, and the second is what proves the action worked.
- Leaks and drips at the pad: look at the pump lid o-ring, the unions, the multiport, and the ground under all of it. A dry crust of white scale under a fitting is a slow leak that dried between visits.
- Run state: is the pump running when it should be, is the cell or heater showing an error, and does anything sound different than it did last week. A bearing whine gives you two or three weeks of warning if somebody notes it.
A pad check is only worth what the record behind it is worth
A single filter pressure reading is noise. A reading with three previous readings next to it is a diagnosis. That is the whole argument for writing the walk-around down, and it is the reason a generic pool service checklist, the kind written for one homeowner and one pool, never produces an early warning: it ends at the task instead of at the number.
The difference shows up on the pools that fail. Equipment rarely dies without a run-up. A DE grid tears slowly, a cartridge stops rinsing clean, a pump seal weeps for a month before it floods the pad. Each of those is visible three or four visits ahead of the failure in a series of readings, and invisible in any one of them.
The mechanics are simple. When a technician can log filter pressure and basket condition at every visit, this week's PSI lands next to the last six on the same pool, and the pool equipment history becomes something you can read in five seconds at the gate instead of something you reconstruct from memory. Nothing here reads a gauge for you. Somebody still has to look at it and type the number.
Filter pressure: read it against the clean baseline, not against 20 psi
The rule of thumb is 8-10 psi over clean, and the word doing the work in that sentence is clean. Clean pressure is a per-pool number. One pool runs 10 psi with a fresh cartridge, the pool three streets over runs 18 because it has a smaller filter and a bigger pump, and a flat 20 psi threshold applied to both means you clean one filter too often and the other far too late.
So the baseline gets set once, per pool, right after a cleaning: note the pressure with a clean element and a full-speed pump, and that number becomes the pool's zero. From then on the reading that matters is the gap. A pool with a 12 psi baseline needs attention at 20-22. A pool with an 18 psi baseline is still fine at 24.
Take the reading before you touch anything, then again after you backwash or clean. If the PSI before and after barely moves, the pressure was never the filter, and you have just ruled out the cheap explanation in fifteen seconds. That is usually a closed valve, a clogged impeller, or a filter element that has stopped cleaning up and needs replacing rather than rinsing.
The walk-around in stop order
The point of fixing an order is that you stop deciding. The same five checks in the same sequence on every pool means nothing gets skipped on the stop where you are already running twenty minutes behind.
| Check | What you record | What it triggers |
|---|---|---|
| Water level | At, above, or below mid-skimmer | Top up now; two low readings in a row means investigate a leak |
| Skimmer basket | Clear, debris, or full, plus whether you emptied it | Full every week on a treeless pool means a returns or landscaping conversation |
| Pump basket | Clear, debris, or full, plus whether you emptied it | Debris with a clear skimmer suggests a suction-side leak drawing air and grit |
| Filter PSI | Pressure before, and after any action taken | 8-10 psi over that pool's clean baseline means backwash or clean |
| Leaks at the pad | A note and a photo of where the water or scale is | Second sighting of the same drip becomes a quote, not a note |
| Run state | Running or not, plus any error code or new noise | Anything that was not there last week gets told to the customer today |
What to tell the customer, and when it becomes a quote
Tell them the same day you see it, in one sentence, with the number in it. "Your filter is running 9 psi over clean four days after a backwash, so I want to look at the grids" lands very differently from a repair bill that arrives with no warning. Customers do not resent equipment failing. They resent finding out about it from an invoice.
The trigger for moving from a note to a quote is repetition, not severity. One high reading is weather, a party, or a windy week. The same pool reading high three visits running, or the same drip on the pad twice in a month, is a component on the way out, and it is worth pricing while the pool is still clear and the customer is still calm.
Where the work goes from there is a business question rather than a chemistry one. Decide in advance whether to take the repair yourself or hand it to a licensed specialist, and have a habit for quoting the repair once you have found it so the conversation does not stall for a week while you work out a price.
One Buckeye pool, three readings, and a Tuesday instead of a Saturday
A two-truck operator runs 150 pools across Goodyear and Buckeye. One Buckeye pool has a 12 psi clean baseline written on its record. In early July the tech reads 21 psi, backwashes, and it drops to 13, which is exactly what a dirty filter is supposed to do.
