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Added to comparison 
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Added to comparison 
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Added to comparison 
YORK · Z Series wall unit
YORK at AirGreenSold and installed by AirGreen in Montreal, Laval, Longueuil, the South Shore and the North Shore.
The full YORK rangeYORK Z Series wall-mounted heat pump · checked October 26, 2026
YORK Z Series wall-mounted heat pump: heating down to −30 °C, built-in Wi-Fi and seven fan speeds
The Z Series is the only YORK wall unit in our catalogue whose heating range goes down to −30 °C. The 9,000 BTU/h is rated 28 SEER, and the indoor unit goes down to 22 dB(A) at its lowest speed. All three sizes share the same 38 × 13 × 8 in. indoor cabinet.
Z SeriesThe only YORK wall unit in our catalogue whose heating range goes down to −30 °C.
ZZ Series−30 °C
P · XP and X Series−20 °C
80%of heating capacity at −30 °C (−22 °F), claimed by YORK, without the reference capacity.
22 dB(A)at the lowest of seven speeds, on the 9,000 BTU/h.
YORK 2020 catalogue, pp. 15 and 16.
3Z Series listings: 9,000, 12,000 and 18,000 BTU/h
−30 °Climit of the heating range (−22 °F)
28 SEER
DHZ09, with 15 EER
22 dB(A)9,000 BTU/h indoor unit, lowest speed
AirGreen × YORKSold and installed by AirGreenDown to −30 °CBuilt-in Wi-Fi Seven fan speedsUp to 28 SEERMontreal · Laval · Longueuil · South Shore · North Shore
01 · Model by model
The three Z Series sizes, side by side.
Three sizes on 208/230 V. Select a size: its ratings, dimensions, circuit and line sets.
DHZ09NWB21S + DHZ09CSB21SZ Series · 9,000 BTU/h · 208/230 V · AHRI 8578585
See the product page →- Rated cooling
- 9,000 BTU/hrange 1,535 to 12,966
- Heating at 8.3 °C
- 9,000 BTU/hrange 2,388 to 13,645
- SEER · EER · HSPF
- 28 · 15 · 10.5
- Heats
- down to −30 °C
- MCA · MOCP
- 12 A · 15 A
- Indoor unit
- 38 × 13 × 8 in.31 lb · max. airflow 412 CFM
- Outdoor unit
- 35 × 24 × 15 in.99 lb
- Indoor sound
- 41 → 22 dB(A)highest → lowest speed
- Outdoor sound
- 53 dB(A)
- Liquid · vapour lines
- 1/4 · 1/2 in.
- Max. length · lift
- 49.2 ft · 33 ft
- Factory charge
- 49.38 oz
DHZ12NWB21S + DHZ12CSB21SZ Series · 12,000 BTU/h · 208/230 V · AHRI 8578589
See the product page →- Rated cooling
- 12,000 BTU/hrange 2,900 to 15,354
- Heating at 8.3 °C
- 13,000 BTU/hrange 3,071 to 18,766
- SEER · EER · HSPF
- 23 · 12.7 · 10.5
- Heats
- down to −30 °C
- MCA · MOCP
- 13 A · 20 A
- Indoor unit
- 38 × 13 × 8 in.31 lb · max. airflow 471 CFM
- Outdoor unit
- 35 × 24 × 15 in.97 lb
- Indoor sound
- 42 → 23 dB(A)highest → lowest speed
- Outdoor sound
- 55 dB(A)
- Liquid · vapour lines
- 1/4 · 1/2 in.
- Max. length · lift
- 65.5 ft · 33 ft
- Factory charge
- 49.38 oz
DHZ18NWB21S + DHZ18CSB21SZ Series · 18,000 BTU/h · 208/230 V · AHRI 8578593
See the product page →- Rated cooling
- 18,000 BTU/hrange 4,436 to 21,496
- Heating at 8.3 °C
- 19,000 BTU/hrange 3,753 to 24,566
- SEER · EER · HSPF
- 21 · 12.5 · 10.5
- Heats
- down to −30 °C
- MCA · MOCP
- 19 A · 30 A
- Indoor unit
- 38 × 13 × 8 in.31 lb · max. airflow 530 CFM
- Outdoor unit
- 39 × 31 × 17 in.141 lb
- Indoor sound
- 48 → 26 dB(A)highest → lowest speed
- Outdoor sound
- 59 dB(A)
- Liquid · vapour lines
- 1/4 · 5/8 in.
