YORK · X Series wall unit YORK at AirGreenSold and installed by AirGreen in Montreal, Laval, Longueuil, the South Shore and the North Shore.

YORK X Series wall-mounted heat pump · checked October 26, 2026

YORK X Series wall-mounted heat pump: our most efficient YORK wall unit on 115 V, from 9,000 to 24,000 BTU/h

On 115 V, the X is rated 23 SEER at 9,000 BTU/h and 22 SEER at 12,000, versus 16 for the P. On 208/230 V it goes up to 24,000 BTU/h, and its 9,000 reaches 14.29 EER. YORK builds it on a heavy-gauge steel frame with a corrosion-resistant coating.

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X Series

The X versus the P, size by size, in SEER.

9,000115 VX · 23

P · 16

12,000115 VX · 22

P · 16

9,000208/230 VX · 23

P · 16

12,000208/230 VX · 22

P · 16

18,000208/230 VX · 20

P · 16

24,000208/230 VX · 20

P · 16

X Series, SEERP Series, same size

YORK 2020 catalogue, pp. 9 to 14; AHRI 210/240 ratings.

6X Series listings: 2 on 115 V, 4 on 208/230 V

23 SEER at 9,000 BTU/h, on 115 V as on 208/230 V

11,000 BTU/h rated heating, DHX09 on 208/230 V

14.29 EER DHX09 on 208/230 V

AirGreen × YORKSold and installed by AirGreen22 to 23 SEER on 115 VHeavy gauge steel frameCorrosion-resistant coatingDown to −20 °CMontreal · Laval · Longueuil · South Shore · North Shore

01 · Model by model

The six X Series models, on 115 V and 208/230 V.

Six models, two of them on 115 V. Select a size to see its full data, as printed in YORK’s catalogue, except the 12,000 BTU/h 208/230 V outdoor weight, inconsistent there.

Size

DHX09NWB21S + DHX09CSB21SX Series · 9,000 BTU/h · 208/230 V · AHRI 8578569

See the product page →

Rated cooling: 9,000 BTU/hrange 3,099 to 9,599
Heating at 8.3 °C: 11,000 BTU/hrange 1,911 to 12,000
SEER · EER · HSPF: 23 · 14.29 · 10.5
Heats: down to −20 °C
MCA · MOCP: 9 A · 15 A
Indoor unit: 33 × 11 × 8 in.22 lb · max. airflow 318 CFM
Outdoor unit: 33 × 21 × 13 in.78 lb
Indoor sound: 43 → 29 dB(A)highest → lowest speed
Outdoor sound: 53 dB(A)
Liquid · vapour lines: 1/4 · 3/8 in.
Max. length · lift: 49.2 ft · 33 ft
Factory charge: 45.85 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 P and the Z

The X between the P and the Z, in figures.

At each 208/230 V size, the X versus the P and, up to 18,000 BTU/h, versus the Z.

Size (208/230 V)

X Series versus the P and Z at 9,000 BTU/h
Item	X Series	P Series	Difference vs P	Z Series	Difference vs Z
SEER	23	16	+7	28	−5
EER	14.29	10	+4.29	15	−0.71
HSPF	10.5	9	+1.5	10.5	equal
Rated heating at 8.3 °C	11,000 BTU/h	9,500 BTU/h	+1,500 BTU/h	9,000 BTU/h	+2,000 BTU/h
Max. heating at 8.3 °C	12,000 BTU/h	12,000 BTU/h	equal	13,645 BTU/h	−1,645 BTU/h
Heats down to	−20 °C	−20 °C	equal	−30 °C	limit 10 °C higher
Indoor sound at lowest	29 dB(A)	28 dB(A)	+1 dB(A)	22 dB(A)	+7 dB(A)
Outdoor sound	53 dB(A)	52 dB(A)	+1 dB(A)	53 dB(A)	equal
Outdoor unit weight	78 lb	65 lb	+13 lb	99 lb	−21 lb
Refrigerant vapour line	3/8 in.	3/8 in.	equal	1/2 in.	different

X Series versus the P and Z at 12,000 BTU/h
Item	X Series	P Series	Difference vs P	Z Series	Difference vs Z
SEER	22	16	+6	23	−1
EER	12.5	9.25	+3.25	12.7	−0.2
HSPF	10.1	9	+1.1	10.5	−0.4
Rated heating at 8.3 °C	13,000 BTU/h	13,000 BTU/h	equal	13,000 BTU/h	equal
Max. heating at 8.3 °C	14,000 BTU/h	14,000 BTU/h	equal	18,766 BTU/h	−4,766 BTU/h
Heats down to	−20 °C	−20 °C	equal	−30 °C	limit 10 °C higher
Indoor sound at lowest	29 dB(A)	29 dB(A)	equal	23 dB(A)	+6 dB(A)
Outdoor sound	54 dB(A)	53 dB(A)	+1 dB(A)	55 dB(A)	−1 dB(A)
Outdoor unit weight	confirmed in the quote	70 lb	—	97 lb	—
Refrigerant vapour line	1/2 in.	3/8 in.	different	1/2 in.	equal

