3 Ton EcoTemp 15.5 SEER2 R454B Heat Pump Wall Mount Apartment/Condo Type System W5H5S36AKAAA, FMA5X3600AL
This is the top of the EcoTemp multifamily heat pump range: the largest capacity combined with the highest efficiency. The W5H5S36AKAAA R-454B heat pump and FMA5X3600AL wall-hung fan coil deliver 36,000 BTU of nominal heating and cooling at an AHRI-certified 15.5 SEER2 (AHRI #214424314). A 1/2 HP ECM blower moves air for the biggest units in the building while using less electricity than the PSC version. It suits luxury condos, penthouse units and owner-occupied homes where comfort, efficiency and resale appeal all matter.
Is a 3 Ton Heat Pump System the Right Size?
Choose 3 tons when your load calculation comes in near 36,000 BTU per hour. That is common in three-bedroom condos, large corner units and top-floor homes with extensive glass. It is the maximum capacity this wall-hung fan coil line offers, so it is meant for the most demanding units in a building.
Insulation upgrades, newer windows and shading can lower a unit's load enough to make 2.5 tons the better choice, and a correctly sized system is what delivers the rated 15.5 SEER2 performance. Verify the load with the tonnage and BTU calculator or ask our team for a sizing review.
Ideal for: Three-bedroom and luxury condos, penthouse and corner units, owner-occupied homes focused on efficiency, and premium replacements of 3 ton fan coil systems.
Need more capacity? The wall-hung FMA5 series tops out at 3 tons. For bigger loads, the 3.5 Ton EcoTemp 14.5 SEER2 R454B Heat Pump System W5H5S42AKAAA, WCHL425AC moves to a multi-position air handler.
Recommended system sizes are general guidelines only. Actual requirements depend on climate, insulation, unit location within the building, window exposure, occupancy, and installation conditions. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Heat Pump | W5H5S36AKAAA — 3 Ton Single-Stage R-454B Heat Pump |
|---|---|
| Indoor Fan Coil | FMA5X3600AL Wall-Hung Multifamily Fan Coil (ECM Motor) |
| Application | Apartment / Condo Split System Heat Pump, Heating & Cooling |
| Refrigerant | R-454B (Low-GWP A2L) |
| Compressor | Single-Stage Scroll Compressor |
| Efficiency | 15.5 SEER2, AHRI Certified #214424314 |
| Electrical | 208/230V, Single Phase, 60 Hz Heat Pump (19.2 MCA / 30 Amp Max Fuse or Breaker) |
| Fan Coil Electrical | 208/230V, Single Phase, 60 Hz |
The FMA5X3600AL ships on Tap 4 of its 5-speed, 1/2 HP ECM motor and delivers 1,120 CFM nominal. Its 22" wide cabinet takes a 20" x 20" x 1" filter and weighs 99 lbs. The W5H5S36AKAAA outdoor unit has a two-row coil, a 1/4 HP fan moving 3,500 CFM, and a 7.6 lb factory charge for a 15 ft. line set. If the indoor section is the only part being replaced, the FMA5X3600AL ECM wall-mount fan coil is available on its own. For cooling-only buildings, see the 3 ton W5A5S36AKDWA, FMA5X3600AL air conditioning system. Optional 5, 7.5 and 10 kW breakered heat kits are available on this page.
Heat Pump & Fan Coil Features
W5H5S36AKAAA Outdoor Heat Pump
- Part of the highest-efficiency 3 ton match in the line at 15.5 SEER2
- Two-row outdoor coil with 8 circuits for 3 ton capacity
- 1/4 HP fan delivering 3,500 CFM with vertical discharge
- Single-stage scroll compressor on low-GWP R-454B
- Loss of charge switch prevents running on low refrigerant
- Internal pressure relief valve and internal thermal overload
- Suction line accumulator and field-installed filter drier
- Front-seating service valves with 3/4" vapor and 3/8" liquid connections
- Optional crankcase heater, hard start and snow stand accessories
- Low ambient cooling to 0°F with approved kits
FMA5X3600AL Wall-Hung Fan Coil
- 1/2 HP 5-speed constant-torque ECM motor
- Tap 4 factory setting, 1,120 CFM nominal
- Cabinet air leakage below 1.4% per ASHRAE Standard 193
- Standard TXV with an all-aluminum coil
- Integrated refrigerant leak detection for R-454B
- 39-1/2" x 22" x 19" upflow wall-hung cabinet
- Zero clearance on all sides, with or without heaters
- Accepts 5, 7.5 or 10 kW circuit-breaker-protected heat
- Front return, field-convertible to bottom return
- Primary and secondary 3/4" FPT drains with a bottom access panel
Specifications & Manuals
Documentation for this 3 ton ECM package includes full heat pump and fan coil specifications, blower performance data, installation and wiring instructions, a service manual, warranty details, and product literature.
Frequently Asked Questions
What size apartment or condo calls for a 3 ton multifamily heat pump?
Units with a load near 36,000 BTU, typically three-bedroom condos, penthouses and large corner units with a lot of glass. Because this is the top size of the wall-hung line, confirm the load first rather than upsizing by default.
How does the FMA5X3600AL version compare with the FMA5L3600AL PSC version?
Both use the W5H5S36AKAAA outdoor unit and the same 22" cabinet. The FMA5X3600AL's 1/2 HP ECM motor raises the rating to 15.5 SEER2, compared with 14.5 SEER2 for the FMA5L3600AL PSC system. It also offers 5 blower speeds instead of 3.
Is the W5H5S36AKAAA protected against refrigerant and pressure problems?
Yes. It includes a loss of charge switch, an internal pressure relief valve, an internal thermal overload, a suction line accumulator and a filter drier. A high pressure switch is available as an accessory, as listed in the spec sheet.
What cabinet clearance does the FMA5X3600AL need?
The manufacturer lists zero required clearance on all sides and from the supply duct, with or without electric heaters. That lets it fit tight closets, but leave room at the front for filter changes and service access.
Is the FMA5X3600AL rated for low cabinet air leakage?
Yes. FMA5 fan coils are tested to ASHRAE Standard 193 with a cabinet air leakage rate below 1.4%. Lower leakage means more of the conditioned air reaches the living space instead of escaping into the closet.
Which building owners choose the 3 ton FMA5X heat pump package?
Luxury condo owners, HOAs upgrading their premium units, and investors who want top efficiency in the largest apartments. It is also a good fit for contractors who need an AHRI-matched, high-SEER2 replacement that installs in an existing fan coil closet.
W5H5S Technical SpecificationsW5H5S Installation InstructionsW5H5S Customer BrochureFMA5X Technical SpecificationsFMA5X Installation InstructionsFMA5X Warranty CertificateFMA5X Wiring DiagramFMA5X Service Manual
