Ductless mini-splits
Mitsubishi MSZ-FS09NA / MUZ-FS09NA Single-Zone Ductless System
8 of this catalog's 10 products (80%) carry at least one real, seller-observed equipment price gathered 2026-08-24 (gotductless, hvacdirect, supplyhouse, hvacplace, acdirect) — well clear of the 70% gate. carrier-37mara-09 (sold through a closed dealer network with no public price) and bosch-climate5000-12k (public prices found only for the discontinued R-410A generation, not the current R-454B SKU this catalog lists — not substituted, to avoid misrepresenting a different product) are left honestly unpriced rather than estimated. Every one of the 10 products has a recorded SKU-verification status (verified x9, mismatch x1 — mitsubishi-mxz-3d24nl, where the commonly-quoted MXZ-3C24NA is confirmed discontinued and MXZ-3D24NL is the current equivalent). DATA-QUALITY FLAG found while reading these files: daikin-aurora-multi's catalog record lists capacity_btu=36000 and zones_max=5, but the seller research recorded for it shows the 36,000 BTU/h outdoor unit is actually the 4-zone SKU (4MXT36AVJU9), and the true zones_max=5 SKU (5MXT40AVJU9) is 40,000 BTU/h. The product's own zones_max and capacity_btu fields describe two different real SKUs, not one. Not corrected in this pass (out of scope — this file does not touch products.py) but flagged here and in "What to do next" as a specific, actionable fix.
Mitsubishi's mainstream M-Series single-zone system at the smallest capacity point in this catalog, distinct from the flagship FX Deluxe Hyper-Heating line already in this catalog.
Our take
This is the everyday Mitsubishi, not the cold-climate flagship — a smaller room, a more moderate climate, and a lower price than the FX Deluxe for buyers who don't need -13°F operation. The efficiency numbers are still strong for a mainstream single-zone unit.
Best for
A single small room or zone in a moderate climate where the flagship cold-climate line is more capability than the space needs.
Watch out for
Don't assume this matches the FX Deluxe's cold-weather capacity — check the specific minimum operating temperature against your climate.
How it performs by climate zone
Heating capability against each zone's 99% winter design temperature.
| Zone | Design temp | Verdict |
|---|---|---|
| 3C — Warm – Marine | 36°F | Strong fit Rated to -13°F, comfortably below this zone's 36°F design temperature, and holds 89% of capacity at 5°F. |
| 4A — Mixed – Humid | 14°F | Strong fit Rated to -13°F, comfortably below this zone's 14°F design temperature, and holds 89% of capacity at 5°F. |
| 4B — Mixed – Dry | 18°F | Strong fit Rated to -13°F, comfortably below this zone's 18°F design temperature, and holds 89% of capacity at 5°F. |
| 4C — Mixed – Marine | 27°F | Strong fit Rated to -13°F, comfortably below this zone's 27°F design temperature, and holds 89% of capacity at 5°F. |
| 5A — Cool – Humid | 2°F | Strong fit Rated to -13°F, comfortably below this zone's 2°F design temperature, and holds 89% of capacity at 5°F. |
| 5B — Cool – Dry | 3°F | Strong fit Rated to -13°F, comfortably below this zone's 3°F design temperature, and holds 89% of capacity at 5°F. |
| 6A — Cold – Humid | -8°F | Workable Rated to -13°F against a -8°F design temperature — enough margin, though backup heat will run on the coldest days. |
| 6B — Cold – Dry | -10°F | Marginal Rated to -13°F with a -10°F design temperature leaves almost no margin. Expect backup heat to carry a meaningful share of the load. |
| 7 — Very Cold | -20°F | Not suitable Rated only to -13°F, but this zone's design temperature is -20°F. |
| 8 — Subarctic | -40°F | Not suitable Rated only to -13°F, but this zone's design temperature is -40°F. |
What sellers are actually charging
Real listings, read on the date shown. Prices change — click through to check before you act on any of them.
| Seller | What you get | Price | Seen |
|---|---|---|---|
| HVACDirect.com
online retailer |
Mitsubishi M-Series FS single-zone system
MSZ-FS09NA / MUZ-FS09NA-2 |
$2,143 | 2026-08-16 |
Equipment price is not installed price. The listings above are what the hardware costs. Installation — labour, electrical, refrigerant lines, permits, removing the old system — is typically a similar amount again, and varies more between contractors than between brands. Where we have an installed figure it is labelled as such and comes from someone who actually installs.
Compare against
Mitsubishi FX Deluxe Single-Zone Hyper-Heating (MUZ-FX)
Single-zone ductless Hyper-Heating system with the highest HSPF2 of any product in our database.
Fujitsu Halcyon XLTH Extra Low Temperature Heating
Cold-climate ductless system rated to operate at -15°F, competing directly with Mitsubishi's Hyper-Heating line.
Gree Sapphire Ultra SAP12HP230V1AO Single-Zone Ductless System
Cold-climate single-zone ductless system rated to -22°F, priced below the Japanese-brand flagships in this catalog.
Daikin Aurora Multi-Zone Ductless System
Multi-zone cold-climate ductless system supporting up to five indoor heads from one outdoor unit.
Before you buy this
Ask the contractor for the AHRI certificate number for the specific indoor/outdoor combination being installed — ratings apply to matched pairs, not to the outdoor unit alone. Ask whether they will perform a Manual J load calculation rather than sizing off the equipment being replaced. And check your state and utility incentive programmes: there is no federal tax credit for a 2026 installation, so those programmes are now the only incentive money available, and many require approval before installation.