Daikin 3MXM24AVJU9 — 2 Ton R-32 Three-Port Multi Zone Heat Pump Condenser
The Daikin 3MXM24AVJU9 is a 2 ton, three-port R-32 multi zone heat pump condenser rated 21 SEER2, 12 EER2, and 10 HSPF2 — higher on all three measures than Daikin's four-port and five-port MXM condensers. It delivers 23,000 BTU/h rated cooling and 24,000 BTU/h rated heating, serves two or three indoor zones, and allows up to 39,000 BTU of total connected indoor capacity. At 52 dBA in cooling it is also the quietest unit in the R-32 MXM multi range, which matters when the condenser sits under a bedroom window or against a neighbor's property line. This listing covers the outdoor unit only — wall-mount heads, Daikin Vista ceiling cassettes, copper and wire kits, and the cassette wall controller are selected below.
Is a 2 Ton Three-Zone Condenser the Right Size?
Three-port systems are the sweet spot for most ductless retrofits. They suit homes and suites where two or three areas need their own setpoint and the combined design load sits near 23,000 BTU — typically 900 to 1,400 square feet across a primary bedroom, a living area, and a third space like a guest room, office, or finished attic. Because this condenser carries the highest efficiency ratings in the R-32 MXM lineup, choosing it over a larger multi you do not need improves both operating cost and rebate eligibility rather than just saving on equipment.
Connected indoor capacity can reach 39,000 BTU across the three ports, which is well above the 23,000 BTU rated output. That headroom exists so each room can be sized for its own peak while the condenser handles the smaller simultaneous load — it is not extra output. The largest single indoor unit this condenser accepts is 18,000 BTU, and not every capacity mix is approved, so verify your intended layout against the Daikin MXM combination table. Installed limits are 230 feet of total system piping and a 49.25 foot maximum height difference between the outdoor unit and any indoor unit.
Ideal for: Two and three bedroom homes without ductwork, condos and townhomes, ADUs and garage apartments, finished attics and basements, dental and salon suites, and any install where a quiet outdoor unit and a shallow cabinet matter more than raw capacity.
Need a fourth zone? Step up to the Daikin 4MXM36AVJU9 four-zone condenser, which adds a port and 34,200 BTU rated cooling at 20 SEER2. Comparing across the range? Browse every multi zone mini split heat pump we stock, and check current incentives in our HVAC rebate center.
Recommended zone counts and square footage ranges are general guidelines only. Actual requirements depend on insulation, glazing, ceiling height, infiltration, outdoor design temperature, simultaneous zone demand, and installed piping length. Size the job with our mini split BTU sizing calculator, request a free three-zone layout quote, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Condenser | 3MXM24AVJU9 — 2 Ton R-32 Inverter Multi Zone Heat Pump Condenser |
|---|---|
| Indoor Units | Not included — select wall-mount or Vista ceiling cassette units above |
| Application | Ductless Multi Zone Heat Pump System, Up To 3 Zones |
| Efficiency | 21 SEER2 / 12 EER2 / 10 HSPF2 (Non-Ducted) |
| Rated Capacity | 23,000 BTU/h Cooling — 24,000 BTU/h Heating |
| Max Connected Capacity | 39,000 BTU Across All Three Zones |
| Refrigerant | R-32, 4.9 lb factory charge, 0.22 oz per additional foot |
| Electrical | 208-230V, Single Phase, 60 Hz — 19.9 MCA, 25 A Max Fuse |
| Sound Level | 52 dBA Cooling — 54 dBA Heating |
What ships is the 3MXM24AVJU9 outdoor unit, charged with R-32 and ready for two or three indoor units. Each zone needs its own line set, so a pre-flared copper and wire kit is offered per zone in 15, 25, and 50 foot lengths. Any zone using a Vista cassette also needs the BRC1NRV71 wired wall controller, offered above. The condenser's 5/8 inch drain connection pairs with a 5/8 inch to 3/4 inch PVC drain adapter where you are tying into rigid pipe. For mounting, most installs use either an 18x40 hurricane-rated condenser pad or an adjustable outdoor wall bracket, plus a weatherproof whip with pull-out disconnect. Where an indoor unit has no gravity drain path, add a 230 volt condensate removal pump.
