Hayward HeatPro MCHX 140K Heat+Chill
#15 in Large PoolsFull review
For a large pool with a spa or cold plunge, where one unit has to heat in the shoulder seasons and chill in summer.
Hayward
3.1/5
For a Hayward Omni pool where quiet running matters most; single-speed units heat better in cool spring air.
- 120,000 BTUOutput (80 °F air)
- 5.8COP (80 °F air)
- 65,000 BTUOutput (50 °F air)
- Variable speedCompressor
- 40 °FRuns down to
- 5 yr compressorWarranty
Check price at Hayward
Price checked October 26, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Silent Mode and variable speed make it quieter than single-speed units
- Can also cool the water, with active defrost down to 40 °F air
- Full control from the OmniLogic app when paired with Hayward Omni automation
Cons
- Keeps only 54% of its output in 50 °F air, less than single-speed rivals
- Sold only through pool dealers, with no published price
- Heavy at 286 lb
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its pool size. How we rank explains each one.
Specifications
| Model number | HP51202T |
|---|---|
| Heating ratings | |
| Output, 80 °F air / 80% RH / 80 °F water | 120,000 BTU |
| COP, 80 °F air | 5.8 |
| Output, 50 °F air / 63% RH / 80 °F water | 65,000 BTU |
| COP, 50 °F air | 4 |
| Output kept at 50 °F | 54% |
| AHRI certified | Yes |
| Compressor | Variable speed |
| Lowest operating air temperature | 40 °F |
| Defrost | Yes |
| Heat and cool | Yes |
| Installation | |
| Power | 230 V, 60 A breaker |
| Water flow | 28 to 75 gpm |
| Heat exchanger | titanium |
| Refrigerant | R-410A |
| Size (W × D × H) | 33.8 × 36.2 × 44.2 in |
| Weight | 286 lb |
| Features | |
| Wi-Fi | No |
| App | OmniLogic |
| Automation compatibility | Hayward Omni |
| Warranty and models | |
| Warranty | 5 yr compressor, 5 yr parts, 2 yr labor, 10 yr heat exchanger |
| Warranty terms | Expert Line in-ground heat pumps (2026 terms): 5 years parts (compressor included), 2 years field labor (3 years from a Hayward Rewards/Totally Hayward partner), titanium tube 10 years; bought from Hayward or an authorized seller. Expert Line only; no online version. |
| Released | 2022 |
Alternatives in this pool size
Hayward HeatPro MCHX 120,000 BTU
#16 in Large PoolsFull review
A larger heat-only in-ground pool heater with a long dealer warranty, for buyers who don’t need cooling.
Hayward
Pentair UltraTemp 140 Heat/Cool
#18 in Large PoolsFull review
For a large pool in a hot climate that needs cooling as well as heat, on Pentair automation.
Amazon $6,680$6,680
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