Pool Pump Buying Guide: How to Pick the Right Pump for Your Pool
This hub is where every pump-category guide on PoolPump.com will live — variable-speed, above-ground, and pool heat pumps, broken out by brand and use case. We’re building it out guide by guide; here’s the short version to get you moving today.
Start with your pool type
In-ground pool, upgrading or replacing a pump: almost every state and utility is pushing toward variable-speed (VS) pumps because they cut pump energy use 50–80% versus a single-speed pump running full-time. If your current pump is single-speed and more than a few years old, a VS replacement usually pays for itself in 1–3 seasons.
Above-ground pool: you’re typically choosing between a standalone pump matched to your existing filter, or a pump-and-filter combo unit sized for above-ground/Intex-style pools. Sizing is simpler here — match the pump’s rated flow to your pool’s turnover need, and don’t oversize; above-ground plumbing can’t handle the head pressure a big in-ground pump generates.
Extending your swim season: a pool heat pump is a separate purchase from your circulation pump, sized by pool surface area, climate, and desired temperature rise — not by gallons.
How to size a pump
The rule of thumb: turn over your entire pool volume roughly once every 8 hours. Divide your pool’s gallons by (turnover hours × 60) to get your target flow rate in gallons per minute (GPM), then match that GPM against a pump’s rated flow at your plumbing’s head pressure — not just its horsepower label, which can be misleading across brands. Use our sizing calculator to get a starting GPM and HP range in under a minute.
What to check before you buy
- Flow rate at your head pressure, not just nameplate horsepower — two “1.5 HP” pumps from different brands can perform very differently.
- Variable-speed vs. single-speed — VS costs more upfront ($700–1,200 installed is typical) but wins on total cost of ownership for nearly every in-ground pool.
- Compatibility with your existing plumbing, filter, and any automation/salt system you’re running.
- Warranty terms — read the manufacturer’s actual warranty language, not just the headline number; motor and seal coverage often differ.
- Local rebates — some utilities offer rebates for switching to variable-speed. Availability and amounts vary — confirm with your utility before you buy, not after.
By brand
Once you’ve narrowed by category, cross-check by manufacturer — our brand hubs cover Hayward, Pentair, Intex, and Bestway lineups, common failure points, and how each brand’s warranty actually plays out in practice.
Pump already dead?
If you’re here because your current pump quit and you need it fixed or replaced fast, skip the research and get a free repair quote — we’ll connect you with a local pro who can diagnose repair-vs-replace on site.
Where to shop
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- Pumps, filters, and parts from a pool specialist: Doheny’s is a dedicated pool-supply retailer, carrying pumps, filters, motors, parts, and chemicals in one catalog rather than a general marketplace, and it ships free on orders over $50. Shop pool pumps and parts at Doheny’s. Shipping terms and pricing change without notice, so confirm both on their site before you order.
- Variable-speed pumps: browse current listings and compare rated flow, warranty length, and price before you buy — shop variable-speed pool pumps on Amazon.
- Above-ground pump-and-filter combos: check that the combo’s rated flow matches your pool’s turnover need, not just its box size — shop above-ground pool pump and filter combos on Amazon.
- Motor replacement: confirm the frame size and horsepower match your existing pump body before ordering — shop pool pump motor replacements on Amazon.
- Timers: mechanical and digital options both work — pick based on whether you want app/automation control — shop pool pump timers on Amazon.