The DIRECT AIR space at AirGreenSold and installed by AirGreen
DIRECT AIR × AirGreen · Wall heat pumps
DIRECT AIR wall heat pumps: five series, only one with a published figure at −30 °C.
The wall range has 20 models, from 6,000 to 24,000 BTU/h. In Montreal, what sets them apart is the heat they still deliver at −15, −20 or −30 °C. Here are the published figures for each, and what they mean in a Montreal winter.
−30 °Ccoldest heating point listed by NEEP (Heat Xtreme Pro R-454B)
12 nightsbelow −20 °C per year at Montréal-Trudeau (1991–2020 normals)
The five series
Five wall series, ranked by their coldest published point.
Order: the coldest heating point published by NEEP, then the share of their rated capacity they still deliver at −15 °C. Warranties and LogisVert amounts: on the DIRECT AIR page and on each series page.
Sources: NEEP and ENERGY STAR, read October 14, 2026 and rechecked October 26, 2026. Share of capacity: ENERGY STAR rated heat at −15 °C ÷ the size’s rated capacity. “BTU/h max”: NEEP maximum capacity at each size’s coldest point.
Maximum heating capacity listed by NEEP at each temperature, with the COP at that output. An empty cell means no figure is published at that temperature, not that the unit stops.
Maximum capacity listed by NEEP, in BTU/h (COP in brackets), size 6,000.
Outdoor temperature
Heat Xtreme Pro R-454B
Heat Xtreme Pro R-410A
8.3 °C
11,000 (2.96)
13,241 (3.73)
−8.3 °C
8,700 (2.77)
10,041 (2.45)
−15 °C
7,700 (2.40)
7,500 (2.09)
−20 °C
—
—
−30 °C
3,200(1.23)
—
At −15 °C, share of rated capacity (ENERGY STAR)
128%(7,700)
125%(7,500)
Maximum capacity listed by NEEP, in BTU/h (COP in brackets), size 9,000.
Outdoor temperature
Heat Xtreme Pro R-454B
Heat Xtreme Pro R-410A
DA25
18 SEER
8.3 °C
16,000 (3.35)
15,296 (2.99)
13,241 (3.73)
not listed
−8.3 °C
12,800 (1.75)
12,371 (2.04)
9,611 (2.29)
not listed
−15 °C
11,500 (1.80)
10,600 (1.97)
8,581 (2.19)
not listed
−20 °C
—
—
—
—
−30 °C
5,100(1.11)
—
—
—
At −15 °C, share of rated capacity (ENERGY STAR)
128%(11,500)
118%(10,600)
83%(7,500)
not listed
Maximum capacity listed by NEEP, in BTU/h (COP in brackets), size 12,000.
Outdoor temperature
Heat Xtreme Pro R-454B
23 SEER
Heat Xtreme Pro R-410A
DA25
18 SEER
8.3 °C
16,000 (3.35)
12,300 (3.08)
15,613 (2.95)
13,941 (3.55)
not listed
−8.3 °C
12,800 (1.75)
10,100 (1.95)
13,112 (2.11)
9,921 (2.31)
not listed
−15 °C
11,500 (1.80)
9,600 (1.85)
12,000 (1.80)
8,000 (2.39)
not listed
−20 °C
—
9,300(1.79)
—
—
—
−30 °C
5,900(1.25)
—
—
—
—
At −15 °C, share of rated capacity (ENERGY STAR)
96%(11,500)
70%(8,400)
100%(12,000)
67%(8,000)
not listed
Maximum capacity listed by NEEP, in BTU/h (COP in brackets), size 18,000.
Outdoor temperature
Heat Xtreme Pro R-454B
23 SEER
Heat Xtreme Pro R-410A
DA25
18 SEER
8.3 °C
19,500 (2.79)
21,225 (2.91)
23,211 (3.01)
21,191 (3.25)
not listed
−8.3 °C
19,200 (2.00)
14,960 (2.28)
19,200 (1.99)
15,934 (2.37)
not listed
−15 °C
18,000 (1.92)
13,770 (1.87)
18,000 (1.80)
11,300 (2.02)
not listed
−20 °C
—
13,170(1.79)
—
—
—
−30 °C
8,000(1.20)
—
—
—
—
At −15 °C, share of rated capacity (ENERGY STAR)
100%(18,000)
71%(12,700)
100%(18,000)
63%(11,300)
not listed
Maximum capacity listed by NEEP, in BTU/h (COP in brackets), size 24,000.
Outdoor temperature
Heat Xtreme Pro R-454B
Heat Xtreme Pro R-410A
DA25
18 SEER
8.3 °C
29,700 (3.39)
30,995 (3.36)
27,000 (2.57)
not listed
−8.3 °C
23,200 (2.35)
24,485 (1.98)
20,000 (2.10)
not listed
−15 °C
24,200 (2.34)
25,000 (2.21)
17,500 (2.04)
not listed
−20 °C
—
—
—
—
−30 °C
11,900(1.45)
—
—
—
At −15 °C, share of rated capacity (ENERGY STAR)
101%(24,200)
104%(25,000)
65%(15,500)
not listed
NEEP lists data at 47 °F (8.3 °C), 17 °F (−8.3 °C), 5 °F (−15 °C) and at the coldest point the manufacturer declares (−4 °F = −20 °C, −22 °F = −30 °C). Some −15 °C figures are higher than the −8.3 °C ones: these are the values as NEEP publishes them. The 18 SEER is listed with neither NEEP nor ENERGY STAR.
