Navien NAM Series Cased Coil
The critical indoor component that links your Navien air conditioner or heat pump to the NPF Hydro-Furnace. AHRI-matched for maximum system efficiency and built-in A2L refrigerant safety.
The Indoor Coil That Completes Your Navien System
The NAM Cased Coil sits inside your home on top of the NPF Hydro-Furnace (or another gas/electric furnace), connecting your outdoor AC or heat pump to the indoor air distribution system. It’s the essential bridge that makes the whole system work.
The NAM is AHRI-matched with the NAA Air Conditioner, NAE Hydro-Boost AC, and NAZ Heat Pump — ensuring the system achieves its published SEER2 and HSPF2 efficiency ratings. It’s provided in traditional furnace widths, making it compatible with conventional furnace retrofits.
- Multi-position: upflow, downflow, and horizontal
- Corrosion-resistant aluminum DX refrigerant coil
- Rifled aluminum tubes with lanced aluminum fins
- Factory installed and calibrated TXV expansion device
- Built-in A2L refrigerant sensor and mitigation control
- Thick foil-faced insulation — easy cleaning
- Full perimeter duct flange for air-tight installation
- Corrosion- and heat-resistant polymer drain pans
- Copper sweat refrigerant connections
- Shipped with nitrogen holding charge
NAM Cased Coil Models & Specifications
| Model | Capacity | Width | Height | Depth |
|---|---|---|---|---|
| NAM24B | 2 Ton | 17.5″ | 20″ | 21″ |
| NAM36B | 3 Ton | 17.5″ | 20″ | 21″ |
| NAM36C | 3 Ton | 21″ | 21″ | 20″ |
| NAM48C | 4 Ton | 21″ | 34″ | 21″ |
| NAM59C | 5 Ton | 21″ | 34″ | 21″ |
| NAM59D | 5 Ton | 24.5″ | 34″ | 21″ |
All NAM models use R-454B refrigerant with rifled aluminum tubes and lanced aluminum fins. Certifications: see navieninc.com for current listings.
Need a Replacement Coil or Full System?
Whether you need a NAM cased coil as part of a new Navien system or as a replacement for an existing installation, ER Plumbing & Heating can supply and install the right model for your home.
- Model selection for your existing furnace width
- Complete NAA + NAM + NPF system installs
- Retrofit into existing ductwork
- A2L sensor and leak mitigation setup included
Also explore: NAA Air Conditioner · NAZ Heat Pump · NPF Hydro-Furnace