Direct Drop-In Replacement
First Co and Amana VTAC - Multi Mfg SPV-HP Replacement Guide
Upgrade your aging vertical terminal unit with a next-generation Multi Mfg inverter-driven heat pump - same wall sleeve, no modifications, no guesswork.
True Drop-In Fit
Multi Mfg SPV units slide directly into your existing wall sleeve - same footprint, zero modifications required.
Inverter-Driven Efficiency
Variable-speed inverter compressor technology delivers dramatically higher efficiency and quieter operation than the fixed-speed units they replace.
Many In Stock and Ready to Ship
Popular SPV-HP configurations are stocked and ship fast - ideal for urgent replacements in hotels, apartments, and senior housing.
Heat Pump + Electric Backup
All SPV-HP models deliver heat pump heating year-round, with automatic electric backup heat when needed.
Why Upgrade to Multi Mfg SPV-HP?
First Company manufactured vertical terminal units under their own SPX brand as well as for Amana, who sold the same product line as the VTC (cooling + electric heat) and VTH (heat pump) series. Both product lines share the same wall sleeve dimensions and closet footprint, making the Multi Mfg SPV-HP series a direct drop-in replacement for either brand.
Where the original units used fixed-speed compressors, the Multi Mfg SPV-HP uses an inverter-driven variable-speed compressor that modulates output to match the actual load - delivering significantly higher efficiency, lower sound levels, and more precise temperature control. The 12SPV and 1824SPV series are both Cold Climate Energy Star certified, with the 12SPV rated at 10.5 EER2 / 17.1 SEER2 / 8.6 HSPF2 and the 1824SPV rated at 9.8 EER2 / 15.5 SEER2 / 9.1 HSPF2. The 9SPV series does not carry Cold Climate Energy Star certification.
The Multi Mfg SPV-HP is also compatible with most existing 2-stage wall thermostats, so in many cases you can keep the thermostat already installed in the room. This makes the transition even simpler for property managers looking to upgrade units across multiple rooms or floors.
How to use this guide:
Find your existing model number on the unit nameplate. Locate it in the appropriate table below and click View Product to shop. If the button says Contact Us, that configuration is a special order - reach out and we will get you a quote.
9,000 BTU Class - First Co 9SPX Series
Covers 9SPXR, 9SPXA, and 9SPXB generations, including cooling-only and heat pump variants.
12,000 BTU Class - First Co 12SPX Series
Covers 12SPXR, 12SPXA, 12SPXA-X (ECM), and 12SPXB generations, including cooling-only and heat pump variants.
18,000 and 24,000 BTU Class - First Co 18SPX and 24SPX Series
Both 18SPX and 24SPX units are replaced by the Multi Mfg 1824SPV-HP-D series. Covers SPXR, SPXA, SPXA-X (ECM), and SPXB generations.
9,000 BTU Class - Amana VTC093 and VTH093
VTC093E = cooling + electric heat only. VTH093E = heat pump with electric backup heat.
12,000 BTU Class - Amana VTC123 and VTH123
VTC123E = cooling + electric heat only. VTH123E = heat pump with electric backup heat.
18,000 and 24,000 BTU Class - Amana VTC183, VTC243, VTH183, VTH243
All four models are replaced by the Multi Mfg 1824SPV-HP-D series. VTC = cooling + electric heat only; VTH = heat pump with electric backup heat.
Model Number Reference
First Co SPX Suffix Key
| Suffix / Example | Meaning |
|---|---|
| 0 (e.g. 12SPXR0) | Cooling only - no electric heat strip |
| 2, 3, 4, 5... (e.g. 12SPXR3) | Electric resistance heat; number indicates approximate kW size |
| -HP (e.g. 12SPXR3-HP) | Heat pump with electric backup heat |
| -X (e.g. 12SPXA-X3) | ECM variable-speed electronically commutated blower motor |
| -HP-X (e.g. 12SPXA3-HP-X) | Heat pump with ECM blower motor |
Amana VTC / VTH Suffix Key
| Suffix / Example | Meaning |
|---|---|
| VTC (e.g. VTC123E-3) | Cooling + electric resistance heat only - no heat pump |
| VTH (e.g. VTH123E-3) | Heat pump with electric backup heat |
| 09 / 12 / 18 / 24 | BTU class: 9,000 / 12,000 / 18,000 / 24,000 BTU/h |
| E | Design series E = R-410A refrigerant (2010 revision) |
| -0, -2, -3, -4... (trailing number) | Electric heater size in kW (0 = no heat strip) |
Not sure which model you need?
Our HVAC specialists can help you identify the correct Multi Mfg replacement for your property. We handle bulk orders for hotels, apartment complexes, and senior housing communities.
Contact Our HVAC Team