3 Ton Gree Flexx Ultra 18 SEER2 R32 Inverter Heat Pump System FXU36HP230V1R32AO, FXE36HP230V1R32AH
This matched Gree split system pairs the FXU36HP230V1R32AO Flexx Ultra inverter condenser with the FXE36HP230V1R32AH Flexx Eco multi-position air handler for 36,000 BTU of variable-capacity heating and cooling on R32 refrigerant. Rated 18 SEER2 under AHRI 217123257, the G20 two-stage inverter compressor modulates continuously rather than cycling on and off, holding room temperature closer to setpoint and pulling more moisture out of the air during long, humid Florida shoulder seasons. Gree now builds this FXU condenser and FXE air handler combination in two sizes only, 3 ton and 5 ton, so contractors sizing a 2 ton load specify this 3 ton system and let the inverter ramp down into the load instead of chasing a discontinued nominal size.
Is a 3 Ton Gree Flexx System the Right Size?
Nominal tonnage on an inverter system describes the top of the operating band, not a fixed output. Per Gree Flexx Ultra R32 submittal data, the FXU36HP230V1R32AO modulates from 21,542 to 39,600 BTU/h in cooling and 19,592 to 36,040 BTU/h in heating. That band covers a calculated 2 ton load at the low end and a full 3 ton load at the top, which is why Gree consolidated the FXU/FXE lineup into 3 ton and 5 ton and dropped the separate 2 ton and 4 ton system pairings. A 24,000 BTU load does not need a 24,000 BTU box, it needs a compressor that will sit at 24,000 BTU and stay there.
Load is what governs the selection, not square footage alone. Ceiling height, window area and orientation, attic and wall insulation, duct location and leakage, infiltration, occupancy, and internal gain from kitchens and equipment all move the number. An inverter system is more forgiving of a load that lands between sizes than a fixed-capacity unit, but a Manual J is still the right starting point, and duct static pressure matters here because the FXE36 air handler is rated to 1.0 in. w.c. maximum external static pressure.
Ideal for: Homes and light commercial spaces with a calculated cooling load between roughly 22,000 and 36,000 BTU/h, including most three bedroom single family retrofits, townhomes, and two zone offices. This is also the correct selection when a 2 ton replacement is called for, because the inverter ramps down into that load.
Need more capacity? Step up to the 5 Ton Gree Flexx 18.5 SEER2 R32 Inverter Heat Pump System FXU60HP230V1R32AO, FXE60HP230V1R32AH, which is also the unit to specify for a 4 ton load since Gree no longer offers a 4 ton FXU/FXE pairing.
Recommended applications are general guidelines only. Actual system requirements depend on insulation, duct design, ambient conditions, infiltration, internal gain, and a calculated heating and cooling load. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Condenser | FXU36HP230V1R32AO — 36,000 BTU Flexx Ultra Inverter Heat Pump Condenser |
|---|---|
| Indoor Air Handler | FXE36HP230V1R32AH Flexx Eco Multi-Position Ducted Air Handler |
| Controller | WK-010WC1 Programmable Wired Controller Included |
| Application | Residential and Light Commercial Ducted Split Heat Pump |
| Refrigerant | R32, factory charge 102.3 oz, 0.323 oz/ft additional |
| Compressor | Gree G20 Double Cylinder Two-Stage Inverter |
| Rated Efficiency | 18 SEER2, AHRI 217123257 |
| Electrical | Condenser 208-230V, Single Phase, 60 Hz — MCA 27.7A, MOCP 30A |
| Air Handler Electrical | 208-230V, Single Phase, 60 Hz — MCA 5.3A, MOCP 15A, 24 VAC control |
The FXU36 condenser ships as a zero lot line side-discharge cabinet with a gold fin outdoor coil rated to 1,500 hours salt spray, which matters on coastal installs around Tampa Bay and the Gulf. The FXE36 air handler is a blue fin, 500 hour salt spray coil in a multi-position cabinet that can be set upflow, downflow, or horizontal, and it moves 1,000 CFM through a five speed centrifugal blower. Line set is 3/8 in. liquid by 3/4 in. gas flared, precharged for 31 ft and rated for runs from 10 to 164 ft with up to 49 ft of elevation difference. Control is standard 24 VAC, so the system runs on a conventional thermostat rather than a proprietary communicating stat.
