If your pool is still running a single-speed pump, you're likely spending two to three times more on electricity than you need to. Variable-speed pumps (VSPs) have been the industry standard for good reason — but the case for upgrading depends on how much you're currently paying and how long you plan to own the pool.
Why Single-Speed Pumps Are Expensive
A single-speed pump runs at one RPM — full speed — all the time. You don't need full speed to filter the pool. You need full speed to run a cleaner or waterfall, but for basic circulation, you're burning far more energy than the job requires. Electricity consumption decreases by roughly the cube of RPM reduction: drop the pump to 50% speed and it uses about 12% of the energy.
The Numbers
- A 1.5 HP single-speed pump running 8 hours/day costs roughly $600–800/year in Oklahoma electricity rates
- A variable-speed pump running the same pool typically costs $150–250/year
- Annual savings: $400–600
- Typical VSP cost installed: $1,200–1,800
- Payback period: 2–4 years
Beyond the electricity savings, most variable-speed pumps run significantly quieter, last longer (fewer operating hours at lower RPMs), and qualify for utility rebates in some OG&E and PSO service territories. Check with your utility provider.