
The NAE Series reimagines traditional air conditioning by blending mechanical and evaporative cooling technologies for next-level performance. By incorporating an intermittent condenser spray feature, this innovative system unlocks significant efficiency gains without adding unnecessary complexity.
At the core of the NAE air conditioner is Navien’s proprietary Hydro-Boost circulator technology. This intelligent system automatically applies treated water to the condenser coil during cooling, enhancing heat transfer and unlocking higher efficiency when operating conditions call for it.
Rather than relying on oversized components or complex add-ons, Hydro-Boost enhances traditional compressor- and fan-based cooling with precisely controlled, water-assisted performance, delivering efficiency gains only when they provide real value.

The microchannel slab coil is automatically and intermittently misted with treated water based on system conditions.
Precisely controlled water application lowers coil temperatures, improving heat rejection and overall system efficiency.
The result is a smart hybrid of mechanical cooling (compressor + fan) and evaporative cooling (water misting), without continuous water use.


NAE Hydro AC reduces energy consumption while maintaining reliable comfort, even during peak summer demand. This is high-efficiency cooling that doesn’t cut corners, just energy costs.
*Note: Performance boost based on Navien internal testing. Not an industry-certified rating. Results vary by installation and conditions.
Efficiency
Prioritizes lower power consumption for steady, energy-conscious cooling.
Normal
Provides balanced performance for everyday comfort and quiet operation.
Performance
Increases cooling and dehumidification capacity for added comfort during warmer or more humid conditions.
Boost
Runs the system at maximum capacity to cool the space as quickly as possible when needed.

Unlike traditional air conditioners with fixed output, the NAE Series uses inverter-driven, variable-capacity technology to adapt cooling output to the needs of the home.
Navien’s NAE Series is designed around two outdoor models, each covering a range of cooling capacities. The final system capacity is determined by the matched indoor equipment and setup, allowing the system to operate efficiently across a wider range of conditions.
Benefits for contractors: fewer SKUs to manage and greater flexibility when designing and sizing systems.
Benefits for homeowners: quieter, more efficient cooling that adjusts to the home’s actual needs.
The NAE Series is designed to be matched with Navien indoor equipment (NAM cased coils, NPF Hydro-furnaces, and select NAS air handlers) to deliver rated performance, optimized efficiency, and long-term system reliability.
Navien also offers the NAA Series, a variable-capacity air conditioner designed for high efficiency and consistent comfort without water-assisted cooling.
Hydro-Boost enhances traditional variable-speed air conditioning by adding intelligently controlled, water-assisted cooling. Unlike systems that rely solely on larger compressors or coils, Hydro-Boost improves heat rejection only when operating conditions support meaningful efficiency gains—without continuous water use or added system complexity.
The NAE Series uses inverter-driven, variable-capacity technology that allows each outdoor unit to operate across a range of cooling outputs. By pairing the outdoor unit with matched indoor equipment, the system can be configured for different capacities while continuously adjusting output to meet real-time demand. This reduces oversizing, improves comfort, and simplifies model selection.
Yes. The NAE Series is designed to adapt to a wide range of climates by combining variable-speed operation, capacity matching, and optional Hydro-Boost technology. This allows the system to perform efficiently in both dry and humid environments while maintaining consistent comfort.