This is a wall-sleeve heat pump air conditioner and heater for hotel rooms, coastal condos, or additions where central ductwork isn't available. It's built for property managers and homeowners near saltwater or coastal air who need self-contained, per-room climate control with extra corrosion protection.
The PMH123J35CXXX is Amana's DigiAIR heat pump PTAC chassis with Feature Code C, which designates seacoast corrosion protection for the cabinet and coil coating. This makes it a fit for coastal hospitality properties, condos, and residences where salt air accelerates corrosion on standard chassis. The heat pump cooling and heating cycle is supplemented by a 3.5/3.0 kW electric heat strip for cold-weather backup, and all units on this platform meet or exceed ASHRAE 90.1 efficiency requirements. Note: If you would like to review the manufacturer Product Specifications, Warranty, Brochure, etc., for this system, please refer to the "Resources (System Manuals and Warranty)" Tab above on this page.
- Requires a 230/208V circuit rated for 20A (MOP), with an MCA of 19.5A. Not compatible with 115V circuits.
- Ships with a factory-installed NEMA 6-20P power cord with LCDI device per UL 484 (applies to units under 250V).
- Fits the industry-standard wall sleeve opening: 42 in wide x 16-1/16 in high.
- Wall Sleeve is NOT included — order separately (e.g., WS900E, WS900QW, or WS900SC seacoast sleeve for this corrosion-protected chassis).
- Exterior Architectural Grille is NOT included — order separately (SGK, AGK, or PGK series).
- Not suitable as a substitute for 265V hardwire applications. The 265V commercial sibling of this chassis is model PMH124J, which requires an Amana sub-base (PTSB4**E series) or hard-wire kit PTPWHWK4 with disconnect switch PSHW04A, sold separately.
- Not a drop-in replacement for non-standard or custom sleeve openings — verify existing sleeve dimensions before ordering a replacement chassis.
The technical friction on any seacoast-rated PTAC swap is condensate drainage combined with matching the receptacle to the heater's actual amp draw — a 20A NEMA 6-20 configuration here, not a generic 15A cord. If the wall sleeve was installed years ago for a lower-amp chassis, verify the receptacle against a NEMA Receptacle Chart before setting the new unit, or you risk an overloaded circuit. For drainage, pitch the sleeve 1/4 bubble toward the outside wall using a Torpedo Level — this keeps condensate from tracking back into the drywall cavity over time, which is the leading cause of hidden water damage in hospitality wall-sleeve installs. Confirm the sleeve extends a minimum of 1/4 in beyond the exterior wall per the framing diagram, and document breaker sizing against NEC receptacle code as part of your property management commissioning checklist.
Key Benefits:
- Seacoast corrosion protection (Feature Code C) on cabinet and coil for extended service life near saltwater environments.
- Heat pump operation delivers 10,600/10,400 BTU/h of heating from the compressor cycle before the electric heat strip engages, reducing electric heat runtime in moderate outdoor temperatures.
- EER of 11.3/11.5 and COP of 3.3/3.3 provide verified efficiency data for side-by-side comparison against other PTHP chassis.
- Fresh air intake of 25-35 CFM supports make-up air ventilation in guest rooms without a separate ventilation system.
- Single-stage 3.5/3.0 kW electric heat backup is sized to the factory 20A NEMA 6-20P cord, reducing field wiring mismatches.
- R-32 refrigerant platform meets or exceeds ASHRAE 90.1 efficiency standards.
