Model page, ductless multi-zone
Mitsubishi MXZ
Mitsubishi’s hyper-heating multi-zone line — one outdoor unit running separate indoor units, with 100% of rated heating capacity held at 5F and a printed 75% at its -13F floor, the best-documented floor figure in our guide, because Mitsubishi prints it instead of leaving us to divide a table. It also carries the finding most quotes leave out: multi-zone units do not earn Maine’s per-unit rebate, and this page explains that $0.
The unit and the cold numbers
100%
Of rated heating capacity at 5F, printed on the submittal — 25,000 BTU/h held against 25,000 rated
75%
Of rated heating capacity at -13F, printed on the submittal; its own table reads slightly higher
2-3
Indoor units one MXZ-D-NLHZ outdoor unit runs — the larger 4-to-8-zone hyper-heat duty lives in the separate Smart Multi line
First, a naming correction: “MXZ-D-NLHZ” is the series name, and the zone count goes before the D — the three current R-454B units are the MXZ-2D20NLHZ (2 zones, 20,000 BTU/h), MXZ-3D24NLHZ (3 zones, 24,000 BTU/h) and MXZ-3D30NLHZ (3 zones, 30,000 BTU/h). The 4-to-8-zone hyper-heating systems quotes sometimes mention are a different series, the MXZ-SM Smart Multi. Mitsubishi’s submittal for the MXZ-3D24NLHZ rates the outdoor unit three ways — ductless, mixed and fully ducted — so the same condenser’s efficiency and cold figures change with the indoor units on the quote, and so do the rebates. Base pan heaters are built in to keep ice from forming at the floor of the range.
100%
5F
A mild fall day — of rated heating capacity, per the submittal bullet for the MXZ-3D24NLHZ: 25,000 BTU/h held at 5F against 25,000 BTU/h rated at 47F. As with every Mitsubishi H2i claim, the percentage is against the rated figure, not the 30,600 BTU/h maximum the unit reaches in mild air — against that, 5F is 82%.
75%
-13F
The cold snap you fear, and the line’s operating floor — of rated heating capacity at -13F, Mitsubishi’s printed bullet — and the more honest number, because its own submittal table reads higher: 20,400 BTU/h at -13F, which works out to 82% of the 25,000 BTU/h rated at 47F. We print the company’s figure, not the flattering arithmetic. Heating is guaranteed to -13F, with an automatic cut-out at -22.5F.
Efficiency, for the outdoor unit in the ductless column: 20.0 SEER2, 13.0 EER2 and 10.0 HSPF2, with a COP of 3.50 at 47F, 2.02 at 17F and 2.02 at 5F at maximum capacity. In the fully ducted column it is 14.4 SEER2, 10.0 EER2, 8.0 HSPF2 and a COP of 1.66 at 5F. Those two columns lead to different answers in Minnesota, and the rebate rows below follow them.
Source: Mitsubishi Electric, MXZ-3D24NLHZ submittal sheet (PDF, official document hosted by a distributor). Checked on October 10, 2026.
Two honesty notes. First, “100% at 5F” is Mitsubishi’s grammar, and by now a familiar one: the percentage is held against the 47F rated capacity, not the 47F maximum — the same distinction we flagged on the Bosch and SUZ pages. Second, every number on this page belongs to a configuration. The 75% figure at -13F is printed for the outdoor unit, but Mitsubishi’s own table shows the ducted column trailing the ductless one at every temperature, and the rebates a quote can earn follow the indoor units, not the condenser alone.
Source: Mitsubishi Electric, MXZ-D-NLHZ series page — H2i claims and R-454B model list. Checked on October 10, 2026.
What the states pay for it
A rebate never attaches to a model name alone — it attaches to a unit on a program’s list, installed to the program’s rules. For this series the configuration decides Minnesota and Vermont, and in Maine the multi-zone question is settled, spelled out, and worth reading before you accept a quote that mentions rebate money.
$0
Not eligible, as verified
Maine — Efficiency Maine, per-unit heat pump rebate (the rebate your quote may simply call the Efficiency Maine heat pump rebate)
Efficiency Maine’s eligibility table is explicit: single-zone heat pumps on its list are rebate eligible, multi-zone heat pumps are not, and dual fuel is out entirely. The MXZ-D-NLHZ units we verified are all multi-zone outdoor units, so this series does not earn the per-unit rebate of $1,000 to $3,000 by income. One line of that same table softens the blow: a multi-zone unit’s design-temperature heating capacity can still be counted toward the home’s total heating capacity, which is the number your installer uses when sizing toward a whole-home rebate with other, single-zone units. The unit still helps the house qualify — it just earns no check of its own. The one theoretical door for multi-zone money is Efficiency Maine’s separate ducted whole-home program, whose rules do not repeat the exclusion: whether an MXZ with ducted air handlers qualifies hinges on a column of its equipment list our tools could not open, so we claim nothing either way.
