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The DIRECT AIR space at AirGreenSold and installed by AirGreen
DIRECT AIR × AirGreen · Heat Xtreme Pro R-454B
Heat Xtreme Pro R-454B: the only DIRECT AIR wall unit with a published figure at −30 °C.
It comes in 5 sizes from 6,000 to 24,000 BTU/h, with R-454B refrigerant. NEEP publishes, for each one, the maximum heat it still delivers at −30 °C: from 3,200 to 11,900 BTU/h. Here is what those figures mean, size by size, and what Direct Air has not published yet.
5sizes, 6,000 to 24,000 BTU/h
−30 °Ccoldest heating point listed by NEEP, all five
470GWP of R-454B, versus 2,088 for R-410A
27.4highest SEER2 (9,000 size)
$2,664highest LogisVert amount, October 14, 2026 list
−30 °C, plainly
At −30 °C, an R-454B delivers about half its rated capacity. The figure exists, and that is what sets it apart.
The other DIRECT AIR wall units have no published point that cold: with NEEP, the 23 SEER stops at −20 °C, the DA25 and the Heat Xtreme Pro R-410A at −15 °C; the 18 SEER has none. A night below −30 °C happens about once every five years at Montréal-Trudeau; below −20 °C, about 12 nights a year.
3,200BTU/h at −30 °C for the 6,000 size (53% of its rated capacity, COP 1.23)
5,100BTU/h at −30 °C for the 9,000 size (57% of its rated capacity, COP 1.11)
5,900BTU/h at −30 °C for the 12,000 size (49% of its rated capacity, COP 1.25)
8,000BTU/h at −30 °C for the 18,000 size (44% of its rated capacity, COP 1.20)
11,900BTU/h at −30 °C for the 24,000 size (50% of its rated capacity, COP 1.45)
Source: NEEP, maximum capacity at the −22 °F (−30 °C) point of each AHRI system, read October 26, 2026. Cold nights: ECCC, 1991–2020 normals, Montréal-Trudeau.
Each size’s curve
From 8.3 °C down to −30 °C: the maximum heat listed by NEEP, size by size.
Each bar is measured against the same size’s capacity at 8.3 °C. Under each bar: the share of the rated capacity and the COP at that output.
Maximum capacity listed by NEEP for AHRI system 216571371 (DIRM4-06HXPRO28-1Z + DIRM4-06HP-WM). The share is based on the rated capacity (6,000 BTU/h).
Maximum capacity listed by NEEP for AHRI system 216571372 (DIRM4-09HXPRO28-1Z + DIRM4-09HP-WM). The share is based on the rated capacity (9,000 BTU/h).
Maximum capacity listed by NEEP for AHRI system 216571373 (DIRM4-12HXPRO28-1Z + DIRM4-12HP-WM). The share is based on the rated capacity (12,000 BTU/h).
Maximum capacity listed by NEEP for AHRI system 216571374 (DIRM4-18HXPRO28-1Z + DIRM4-18HP-WM). The share is based on the rated capacity (18,000 BTU/h).
Maximum capacity listed by NEEP for AHRI system 216571375 (DIRM4-24HXPRO28-1Z + DIRM4-24HP-WM). The share is based on the rated capacity (24,000 BTU/h).
The 9,000 and 12,000 have the same published heating figures at 8.3, −8.3 and −15 °C (16,000, 12,800 and 11,500 BTU/h at most). They part ways at −30 °C (5,100 versus 5,900) and on LogisVert: only the 12,000 qualifies, since the program requires a rated cooling capacity of at least 12,000 BTU/h.
The R-410A twin
Same name, same sizes: what the switch to R-454B changes, figure by figure.
Each cell shows the R-454B in bold, then the R-410A. NEEP and ENERGY STAR figures; LogisVert amounts read from our product pages.
| Size | Max. at −15 °C BTU/h | Max. at −30 °C BTU/h | SEER2 | HSPF2 (region IV) | LogisVert |
|---|---|---|---|---|---|
| 6,000 | 7,700 / 7,500 | 3,200 / not published | 25.5 / 26.5 | 14.8 / 13.6 | — / — |
| 9,000 | 11,500 / 10,600 | 5,100 / not published | 27.4 / 28.1 | 12.5 / 11.5 | — / — |
| 12,000 | 11,500 / 12,000 | 5,900 / not published | 25.4 / 25.5 | 10.5 / 10.4 | $1,440 / $1,200 |
| 18,000 | 18,000 / 18,000 | 8,000 / not published | 21.4 / 21.5 | 11.0 / 11.3 | $2,160 / $1,800 |
| 24,000 | 24,200 / 25,000 | 11,900 / not published | 21.0 / 21.5 | 13.5 / 11.4 | $2,664 / $2,544 |
R-454B
470 GWP
Refrigerant as listed by ENERGY STAR (“Lower GWP”). Model numbers carry the DIRM4 prefix.
R-410A
2,088 GWP
The R-410A version keeps a published warranty: 10 years compressor, 5 years parts and labour (July 2022 brochure).
