How to size a heat pump for my swimming pool?

Pool Size (ft)Pool Size (m)Water Volume (gal)Water Volume (m³)Recommended Heat Pump (BTU/hr)Recommended Heat Pump (kW)Typical Use Case
10 × 20 ft3 × 6 m~7,500 gal~28 m³50,000–60,000 BTU7–9 kWSmall above-ground / plunge pool
12 × 24 ft3.6 × 7.3 m~10,800 gal~41 m³65,000–75,000 BTU9–12 kWSmall in-ground / residential
14 × 28 ft4.3 × 8.5 m~14,700 gal~56 m³80,000–90,000 BTU12–15 kWStandard family pool
16 × 32 ft4.9 × 9.8 m~19,200 gal~73 m³100,000–120,000 BTU15–20 kWMedium in-ground pool
18 × 36 ft5.5 × 11 m~24,300 gal~92 m³130,000–150,000 BTU20–25 kWLarge residential pool
20 × 40 ft6 × 12 m~30,000 gal~114 m³160,000–180,000 BTU25–30 kWLarge / semi-commercial pool
25 × 50 ft7.6 × 15.2 m~46,900 gal~178 m³200,000–250,000 BTU35–45 kWCommercial / hotel pool

Note: Recommendations assume average climate, 20°F (11°C) temperature rise, and 8-hour daily operation. Adjust upward for colder climates, windy areas, or year-round use.

Kolant offers a full range of pool heat pumps from 7 kW to 45 kW (24,000–154,000 BTU), covering residential plunge pools to commercial aquatic facilities. All models feature:
  • Premium titanium heat exchangers (saltwater compatible)
  • High COP up to 6.0
  • Quiet operation
  • Wide operating temperature range (−7°C to 43°C ambient)
For personalized sizing, send us your pool dimensions, location, and usage requirements, and our technical team will recommend the optimal Kolant model for your project.

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