The pump hums but doesn’t spin, and there’s a rusty drip line running down from the seam where the pump meets the motor. The owner has already looked up a new pump and found Angi’s 2026 national average of $1,300 installed. The likely fix is a $32 capacitor and an $11 seal. Knowing what failed before buying anything is the whole point of pool equipment repair and upgrades, and a humming pump is about as common a place to start as any.

Every pad in Ventura County is the same handful of parts: a pump, a filter, valves, a timer or automation panel, often a heater and a salt cell, a cleaner, and the pipe that ties it together. Pools here run all year, so the equipment wears all year. Most failures are small and boring. A few are expensive, and those are the ones worth catching early.

What fails on a pad, roughly in the order it shows up

This is the order we’d bet on, from the stuff that goes every few years to the stuff that rarely goes at all. The pump dominates, because it’s the only thing on the pad that spins for hours every day.

On the pump, that means shaft seals that leak, bearings that get loud, capacitors that quit and impellers that clog. Around it, valve o-rings dry out and drip, timers lose track of the hour and salt cells scale up and wear out. Heaters, lights and cleaners each keep their own list. The plumbing under the deck holds out longest, right up until it doesn’t.

Pool equipment repair costs, part by part

Part prices below are real 2026 retail listings, named by store. Repair ranges are national figures from Angi, HomeGuide and ConsumerAffairs, which include labor. Angi’s pump repair guide puts pool tech labor at $75 to $150 an hour. National guides tend to run light for coastal Southern California, so read the low end as optimistic.

Look at the part column. Most of what breaks costs less than dinner out. What you’re really paying for is someone who knows which $11 part it is.

The pump: where most repair calls start

Shaft seals are the most common leak on any pad. The seal is a spring and ceramic ring sitting between the wet end and the motor. When it goes, water drips out of the seam, and it doesn’t stay outside. The troubleshooting guide from In The Swim spells out the sequence: seal damage lets chlorinated water seep into the bearings and wash out their lubrication.

Bearings are the second act. INYOPools’ bearing guide calls a squealing motor “an early indication that the bearings are failing.” A pair of bearings is under $40 in parts. Pressing them on is shop work, so on an older motor the math often tips toward a new motor instead.

Capacitors are the cheap one. A motor that hums and won’t turn is either a bad capacitor or something jammed in the impeller. INYOPools warns that capacitors “store an electrical charge that can shock you even when the power is off,” and that they have been known to explode when shorted. That’s a sentence worth reading twice before you open the motor cover.

Impellers clog with whatever got past the strainer basket: leaves, pine needles, pebbles, the occasional hair tie. After a Santa Ana wind, expect one. The pump runs, the filter gauge drops, and the returns barely ripple. Clearing it is labor only if nothing broke. Angi puts impeller repair at $120 to $300 and a replacement at $150 to $400.

When to stop fixing it. Angi’s 2026 pump repair guide says most pump repairs land around $350, in a range of $100 to $700. Its replacement guide says a pump over eight years old with problems is likely due, and that a repair over 50% of the price of a new pump is the wrong call. HomeGuide puts a new variable speed pump at $800 to $2,000 installed. California also decides what that replacement is allowed to be, so read the California variable speed pump rule before anyone quotes you a single speed pump.

Valves, unions and the small leaks that aren’t small

Jandy Never Lube valves are on a lot of pads, and they’re good valves. The failure is the o-rings: the big one under the lid and the two on the stem. A lid o-ring kit is $8.99 at Pool Guy Supply. A whole new 4717 valve is $116.11 at Poolweb, and you only need one if the body cracked or the handle stripped.

Unions are the threaded couplings that let a tech pull the pump or heater without cutting pipe. Their o-rings flatten and crack in the sun. On the pressure side you get a drip. On the suction side you get something worse: air pulled into the system, bubbles in the pump basket, and a pump that loses prime overnight.

Timers and automation

The gray Intermatic box with the clock dial has been on pool pads for decades. The mechanism inside wears out, the trippers break, and the clock stops. A replacement T104M mechanism is $95.55 at Pool Goods, and it swaps into the same box. Angi puts timer installation at $50 to $100.