| Spec | Value | Unit |
|---|---|---|
| System Type | PTHP (Packaged Terminal Heat Pump) | — |
| Corrosion Protection | Seacoast Protected (Feature Code C) | — |
| Voltage | 230/208 | V |
| Cooling Capacity | 11,400/11,200 | BTU/h |
| Cooling Amps | 6.7/6.7 | A |
| Cooling Watts | 1,005/970 | W |
| EER | 11.3/11.5 | — |
| Heating Capacity (Heat Pump) | 10,600/10,400 | BTU/h |
| Heating Amps | 6.7 | A |
| Heating Watts | 940/920 | W |
| COP | 3.3/3.3 | — |
| CFM Cooling | 291/293 | CFM |
| CFM Heating | 320/323 | CFM |
| Fresh Air CFM | 25-35 | CFM |
| Electric Heat Size | 3.5/3.0 | kW |
| Electric Heat Stages | 1 | — |
| Auxiliary Heat Output at 230V | 12,000 | BTU/h |
| Auxiliary Heat Output at 208V | 9,900 | BTU/h |
| Total Heater Watts | 3,570/2,935 | W |
| Total Heater Amps | 15.5/14.1 | A |
| MCA | 19.5 | A |
| MOP | 20 | A |
| NEMA Plug Type | 6-20P | — |
| Power Cord Type | LCDI power cord per UL 484 (units under 250V) | — |
| Refrigerant Type | R-32 | — |
| Wall Sleeve Dimensions | Standard 42 x 16-1/16 | in |
| Wall Sleeve Included | Not Included | — |
| Exterior Architectural Grille Included | Not Included | — |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
- Compatible with 230/208V circuits via NEMA 6-20 plug configuration.
- Fits standard 42-inch x 16-1/16-inch wall sleeve openings, including seacoast-rated WS900SC sleeves.
- Not compatible with 115V circuits.
- Not compatible with 265V hardwire-only applications — see 265V sibling model PMH124J, which requires an Amana sub-base (PTSB4**E series) or hard-wire kit PTPWHWK4 with disconnect PSHW04A, sold separately.
- Wall Sleeve NOT included with this listing.
- Exterior Architectural Grille NOT included with this listing.
- Not a drop-in replacement for non-standard or custom sleeve openings; deep/oversized sleeve variants (16-40 in) are available separately if your opening differs from the standard.
| Compliance / Environment Attribute | Value |
|---|---|
| Refrigerant Type | R-32 |
| Efficiency Standard | Meets or exceeds ASHRAE 90.1 |
| Electrical Compliance | LCDI power cord per UL 484 (units under 250V) |
| Voltage Operating Range | Min 197V / Max 253V (230/208V models) |
FAQ
Is the wall sleeve included with this unit?
No. The wall sleeve is sold separately. This chassis fits the industry-standard 42 in x 16-1/16 in wall sleeve opening (WS900E, WS900QW, WS900SC seacoast, and other WS900-series sleeves), but the sleeve and exterior grille are not part of this listing.
What breaker size and plug type does this unit require?
With the 3.5/3.0 kW electric heat installed, this unit has an MCA of 19.5A and requires a 20A breaker (MOP). It ships with a factory-installed NEMA 6-20P power cord and LCDI device per UL 484, since it operates under 250V.
Can this be hardwired for 265V commercial applications?
No. This model is rated 230/208V, not 265V. The 265V commercial version of this chassis is model PMH124J, which requires an Amana sub-base (PTSB4**E series) or hard-wire kit PTPWHWK4 with disconnect switch PSHW04A, sold separately. Do not attempt to hardwire this 230/208V unit as a substitute.
Does this require a licensed electrician or HVAC professional to install and keep the warranty valid?
Exact installer and licensing requirements are detailed in the manufacturer warranty document. Refer to the "Resources (System Manuals and Warranty)" Tab above on this page for those terms.
Will this fit a standard 42-inch by 16-inch wall sleeve opening?
Yes. This chassis is designed for the industry-standard 42 in wide x 16-1/16 in high wall sleeve opening. It is not a drop-in fit for custom or non-standard openings unless paired with one of the deep or oversized WS9XX sleeve variants.
Warranty & Registration
This unit carries a 1-Year Repair/Replace warranty and a 5-Year Parts Limited Warranty. Usage-limit distinctions between commercial hospitality and residential applications, along with full registration steps, are set out in the manufacturer warranty document. Refer to the "Resources (System Manuals and Warranty)" Tab above on this page for exact terms before you install or place this unit into hospitality service.