The full Maine rules — income tiers, lifetime caps and the December deadlines behind this $0 — are on our Maine rebate page.
Maine’s income tiers change the size of the rebate, never the equipment rule: a multi-zone unit earns $0 at every income level.
Source: Efficiency Maine, residential heat pump rebates. Checked on October 10, 2026.
$2,000 possible, not promised
Clears the program’s gates on paper; NEEP listing and multi-zone wording unverified
Minnesota — Xcel Energy, cold-climate mini-split
Xcel’s $2,000 rebate for a cold-climate mini-split requires 16.0 SEER2, 9.0 EER2 and 9.5 HSPF2, a heating COP of at least 1.75 at 5F, a spot on the NEEP cold-climate list, and 5F capacity of at least 70% of the 47F rated figure. As a ductless system, the MXZ-3D24NLHZ clears every one of those on paper: 20.0 SEER2, 13.0 EER2, 10.0 HSPF2, a COP of 2.02 at 5F and 100% of rated capacity there — unlike our SUZ page, where the printed COP of 1.69 falls below the gate. Two caveats keep this at possible, not promised: the NEEP listing could not be verified, and Xcel’s sheet does not spell out how a multi-zone system is treated in the mini-split track. The same unit, fully ducted, is a different story: 14.4 SEER2 and a COP of 1.66 fail the ducted track’s gates of 15.2 and 1.75. Ask your installer which configuration the quote prices.
Source: Xcel Energy, Minnesota residential rebate summary (PDF). Checked on October 10, 2026.
$375 or $475 instant discount for the whole system
Open at participating distributors; unit list status unverified
Vermont — Efficiency Vermont, ductless heat pump
An instant discount at participating distributors: the money comes off the invoice before you pay, so there is no check and nothing to file — if your quote does not show the discount, ask why. Efficiency Vermont counts a multi-zone system as one system — “an outdoor unit and one or more indoor units” — so a MXZ with two or three wall units earns one discount: $375 for systems up to 2 tons (a ton is 12,000 BTU/h of cooling), which covers the MXZ-2D20NLHZ and MXZ-3D24NLHZ, and $475 above 2 tons for the MXZ-3D30NLHZ. Adding $600 more for integrated controls and income bonuses of $200 to $2,200 by utility can stack on top. Equipment must be on Efficiency Vermont’s qualifying list, which we could not search when we checked — before you sign, have your installer confirm your exact model number is on the current list.
The full Vermont rules — the income bonuses, Green Mountain Power’s separate rebate and Burlington’s own schedule — are on our Vermont rebate page.
A ducted MXZ system moves to Efficiency Vermont’s centrally ducted schedule instead — the $1,700 tier for systems over 2 and under 4 tons — if the pairing is on the qualifying list.
Source: Efficiency Vermont, ductless heat pump discounts. Checked on October 10, 2026.
Could not be verified
Not yet verified by us
Its NEEP row
The NEEP cold-climate list standardizes capacity and COP at 5F for every listed unit — the fairest comparison between brands, and a list Xcel’s cold-climate rebates require. The list is an interactive application that resisted our checks, so we have not read this model’s row.
The state equipment lists
Efficiency Maine’s rebate-eligible spreadsheet — whose “Ducting Configuration” column is the one place a ducted multi-zone system might yet earn Maine money — and Efficiency Vermont’s qualifying-products list both resisted our checks on our date. Per-model confirmation rests on program rules, and for Vermont it is worth getting in writing before you sign.
Indoor-unit pairings for the current line
Mitsubishi’s consumer pages for the R-454B MXZ-D-NLHZ list compatible indoor units as “coming soon”, and the per-configuration capacity tables live in Mitsubishi’s MXZ Operational Performance documents, which we did not fetch. The figures we print are the outdoor-unit system ratings in the submittal’s three columns.
Source: NEEP, cold-climate air-source heat pump specification and product list. Checked on October 10, 2026.
Compare it against the other quote, with the same numbers for both
Checked on October 10, 2026. Built from the public record, not from opinion. Every model page gets the same structure, so the numbers compare.