Yes, mostly. In the US, the Department of Energy has set rules that move new pool pump motors to variable speed. They do not tell you to rip out a pump that works. This page explains what the rules say, which sizes and dates they cover, and what it means if you are buying or repairing a pump. No legalese, we promise; just the dates you actually need.
The short version: under DOE's 2023 rule for pool pump motors, motors from 1.15 to 5 total horsepower (THP) must have variable-speed control from September 29, 2025, and motors from 0.5 to under 1.15 THP from September 28, 2027. For that small size, DOE has said it will delay enforcement for motors made before March 26, 2029. Motors under 0.5 THP only face an efficiency requirement. The rule covers motors sold in new pumps and as replacements. California already required variable speed for replacement motors of 0.5 THP and up from July 19, 2021.
The rules in one table
| Motor size | Requirement | From |
|---|---|---|
| Under 0.5 THP | Minimum full-load efficiency (69%); no speed requirement | September 29, 2025 |
| 0.5 to under 1.15 THP | Variable-speed control | September 28, 2027 (enforcement delayed for motors made before March 26, 2029) |
| 1.15 to 5 THP | Variable-speed control | September 29, 2025 |
Source: DOE's final rule for dedicated-purpose pool pump motors, published in the Federal Register on September 28, 2023, DOE's page on these motors, and DOE's enforcement policy of April 24, 2026. Motors with freeze protection controls must also meet default freeze-protection settings in the rule.
What "total horsepower" means for your pump
THP is total horsepower: in plain terms, the motor's rated horsepower multiplied by its service factor (our explanation; DOE's 2012 guideline notes that pool pump motors have large service factors, so their total horsepower is much greater than the nameplate implies). It is usually on the motor label, as on Polaris's PB4-60 booster pump, whose manual lists 1.13 THP. Many in-ground filter pumps sold as 1.5 or 2 HP are in the 1.15 to 5 THP group (our reading: check the THP on your motor's label). DOE notes that 1.15 THP is roughly equivalent to the 0.711 hydraulic horsepower threshold in its earlier pool pump standard.
Why this is happening
Two reasons from the rule itself:
- Pumps were already regulated, motors were not. DOE's pool pump standards took effect on July 19, 2021. Industry and efficiency groups pointed out that the motor on a pool pump often fails before the pump itself, and that motor-only replacements are common. Without a motor rule, a new efficient pump could get a less efficient replacement motor.
- Energy. Variable-speed motors can save more energy than two-speed or multi-speed motors, DOE says, and can also reduce wear and noise. How much energy: how much electricity a variable-speed pool pump uses.
What it means for you
- Your working single-speed pump: nothing in these rules tells you to replace a pump that works. They set requirements for motors manufactured and sold from the compliance dates (our reading of the rule; DOE's enforcement policy also speaks of motors "manufactured on or after" a date).
- When your motor fails: a replacement motor of 0.5 THP or more made after the compliance date for its size has to be variable-speed. So a "like-for-like" single-speed swap gets harder. See replace the motor or the whole pump?
- Buying a pump now: single-speed pumps may still be on sale, for example older stock. Check the THP and whether the listing says variable-speed, and when in doubt ask the seller (our advice). Our picks: best variable-speed pool pumps and best inground pool pumps.
- In California, the state's own rule for replacement motors of 0.5 THP and up has required variable speed since July 19, 2021.
Sources
DOE: Dedicated-Purpose Pool Pump Motors (effective date November 27, 2023 and the compliance dates); DOE final rule, Energy Conservation Standards for Dedicated-Purpose Pool Pump Motors (standards table, freeze protection, the background on replacement motors, the 0.711 hhp note and California's rule); DOE enforcement policy for small-size pool pump motors (April 24, 2026); THP example: Polaris PB4-60 manual. This page explains the rules; it is not legal advice. Points marked as ours are our own reading or advice.
Frequently asked questions
Are single-speed pool pumps being phased out?
For most sizes, yes. Under DOE's 2023 rule, new pool pump motors of 1.15 to 5 THP need variable-speed control from September 29, 2025, and of 0.5 to under 1.15 THP from September 28, 2027.
Do I have to replace my single-speed pump?
Nothing in these rules tells you to replace a pump that works; they cover motors manufactured and sold from the compliance dates (our reading). When it fails, a replacement motor of 0.5 THP or more may have to be variable-speed.
Does the rule cover replacement motors?
Yes. DOE's rule covers pool pump motors whether they are sold in a new pump or on their own as a replacement.
What about small above-ground pumps?
Motors under 0.5 THP have only an efficiency requirement. Motors from 0.5 to under 1.15 THP need variable-speed control from September 28, 2027, with enforcement delayed for motors made before March 26, 2029.