- Max. length · lift
- 82 ft · 33 ft
- Factory charge
- 70.54 oz
SEER, EER and HSPF ratings under AHRI 210/240, heating rated at 8.3 °C (47 °F) outdoors, as printed by YORK in 2020. Dimensions in inches: width × height × depth; net weights.
02 · Versus the X
What the Z adds to the X, size for size.
At 9,000, 12,000 and 18,000 BTU/h, the Z versus the X, the closest YORK series.
| Item | Z Series | X Series | Difference vs X |
|---|---|---|---|
| SEER | 28 | 23 | +5 |
| EER | 15 | 14.29 | +0.71 |
| HSPF | 10.5 | 10.5 | equal |
| Rated heating at 8.3 °C | 9,000 BTU/h | 11,000 BTU/h | −2,000 BTU/h |
| Max. heating at 8.3 °C | 13,645 BTU/h | 12,000 BTU/h | +1,645 BTU/h |
| Heats down to | −30 °C | −20 °C | limit 10 °C lower |
| Indoor sound at lowest | 22 dB(A) | 29 dB(A) | −7 dB(A) |
| Outdoor sound | 53 dB(A) | 53 dB(A) | equal |
| Outdoor unit weight | 99 lb | 78 lb | +21 lb |
| Refrigerant vapour line | 1/2 in. | 3/8 in. | different |
| Item | Z Series | X Series | Difference vs X |
|---|---|---|---|
| SEER | 23 | 22 | +1 |
| EER | 12.7 | 12.5 | +0.2 |
| HSPF | 10.5 | 10.1 | +0.4 |
| Rated heating at 8.3 °C | 13,000 BTU/h | 13,000 BTU/h | equal |
| Max. heating at 8.3 °C | 18,766 BTU/h | 14,000 BTU/h | +4,766 BTU/h |
| Heats down to | −30 °C | −20 °C | limit 10 °C lower |
| Indoor sound at lowest | 23 dB(A) | 29 dB(A) | −6 dB(A) |
| Outdoor sound | 55 dB(A) | 54 dB(A) | +1 dB(A) |
| Outdoor unit weight | 97 lb | confirmed in the quote | — |
| Refrigerant vapour line | 1/2 in. | 1/2 in. | equal |
| Item | Z Series | X Series | Difference vs X |
|---|---|---|---|
| SEER | 21 | 20 | +1 |
| EER | 12.5 | 12.5 | equal |
| HSPF | 10.5 | 10 | +0.5 |
| Rated heating at 8.3 °C | 19,000 BTU/h | 19,800 BTU/h | −800 BTU/h |
| Max. heating at 8.3 °C | 24,566 BTU/h | 23,498 BTU/h | +1,068 BTU/h |
| Heats down to | −30 °C | −20 °C | limit 10 °C lower |
| Indoor sound at lowest | 26 dB(A) | 35 dB(A) | −9 dB(A) |
| Outdoor sound | 59 dB(A) | 55 dB(A) | +4 dB(A) |
| Outdoor unit weight | 141 lb | 114 lb | +27 lb |
| Refrigerant vapour line | 5/8 in. | 5/8 in. | equal |
The difference reads “Z Series minus the other series”; in green, the Z’s advantage, in brown, the other series’. The three-series comparison is on the YORK wall units page.
AirGreen × YORK
The Z Series, designed by YORK, installed by AirGreen.
AirGreen picks the size with you, places the outdoor unit clear of the snow and installs both units.
What YORK brings
- Heating range down to −30 °CThe lowest of our YORK wall units.
- Built-in
Wi-Fi EWPE Smart app, no adapter. - Seven speedsFrom 41 to 22 dB(A) at 9,000 BTU/h.
What AirGreen brings
- Sold and installed by AirGreenIn Montreal, Laval, Longueuil, the South Shore and the North Shore.
- Free visitWe measure the rooms, the insulation, the electrical service and the refrigerant line route.
- Clear quoteThe exact model, what is included and the price, in writing.
