ZEPHYR · CB22 · CB25 · UB32 · SERIES 6The ZEPHYR space at AirGreenSold and installed by AirGreen across Montreal, Laval, Longueuil, the South Shore and the North Shore.

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Zephyr, a TTI brand from Longueuil · updated October 7, 2026

Zephyr in Montreal: the R-454B generation heats down to -30°C

Zephyr’s CB25 and UB32 wall units and the Series 6 central system have moved to R-454B and heat down to -30°C, according to the manufacturer. The CB22 wall unit, on R-32, goes down to -25°C. We help you choose, check the LogisVert amount in Hydro-Québec’s tool, and install throughout Greater Montreal.

Find my Zephyr Book my free estimate

Current generation

R-410A2,090

R-32675

R-454B470

Global warming potential (GWP), relative to CO₂

R-454B · GWP 470 · class A2L

At Zephyr: CB25 and UB32 wall units, R-454B multi-zones and the Series 6 central. All heat down to -30°C, except the multi-zone (minimum not published).

GWP and classes: EPA, SNAP program, table of March 19, 2026.

73Zephyr products in our catalogue

128published Zephyr projects

-30°CCB25, UB32 and Series 6 central, according to Zephyr

$4,440Highest LogisVert amount (5-ton central)

AirGreen × ZEPHYRSold and installed by AirGreenCB25, UB32 and Series 6: down to -30 °CZEPHYR warranty: 10 years on partsUB32: up to 32 SEER2Multi-zone, 2 to 5 roomsMontreal · Laval · Longueuil · South Shore · North Shore

AirGreen × ZEPHYR

A ZEPHYR heat pump, a local team.

ZEPHYR puts its name, its spec sheet and its 10-year parts warranty on the heat pump. AirGreen picks it with you, installs it and registers the warranty. Each does what it does best.

What ZEPHYR brings

Down to -30 °CCB25 and UB32 wall units and the Series 6 central system, according to ZEPHYR.
Up to 32 SEER2The UB32, the most efficient ZEPHYR, on the 9,000 BTU/h.
10 years on partsZEPHYR’s base warranty. Labour is separate.
From wall unit to centralCB22, CB25 and UB32 wall units, 2- to 5-room multi-zone, Series 6 central.

What AirGreen brings

Sold and installed by AirGreenMontreal, Laval, Longueuil, the South Shore and the North Shore.
Free home estimateWe look at the rooms, the ducts if there are any, and the line set route.
Warranty registered for youFree of charge: serial numbers, date and photos.
RBQ 5645-9605-01Subclasses 15.8, 15.10 and 16.

The result: the right ZEPHYR, chosen with you, installed by AirGreen, warranty registered.

Find my ZEPHYR Book my free estimate

01 · Which Zephyr for your home?

Three questions, one Zephyr.

Ducts or not, one room or several, what matters most to you: the answer changes the series. The LogisVert amount shown is the one in Hydro-Québec’s tool for that system.

1Does your home have air ducts?

2How many rooms to heat?

3What matters most?

Our recommendation

UB32 or CB25 · R-454B

Both heat down to -30°C, according to Zephyr.
UB32: the most efficient, from 9,000 to 15,000 BTU/h.
CB25: up to 24,000 BTU/h for large rooms.

$1,296 to $2,640LogisVert, from 12,000 to 24,000 BTU/h

-30°Cminimum heating temperature, according to Zephyr

See the Zephyr wall units See details

Compare the heat of the three series, size by size, in section 02.

02 · The three wall units

CB22, CB25 or UB32: same size, three different winters.

The number in the name is the series’ maximum SEER2. Pick a size: we line up the heat each series delivers in the cold, from the manufacturer’s spec sheet, and Hydro-Québec’s LogisVert amount.

BTU/h rated in cooling

	CB22 · R-32	CB25 · R-454B	UB32 · R-454B
Refrigerant	R-32	R-454B	R-454B
Heats down to	-25°C	-30°C	-30°C
Heat at -8.3°C	9,000 BTU/h	10,800 BTU/h	13,000 BTU/h
Heat at -15°C	7,500 BTU/h	10,600 BTU/h	12,200 BTU/h
Heat at -20°C	6,000 BTU/h	7,000 BTU/h	11,300 BTU/h
Heat at -25°C	Not published	6,100 BTU/h	9,000 BTU/h
SEER2 up to (series)	22.5	25	32
ENERGY STAR cold climate	No	Yes	Yes
Available in 115 V	Yes (DB22)	Yes (DB25)	No
LogisVert (Hydro-Québec)	On quote	$1,296	$1,560
Spec sheet	See product	See product	See product

CB22 at 12,000: not on the ENERGY STAR or Hydro-Québec lists, amount on quote.

