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: the long-running SQ145 and SQ225 are both discontinued, replaced by the SQ140R and SQ200R respectively. Here’s how the current four-model lineup compares.
Quick answer
The AquaCal SQ160R (128,000 BTU, 5.7 COP, heat/cool, about $5,538) is the best overall AquaCal heat pump for most in-ground pools — a heat/cool unit with built-in PoolSync WiFi monitoring. Downsize to the SQ125 (101,000 BTU, about $5,080) or the newer SQ140R (114,000 BTU, heat/cool, roughly $4,650-$6,790) for a smaller pool or spa, or step up to the SQ200R (138,000 BTU, 6.1 COP, street price around $6,450 against a $9,416 MSRP) for anything over roughly 25,000 gallons — the SQ200R is AquaCal’s current large-capacity model, having directly replaced the discontinued SQ225. All 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 SQ140R | 114,000 | 5.7 | Heat & cool | ~$4,650-$6,790 |
| AquaCal SQ160R | 128,000 | 5.7 | Heat & cool | ~$5,538 |
| AquaCal SQ200R | 138,000 | 6.1 | Heat & cool | ~$6,450 street, $9,416 MSRP |
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, sold alongside the newer SQ140R (the model that actually replaced the older SQ145) as a larger heat/cool step-up.
- 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.
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 SQ140R, SQ160R, and SQ200R.
- 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 SQ200R — Best for Large Pools
AquaCal HeatWave SuperQuiet SQ200R (138,000 BTU)
- AquaCal's current large-capacity HeatWave SuperQuiet model, built for pools over roughly 25,000 gallons or fast recovery after backwashing.
- Directly replaces the discontinued SQ225 (143,000 BTU) — per the authorized-dealer parts listing, the SQ225 is explicitly marked "Discontinued and Replaced by" the SQ200R. Slightly less raw BTU output (138,000 vs. 143,000) but a notably higher COP (6.1 vs. the SQ225's roughly 5.6), plus heat/cool switching the SQ225 didn't have.
- MSRP runs $9,415.55 per current authorized-dealer pricing, though 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 SQ200R’s extra BTU headroom keeps heat-up times reasonable where a smaller unit would run constantly.
What happened to the SQ145 and SQ225?
AquaCal has refreshed its mid- and large-size lineup. The long-running SQ145 (119,000 BTU) — still the pick cited in our best pool heat pump roundup — is discontinued and directly replaced by the SQ140R (114,000 BTU, 5.7 COP, heat/cool, roughly $4,650-$6,790), per the current authorized-dealer parts listing. That’s a correction to an earlier version of this guide, which had named the SQ160R as the SQ145’s replacement — the SQ160R is actually a separate, larger unit that was already sold alongside the SQ145, not its direct successor. Separately, the SQ225 (143,000 BTU) is discontinued and replaced by the SQ200R (138,000 BTU, 6.1 COP), covered above. Some retailers are still clearing SQ145 and SQ225 stock, which can be a legitimate buy if the deal is good enough, but SQ140R and SQ200R are the models AquaCal itself is now shipping in those size classes.
The bottom line
The AquaCal SQ160R is the best all-around buy in the current lineup — a competitive 5.7 COP and heat/cool flexibility that matters most in hot climates. Downsize to the SQ125 or the newer SQ140R for a spa or smaller pool, or step up to the SQ200R if you’re heating a large in-ground pool and want to shop around for street pricing well under the MSRP. All four 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 (see our best pool heater for salt water pools roundup for how it compares to other titanium and cupro-nickel picks). If you’re weighing AquaCal against the bigger names, our Hayward vs. Pentair comparison covers how those two stack up on price and COP. If you’re not sure the SQ200R is the right size for your pool, our best inground pool heater by gallon count guide tiers picks by pool size instead of by brand. Note this guide only covers the SQ-prefixed SuperQuiet line — AquaCal also sells a standard-compressor HeatWave line (HW prefix) and a newer TropiCal Inverter line, with at least one retailer blurring the SuperQuiet name across all three; see our AquaCal HeatWave review for the full breakdown.
Last updated October 2026: corrected the SQ145’s actual replacement model (SQ140R, not SQ160R as a prior version of this guide stated) and replaced the now-discontinued SQ225 with its real successor, the SQ200R (138,000 BTU, 6.1 COP) — both corrections verified directly against an authorized AquaCal dealer’s parts-replacement listings.