Montreal’s winter
Montreal’s winter in numbers, against those published points.
Environment and Climate Change Canada 1991–2020 climate normals, Montréal-Trudeau station.
−13.5 °Caverage daily low in January
12 nightsbelow −20 °C, on average each year
0.21 nightbelow −30 °C per year, about one every five years
−31.8 °Cthe coldest of 1991–2020 (January 27, 1994)
Typical January nights
Average low of −13.5 °C: series with a point listed at −15 °C or colder have a figure for these nights.
Series with a published figure:Heat Xtreme Pro R-454B23 SEERHeat Xtreme Pro R-410ADA25
The ≈ 12 nights below −20 °C
Only series with a point listed at −20 °C or colder have a figure for these nights.
Series with a published figure:Heat Xtreme Pro R-454B23 SEER
The rare nights below −30 °C
About one night every five years. Only one series has a point listed at that temperature.
Series with a published figure:Heat Xtreme Pro R-454B
Source: ECCC, Canadian Climate Normals 1991–2020, MONTREAL TRUDEAU (AIRPORT), climate ID 7025250, page updated August 10, 2026, read October 14, 2026. Matching with NEEP points: AirGreen calculation.
Same head, different outdoor unit
The DA25 and the Heat Xtreme Pro R-410A share the same indoor unit. The difference is outside.
ENERGY STAR and NEEP list both series with the same DIRM-xxHP-WM wall head, and the Direct Air brochures give it the same dimensions. The outdoor unit is what changes the cold-weather figures.
Size
Wall head
DA25 at −15 °C
Heat Xtreme Pro R-410A at −15 °C
Gap
LogisVert DA25 · HXP
9,000
DIRM-09HP-WM
7,500 BTU/h
10,600BTU/h
+41%
— · —
12,000
DIRM-12HP-WM
8,000 BTU/h
12,000BTU/h
+50%
$450 · $1,200
18,000
DIRM-18HP-WM
11,300 BTU/h
18,000BTU/h
+59%
$745 · $1,800
24,000
DIRM-24HP-WM
15,500 BTU/h
25,000BTU/h
+61%
$810 · $2,544
What this wall head does, as Direct Air describes it
12-speed fan · Sleep mode · Turbo mode · Eco mode · Left or right drain · Refrigerant leak detector · Biofilter · Shutter position memory · Anti-corrosion coating of the fins · “Follow me” function · Self-cleaning · Motion detector · Humidity sensor for increased comfort · Optional Wi-Fi.
Heat Xtreme Pro (July 2022) and DA25 (March 2023) brochures. Some features are marked “optional” there: we confirm the list with the quote. The DA25 brochure writes DIRM-xxDA25-WM for the same head; ENERGY STAR and NEEP list it as DIRM-xxHP-WM.
Installation
What each series asks of the installer, size by size.
Values from the Direct Air brochures and spec pages. “Not published”: the brand does not give the figure; we confirm it with Direct Air before quoting.
6,000 BTU/h
Heat Xtreme Pro R-454B
Heat Xtreme Pro R-410A
Power supply
not published
208/230 V, 1 ph, 60 Hz
Max. breaker or fuse
not published
15 A
Line set, liquid · gas (in.)
not published
1/4 · 3/8
Max. line length
not published
25 m
Max. height difference
not published
10 m
Refrigerant charge
not published
1,180 g
Outdoor sound
not published
36 dB(A) (published; to be confirmed)
9,000 BTU/h
Heat Xtreme Pro R-454B
Heat Xtreme Pro R-410A
DA25
18 SEER
Power supply
not published
208/230 V, 1 ph, 60 Hz
208/230 V, 1 ph, 60 Hz
115 V, 1 ph, 60 Hz
Max. breaker or fuse
not published
15 A
15 A
20 A
Line set, liquid · gas (in.)
not published
1/4 · 3/8
1/4 · 3/8
1/4 · 3/8
Max. line length
not published
25 m
25 m
not published
Max. height difference
not published
10 m
10 m
not published
Refrigerant charge
not published
1,180 g
1,080 g
not published
Outdoor sound
not published
54.5 dB(A)
53 dB(A)
53 dB(A)
18 SEER 9,000: the 2022 brochure lists 115 V; the model on our page carries the “-230” suffix. We confirm the voltage with Direct Air before quoting.
