Question 1

What's the address and how do you access the property?

Accepted Answer

Have the full street address ready and any access notes — gate codes, intercom, parking instructions, or whether someone needs to let the pro in.

Question 2

When did the issue start, and what have you already tried?

Accepted Answer

A short timeline + any DIY fixes you've attempted helps the pro diagnose faster and avoid duplicating work.

Question 3

Can you send a photo or short video?

Accepted Answer

Most pros ask for one before quoting. A clear photo of the problem area saves a callout fee for an estimate visit.

Question 4

What's your rough budget and timeline?

Accepted Answer

Knowing your ballpark and how soon you need the work done helps the pro tell you upfront whether they're the right fit.

Question 5

Will you be on site, or someone else?

Accepted Answer

Tell the pro who'll meet them, their phone number, and whether they can authorise additional work if something unexpected comes up.

Question 6

How much does a zwembadonderhoud cost in New York?

Accepted Answer

Rates in New York, NY vary by job. Compare local local zwembadonderhouds on HireLocal, see real rates and reviews, and get free quotes.

Question 7

How do I find a local zwembadonderhoud in NY?

Accepted Answer

Every pro on HireLocal is local. Browse zwembadonderhouds in New York, NY to see ratings, reviews, and get free quotes.

Question 8

What is a Pool skimmer?

Accepted Answer

A built-in suction port at the water surface of a swimming pool that draws in floating debris — leaves, bugs, pollen, and sunscreen residue — before it sinks to the bottom. Located behind a hinged flap (weir door) in the pool wall, the skimmer basket catches large debris while water continues to the pump and filter. Most residential pools have 1–2 skimmers; one per 400–500 sq ft of surface area is standard. Maintenance: empty the basket weekly, clean the weir door hinge seasonally, and replace cracked baskets ($10–$25 each). A clogged skimmer reduces circulation, stresses the pump, and allows algae to form. If your pool surface stays dirty despite running the pump, check the skimmer basket and weir door first. Replacement of the entire skimmer housing (rare, usually due to cracks or leaks) costs $500–$1,500 including the deck cut. Robotic pool cleaners supplement skimmers but don't replace them — the skimmer is the pool's first line of defense for surface debris.

Question 9

What is a Pool pump?

Accepted Answer

The motor-driven device that circulates water through the pool's filtration and sanitation system. It pulls water from the skimmer(s) and main drain, pushes it through the filter, heater (if present), and chlorinator, then returns it through wall jets. Modern variable-speed pumps (required by DOE since 2021 in the US) use 50–75% less electricity than single-speed models and typically cost $800–$1,500 installed vs. $400–$800 for single-speed. A pool pump should run 8–12 hours daily for proper turnover (filtering the entire pool volume at least once). Signs of failure: unusual noise (grinding bearings), reduced flow, air bubbles in the return jets, or the motor failing to prime. Pump replacement costs $400–$1,500 for the unit plus $200–$400 for installation. With proper maintenance (clean the strainer basket, maintain water level, lubricate O-rings), a pump lasts 8–12 years.

Question 10

What is a Pool filter?

Accepted Answer

The component that removes suspended particles from pool water after the pump pushes it through the filtration system. Three main types: sand filters (cheapest, $200–$600, filter down to 20–40 microns, backwash to clean), cartridge filters ($200–$800, filter down to 10–15 microns, remove and hose off to clean, most common residential choice), and diatomaceous earth (DE) filters ($500–$1,200, filter down to 2–5 microns, best water clarity, require DE powder recharging). Filter size should match the pool volume and pump flow rate; undersized filters cause high pressure, cloudy water, and premature pump wear. Replace sand every 5–7 years ($200–$500), cartridges every 1–2 years ($50–$150 each), and DE grids every 5–10 years ($150–$300). The filter pressure gauge is the key diagnostic tool — a reading 8–10 PSI above clean baseline means it's time to clean or backwash.

Question 11

What is a Pool water chemistry?

