Mitsubishi 5kW Electric Heat Strip for SVZ Small-Cabinet Air Handlers, EH05-SVZ-S
The Mitsubishi EH05-SVZ-S is a 5kW single-stage electric heat kit designed for the small-cabinet SVZ multi-position air handler family: the SVZ-KP12NA, SVZ-KP18NA and SVZ-KP24NA, plus the newer R454B Mitsubishi SVZ-AP24NL air handler. Rated at 5.0 kW on 240V and 3.8 kW on 208V, this heat strip bolts directly to the air handler outlet and gives a ducted Mitsubishi heat pump a reliable source of supplemental and emergency resistance heat. It is the lightest-draw kit that fits every small SVZ cabinet, which makes it a natural fit for homeowners, HVAC contractors and property managers who want backup heat without a major electrical upgrade.
Is a 5kW Heat Strip the Right Size?
A 5kW strip is best suited to systems where the heat pump handles most of the heating load and the electric heat only needs to fill gaps: defrost cycles, the coldest mornings of the year, or an emergency-heat call if the outdoor unit is down. It is also the largest kit Mitsubishi approves for the 1-ton SVZ-KP12NA, so on that air handler it is the go-to supplemental heat option.
The right amount of auxiliary heat depends on the building's heat loss, insulation and air tightness, the local winter design temperature, the heat pump's low-ambient output, where the ductwork runs, and how much electrical capacity is available at the panel. At 20.8 heater amps on 240V with a 30A maximum overcurrent device, the EH05-SVZ-S often fits panels that can't support a larger kit.
Ideal for: SVZ-KP12NA, SVZ-KP18NA and SVZ-KP24NA installations in mild-to-moderate climates, including condos, apartments, home additions, smaller single-family homes and light-commercial zones that need modest backup heat.
Need more capacity? Step up to the Mitsubishi 8kW Heat Strip, EH08-SVZ-S for SVZ-KP18NA and SVZ-KP24NA air handlers that need two-stage supplemental heat in colder climates.
Recommended heat kit applications are general guidelines only. Actual supplemental heat requirements depend on insulation, climate, heat pump capacity, duct design, and available electrical service. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Electric Heat Kit | EH05-SVZ-S — 5kW Single-Stage Heat Strip, Small Cabinet |
|---|---|
| Compatible Air Handlers | SVZ-KP12NA, SVZ-KP18NA, SVZ-KP24NA, SVZ-AP24NL |
| Application | Supplemental & Emergency Electric Heat for Mitsubishi SVZ Multi-Position Air Handlers |
| Heat Output | 5.0 kW at 240V / 3.8 kW at 208V |
| Staging | Single Stage |
| Factory Breaker | 30A (serves as disconnect switch) |
| Electrical | 208/240V, 60 Hz |
| MCA / MOP (Heater + Air Handler Motor) | 29A / 30A at 240V; 25.6A / 30A at 208V |
The EH05-SVZ-S ships as a self-contained heater module with its own factory-installed 30A breaker, sized to match the 17-inch-wide small SVZ cabinet. Because the connecting wiring is already bundled inside the SVZ air handler, installers mount the kit on the outlet, run a dedicated power supply, and plug into the air handler's single-stage heater connection. It's a clean way to add backup heat to a new or existing Mitsubishi ducted heat pump system.
Heat Strip & Air Handler Integration Features
EH05-SVZ-S 5kW Electric Heat Kit
- 5.0 kW of resistance heat at 240V, 3.8 kW at 208V
- Single-stage operation for simple supplemental heat control
- Factory-installed 30A circuit breaker doubles as the kit disconnect
- 20.8 heater amps at 240V (18.1A at 208V)
- Roughly 17,060 BTU/h of heat at 240V
- Maximum outlet air temperature of 200°F
- Zero clearance to combustible materials
- Compact module: 17" wide x 6" tall x 21-1/4" deep
- 14-13/16" duct opening matched to the small SVZ cabinet
- Works with the optional ETC-211020-MIT auxiliary heat lockout
SVZ Small-Cabinet Air Handler Installation
- Mounts directly on the outlet of the SVZ-KP12NA, KP18NA or KP24NA
- Supports upflow, downflow, horizontal-left and horizontal-right setups
- Breaker rotates for horizontal-left installations
- Heater wiring arrives pre-bundled inside the SVZ cabinet
- Single-stage kit uses only the CN24-1 heater connection
- Requires a dedicated power supply, not fed from the outdoor unit
- Building breaker sized to the MOP for the supply voltage
- Downflow installs require a non-combustible floor
- Rated to 0.60 in. WG maximum external static with heater installed
- Add 0.20 in. WG to the duct design to account for the heater
Frequently Asked Questions
Which Mitsubishi air handlers accept the EH05-SVZ-S?
Mitsubishi approves the EH05-SVZ-S for the small-cabinet SVZ-KP12NA, SVZ-KP18NA and SVZ-KP24NA multi-position air handlers. It is also listed as an accessory for the newer SVZ-AP24NL. No other combinations are approved.
How much heat does the EH05-SVZ-S produce on 208V power?
On a 208V supply the kit delivers 3.8 kW, or roughly 12,970 BTU/h. On 240V it delivers its full 5.0 kW rating, or about 17,060 BTU/h.
What size circuit breaker does the 5kW SVZ heat kit need?
With the air handler motor included, the maximum overcurrent protection is 30A at both 208V and 240V. The minimum circuit ampacity is 29A at 240V and 25.6A at 208V. The kit's built-in 30A breaker is a disconnect only, so the building breaker must still be sized to the MOP.
Can the EH05-SVZ-S go on an SVZ-KP30NA or SVZ-KP36NA?
No. The "S" kits fit only the small SVZ cabinet. The medium-cabinet SVZ-KP30NA and SVZ-KP36NA use the wider EH05-SVZ-M, EH08-SVZ-M or EH10-SVZ-M heat kits.
Does the EH05-SVZ-S work in a downflow installation?
Yes. The kit can be installed upflow, downflow, horizontal-left or horizontal-right. Downflow installations must sit on a non-combustible floor, and horizontal-left installations require rotating the breaker.
Is the 5kW heat strip single stage or two stage?
The EH05-SVZ-S is a single-stage heater and uses only the CN24-1 connection on the SVZ air handler. If you want staged electric heat on an SVZ-KP18NA or SVZ-KP24NA, the 8kW EH08-SVZ-S provides two stages.