CB22 · R-32

Heats down to -25°C. ENERGY STAR certified standard, not cold climate: LogisVert at the $50 per 1,000 BTU/h rate.

CB25 · R-454B

Heats down to -30°C, electronic expansion valve, ENERGY STAR cold climate. Also available in 115 V (DB25), on a regular outlet.

UB32 · R-454B

Zephyr’s most efficient: up to 32 SEER2 on the 9,000. Heats down to -30°C, in 9,000, 12,000 and 15,000 only.

03 · The cold

Drop the thermometer: which ones still heat?

Each Zephyr series has a minimum heating temperature published by the manufacturer. Slide down to -30°C to see which ones hold up, and how much heat a 12,000 BTU/h wall unit delivers.

Outdoor temperature

-25°C

-8.3°C-15°C-20°C-25°C-30°C

CB25 · R-454Bwall unit

-30°C

UB32 · R-454Bwall unit

-30°C

CB22 · R-32wall unit

-25°C

Series 6 centralR-454B, 2 to 5 tons

-30°C

R-454B multi-zone2 to 5 zones

Not published

Bars: from 10°C down to the minimum heating temperature published by Zephyr. Hatching: R-454B multi-zone, minimum not published by Zephyr.

At -25°C outside

CB25 · R-454B6,100 BTU/h (12,000 BTU/h)

UB32 · R-454B9,000 BTU/h (12,000 BTU/h)

CB22 · R-32Still heats

Series 6 centralStill heats

R-454B multi-zoneMinimum not published by Zephyr

4 Zephyr series still heat at this temperature. CB22: capacity at -25°C not published. 12,000 BTU/h wall units, according to the Zephyr brochures (BRO_2606).

04 · R-454B multi-zone

One unit outside, 2 to 5 rooms inside.

The Zephyr R-454B multi-zone connects CB25 wall heads to a single outdoor unit. Tell us how many rooms: here are the compressors that can serve them, with the system’s LogisVert amount.

Room 1

Room 2

18,000BTU/h

ZE-518M225 · 2 zonesUp to 2 indoor heads · 18,000 BTU/h rated · 11,500 BTU/h at -8°C

$1,380LogisVert

27,000BTU/h

ZE-527M325 · 2 zonesUp to 3 indoor heads · 27,000 BTU/h rated · 17,600 BTU/h at -8°C

$2,112LogisVert

36,000BTU/h

ZE-536M425 · 2 zonesUp to 4 indoor heads · 36,000 BTU/h rated · 22,600 BTU/h at -8°C

$2,712LogisVert

42,000BTU/h

ZE-542M525 · 2 zonesUp to 5 indoor heads · 42,000 BTU/h rated · 28,200 BTU/h at -8°C

$3,384LogisVert

Amount per system (per outdoor unit), never per head. Capacities: Hydro-Québec’s tool, Oct. 6, 2026. The size is chosen at the visit, based on your rooms. All Zephyr multi-zone systems

05 · Series 6 R-454B central

Two halves that work together in the cold.

Outside, the ZE-6xxHPA heat pump heats down to -30°C. Inside, the AH-6xxA indoor unit blows air through your ducts and can take an electric backup heat kit. Pick the size and the temperature.

Indoor unit

R-410A generation, on quote

Size

Outdoor temperature

Heat pump ZE-636HPA31,000 BTU/hENERGY STAR certified at -15°C

Electric backup (optional)up to 15 kW= 51,180 BTU/h of backup heat, optional 21-4245 kit

$3,840LogisVert (Hydro-Québec)

215381146AHRI number

3/8 and 3/4Line set (liquid, gas)

See the 3 tons central system

Same refrigerant

An R-454B heat pump pairs with an R-454B indoor unit with an expansion valve (TXV). Generations are never mixed.

Same tonnage

The manufacturer requires the same capacity inside and out. Each certified pair has its own AHRI number.

Built-in leak sensor

The R-454B indoor unit comes with a factory-installed refrigerant detection sensor, designed for this A2L refrigerant.

Backup heat is optional

Kits from 5 to 10 kW (2 tons), up to 15 kW (3 tons), up to 20 kW (4 and 5 tons), according to the Zephyr manual.

06 · R-410A, R-32, R-454B

From R-410A to R-454B: what changes for you.

Between 2024 and 2026, Zephyr moved almost its entire lineup to R-32 and R-454B. In Canada, no rule yet requires the end of R-410A in residential heat pumps. Tap a date.