X Series versus the P and Z at 18,000 BTU/h
Item	X Series	P Series	Difference vs P	Z Series	Difference vs Z
SEER	20	16	+4	21	−1
EER	12.5	9	+3.5	12.5	equal
HSPF	10	9	+1	10.5	−0.5
Rated heating at 8.3 °C	19,800 BTU/h	19,000 BTU/h	+800 BTU/h	19,000 BTU/h	+800 BTU/h
Max. heating at 8.3 °C	23,498 BTU/h	23,498 BTU/h	equal	24,566 BTU/h	−1,068 BTU/h
Heats down to	−20 °C	−20 °C	equal	−30 °C	limit 10 °C higher
Indoor sound at lowest	35 dB(A)	35 dB(A)	equal	26 dB(A)	+9 dB(A)
Outdoor sound	55 dB(A)	56 dB(A)	−1 dB(A)	59 dB(A)	−4 dB(A)
Outdoor unit weight	114 lb	96 lb	+18 lb	141 lb	−27 lb
Refrigerant vapour line	5/8 in.	1/2 in.	different	5/8 in.	equal

X Series versus the P at 24,000 BTU/h
Item	X Series	P Series	Difference vs P
SEER	20	16	+4
EER	12.5	9.75	+2.75
HSPF	10	9	+1
Rated heating at 8.3 °C	23,000 BTU/h	23,000 BTU/h	equal
Max. heating at 8.3 °C	30,708 BTU/h	26,000 BTU/h	+4,708 BTU/h
Heats down to	−20 °C	−20 °C	equal
Indoor sound at lowest	36 dB(A)	36 dB(A)	equal
Outdoor sound	59 dB(A)	59 dB(A)	equal
Outdoor unit weight	142 lb	confirmed in the quote	—
Refrigerant vapour line	5/8 in.	5/8 in.	equal

The difference reads “X Series minus the other series”; in green, the X’s advantage, in brown, the other series’. The three-series comparison is on the YORK wall units page.

AirGreen × YORK

The X Series, designed by YORK, installed by AirGreen.

AirGreen picks the size and voltage with you, checks the circuit and installs both units.

What YORK brings

22 to 23 SEER on 115 VAt 9,000 and 12,000 BTU/h.
Sturdy buildHeavy-gauge steel frame and corrosion-resistant coating, according to YORK.
Defrost as neededOnly when needed, according to YORK.

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: an X Series at the right size and voltage, installed by AirGreen.

See the six models Book my free estimate

The YORK shop · X Series

All 6 X Series units, right below.

One listing per model, with its indoor and outdoor model numbers and its AHRI number.

Everything to know · X Series

03 · Features

What YORK builds into the X.

Heavy gauge steel frame

A feature YORK lists only for the X among its wall units.

Corrosion-resistant coating

Per YORK’s X Series features.

Defrost as needed

According to YORK, the X defrosts only when needed.

Quiet operation

From 43 to 48 dB(A) at the highest speed, 26 to 36 dB(A) at the lowest, depending on the model.

DRCPX and Wi-Fi by adapter

DRCPX remote supplied; CS532AH adapter for the EWPE Smart app.

The same indoor unit in multi-zone

The 208/230 V X indoor units also serve as wall heads on YORK’s W Series multi-zone.

04 · 115 V

On 115 V, our most efficient YORK wall unit.

Two sizes, 9,000 and 12,000 BTU/h, in both voltages: what moving to 115 V changes.

X Series on 115 V and 208/230 V
Size	SEER (115 V · 230 V)	Heating at 8.3 °C (115 V · 230 V)	MCA / MOCP (115 V · 230 V)	Outdoor unit (115 V · 230 V)
9,000 BTU/h	23 · 23	9,900 · 11,000 BTU/h	12 / 20 A · 9 / 15 A	33 × 21 × 12.5 · 33 × 21 × 13 in.
12,000 BTU/h	22 · 22	12,200 · 13,000 BTU/h	15 / 25 A · 9 / 15 A	33 × 21 × 12.5 · 33 × 21 × 13 in.

On 115 V the X keeps 23 SEER at 9,000 BTU/h and 22 SEER at 12,000 BTU/h, as on 208/230 V; the P on 115 V is rated 16.
The circuit changes: 12 A / 20 A and 15 A / 25 A (MCA / MOCP) on 115 V, versus 9 A / 15 A on 208/230 V.

Frequently asked questions

What people ask us about the X Series.

Why choose the X on 115 V?

Because it is rated 23 SEER (9,000 BTU/h) and 22 SEER (12,000 BTU/h) there, versus 16 for the P Series at the same voltage. The required circuit is 12 A or 15 A (MCA).

What is the largest X?

The DHX24: 22,000 BTU/h of cooling and 23,000 BTU/h of rated heating, 20 SEER, with a 39 × 31 × 17 in., 142 lb outdoor unit.

How cold does the X heat?

Down to −20 °C (−4 °F), like the P Series. Only the Z Series goes down to −30 °C.

Does the X Series qualify for LogisVert?

Not our listings: none of the 6 AHRI numbers on our X Series listings is on Hydro-Québec’s October 26, 2026 list. So we promise no amount.

X or Z at 12,000 BTU/h?

Same rated heating (13,000 BTU/h). The Z is rated 23 SEER versus 22, goes down to 23 dB(A) versus 29 and heats down to −30 °C versus −20 °C; the X also comes in 115 V.

AirGreen · Air conditioning & heating

Your X Series, on 115 V or 208/230 V, installed by AirGreen.

At the free visit, we choose the size, look at your electrical panel for the voltage, and check the line-set route.

Book my free estimate 514 316-2973

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.

YORK X Series wall-mounted heat pump: our most efficient YORK wall unit on 115 V, from 9,000 to 24,000 BTU/h

The X versus the P, size by size, in SEER.

The six X Series models, on 115 V and 208/230 V.

The X between the P and the Z, in figures.