Cold Climate Heat Pump Capacity
Daikin Aurora (wall ductless): Heating Capacity at 5F and Below
The MAX heating capacity the Daikin Aurora (wall ductless) holds as it gets cold, from the AHRI-certified NEEP record (AHRI 212494263), with the maintained-% and a balance-point readout.
MAX Capacity by Temperature
| Outdoor temperature | Type | Heating capacity |
|---|---|---|
| 47F | RATED | 21,600 BTU/hr |
| 47F | MAX | 28,000 BTU/hr |
| 17F | MAX | 23,200 BTU/hr |
| 5F | MAX | 21,600 BTU/hr |
| -13F (cold floor) | MAX | 21,600 BTU/hr |
The “will it heat my house at 5F” answer is the MAX at 5F (21,600 BTU/hr), shown next to the rated 47F capacity so you see both. Capacity below -13F is not published for this line, so it is not extrapolated here.
Maintained Capacity at 5F
At 5F the Daikin Aurora (wall ductless) holds 21,600 BTU/hr. That is 100% of its rated 47F capacity (21,600 / 21,600), and 77.1% of its MAX 47F capacity (21,600 / 28,000). Both are true; the denominator is always stated. NEEP floors its stored percentage to a whole number (100% and 77% respectively); the computed ratio is shown above.
Balance Point & Backup Heat
The balance point is where this model's declining capacity curve crosses the load line, which runs from zero at 65F to your full design load at the design temperature. Enter your own design heat load in the calculator below for your numbers. This is a readout, not a substitute for a Manual-J load calculation.
Run It for Your Temperature and Load
Source
Capacity and COP transcribed from the AHRI-certified NEEP cold-climate air-source heat pump database, pinned to AHRI certificate 212494263 for outdoor unit RXL18WMVJU*: NEEP ccASHP record, accessed 2026-07-11. The manufacturer engineering data or a Manual-J by an HVAC pro has the final say.
A cold-climate wall head that holds its rated 21,600 all the way from 5F down to -13F. Its MAX at 5F equals its rated 47F capacity, so it delivers full rated output at 5F, which is the strongest cold-hold in the wall-ductless group here.
Frequently Asked Questions
What is the Daikin Aurora (wall ductless) heating capacity at 5F?
The Daikin Aurora (wall ductless) puts out 21,600 BTU/hr MAX at 5F, which is 100% of its 21,600 BTU/hr rated capacity at 47F (and 77.1% of its 28,000 MAX at 47F). This is the number that answers whether it can heat your house on a cold day. Pinned to AHRI certificate 212494263.
How low can the Daikin Aurora (wall ductless) operate?
The lowest rated row on the AHRI-certified NEEP record is -13F, where it still delivers 21,600 BTU/hr MAX. Below that temperature the capacity is held at the -13F row rather than extrapolated to an unpublished colder number.
What is the Daikin Aurora (wall ductless) COP at 5F?
The COP at MAX capacity at 5F is 1.8. That is the coefficient of performance at the maximum output the unit reaches at 5F. Only the MAX-capacity COP is published here; the minimum-output COP at extreme lows is artifactual and is not a useful cold-weather figure.
What is the balance point for the Daikin Aurora (wall ductless)?
It depends on your home's heat loss. Against a 45,000 BTU/hr design load at 5F, the Daikin Aurora (wall ductless) balances at 31.1F and needs 23,400 BTU/hr (6.86 kW) of backup heat at the 5F design temperature. Enter your own load in the calculator for your balance point. A Manual-J load calculation has the final say.
Other Cold-Climate Heat Pumps
Mitsubishi P-Series Hyper-Heat (ducted)
38,000 BTU/hr at 5F (95% of rated).
Bosch IDS (ducted)
21,800 BTU/hr at 5F (63.7% of rated).
Fujitsu AIRSTAGE XLTH (wall ductless)
23,200 BTU/hr at 5F (96.7% of rated).
Carrier Performance (ducted)
26,200 BTU/hr at 5F (82.4% of rated).
LG Ceiling / ducted (R-32)
36,000 BTU/hr at 5F (90% of rated).
Gree FLEXX (ducted, R-32)
25,000 BTU/hr at 5F (100% of rated).
MRCOOL Universal (ducted DIY)
22,000 BTU/hr at 5F (91.7% of rated).
Capacity at 5F Chart (All Models)
Every line on one table: rated 47F, MAX at 17F and 5F, the cold floor, and COP.
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