Three weeks later the same pool reads 19 psi four days after a backwash. On its own that is an ordinary high reading in July. Sitting underneath 21, 13, and the 12 psi baseline, it is a filter that stopped holding its clean pressure, which on a DE filter usually means a torn grid pushing DE back into the pool.
That pool got quoted on a Tuesday. Without the previous numbers it would have been backwashed again, then again, and become a Saturday callback with a cloudy pool and an unhappy customer. The readings did not diagnose anything by themselves. They just meant the tech who saw 19 psi could see it next to 12, and cleaning the filter properly once the pressure says so had already been ruled out as the answer.
FAQ
Frequently asked questions
How long should an equipment walk-around take on a normal stop?
Under two minutes once it is a habit, and most of that overlaps with time you are already standing there. Water level and run state are noticed on the way in. The baskets are already part of the stop. The two additions are reading the pressure gauge before you start and writing down what you found, which together cost maybe 30 seconds. The version that eats a stop is the unstructured one, where you look at the pad, notice something, spend four minutes deciding whether it matters, and then leave without recording it. A fixed order removes the deciding. On a 25-minute residential stop the walk-around should be invisible in the schedule, and if it is adding five minutes, the problem is usually that the pool has no baseline written down yet, so every reading has to be interpreted from scratch.
What filter pressure reading means I should backwash instead of waiting?
Roughly 8-10 psi above that pool's clean baseline, which is the number you noted with a freshly cleaned element and the pump at full speed. On a pool that runs 12 psi clean, that means acting somewhere around 20-22. On a pool that runs 18 psi clean, the same 22 is normal and cleaning it there wastes water and your time. Two things change the answer. A pool with a variable-speed pump reads lower on the low setting, so compare readings taken at the same speed or the gap is meaningless. And a reading that climbs back to the trigger within a few days of a backwash is not telling you to backwash again, it is telling you something else is restricting flow.
Should I photograph equipment problems or just write a note?
Photograph anything you might have to describe to somebody who is not standing there, which is most equipment problems. A note that says "drip at the union" means one thing to you at the pool and something vaguer three weeks later when the customer asks which union. A photo also settles the two conversations that cost the most: whether the crack was there before you touched it, and whether the part you are quoting is the part you actually saw. Write the note as well, because a photo is not searchable and a note is. The practical rule most operators land on is a photo for anything physical you might quote, and a note alone for a state you recorded as a number.
How do I set a clean-pressure baseline on a pool I just took over?
Clean the filter properly on the first or second visit, then take the reading with the pump at full speed once the air is out of the system, and write that number on the pool's record as its baseline. Do not inherit a number from the previous company or guess from the pool's size, because the baseline depends on the filter, the pump, the plumbing, and how tired the element already is. Re-set it whenever you change the element or the pump, since both move the number. On a takeover it is also worth noting the pressure you found before you cleaned anything, because the gap between that first reading and the new baseline tells you how far behind the previous service had fallen.
What do I check on a pool with automation or a variable-speed pump?
The same five things, with two additions. First, note which speed the pump was running at when you took the pressure, because a reading at 1,800 rpm and a reading at 3,000 rpm on the same clean filter are not comparable and mixing them makes the history useless. Second, check the schedule is still what you set it to. Automation panels get changed by homeowners, pool guests, and power cuts, and a pool that quietly went from eight hours of filtration to three will start failing chemistry tests for reasons that have nothing to do with chemistry. Read any error or service light on the panel and write down the exact code rather than the fact that a light was on.
When does a repeat equipment note become a repair quote?
When the same observation shows up a third time, or a second time inside a month. That threshold is arbitrary on purpose. What matters is that it is a rule rather than a judgment call made in the heat of a busy Thursday, because the failure mode without one is a pad note that quietly repeats for two months and then becomes an emergency. When you do quote, lead with the history rather than the part: three dated readings showing the filter no longer holds its clean pressure is a far easier conversation than an opinion that the grids look tired. Customers agree to repairs they can see coming, and the record is what makes it visible to somebody who has never looked at their own equipment pad.
