You accept the use of cookies as described in our Privacy Policy by clicking 'OK'.
NAS
NAS Series Air Handlers
Designed for seamless integration with Navien NAZ high-SEER heat pumps, NAS Air Handlers provide efficient heating and cooling with a factory-installed TXV, durable aluminum coil, and multi-position flexibility.
Featuring corrosion-resistant polymer drain pans, swedged copper refrigerant connections, and optional electric heat kits, these air handlers offer superior reliability and performance for residential HVAC applications.
Every component of the NAS Series Air Handlers is designed for efficient operation and long-term performance in residential HVAC systems.
Multi-position
for flexible installation.
Variable speed and
standard ECM versions.
Corrosion-resistant aluminum DX coil installed with TXV.
5–20kW field installed
electric heat kits.
Slide-out blower assembly
for easy maintenance.
Heat resistant
polymer drain pans.
| Match Setup | Capacity | Efficiency | |||||
| Capacity | ODU | IDU | Cooling | Heating | EER2 | SEER2 | HSPF2 |
| 2 ton | NAZ-17V36 | NASS24B | COMING SOON | COMING SOON | COMING SOON | COMING SOON | COMING SOON |
| 3 ton | NAZ-17V36 | NASS36C | COMING SOON | COMING SOON | COMING SOON | COMING SOON | COMING SOON |
| 4 ton | NAZ-17V60 | NASS48D | COMING SOON | COMING SOON | COMING SOON | COMING SOON | COMING SOON |
| 5 ton | NAZ-17V60 | NASS59D | COMING SOON | COMING SOON | COMING SOON | COMING SOON | COMING SOON |
| 2 ton | NAZ-17V36 | NASV24B2T2A1 | 23,400 | 25,000 | 12.40 | 18.00 | 8.75 |
| 3 ton | NAZ-17V36 | NASV36C2T2A1 | 34,400 | 36,000 | 11.70 | 19.50 | 8.75 |
| 4 ton | NAZ-17V60 | NASV48D2T2A1 | 46,500 | 45,000 | 11.40 | 18.0 | 9.30 |
| 5 ton | NAZ-17V60 | NASV59D2T2A1 | 56,000 | 56,000 | 10.45 | 18.50 | 9.10 |
SECM motors offer fixed multi-speed selection, while variable speed ECM motors provide true constant CFM operation for quieter performance, better efficiency, and enhanced humidity management.
The air handler is intended to last for the lifespan of your entire heat pump system, which typically ranges from 15 to 20 years. Other factors may lead to premature replacement, prompting homeowners to weigh the options between replacing only the air handler or investing in a new heat pump system. Factors such as corrosion, leaks, or damage to the coil can affect system efficiency and effectiveness. If your heat pump is still covered by a warranty, replacing just the air handler may be the right option. In such cases, the outdoor portion of your heat pump system may have more years of useful life, extending time until a complete unit replacement is needed. While replacing the air handler alone may seem like a cost-effective solution, it’s wise to consider replacing the air handler and the outdoor unit considering the following situations.
• System Age. If the indoor coil needs replacement and your heat pump is over 8 years old, it’s typically best to replace both components simultaneously, as the system is already halfway through its expected lifespan.
• Availability. It can be difficult to find a new air handler that’s compatible with an older Hp. Aligning these components ensures smooth operation and performance, reducing the chances of problems stemming from mismatched equipment.
• Warranty. If your Heat Pump is no longer under warranty, you’ll be responsible for any repair or replacement expenses, making it wise to consider replacing the entire Heat Pump system. New systems feature warranties that offer coverage against unforeseen repairs for a time period, usually 5-10 years.
• Efficiency. If your current Heat Pump is old and most likely inefficient, it will likely need to be replaced in the next couple of years. Opting for a new higher efficient Heat Pump system can decrease energy costs while improving the comfort level in your home
Yes, they are required to be AHRI matched components. Matched systems and their performance can be found at www.ahridirectory.org
With proper maintenance, air handlers typically last 10–15 years, though factors like usage and environmental conditions can affect service life.