12,000 BTU/h
Heat Xtreme Pro R-454B
23 SEER
Heat Xtreme Pro R-410A
DA25
18 SEER
Power supply
not published
208–230 V, 1 ph, 60 Hz
208/230 V, 1 ph, 60 Hz
208/230 V, 1 ph, 60 Hz
208–230 V, 1 ph, 60 Hz
Max. breaker or fuse
not published
15 A
15 A
15 A
25 A
Line set, liquid · gas (in.)
not published
1/4 · 3/8
1/4 · 1/2
1/4 · 1/2
1/4 · 3/8
Max. line length
not published
20 m
25 m
25 m
not published
Max. height difference
not published
10 m
10 m
10 m
not published
Refrigerant charge
not published
1,160 g
1,180 g
1,080 g
not published
Outdoor sound
not published
53 dB(A)
56 dB(A)
53.5 dB(A)
54 dB(A)
18,000 BTU/h
Heat Xtreme Pro R-454B
23 SEER
Heat Xtreme Pro R-410A
DA25
18 SEER
Power supply
not published
208–230 V, 1 ph, 60 Hz
208/230 V, 1 ph, 60 Hz
208/230 V, 1 ph, 60 Hz
208–230 V, 1 ph, 60 Hz
Max. breaker or fuse
not published
20 A
25 A
25 A
20 A
Line set, liquid · gas (in.)
not published
1/4 · 1/2
1/4 · 1/2
1/4 · 1/2
1/4 · 1/2
Max. line length
not published
20 m
30 m
30 m
not published
Max. height difference
not published
10 m
20 m
20 m
not published
Refrigerant charge
not published
1,550 g
1,850 g
1,600 g
not published
Outdoor sound
not published
55 dB(A)
59 dB(A)
58 dB(A)
56 dB(A)
24,000 BTU/h
Heat Xtreme Pro R-454B
Heat Xtreme Pro R-410A
DA25
18 SEER
Power supply
not published
208/230 V, 1 ph, 60 Hz
208/230 V, 1 ph, 60 Hz
208–230 V, 1 ph, 60 Hz
Max. breaker or fuse
not published
35 A
30 A
30 A
Line set, liquid · gas (in.)
not published
3/8 · 5/8
3/8 · 5/8
3/8 · 5/8
Max. line length
not published
50 m
50 m
not published
Max. height difference
not published
25 m
25 m
not published
Refrigerant charge
not published
2,600 g
2,350 g
not published
Outdoor sound
not published
62 dB(A)
60 dB(A)
58 dB(A)
Model numbers
A model number on a rating plate or a quote? Find the unit.
Direct Air does not publish what its model numbers mean. This table links each number to the unit, its AHRI number and its product page.
GWP: global warming potential, as listed by ENERGY STAR (read October 14, 2026).
Questions
What people ask us, and what the sources say.
Which DIRECT AIR wall heat pump still heats at −30 °C?
The Heat Xtreme Pro R-454B is the only DIRECT AIR wall series with a heating point listed at −30 °C (−22 °F) by NEEP: from 3,200 BTU/h (6,000) to 11,900 BTU/h (24,000) at most. With NEEP, the 23 SEER stops at −20 °C; the DA25 and Heat Xtreme Pro R-410A at −15 °C. The 18 SEER is listed with neither ENERGY STAR nor NEEP.
Are the 6,000 and 9,000 BTU/h wall units eligible for LogisVert?
No. Hydro-Québec’s LogisVert guide (version 1.10, September 15, 2026) requires a rated cooling capacity of at least 12,000 BTU/h. No 6,000 or 9,000 BTU/h DIRECT AIR wall unit is on the October 14, 2026 list. The full rules are on the DIRECT AIR page.
Is the 18 SEER ENERGY STAR certified?
No. As of October 26, 2026, its four AHRI numbers are listed with neither ENERGY STAR nor NEEP. It therefore has no published cold-weather heating figure and is not eligible for LogisVert. Its 2022 brochure states heating down to −20 °C.
Does a DIRECT AIR wall unit come with Wi-Fi?
The Heat Xtreme Pro brochure says “Wi-Fi ready” and the DA25 brochure “Optional Wi-Fi”. The 18 SEER brochure does not mention it. No brochure is published yet for the R-454B: we confirm the module with the quote.
Why do the DA25 and the Heat Xtreme Pro share the same indoor unit?
ENERGY STAR and NEEP list both series with the DIRM-xxHP-WM wall head, and the brochures give it the same dimensions. The outdoor unit is what differs: at 12,000 BTU/h, the Heat Xtreme Pro outdoor unit delivers 12,000 BTU/h at −15 °C, the DA25 outdoor unit 8,000 BTU/h.
Is there a 115 V DIRECT AIR wall unit?
The 18 SEER brochure (2022) lists 115 V for the 9,000 BTU/h model. The model on our page carries the “-230” suffix: we confirm its voltage with Direct Air before quoting. The DA25 and Heat Xtreme Pro R-410A are 208/230 V according to their brochures.
AirGreen × DIRECT AIR
Your DIRECT AIR wall unit, chosen for your winter and installed by AirGreen.
Tell us the room, its size and your current heating: we suggest the series and size, with the AHRI number and the indicative LogisVert amount on the quote.
NEEP Cold Climate Air Source Heat Pump list, listings by AHRI number, 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 brochures: Heat Xtreme Pro (July 2022), DA25 (March 2023), 18 SEER (June 2022); 23 SEER page on directairhvac.com, read October 14, 2026.
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.
