Hayward HeatPro MCHX 120K Heat+Chill
#14 in Large PoolsFull review
For a pool and spa owner who wants one unit to heat in spring and fall and chill a cold plunge in summer.
HaywardThe Hayward HeatPro MCHX 120K Heat+Chill and the Hayward HeatPro MCHX 120,000 BTU are evenly matched, rated 3.2 and 3.2. The Hayward HeatPro MCHX 120K Heat+Chill leads on cold air.
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.
HaywardPrices were last checked October 27, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Hayward HeatPro MCHX 120K Heat+Chill for cold air (heats in air down to 40 °F vs heats in air down to 45 °F).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every large pools pool heat pump; a clear win is highlighted. How we rank explains each one.
| Factor weight | Hayward HeatPro MCHX 120K Heat+Chill | Hayward HeatPro MCHX 120,000 BTU |
|---|---|---|
| Overall rating | 3.2/5 | 3.2/5 |
| Efficiency 25% | 44 COP 5.7 at 80 °F air | 44 COP 5.7 at 80 °F air |
| Cool weather 20% | 49 COP 4 and 62% of its rated output at 50 °F air | 49 COP 4 and 62% of its rated output at 50 °F air |
| Value 20% | 50 no current price (neutral score used) | 50 no current price (neutral score used) |
| Warranty 15% | 65 5-year compressor, 5-year parts, 2-year labor | 65 5-year compressor, 5-year parts, 2-year labor |
| Cold air 10% | 33 heats in air down to 40 °F | 17 heats in air down to 45 °F |
| Noise 10% | 50 noise not published (neutral score used) | 50 noise not published (neutral score used) |
Specifications
| Hayward HeatPro MCHX 120K Heat+Chill | Hayward HeatPro MCHX 120,000 BTU | |
|---|---|---|
| Heating ratings | ||
| Output, 80 °F air / 80% RH / 80 °F water | 120,000 BTU | 120,000 BTU |
| COP, 80 °F air | 5.7 | 5.7 |
| Output, 50 °F air / 63% RH / 80 °F water | 75,000 BTU | 75,000 BTU |
| COP, 50 °F air | 4 | 4 |
| Output kept at 50 °F | 62% | 62% |
| AHRI certified | Yes | Yes |
| Compressor | Single speed | Single speed |
| Lowest operating air temperature | 40 °F | 45 °F |
| Defrost | Yes | No |
| Heat and cool | Yes | No |
| Installation | ||
| Power | 230 V, 65 A breaker | 230 V, 65 A breaker |
| Water flow | 30 to 75 gpm | 30 to 75 gpm |
| Heat exchanger | titanium | titanium |
| Refrigerant | R-410A | R-410A |
| Size (W × D × H) | 30.5 × 33.6 × 44 in | 30.5 × 33.6 × 44 in |
| Weight | 240 lb | 233 lb |
| Features | ||
| Wi-Fi | No | No |
| Warranty and models | ||
| Warranty | 5 yr compressor, 5 yr parts, 2 yr labor, 10 yr heat exchanger | 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. The online W3 (Open Line) version is 1 year parts only, no labor. | 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. The online W3 (Open Line) version is 1 year parts only, no labor. |
| Also sold as | - | Hayward W3HP21205T (Open Line, sold online), Hayward HCB1205T |
| Released | 2024-05 | 2024-05 |