Daikin 4MXM36AVJU9 — 3 Ton R-32 Four-Port Multi Zone Heat Pump Condenser
The Daikin 4MXM36AVJU9 is a 3 ton, four-port R-32 multi zone heat pump condenser rated 20 SEER2, 10 EER2, and 9.5 HSPF2, producing 34,200 BTU/h rated cooling and 34,600 BTU/h rated heating. Its four ports serve anywhere from two to four indoor zones, and the combination table allows up to 48,000 BTU of total connected indoor capacity. The cabinet is the real story here: at 12-5/8 inches deep and 142 pounds, it fits side yards, balconies, and narrow setbacks that cannot accommodate a larger multi condenser. This listing covers the outdoor unit only — wall-mount heads, Daikin Vista ceiling cassettes, per-zone copper and wire kits, and controls are selected below, so a single system can pair exposed wall units in bedrooms with recessed cassettes in finished living areas.
Is a 3 Ton Four-Zone Condenser the Right Size?
Four-port multi systems get chosen for one of two reasons: a home genuinely has four areas that need separate setpoints, or a smaller home needs two or three zones with room to add a fourth later. The 4MXM36AVJU9 handles both. Its rated output suits combined design loads in the 34,000 BTU range — commonly 1,400 to 2,000 square feet spread across bedrooms, a living area, and a converted garage or home office. Oversizing a multi system is a more expensive mistake than undersizing one, because a condenser that rarely modulates down loses the efficiency you paid for.
The 48,000 BTU connected-capacity allowance is deliberately larger than the 34,200 BTU rated output. That gap exists so individual rooms can be sized generously for their own peak load while the condenser handles the smaller simultaneous load. It does not mean the unit produces 48,000 BTU. Not every capacity combination is approved, either — Daikin publishes the exact permitted matchups, so check the MXM combination table before committing to a head layout. Physical limits also matter: 230 feet of total system piping, a 49.25 foot maximum height difference from the outdoor unit to any indoor unit, and 24.6 feet between indoor units.
Ideal for: Three and four bedroom homes without ductwork, ranch and split-level retrofits, finished basements paired with upstairs bedrooms, garage conversions, detached studios, and small office or treatment suites where a recessed ceiling cassette suits the finished space better than a wall unit.
Need a fifth zone or more capacity? The 5 zone Daikin R-32 condenser adds a fifth port and steps up to 46,000 BTU rated cooling. Fewer rooms to condition? Compare the full multi zone mini split heat pump range, or see how efficiency ratings are measured in our guide to SEER2 ratings.
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 zone layout quote, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Condenser | 4MXM36AVJU9 — 3 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 4 Zones |
| Refrigerant | R-32, 4.9 lb factory charge, 0.22 oz per additional foot |
| Compressor | Inverter-Driven Swing Compressor with PAM Control |
| Rated Capacity | 34,200 BTU/h Cooling — 34,600 BTU/h Heating |
| Max Connected Capacity | 48,000 BTU Across All Four Zones |
| Electrical | 208-230V, Single Phase, 60 Hz — 24.1 MCA, 25 A Max Fuse |
| Cabinet | 29-1/2" H x 34-1/4" W x 12-5/8" D, 142 lb Net Weight |
What ships is the 4MXM36AVJU9 outdoor unit, charged with R-32 and ready for two to four indoor units. Every zone needs its own insulated line set and interconnecting wire, so a pre-flared copper and wire kit is offered per zone in 15, 25, and 50 foot lengths matched to the capacity of the head you choose. Any zone using a ceiling cassette also needs the BRC1NRV71 wired wall controller. Line hide, wall sleeves, condenser pads, and other install hardware are stocked under mini split copper and accessories, and cold-climate installs can add the KEH063A4E drain pan heater from the options above. Where a cassette or wall unit has no gravity drain path, add a 230 volt condensate removal pump.
