Daikin / Contractor equipment reference
Plan a multi-room R-32 system with outdoor-unit specifications, indoor-combination guidance and manufacturer literature in one contractor reference.
Plan the equipment around the job
An MXM proposal starts with each room’s load, the indoor-unit styles and the way those rooms will be used. Outdoor nominal size is one part of the selection—not a promise of full capacity at every indoor unit simultaneously.
Record the complete indoor model for each zone. Wall mounts, concealed units and other styles must be checked against the combination tables for the selected outdoor model; a shared brand or refrigerant does not approve a pairing.
Use the manufacturer’s allowed combinations and corrected performance data. Adding indoor nameplate capacities does not establish the capacity available to a particular room when several zones call together.
Total piping length, each room’s branch length and vertical separation are different limits. Document the proposed route and required controls before quoting the equipment and installation accessories.
The numbers contractors need
Compare the listed full models, or select one for a focused view.
3 model references · confirm current sourcing and availability with Mar-Hy.
| Reference | 2MXM18AVJU918,000 Btu/h class · 2 ports | 3MXM24AVJU924,000 Btu/h class · 3 ports | 4MXM36AVJU936,000 Btu/h class · 4 ports |
|---|---|---|---|
| Outdoor model | 2MXM18AVJU9 | 3MXM24AVJU9 | 4MXM36AVJU9 |
| Nominal size class (Btu/h) | 18,000 | 24,000 | 36,000 |
| Maximum indoor connections | 2 | 3 | 4 |
| Refrigerant | R-32 | R-32 | R-32 |
| Power supply | 208–230 V · 1 phase · 60 Hz | 208–230 V · 1 phase · 60 Hz | 208–230 V · 1 phase · 60 Hz |
| Compressor | Inverter-driven swing | Inverter-driven swing | Inverter-driven swing |
| Cabinet H × W × D (in.) | 29-1/2 × 34-1/4 × 12-5/8 | 29-1/2 × 34-1/4 × 12-5/8 | 29-1/2 × 34-1/4 × 12-5/8 |
| Net weight (lb) | 127 | 140 | 142 |
| Minimum circuit ampacity (A) | 15.6 | 19.9 | 24.1 |
| Maximum overcurrent protection (A) | 20 | 25 | 25 |
| Sound pressure — cooling / heating (dBA) | 52 / 54 | 52 / 54 | 56 / 60 |
| Liquid connection O.D. (in.) | 1/4 × 2 ports | 1/4 × 3 ports | 1/4 × 4 ports |
| Gas connection O.D. (in.) | 3/8 × 1; 1/2 × 1 | 3/8 × 1; 1/2 × 2 | 3/8 × 1; 1/2 × 2; 5/8 × 1 |
Source: Daikin EDUS122402 — printed pages 9–10 and 32 (PDF pages 11–12 and 34). Reviewed November 10, 2026.
The published MXM family reaches up to 21 SEER2 and 10 HSPF2 in qualifying combinations. The actual rated combination, indoor-unit arrangement and application determine which figures apply. Select the complete outdoor and indoor models in the AHRI finder, then verify the official record. Design-temperature capacity still requires the manufacturer’s performance data.
Read it. Save it. Bring it to the job.
Open the manufacturer reference you need. Documents load when selected.
Search MXM R-32 references in the Mar-Hy document library
The engineering manual is a technical reference, not a dedicated model submittal. Its stated scope covers the 2/3/4MXM-A models shown here; five-zone literature remains separate.
Get a useful quote on the first conversation
No. Port count is only the connection limit. Confirm the manufacturer’s indoor-model combinations and connected-capacity rules, then establish the capacity available for the actual operating conditions.
No. The engineering reference used for this chart covers the listed two-, three- and four-port models. Use the separate manufacturer instructions and specifications for 5MXM48 equipment.
Compare the complete indoor/outdoor combination, controls, drainage, mounting and piping accessories, delivery needs and installation scope. Ask Mar-Hy for current contractor pricing and availability; this page is not a live stock feed.
Find it at Mar-Hy
Use the model lookup below, or ask our team to confirm sourcing, current contractor pricing and availability. Mar-Hy serves contractors in Oregon and Southwest Washington from Milwaukie.
2MXM18AVJU9
Look up model in the shopConfirm current price and availability in the store.
3MXM24AVJU9
Look up model in the shopConfirm current price and availability in the store.
4MXM36AVJU9
Ask about model sourcingManufacturer family reference; confirm sourcing with Mar-Hy.
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