Cooper&Hunter R454B 20kW Auxiliary Heater / Heat Strip for Multi-Position Air Handler (CH-NREH20KW)
20kW auxiliary electric heater kit for compatible Cooper&Hunter R454B Multi-Position air handlers. Optional backup heat for emergencies and high-capacity supplemental heat in cold weather when heat pump output is limited.
Compatibility is strictly for the Multi-Position Air Handler that uses R454B refrigerant. Verify the air handler model before ordering.
Custom quotes & questions
Overview
- 20kW auxiliary electric heat for compatible Cooper&Hunter R454B Multi-Position air handlers.
- Optional feature that can be purchased separately as backup heat if the primary heating system is not working.
- Supports additional comfort as supplemental / staged heat during low outdoor temperatures (system and thermostat dependent).
- Group configuration: Two groups (10kW + 10kW) with W1 on 10kW.
- Professional installation recommended (line-voltage wiring and code-compliant circuit sizing required).
Model
CH-NREH20KW
Auxiliary heater / heat strip kit
Output
20 kW
High-capacity auxiliary heat
Compatibility
R454B Multi-Position AHU
Confirm AHU model before ordering
Staging behavior depends on thermostat wiring and the air handler control board logic (W1/W2).
Highlights
- 20kW heating output for high supplemental heat demand and large ducted systems.
- Designed for Cooper&Hunter Multi-Position Air Handlers using R454B refrigerant.
- Backup heat option for emergency situations when the primary heat source is unavailable.
- Cold weather support when heat pump capacity is reduced at low outdoor temperatures.
- Professional install recommended for safe, code-compliant installation.
Compatibility
Air handler (AHU) capacity compatibility
CH-NREH20KW (20kW) is approved for the following R454B Multi-Position AHU sizes:
| AHU Capacity | 18K | 24K | 30K | 36K | 48K | 60K |
|---|---|---|---|---|---|---|
| 20kW Heater (CH-NREH20KW) | - | - | Y | Y | Y | Y |
The 20kW kit is typically selected for larger AHU capacities (30K–60K).
System tonnage reference (electric heat availability)
For the listed R454B Multi-Position AHU models below, 20kW auxiliary heat is available from 3–6 ton.
| Electric Heater | 1.5 ton (18,000 BTU/h) |
2 ton (24,000 BTU/h) |
3 ton (30,000 BTU/h) |
4 ton (36,000 BTU/h) |
5 ton (48,000 BTU/h) |
6 ton (60,000 BTU/h) |
|---|---|---|---|---|---|---|
| AHU Model | CH-RS18MAHU | CH-RS24MAHU | CH-RS30MAHU | CH-RS36LCAHU | CH-RS48LCAHU | CH-RS60LCAHU |
| 20kW (CH-NREH20KW) | - | - | Y | Y | Y | Y |
Always confirm the exact indoor air handler model and the heater-kit part number prior to installation.
Important
- R454B AHU only: This heater kit is only compatible with the Multi-Position Air Handler platform using R454B refrigerant.
- Not universal: Do not assume compatibility across other refrigerants, air handler generations, or brands.
- Electrical safety: Installation requires correct circuit sizing, grounding, and adherence to local codes.
- Controls/staging: This kit uses a two-group configuration (10kW + 10kW). Thermostat wiring and control board logic determine staging behavior.
FAQs
What is the CH-NREH20KW used for?
Which AHU sizes can use the 20kW kit?
Do I need a licensed installer?
Questions or a project quote?