Condenser Features & Zoning Options
3MXM24AVJU9 Outdoor Condenser
- 21 SEER2, 12 EER2, and 10 HSPF2 — the highest ratings in the R-32 MXM multi range
- Inverter-driven swing compressor with PAM control for continuous modulation
- 23,000 BTU/h rated cooling and 24,000 BTU/h rated heating output
- Three refrigerant ports serve two or three indoor units
- 52 dBA cooling and 54 dBA heating sound levels with Night Quiet Mode
- Shallow 12-5/8 inch deep cabinet at just 140 lb, 29-1/2" H x 34-1/4" W
- Single 208-230V circuit at only 19.9 MCA with a 25 A maximum fuse
- Cooling operation 14°F to 115°F; heating operation 5°F to 60°F
- R-32 with 4.9 lb factory charge, pre-charged for 131.25 ft of piping
- Anti-corrosion treated heat exchanger, cold-climate drain pan, self-diagnosis LED indication
Indoor Unit Options & Accessories
- Up to 39,000 BTU of combined indoor capacity across the three ports
- Wall-mount heads with built-in WiFi from 7,000 through 18,000 BTU
- Daikin Vista ceiling cassettes from 9,000 through 18,000 BTU
- Wall units and cassettes mix freely on the same condenser, zone by zone
- BRC1NRV71 wired wall controller serves cassette zones, up to 16 cassettes
- Approved capacity combinations are published in the Daikin MXM matchup table
- Independent setpoint and fan speed in every zone, plus Priority Room Setting
- Cool/Heat mode lock and Quick Warming Function for coordinated operation
- KEH063A4E drain pan heater and factory snow hoods available for cold climates
- 12 year limited parts warranty with online registration for residential installations
Specifications & Manuals
Product documentation includes rated performance data, refrigerant piping and installation requirements, the approved indoor unit combination table, and Daikin warranty terms to assist with head selection, permitting, installation, and service.
Frequently Asked Questions
Why does this three-zone condenser have a higher SEER2 than the four and five zone models?
A smaller compressor and coil serving fewer ports operates closer to its efficient range across more of the season. The 3MXM24AVJU9 is rated 21 SEER2, 12 EER2, and 10 HSPF2, against 20 SEER2, 10 EER2, and 9.5 HSPF2 on the four-port and five-port MXM condensers. If three zones cover your home, you are not compromising by choosing the smaller unit.
Can I run only two zones on a three-port condenser?
Yes. Two or three indoor units are both valid configurations, and the unused port is simply capped. Some installers deliberately buy the three-port unit for a two-zone job so a third head can be added later without replacing the outdoor unit.
What is the largest indoor unit this condenser accepts?
18,000 BTU, in either wall-mount or Vista cassette form. There is no 24,000 BTU option on this condenser. If one room needs more than 18,000 BTU, the four-port or five-port MXM condenser is the correct starting point.
How do I confirm my three-head combination is approved?
Check the combination table linked above. Daikin lists the permitted capacity mixes for two-port and three-port condensers explicitly, and a combination absent from that list is not approved even if the totals fall under 39,000 BTU. If your layout is not listed, call 813-885-7999 and we will work out a compliant alternative.
Should I choose wall-mount heads or ceiling cassettes?
Wall-mount heads cost less, install faster, and include built-in WiFi with a wireless remote. Vista cassettes recess into a finished ceiling for a cleaner look and four-way airflow, but they need adequate plenum depth above the ceiling and require the BRC1NRV71 wired wall controller. Mixing both on one system is common — cassettes in living and reception areas, wall units in bedrooms.
How loud is the outdoor unit?
52 dBA in cooling and 54 dBA in heating, the lowest in the R-32 MXM multi range. Night Quiet Mode reduces output further during overnight hours. For reference, that is comparable to a normal conversation at a few feet, which is why this unit works well in tight side yards and near bedroom windows.
What size circuit does the 3MXM24AVJU9 need?
Minimum circuit ampacity is 19.9 amps with a 25 amp maximum fuse or breaker, on a single 208-230V, 60 Hz, single-phase circuit. Indoor units are powered from the outdoor unit through the interconnecting wire in each zone's copper and wire kit, so no separate indoor circuits are required.
Is there a cold-climate option for snow and icing?
Yes. Daikin offers factory snow hoods for this cabinet size, covering the intake side, intake rear, and outlet, along with the KEH063A4E drain pan heater available in the options above. These are worth specifying where snow drifts against the unit or heating runs for long periods at or below 5°F.
Where can I check for utility rebates on this system?
High-efficiency ductless heat pumps frequently qualify for utility or state incentives, and the 21 SEER2 and 10 HSPF2 ratings on this unit clear many program thresholds that lower-rated equipment does not. Programs vary by state and utility, so start with our rebate center and confirm current terms with your provider before purchasing.
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Technical Specifications
Installation Manual
Combination Table (Allowable Matchups)
