Your pool pump is the single biggest user of electricity on the equipment pad. For most Florida homes with pools, the pump is the biggest single electricity user in the whole house— often 20–30% of the monthly bill. Upgrading from a single-speed to a variable-speed pump is the best ROI move in residential pool equipment, and in many cases it's now legally required.
Single-speed vs. two-speed vs. variable-speed
- Single-speed: On/off. Always runs at 3,450 RPM. Drinks electricity.
- Two-speed: High and low. Half of a VS pump for half the cost.
- Variable-speed: Infinitely adjustable 600–3,450 RPM. Runs at low RPM 90% of the day, high RPM only for vacuuming/heating. Massive energy savings.
The DOE mandate
Since July 2021, the U.S. Department of Energy requires nearly all new residential pool pumps >1 total HP to be variable-speed. If your single-speed pump dies, your replacement options are largely limited to VS models. This is federal law, not just a recommendation.
Actual savings (Florida math)
Typical single-speed pump at 1.5 HP runs ~2,300 watts at full speed, 8 hours/day. At $0.15/kWh:
- Single-speed: 2.3 kW × 8 hrs × 30 days × $0.15 = $83/month
- Variable-speed (80% low RPM, 20% high): ~$25/month
- Savings: ~$58/month = $696/year
Typical VS pump costs $900–1,400 installed. Payback: 12–18 months in Florida.
Sizing your pump
Pumps are typically oversized — a mistake carried over from the single-speed era. The right size:
- Calculate turnover: pool gallons ÷ 8 = gallons per hour needed.
- Match to the pump curve at lowest efficient RPM (usually 1,200–1,800 RPM).
- Verify your filter flow rate isn't exceeded.
Most Florida residential pools run fine on a 1.5–2.0 HP VS pump.
Our pump recommendations
For residential: Pentair IntelliFlo3, Hayward TriStar VS, Jandy VS FloPro. All three are solid. IntelliFlo3 has the best app integration.