The choice
You want a published figure at −30 °C and a low-GWP refrigerant: R-454B. You want a written warranty today: R-410A, or the R-454B once its warranty is published.
See the R-410A →Sources: NEEP and ENERGY STAR, rechecked October 26, 2026; GWP as listed by ENERGY STAR; LogisVert: October 14, 2026 list.
Not published yet
What we know about the R-454B, and what we confirm before quoting.
As of October 26, 2026, Direct Air has published neither a brochure nor a warranty for the DIRM4 models. So we do not borrow the R-410A figures for them.
Published and checked
- AHRI numbers 216571371 to 216571375, listed with NEEP and ENERGY STAR
- Capacities and COP at 8.3, −8.3, −15 and −30 °C
- SEER2, EER2 and HSPF2; ENERGY STAR cold-climate certification for all five sizes
- R-454B refrigerant (GWP 470)
- LogisVert amounts for the 12,000, 18,000 and 24,000
Not yet published
- Warranty (compressor, parts, labour)
- Breaker, maximum line length and height difference
- Unit dimensions, weight and sound level
- Wi-Fi module and available controls
| Size | AHRI | Outdoor | Indoor | ENERGY STAR certified on |
|---|---|---|---|---|
| 6,000 | 216571371 | DIRM4-06HXPRO28-1Z | DIRM4-06HP-WM | 2026-05-06 |
| 9,000 | 216571372 | DIRM4-09HXPRO28-1Z | DIRM4-09HP-WM | 2026-05-06 |
| 12,000 | 216571373 | DIRM4-12HXPRO28-1Z | DIRM4-12HP-WM | 2026-05-06 |
| 18,000 | 216571374 | DIRM4-18HXPRO28-1Z | DIRM4-18HP-WM | 2026-05-06 |
| 24,000 | 216571375 | DIRM4-24HXPRO28-1Z | DIRM4-24HP-WM | 2026-05-06 |
Model numbers as listed by ENERGY STAR; ENERGY STAR certification date (YYYY-MM-DD).
Questions
What people ask us, and what the sources say.
Does the Heat Xtreme Pro R-454B heat at −35 °C?
No operating range is published for the R-454B: the −35 °C comes from the brochure of the R-410A version (July 2022), and Direct Air has not yet published a brochure for the DIRM4 models. The coldest point listed by NEEP is −30 °C (−22 °F): from 3,200 BTU/h (6,000) to 11,900 BTU/h (24,000) at most. No figure is published below that.
Why do the 9,000 and 12,000 have the same heating figures?
NEEP gives them the same maximum capacities at 8.3, −8.3 and −15 °C (11,500 BTU/h at −15 °C for both). They differ at −30 °C (5,100 versus 5,900 BTU/h), in rated cooling (9,000 versus 12,000 BTU/h) and on LogisVert: only the 12,000 qualifies.
What warranty does the R-454B have?
As of October 26, 2026, Direct Air has not published a warranty for the DIRM4 models. We will put it on the quote as soon as Direct Air publishes it; until then, we do not carry over the R-410A one (10 years compressor, 5 years parts and labour).
How much does LogisVert give for an R-454B?
On the October 14, 2026 list: $1,440 for the 12,000, $2,160 for the 18,000 and $2,664 for the 24,000. The 6,000 and 9,000 do not qualify (under 12,000 BTU/h of rated cooling capacity). Hydro-Québec confirms the amount when you apply.
What does a GWP of 470 change for me?
GWP measures a refrigerant’s warming effect if it escapes. R-454B (470) has a GWP about 4.4 times lower than R-410A (2,088), per the values listed by ENERGY STAR. In normal use the circuit is sealed: the figure matters mostly in case of a leak and at the end of the unit’s life.
AirGreen × DIRECT AIR
Your Heat Xtreme Pro R-454B, chosen for your coldest nights and installed by AirGreen.
We start from the published −30 °C figure and your room to choose the size. The quote shows the AHRI number and the indicative LogisVert amount; the warranty is added as soon as Direct Air publishes it.
Sold and installed by AirGreen · RBQ 5645-9605-01
Sources, checked on October 26, 2026
- NEEP listings for AHRI systems 216571371 to 216571375 (Heat Xtreme Pro R-454B) and 207743723 to 207743727 (R-410A), read October 14, 2026 and rechecked October 26, 2026.
- ENERGY STAR, Certified Air-Source Heat Pumps (data.energystar.gov, dataset w7cv-9xjt), Canadian market, read October 14, 2026 and rechecked October 26, 2026.
- Hydro-Québec, LogisVert eligible heat pump list (owner, existing home) of October 14, 2026; LogisVert residential participation guide, version 1.10, September 15, 2026.
- Direct Air Heat Xtreme Pro brochure, French and English, printed July 2022 (in our files).
- ECCC, Canadian Climate Normals 1991–2020, Montréal-Trudeau (7025250), read October 14, 2026.
- airgreen.ca product pages (metafields), reread October 26, 2026.
LogisVert amounts are indicative: Hydro-Québec confirms them when you apply. Prices on quote. Page updated October 26, 2026.