Turquoise dot: Zephyr (market date according to ENERGY STAR). Yellow dot: rule or regulatory milestone.

Oct. 2026

Canada: no residential limit

The federal regulation sets GWP limits for refrigeration and chillers (750 since 2025), not for residential air conditioners and heat pumps. Quebec regulates how refrigerants are handled, not which ones are chosen.

Source: SOR/2016-137, Schedule 1.1, current to Apr. 28, 2026; Q-2, r. 29.

R-410A is still allowed

In Canada, GWP limits target refrigeration and chillers, not residential heat pumps. Your R-410A system can stay in place.

A2L: mildly flammable

R-32 and R-454B are classed A2L. Hence the leak sensor in the central indoor unit, and a trained installer.

The two halves go together

An R-454B heat pump does not go on an R-410A indoor unit. If one half fails, we check the pairing before suggesting anything.

GWP cut by more than 4

2,090 for R-410A, 470 for R-454B, according to the EPA. That is why manufacturers are switching.

07 · Our ZEPHYR Air Conditioning, Ventilation & Heating Products

73 Zephyr products, in five families.

The five collections from our previous page, with their sub-collections by series and by number of zones.

33 products

ZEPHYR Wall-Mounted Heat Pump

CB22, CB25 and UB32, from 9,000 to 24,000 BTU/h, in 115 or 220 V.

20 products

ZEPHYR Multi Zone Heat Pump

From 2 to 5 rooms on a single outdoor unit.

7 products

ZEPHYR Central Heat Pump

Series 6 R-454B from 2 to 5 tons, on your ducts.

10 products

ZEPHYR Electric Furnace

Indoor units for the central system, with electric backup heat.

3 products

ZEPHYR Wall-Mounted Air Conditioner

Cooling only, from 12,000 to 24,000 BTU/h.

By series and by number of zones

Zephyr 25 · R-454B Zephyr 23 · R-32 Zephyr 23 Zephyr 18 R-454B central 2 zones 3 zones 4 zones 5 zones

R-410A generation : Zephyr 18 and Zephyr 23 wall units, “Zephyr 22” multi-zones, “18 SEER” central systems and wall air conditioners. Availability and price on quote, no LogisVert amount shown here.

Products in our catalogue, by family

Wall units33

Multi-zones20

Central7

Furnaces6

Air handlers4

Air conditioners3

The 4 R-454B air handlers are listed with the electric furnaces in our shop.

08 · Hydro-Québec’s LogisVert

From $740 to $4,440 per Zephyr system. Checked with Hydro-Québec.

We ran each of the 39 AHRI numbers on our Zephyr product pages through Hydro-Québec’s official tool. Here are the 15 current-generation systems, on R-32 and R-454B, that are listed. Tap one to see the calculation and your claim deadline.

ENERGY STAR cold climate: $120 / 1,000 BTU/hENERGY STAR standard: $50 / 1,000 BTU/h

On quote: no LogisVert amount shown

All 9,000 BTU/h units: below the 12,000 BTU/h minimum.
CB22 12,000 and 24,000: not on the ENERGY STAR list or Hydro-Québec’s.
R-410A generation: the “Zephyr 22” multi-zones are on Hydro-Québec’s list; Zephyr 18 and 23 wall units, the “18 SEER” central and the air conditioners are not. Availability and amount on quote.

Central · 5 tons

$4,440

ZE-660HPA + AH-660A

Heat at -8°C (Hydro-Québec)37,000 BTU/h

CertificationENERGY STAR cold climate

Calculation37 × $120 = $4,440

AHRI number215381148

Installation date

File your claim no later than
July 7, 2027

Source: Hydro-Québec, LogisVert participation guide v1.10 (Sept. 15, 2026) and eligible heat pump search tool (owner, existing home), consulted Oct. 6, 2026. ENERGY STAR required since Nov. 26, 2025; outdoor unit of at least 12,000 BTU/h; grant capped at 100% of the cost before taxes; claim within 9 months. Indicative amounts, confirmed by Hydro-Québec when you apply. Our LogisVert guide

09 · Zephyr warranty

10 years on parts. Labour is separate.

Zephyr’s base warranty covers parts for 10 years. The manufacturer does not cover labour: ask your contractor.

Zephyr base warranty

10 years

on parts, according to the manufacturer’s (TTI) brochures and website, consulted Oct. 6, 2026

Parts

10 years

Labour

Not covered by the manufacturer

Functional parts in stock at TTI, otherwise an announced lead time of 2 to 6 weeks; cosmetic parts (remote, grilles, louvres) not covered, according to TTI’s parts policy (v3.4, July 17, 2026).

