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Pool pumps, energy, and water in Scottsdale

Pool pump motors of 1.15 to 5 hp made since September 29, 2025 must be variable-speed. The guide covers the rule, the SRP and APS split, current rebates, and how covers cut evaporation.

Updated , about 4 minutes to read

A pool pump runs for hours a day, and in Scottsdale it runs through a long hot season. NOAA's 1991–2020 normals for Scottsdale Airport show about 93 days a year at 100°F or more. That makes the pump, the run schedule, and the cover the main levers on a pool's energy and water costs.

The federal variable-speed rule

The U.S. Department of Energy sets efficiency standards for the motors that drive pool pumps, in 10 CFR 431.485. The rule phases in by motor size:

Motor size (total horsepower)RequirementApplies to motors made on or after
1.15 to 5 hpMust be variable-speedSeptember 29, 2025
0.5 to under 1.15 hpMust be variable-speedSeptember 28, 2027
Under 0.5 hpAt least 69% full-load efficiencySeptember 29, 2025

The rule covers motors made on or after those dates. It doesn't require you to replace the pump already on your equipment pad. It matters when your old pump fails. Ask the installer what replacement fits your plumbing and filter.

Why speed matters

ENERGY STAR says "reducing pump speed by one-half allows the pump to use just one-eighth as much energy." It also says ENERGY STAR-labeled in-ground pumps use 20% less energy than standard pool pumps.

The savings depend on the run schedule. When you take over a new pool or a new pump, ask the installer to set a low-speed filtration schedule and to show you how to change it.

SRP or APS: check your address

Scottsdale's electric service is split between two utilities. The city's General Plan electrical services map shows areas served by APS and areas served by SRP. Rate plans, peak hours, and programs differ between them, so confirm your utility before you plan pump schedules around a rate.

APS. On its energy-saving tips page, APS advises customers on time-of-use plans to run the pool pump during winter super off-peak hours, 10am to 3pm.

SRP. Check SRP's current rate plan pages for its time-of-use hours before you set a schedule.

Rebates as of October 2026

  • SRP: "SRP offered a pool pump rebate in the past, but it's no longer available."
  • Scottsdale Water: the city's residential rebate page, last updated July 8, 2026, lists no rebate for pool covers or pool pumps.
  • Pool removal: As of October 2026, Scottsdale Water's rebate page lists a pool removal rebate of up to $1,500 with an April 30, 2027 deadline, but also says removal rebates closed March 31, 2026 and require a pre-inspection before removal. Confirm the status with the Water Conservation Office (480-312-5650) before you plan on it.

Treat any bid that counts a utility rebate toward the price with caution, and ask for the program name so you can check it yourself.

Evaporation and covers

The Arizona Municipal Water Users Association, a group of the region's municipal water providers, estimated in 2016 that "during the summer, a 400-square-foot pool will lose 10 inches a month or about 2,500 gallons to evaporation." That loss is water you pay for and heat you lose.

A U.S. Department of Energy fact sheet says pool covers "can reduce evaporation, minimize water loss, and save 50-70% of pool heating costs." A cover saves water only on the days it goes on, so weigh how your household will use it. If you want an automatic cover, settle that before the shell goes in, because the pool's shape and coping have to fit the cover track.

Drought status

As of the city's April 14, 2026 update, Scottsdale was in Stage One of its Drought Management Plan, which the city describes as "increased monitoring and evaluation." The page listed no restrictions on pools. Drought stages change, so check the city's water shortage page before you fill a new pool.

Where the equipment sits

In the City of Scottsdale, pool equipment must sit at least 10 ft from any opening to an indoor living area on a neighboring property. The city also requires the equipment to be screened to 12 in. above its highest point. Carefree asks for a solid wall and gate around the equipment. Leave room inside the screen for a future heater or a larger filter, and for someone to reach the valves without climbing over the pump.

Heaters and permits

In Scottsdale, a new gas heater needs a separate plumbing permit. Adding or replacing a heater on an existing pool needs a separate mechanical permit. A cover cuts heater run time, so price the two together.

Questions for an equipment bid

  • Which pump motor is in the bid, and what is its horsepower?
  • Who programs the pump, and to what schedule?
  • Which utility serves the address, and does the schedule fit its time-of-use hours?
  • Does the bid include a cover, and what kind?
  • Does a heater in the bid need a separate permit, and who pulls it?

For draining rules and monsoon drainage, see the drainage guide. For contract rules, see the Arizona pool contract guide.

Sources

  1. eCFR: 10 CFR 431.485, Energy conservation standards for dedicated-purpose pool pump motors
  2. ENERGY STAR: Pool Pumps
  3. City of Scottsdale: General Plan 2035 Electrical Services Map
  4. SRP: Residential Rebates
  5. APS: Energy-Saving Tips
  6. City of Scottsdale: Residential Water Conservation Rebates
  7. City of Scottsdale: Water Shortages and Preparedness
  8. U.S. Department of Energy Better Buildings: Pool Efficiency
  9. Arizona Municipal Water Users Association: Scottsdale Offers Arizona's First Pool Removal Rebate (2016)
  10. City of Scottsdale: Swimming Pools, Hot Tubs and Spas
  11. City of Scottsdale: Pool Site Plan Requirements
  12. Town of Carefree: Residential Pool Plan Review Checklist
  13. NOAA NCEI: 1991–2020 Annual/Seasonal Normals, Scottsdale Municipal Airport

Rules, rates, and costs change. Confirm details with the agency or a qualified professional before you act on them.

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