Automation panels are a different animal. ConsumerAffairs puts repairing or upgrading an automation system at $500 to $2,000. Before assuming the panel is dead, check the parts it drives. A valve actuator that stops turning is a common culprit when spa mode won’t switch, and a Jandy JVA 4424 is $251.32 at Pool Parts Unlimited.

Salt cells and Ventura County hard water

The salt cell is the most expensive routine replacement on a pad. Doheny’s lists the Hayward T-Cell-15 at $1,099 and the Pentair IC40 at $1,149. Doheny’s IC40 listing rates the blades at 10,000 hours, which it translates to about five years.

Hard water shortens that. Hayward’s own guide to cleaning a TurboCell says to inspect it about every three months, or 500 hours, and that “the pH and calcium hardness levels are the two factors that have the greatest impact on how often your TurboCell will require cleaning.” It also says calcium left on the plates cuts chlorine output and can shorten the cell’s life. Our fill water is hard, so that’s a local problem, and it’s the same calcium that scales your tile line.

A cell that reads low after a proper cleaning, on balanced water, is usually worn out. A cell that reads low and is crusted white is usually fine. Clean it before you buy one.

Heaters and lights, briefly

Heaters get their own article. Angi’s 2026 pool repair guide puts heater repair at $160 to $730, and the answer depends on which part failed and how old the unit is. If yours is acting up, read whether to repair or replace the pool heater before you sign anything.

Lights follow the same logic. Angi puts light repair at $65 to $150 per light, and ConsumerAffairs puts a full swap at around $625 per unit. The details are in our guide to pool light replacement.

Pool cleaners

Pressure cleaners like the Polaris 280 wear out small parts constantly. The back-up valve is the usual one. Polaris says it opens every 3 minutes for 30 seconds so the cleaner backs up and changes direction. When it quits, the cleaner parks in a corner and stays there. A G52 back-up valve kit is $107.26 at Pool Goods.

Past a certain age the answer is a tune-up kit, and Pool Parts Unlimited lists the Polaris A49 kit for the 180 and 280 at $374.19. Whether that’s worth it on a cleaner with a tired body and cracked hoses is a fair question. (Often it isn’t.)

Plumbing leaks: the repair nobody wants

This is the one that goes under the deck. You notice the water level dropping faster than evaporation explains, a wet spot that never dries, or a pump that keeps losing prime. Angi’s 2026 leak detection guide says finding the leak averages $300, and up to $1,000 on an inground pool. A line pressure test is $200 to $500. If the pipe has to be dug up, excavation alone runs $500 to $5,000.

Finding it first is the whole game. Angi’s range for the leak repair itself runs from $10 to $3,500, and where the leak is decides which end you land on. We covered the process in how we find and fix pool leaks.

Asked at the pad, every week

Should I replace the pump or just the motor? If the wet end (housing, lid, basket) is in good shape, a motor alone can make sense. If the housing is cracked or the pump is past eight years, replace the whole pump. Motor-only swaps on an old wet end tend to end with a second call.

Can I change a capacitor myself? You can, with the breaker off and the capacitor discharged first, per INYOPools’ instructions. If “discharge the capacitor” is a new phrase, call someone.

My pump leaks only when it’s off. Why? Usually a suction side leak, at a union or valve lid. When the pump runs it pulls air in through the same spot instead.

Is pool equipment repair covered by warranty? Sometimes. It depends on brand, model and age, and the paperwork is usually in a drawer nobody has opened since the install. Find it before you pay out of pocket.

How do I stop most of this from happening? Balanced water and someone who looks at the pad every week. A seal that drips gets caught before it becomes bearings, which is most of the value of weekly pool maintenance.

Take a photo of the pad before you call

We don’t quote pool equipment repair over the phone, because a hum can be a $32 capacitor or a seized motor, and you have to see which.

So do the free part first. Take one wide photo of the whole equipment pad and a close photo of the data plate on whatever is acting up, then send them to us through the site with a line about what you’re hearing or seeing. That tells an honest tech most of what they need before they arrive.

We service Pentair, Jandy, Zodiac, Hayward and Sta-Rite equipment, so whatever is dripping on your pad probably isn’t new to us. Call (805) 586-2055 and we’ll get a tech out to look at it.