Certified technician

Maintenance or repair by an uncertified person voids the manufacturer’s warranty.

Through your installer

If something breaks, you call the installer, who files the claim with TTI. TTI does not repair on site.

Maintenance matters

Clean filters, clean outdoor coil, snow and debris cleared: TTI excludes failures caused by lack of maintenance.

1Free visit

We look at the rooms, the ducts if there are any, and the line set route.

2Clear quote

The series, the size, the AHRI number and the indicative LogisVert amount.

3Installation and start-up

Vacuum, refrigerant charge, heating and cooling tests.

4Warranty registered

We register the unit with TTI for you, free of charge: serial numbers, date, photos.

10 · Our Zephyr projects

128 published Zephyr projects, mostly wall units in Montreal.

Each article on our blog shows an installation: the unit, the place, the method. Rosemont, Villeray, the Plateau and the Sud-Ouest lead, then Laval. Tap a region.

Montreal

Laval

Longueuil and South Shore

West Island

North Shore

102 published projects · Montreal
Rosemont–La Petite-Patrie 33 · Villeray–Saint-Michel–Parc-Extension 17 · Le Sud-Ouest 14 · Le Plateau-Mont-Royal 11 · Ville-Marie 11…

Pin: our showroom in Boucherville.

Articles published per month, 2026

11Jan.

6Feb.

2Mar.

6Apr.

18May

17June

16July

3Aug.

8Sept.

By installation type

Wall units 118Air conditioners 5Central 4Multi-zone 1

By year

22023

12024

382025

872026

Sept. 30, 2026Wall unit in Le Plateau-Mont-Royal

Sept. 20, 2026Wall unit in Griffintown

Sept. 20, 2026Wall unit in Mercier–Hochelaga-Maisonneuve

Sept. 14, 2026Wall unit in Le Sud-Ouest

Sept. 9, 2026Wall unit in Chomedey, Laval

Sept. 3, 2026Wall unit in Le Sud-Ouest

All our projects

11 · Frequently asked questions

What people ask us about Zephyr.

Zephyr is a brand of TTI Climatisation Chauffage, a distributor based in Longueuil since 2005 that sells only to licensed contractors. TTI handles the warranty and parts in Canada.

AirGreen · Air conditioning & heating

Your Zephyr, chosen for your home and installed by AirGreen.

We come see the house, choose the series and size with you, and give you a clear quote, with the AHRI number and the indicative LogisVert amount.

Book my free estimate 514 316-2973

Hydro-Québec does not solicit anyone by phone or door to door for LogisVert. A call “from Hydro-Québec” selling a heat pump? Hang up.

RBQ 5645-9605-01Subclasses 15.8, 15.10 and 16

Free estimateAt home, no obligation

LogisVert checkedBy AHRI number, in Hydro-Québec’s tool

Showroom1370 Joliot-Curie Street, Suite 712, Boucherville

Sources checked on October 6 and 7, 2026

TTI Climatisation Chauffage (tticlimatisation.com): Zephyr CB22, CB25, UB32, R454b Central and R454b Multi Zone product pages, consulted Oct. 6, 2026.
Zephyr CB22, CB25 and UB32 brochures (BRO_2606): heating capacities, minimum temperatures, SEER2, warranty.
Zephyr manuals for the R-454B central (heat pump and AH-6xxA indoor unit, 21-4245 kits) and the R-410A central.
TTI, Parts and warranty policy, version 3.4, July 17, 2026.
ENERGY STAR, Certified Air-Source Heat Pumps, dataset w7cv-9xjt, data from Oct. 6 and 7, 2026 (AHRI numbers on the Zephyr product pages).
Hydro-Québec, LogisVert residential participation guide, version 1.10, Sept. 15, 2026.
Hydro-Québec, eligible heat pump search tool (search by AHRI number), consulted Oct. 6, 2026.
Ozone-depleting Substances and Halocarbon Alternatives Regulations (SOR/2016-137), Schedule 1.1, current to Apr. 28, 2026.
U.S. EPA: 40 CFR 84.54 and final rule of May 26, 2026 (in force July 27, 2026); SNAP program, table of March 19, 2026 (GWP and safety classes).
AirGreen, “Nos réalisations” blog, articles published as of Oct. 7, 2026, and airgreen.ca product pages.

LogisVert amounts are indicative: Hydro-Québec confirms them when you apply. Price on quote.

Price on quote. Free in-home estimate.

The ZEPHYR shop