Air-source heat pumps
Mitsubishi P-series PUZ-AK48NLHZ Hyper-Heat Ducted System
Prices are the equipment only — the appliance, before install labour. Where we could only find an installed price, the labour is a national planning estimate backed out to approximate the equipment, so treat those as rough. Get contractor quotes for the install itself.
Mitsubishi's 4-ton ducted Hyper-Heat system on R-454B — the best-documented cold-climate performer in this set, NEEP-listed with a full 5°F dataset.
Our take
This is the ducted Hyper-Heat most buyers actually want when they say 'Mitsubishi': NEEP-listed, 87% of rated capacity still available at 5°F, a measured COP of 1.9 at 5°F, and rated to -13°F on current R-454B. It pairs with a conventional air handler and an open thermostat. You pay a premium and must use a Diamond dealer for the full warranty.
Best for
Cold-climate ducted homes that want verified low-temperature capacity, not marketing claims.
Watch out for
Premium pricing and Diamond-dealer requirement; registration within 90 days for full warranty.
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 87% 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 87% 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 87% 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 87% 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 87% 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 87% 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 |
|---|---|---|---|
| SupplyHouse.com
online retailer |
Mitsubishi P-series PUZ-AK48NL 48,000 BTU R-454B condenser
PUZ-AK48NL |
$5,928 | 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
Carrier Infinity 24 Heat Pump with Greenspeed Intelligence (25VNA4)
Carrier's flagship variable-speed ducted heat pump, and one of very few conventional split systems that holds full heating capacity down to 0°F.
Mitsubishi M-Series SUZ-AK36NLHZ Hyper-Heating
Mitsubishi's ducted Hyper-Heating outdoor unit, pairable with a conventional air handler for whole-house ducted retrofit.
Bosch IDS Ultra Inverter Ducted Split
Variable-speed ducted heat pump that undercuts the premium American brands on price while matching most of their cold-weather capability.
Daikin Fit Aurora DH9VS
Side-discharge variable-speed heat pump with a small footprint, rated for cold-climate operation to -13°F.
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.