Condenser Features & Zoning Options
4MXM36AVJU9 Outdoor Condenser
- Inverter-driven swing compressor with PAM control for continuous capacity modulation
- 20 SEER2, 10 EER2, and 9.5 HSPF2 non-ducted efficiency ratings
- 34,200 BTU/h rated cooling and 34,600 BTU/h rated heating output
- Four refrigerant ports accept two, three, or four indoor units
- Compact 12-5/8 inch deep cabinet at 142 lb — fits narrow side yards and balconies
- Single 208-230V circuit at 24.1 MCA with 25 A maximum fuse or breaker
- 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
- 230 ft maximum total system piping and 49.25 ft outdoor-to-indoor height difference
- Anti-corrosion treated heat exchanger, cold-climate drain pan, self-diagnosis LED indication
Indoor Unit Options & Matchups
- Up to 48,000 BTU of combined indoor capacity across the four ports
- Wall-mount heads with built-in WiFi from 7,000 through 24,000 BTU depending on zone
- Daikin Vista ceiling cassettes from 9,000 through 18,000 BTU for finished ceilings
- Wall units and cassettes can be mixed freely on the same condenser
- BRC1NRV71 wired wall controller serves cassette zones, managing up to 16 cassettes
- Approved capacity combinations are published in the Daikin MXM matchup table
- Every zone holds an independent setpoint and fan speed
- Priority Room Setting assigns first call on capacity to one designated zone
- Cool/Heat mode lock and Quick Warming Function for coordinated seasonal operation
- 12 year residential limited parts and compressor warranty with online registration; 5 year limited parts for commercial applications
Specifications & Manuals
Product documentation includes rated performance data, installation and refrigerant piping requirements, the approved indoor unit combination table, and Daikin warranty terms to assist with head selection, permitting, installation, and service.
Frequently Asked Questions
Why is the 4MXM36AVJU9 listed at 36,000 BTU when Daikin rates it at 34,200?
36,000 BTU is the nominal 3 ton size used for catalog and search purposes. Daikin's rated output at standard test conditions is 34,200 BTU/h cooling and 34,600 BTU/h heating. Use the rated figures when you size against a calculated load.
If it only produces 34,200 BTU, why does the page allow 48,000 BTU of heads?
Multi zone systems are sized for simultaneous load, not the sum of every room's peak. The 48,000 BTU allowance lets you size each room generously for its own worst case, since all four rooms rarely hit peak demand at the same moment. The condenser output does not increase.
Can I put four 12,000 BTU heads on this condenser?
Daikin publishes a specific list of approved four-zone combinations, and four 12,000 BTU heads is among them. Other combinations are not permitted even when the math appears to work, so confirm your intended layout against the combination table above before ordering.
Which zones accept the 24,000 BTU wall-mount head?
Zones two, three, and four. Zone one tops out at 18,000 BTU. If your largest room needs a 24,000 BTU unit, assign it to zone two, three, or four and place a smaller head on zone one. Cassettes top out at 18,000 BTU in any zone.
Do the ceiling cassettes need a separate controller?
Yes. Cassette indoor units require the BRC1NRV71 wired wall controller, which handles up to 16 cassettes on one system. Wall-mount heads do not need it — they include built-in WiFi and a wireless remote. On a mixed system the controller covers the cassette zones only.
Which copper and wire kit does each zone need?
Kit size follows head capacity, not zone number. The 1/4 x 3/8 kit covers 7,000 through 12,000 BTU units, the 1/4 x 1/2 kit covers 15,000 and 18,000 BTU units, and the 1/4 x 5/8 kit is for a 24,000 BTU wall unit. Each is offered in 15, 25, and 50 foot lengths, and every zone needs its own.
How much space does the outdoor unit take up?
The cabinet measures 29-1/2 inches high, 34-1/4 inches wide, and only 12-5/8 inches deep, weighing 142 lb. The shallow depth is a practical advantage on lots with narrow setbacks. Follow the service and airflow clearances in the installation manual rather than fitting it to the cabinet dimensions alone.
Will a 30 amp breaker work for this condenser?
No. Minimum circuit ampacity is 24.1 amps and maximum fuse or breaker size is 25 amps. Exceeding the maximum overcurrent protection is a code and warranty problem, so the circuit needs to be sized to Daikin's stated maximum, not simply larger.
When is the drain pan heater worth adding?
The KEH063A4E is intended for 2 to 4 zone Daikin multi systems installed where heating runs for extended periods at or below 5°F, or where high humidity causes base pan icing. It keeps meltwater draining during defrost. In warm and mixed climates it is generally unnecessary.
Technical Specifications
Installation Manual
Combination Table (Allowable Matchups)
