AquaCal built its reputation on heat pumps that hold up in Florida and Gulf Coast conditions — hot, humid, and often salt-chlorinated. The HeatWave SuperQuiet lineup has been refreshed for 2025-2026, with the SQ160R replacing the long-running SQ145 as the brand’s mid-size flagship. Here’s how the current three-model lineup compares.
Quick answer
The AquaCal SQ160R (128,000 BTU, 5.7 COP, heat/cool, ~$5,316) is the best overall AquaCal heat pump for most in-ground pools — it’s the newer replacement for the SQ145 and adds heat/cool switching plus built-in PoolSync WiFi monitoring. Downsize to the SQ125 (101,000 BTU, MAAP price around $5,080) for a smaller pool or spa, or step up to the SQ225 (143,000 BTU, MSRP $9,416) for anything over roughly 25,000 gallons. All three use AquaCal’s titanium heat exchanger, which carries its own lifetime warranty separate from the 2-year parts/labor coverage on the rest of the unit.
AquaCal HeatWave SuperQuiet lineup at a glance
| Model | BTU | COP | Heat/Cool | Price |
|---|---|---|---|---|
| AquaCal SQ125 | 101,000 | ~5.8 | Heat only | ~$5,080 (MAAP) |
| AquaCal SQ160R | 128,000 | 5.7 | Heat & cool | ~$5,316 |
| AquaCal SQ225 | 143,000 | ~5.6 | Heat only | ~$6,450-$9,416 |
MAAP = manufacturer's approved advertised price. AquaCal's own pricing docs list a higher MSRP for several models; MAAP/street pricing from authorized dealers is what most buyers actually pay. Get a current quote before ordering — heat pump pricing moves with copper and refrigerant costs.
1. AquaCal SQ160R — Best Overall
AquaCal HeatWave SuperQuiet SQ160R (128,000 BTU)
- AquaCal's current mid-size flagship, replacing the older SQ145 with more BTU output and heat/cool switching in one unit.
- Titanium heat exchanger rated for pools up to roughly 30,000 gallons, with built-in PoolSync WiFi for remote monitoring and app control.
- Runs at 55 dB and adds only about 2 PSI of flow restriction at 45 GPM, so it won't choke an existing pump/filter setup.
Warm up your pool sooner — try Amazon Prime free for 30 days and get your pool heater delivered in two days. The SQ160R’s 5.7 COP puts it in the same efficiency class as the Hayward HeatPro and Pentair-owned Gulfstream HE-RA lineup, and the added heat/cool mode is genuinely useful in Gulf Coast climates where a pool can get uncomfortably warm mid-summer.
2. AquaCal SQ125 — Best for Smaller Pools
AquaCal HeatWave SuperQuiet SQ125 (101,000 BTU)
- Right-sized for spas and pools under roughly 15,000 gallons — enough BTU for steady heat without paying for capacity you won't use.
- Same titanium heat exchanger and lifetime exchanger warranty as the larger SQ160R and SQ225.
- Heat-only design (no cooling mode), which keeps it slightly simpler and cheaper to service than the SQ160R.
If your pool is under 15,000 gallons or you’re mainly heating a spa, the SQ125 heats just as effectively as the bigger models at a lower upfront cost and a smaller 208-230V circuit requirement.
3. AquaCal SQ225 — Best for Large Pools
AquaCal HeatWave SuperQuiet SQ225 (143,000 BTU)
- The largest single-unit HeatWave SuperQuiet model, built for pools over roughly 25,000 gallons or fast recovery after backwashing.
- MSRP runs $9,416 per AquaCal's own pricing sheet, though authorized-dealer street pricing has been seen closer to $6,450 — call around before assuming the sticker price is final.
- Same titanium exchanger platform as the smaller models, so reliability in salt-chlorinated water is unchanged at the larger size.
For anything approaching 25,000-30,000 gallons, or a pool that needs to recover quickly after a cold snap, the SQ225’s extra BTU headroom keeps heat-up times reasonable where a smaller unit would run constantly.
What happened to the SQ145?
AquaCal’s long-running SQ145 (119,000 BTU) — still the pick cited in our best pool heat pump roundup — is being phased out in favor of the SQ160R. The newer model delivers more output (128,000 vs. 119,000 BTU) at a comparable COP, and adds heat/cool switching and PoolSync WiFi that the SQ145 never had. Some retailers are still clearing SQ145 stock at a discount, which can be a legitimate buy if you don’t need the cooling mode, but the SQ160R is the model AquaCal itself is now shipping.
The bottom line
The AquaCal SQ160R is the best all-around buy in the current lineup — more BTU than the outgoing SQ145, a competitive 5.7 COP, and heat/cool flexibility that matters most in hot climates. Downsize to the SQ125 for a spa or smaller pool, or step up to the SQ225 if you’re heating a large in-ground pool and want to shop around for street pricing well under the MSRP. All three share AquaCal’s titanium heat exchanger and lifetime exchanger warranty, which is the core reason the brand remains a go-to for salt-pool owners in humid climates. If you’re weighing AquaCal against the bigger names, our Hayward vs. Pentair comparison covers how those two stack up on price and COP.