Madimack InverEco 66K BTU Inverter Heat Pump (Heat/Cool)
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The Madimack InverECO 66K BTU (SKU INVECO660) is the largest inverter pool heat pump in the InverECO series, with heating and cooling modes for pools up to 15,000 gallons. COP range 6.2 to 11.6. Twin-rotary inverter compressor. Titanium heat exchanger. Operates 32 to 109 degrees F. Sound level 38.4 to 47.1 dB at 10 ft. Power supply 208 to 230V/1Ph/60Hz. Warranty: 25 years heat exchanger, 5 years compressor, 3 years parts and labor.
Madimack InverECO 66K BTU Pool Heat Pump
The Madimack InverECO 66K is the largest model in the InverECO series, designed for pools up to 15,000 gallons. It both heats and cools. Unlike a single-stage heat pump that runs at full power until it shuts off, the InverMAC inverter compressor continuously adjusts output to match air and water temperature, using only the energy the moment requires. The result is lower electricity bills, quieter operation, and more precise temperature control throughout the season.
A note from Lindsay, founder of Nonstop Swim
The InverECO is Madimack's streamlined, budget-friendly heat pump line, and the 66K is the most powerful model in the series. If you have a smaller residential pool up to 15,000 gallons and want a very efficient heating and cooling solution, this is it. The inverter technology modulates output in real time, which is how you get 30% or more in electricity savings vs. a standard heat pump. The optional Wi-Fi module is a nice bonus for scheduling and remote monitoring.
Questions? Reach out anytime. — Lindsay and the Nonstop Swim team
Madimack InverECO 66K Energy Efficiency and COP
- COP up to 11.6 at partial load — the highest in the InverECO series
- InverMAC inverter compressor modulates output continuously, saving 30% or more vs. single-speed models
- Full-speed heating at season start, then low-speed maintenance once target temperature is reached
Madimack InverECO 66K Noise Level and Operating Modes
- Sound level 38.4 to 47.1 dB at 10 ft
- Twin-rotary inverter compressor reduces vibration and noise
- Silence Mode for extra-quiet daily operation
- Boost Mode for maximum heating speed when needed
Heating and Cooling for Pools Up to 15,000 Gallons
- Heating and cooling modes in one unit
- Operates down to 32°F with smart defrost system
- Soft start protects your electrical system
InverECO 66K Heat Pump Construction and Components
- Twisted titanium heat exchanger in PVC housing
- Electronic expansion valve for optimized refrigerant flow
- Optional Wi-Fi module with app control
Madimack InverECO 66K Heat Pump Specifications
Madimack InverECO Pool Heat Pump: All Models
The InverECO is available in four sizes. Other models in the series:
- Madimack InverECO 32K BTU (INVECO320) — up to 7,500 gallons
- Madimack InverECO 40K BTU (INVECO400) — up to 10,000 gallons
- Madimack InverECO 50K BTU (INVECO500)
- 66K BTU (INVECO660) — up to 15,000 gallons (this model)
Madimack InverECO Brochure (PDF)