- RBQ 5645-9605-01Subcategories 15.8, 15.10 and 16.
The result: a Z Series at the right size, installed by AirGreen.
The YORK shop · Z Series
All 3 Z Series units, right below.
One listing per size, with its indoor and outdoor model numbers and its AHRI number.
Everything to know · Z Series
03 · Seven speeds
Seven fan speeds, and what you hear at each.
The P and the X have four published speeds; the Z has seven, and goes lower: 22, 23 and 26 dB(A) depending on size.
41
38
34
30
26
24
22
42
39
35
31
27
25
23
48
43
39
35
31
28
26
Height: sound pressure level in dB(A), from the highest speed (S1) to the lowest (S7); under each bar, the airflow in CFM. YORK 2020 catalogue, p. 16.
04 · Features
What YORK builds into the Z.
Built-in Wi-Fi
No adapter: the Z runs from the EWPE Smart app, according to YORK.
One indoor cabinet
The same 38 × 13 × 8 in., 31 lb cabinet for all three sizes; airflow and sound change with size.
DRCZ remote
Specific to the Z; a remote holder is offered as an accessory.
“Whisper-quiet operation”
YORK’s indoor-unit claim, backed by the 22 to 26 dB(A) published at the lowest speed.
Easy-to-read display
Display and indicator lights, according to YORK.
Slim and compact
Per YORK: 8 in. deep for the indoor unit.
05 · Deep cold
−30 °C: what YORK publishes, and what is missing.
−30 °Climit of the heating range (−22 °F); the P and the X stop at −20 °C.
80%of heating capacity at −30 °C, according to YORK; the reference capacity is not stated.
24 °Ctop of the heating range (75 °F), as for the P and the X.
0/3Z AHRI numbers on the October 26, 2026 LogisVert list or at ENERGY STAR.
- ENERGY STAR has no record for the Z’s three AHRI numbers (searched October 26, 2026), so we give no measured capacity at −8.3 °C or −15 °C. The “80%” remains a manufacturer claim.
- Montreal’s cold in figures is on the YORK wall units page.
Frequently asked questions
What people ask us about the Z Series.
Does the Z Series really heat at −30 °C?
Its published heating range goes down to −30 °C (−22 °F), and YORK claims 80% of heating capacity there, without stating the reference capacity. No ENERGY STAR record gives a measured capacity for the Z.
Does it need a Wi-Fi adapter?
No. The Z has
Is the Z quiet enough for a bedroom?
At its lowest speed, the indoor unit goes down to 22 dB(A) at 9,000 BTU/h, 23 at 12,000 and 26 at 18,000, according to YORK.
Which sizes does YORK publish for the Z?
9,000, 12,000 and 18,000 BTU/h only. Beyond that, the X Series goes to 24,000 and the P Series to 36,000 BTU/h, with a heating range down to −20 °C.
Does the Z Series qualify for LogisVert?
No: none of the 3 AHRI numbers on our Z Series listings is on
AirGreen · Air conditioning & heating
Your Z Series, for the room that must heat in deep cold, installed by AirGreen.
At the free visit, we choose the size, place the outdoor unit and plan backup heat for cold below −30 °C.
RBQ 5645-9605-01Subcategories 15.8, 15.10 and 16
Free estimateAt home, no obligation
Sold and installed by AirGreenMontreal, Laval, Longueuil, South Shore and North Shore
Showroom1370 Joliot-Curie Street, unit 712, Boucherville
Sources and dates checked
- YORK, Mini-Split Systems catalogue
PUBL-7782v6 (November 2020): P, X and Z Series (pp. 9 to 16), features (p. 8), controls and accessories (pp. 40 to 44), listing and warranty (pp. 3 and 4); copy in our documents, re-read October 26, 2026. Hydro-Québec , LogisVert eligible heat pump list, file of October 26, 2026, “homeowner, existing house” profile, searched by AHRI number.- ENERGY STAR, Certified Air-Source Heat Pumps, dataset w7cv-9xjt, searched by AHRI number on October 26, 2026.
- airgreen.ca product pages: model and AHRI numbers of the units we carry, read October 26, 2026.
Price on quote. YORK® is a registered trademark, used here to identify the products we sell and install.