Condenser & Air Handler Features
FXU36HP230V1R32AO Outdoor Condenser
- Gree G20 double cylinder two-stage inverter compressor
- Modulates 21,542 to 39,600 BTU/h cooling, 19,592 to 36,040 BTU/h heating
- Rated 34,000 BTU/h cooling at 95°F
- Heating operation down to -22°F ambient
- Cooling operation from 5°F to 129°F ambient
- Zero lot line side-discharge cabinet
- Copper tube, aluminum fin coil with gold anti-corrosion coating, 1,500 hour salt spray
- R32 refrigerant with lower GWP than R410A
- MCA 27.7A, MOCP 30A at 208-230V single phase
- 61 dB(A) sound pressure level
FXE36HP230V1R32AH Flexx Eco Air Handler
- Multi-position cabinet for upflow, downflow, or horizontal installation
- 1,000 CFM rated airflow
- Five speed centrifugal blower
- Rated to 1.0 in. w.c. maximum external static pressure
- 6.02 pt/hr dehumidification capacity
- Copper tube, aluminum fin coil with blue anti-corrosion coating, 500 hour salt spray
- Factory filter included
- Accepts field-installed electric heat kits in 5, 6, 9, 10, 12, and 15 kW
- MCA 5.3A, MOCP 15A with 24 VAC control
- 51 dB(A) sound pressure level, 163.1 lb net weight
Specifications & Manuals
Product documentation includes 36,000 BTU submittal data, FXE air handler owner information, quick start instructions, FXU condenser installation information, Flexx series literature, and warranty information to assist with equipment selection, installation, and service.
Frequently Asked Questions
Why does Gree only offer this FXU/FXE system in 3 ton and 5 ton?
Gree consolidated the FXU condenser and FXE air handler pairing into two sizes because the inverter compressor covers the sizes in between. The 36,000 BTU outdoor unit runs anywhere from 21,542 to 39,600 BTU/h in cooling, so it serves a 2 ton load and a 3 ton load from the same cabinet. Buying a smaller nominal box would not change what the system actually delivers on a 2 ton day.
I calculated a 2 ton load. Should I still buy this 3 ton system?
Yes. A 24,000 BTU/h load sits inside this unit's modulation band, and the compressor will settle near that output and run long, steady cycles rather than short cycling. That is generally better for humidity control and comfort than a fixed-capacity 2 ton unit would be. Verify the load with a Manual J and confirm the duct system can handle 1,000 CFM within 1.0 in. w.c.
What is the difference between the FXU air handler and the FXE air handler?
This system uses the FXE36HP230V1R32AH from the Flexx Eco line, matched to a Flexx Ultra FXU outdoor unit. Budget Heating also stocks the all Flexx Ultra pairing with the FXU36HP230V1R32AH air handler. Both are multi-position ducted cabinets on 24 VAC control. Confirm the AHRI match for the combination you intend to install.
How cold can the FXU36HP230V1R32AO keep heating?
Gree rates heating operation down to -22°F ambient, with 28,200 BTU/h at 17°F and a COP of 2.0 at 5°F per submittal data. Cooling operation is rated from 5°F up to 129°F. Auxiliary electric heat is still specified in most applications for defrost recovery and design day backup.
How long a line set can I run on the 3 ton Flexx?
The FXU36HP230V1R32AO uses a 3/8 in. liquid by 3/4 in. gas flared connection, ships precharged for 31 ft, and is rated for total line lengths from 10 to 164 ft with a maximum elevation difference of 49 ft. Add 0.323 oz of R32 per foot beyond the precharge length.
Does this system need a communicating thermostat?
No. Both the condenser and the air handler use standard 24 VAC control, and a WK-010WC1 programmable wired controller is included with the system. A conventional heat pump thermostat will operate it, which keeps replacement and service straightforward.
Gree Flexx Submittal SheetGree Flexx FXE Owners ManualGree Quick Start GuideGree Flexx FXU Condenser Installation ManualGree Flexx BrochureGree Limited Warranty 