Accepted Answer

The balance of chemical parameters that keeps pool water safe, clear, and non-corrosive. Key parameters: free chlorine (1–3 ppm, the primary sanitizer), pH (7.2–7.6, controls chlorine effectiveness and swimmer comfort), total alkalinity (80–120 ppm, buffers pH against swings), calcium hardness (200–400 ppm, prevents plaster/equipment damage), cyanuric acid (30–50 ppm, protects chlorine from UV breakdown, outdoor pools only). Test water at least twice weekly with a reliable kit (Taylor K-2006 or digital photometer). Common problems: green water (low chlorine + high phosphates → algae), cloudy water (high pH, poor filtration, or high calcium), skin/eye irritation (pH outside 7.2–7.6 range, not 'too much chlorine' as commonly believed). Chemical costs average $50–$100/month for DIY maintenance; professional service costs $100–$300/month and includes testing, dosing, and minor equipment checks.

Question 12

What is a Pool shock treatment?

Accepted Answer

A super-chlorination process that raises free chlorine levels to 10–30 ppm (versus the normal 1–3 ppm) to kill algae, bacteria, and chloramines (combined chlorine causing the 'chlorine smell'). Pool shock is required after heavy use, rainstorms, temperature spikes above 30°C, or when combined chlorine exceeds 0.5 ppm. Types: calcium hypochlorite (cal-hypo, 65–75% available chlorine, adds calcium), sodium dichlor (stabilized, slower-dissolving, good for routine shock), and non-chlorine shock (potassium monopersulfate — oxidizes contaminants without raising chlorine, safe to swim in 15 minutes after). Cost: $3–$8 per pound for cal-hypo; a typical shock treatment for a 50,000L pool uses 0.5–1 kg. Timing: shock at dusk (UV degrades chlorine), run the pump for 8 hours, and don't swim until free chlorine drops below 3 ppm (usually 8–24 hours). In Spain, community pools (urbanización) are required to maintain a registro de tratamientos documenting all shock treatments per local health ordinances.

Question 13

What is a Salt water chlorinator?

Accepted Answer

A device that generates chlorine on-site by passing a mild saltwater solution through an electrolytic cell, eliminating the need to buy, store, and handle chlorine tablets or liquid. The pool is salted to 2,700–3,400 ppm (about 1/10 ocean salinity — barely perceptible to taste). The cell splits dissolved salt (NaCl) into sodium hypochlorite (liquid chlorine) via electrolysis. Equipment costs $800–$2,000 for the generator unit; professional installation adds $300–$600 including plumbing and electrical connections to the pool equipment pad. Annual salt expense: $20–$50 (you add salt 1–2 times/year). The electrolytic cell lasts 3–7 years and costs $400–$900 to replace. Advantages: consistent chlorine output (no peaks/valleys), softer-feeling water, lower annual chemical costs ($50–$100/year vs. $300–$600 for traditional chlorine), and reduced chloramine formation (less eye/skin irritation). Important: you still need to monitor pH (salt systems tend to raise it), maintain cyanuric acid levels, and shock the pool occasionally. Not recommended for pools with extensive natural stone coping, as splash-out salt water can accelerate stone erosion.

Question 14

What is a Pool resurfacing?

Accepted Answer

The process of removing or covering the worn interior finish of a concrete/gunite pool and applying a new surface. Pool plaster typically lasts 7–15 years before it becomes rough, stained, or starts delaminating — signs include rough texture cutting swimmers' feet, persistent algae in pitted areas, and visible gunite showing through worn spots. Surface options (per square foot, including labor): standard white plaster $4–$7 (lifespan 5–10 years), colored/quartz-aggregate plaster like Diamond Brite $6–$10 (10–15 years), pebble finishes like PebbleTec $8–$15 (15–20+ years), and glass bead finishes $10–$18 (15–20+ years). For a typical 400 sq ft pool, total costs: plaster $3,500–$5,500, pebble $5,000–$9,000, glass bead $6,000–$11,000. The process takes 5–10 days: drain pool, chip/bond old surface, apply new finish, fill and balance chemistry. The pool must cure for 28 days (keep water circulating, brush walls daily for the first 2 weeks, no heater use, maintain pH 7.2–7.6). Resurfacing is also the time to add tile repairs, coping replacement, or equipment upgrades since the pool is already drained.

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