ZEPHYRCentral heat pumpZEPHYR central units at AirGreenSold and installed by AirGreen across Montreal, Laval, Longueuil, the South Shore and the North Shore.

Mon. to Thu. 8 a.m. to 6 p.m. · Fri. 8 a.m. to 4 p.m.

ZEPHYR central heat pump · updated October 9, 2026

Zephyr central heat pump: down to -30 °C, from 2 to 5 tons.

The R-454B Zephyr series 6 central heat pump (ZE-6xxHPA + AH-6xxA air handler) heats down to -30 °C per its manual, is ENERGY STAR cold-climate certified, meets the “Most Efficient” criteria and qualifies for $2,448 to $4,440 in LogisVert. It connects to your ducts.

R-454B · A2LDown to -30 °CBuilt-in leak sensorUp to $4,440 LogisVert

Book my free estimate Pick a tonnage

Central R-454B

2 tons$2,448

3 tons$3,840

4 tons$4,392

5 tons$4,440

Up to $4,440

LogisVert amount of each pair, checked by AHRI number.

ENERGY STAR (Oct. 8, 2026); Hydro-Québec LogisVert tool (Oct. 6, 2026).

7Zephyr central product pages in our catalogue

-30 °Cheating per the manual

$4,440LogisVert, 5 tons

4published Zephyr central projects

AirGreen × ZEPHYRCentral heat pumpR-454B · A2LSold and installed by AirGreenMontreal · Laval · Longueuil · South Shore · North Shore

01 · The tonnage

2, 3, 4 or 5 tons: tap to compare.

One ton equals 12,000 BTU/h. Each tonnage is a certified pair: the ZE-6xxHPA outdoor unit and the AH-6xxA air handler. The drawing compares certified heat at three temperatures with certified cooling (red mark).

$3,840

ENERGY STAR certified heat

8.3 °C32,000 BTU/h100% of certified cooling

-8.3 °C32,000 BTU/h100% of certified cooling

-15 °C31,000 BTU/h97% of certified cooling

HeatCertified coolingScale: 0 to 58,000 BTU/h

SEER2 / HSPF219.5 / 10.5

COP at -15 °C2.15

LogisVert$3,840

Units (out. + in.)ZE-636HPA + AH-636A

AHRI215381146

Certified cooling32,000 BTU/h

See the product

R-410APrevious generation, on quoteThree R-410A Zephyr central units remain in our shop. TTI publishes no sheet for these model numbers: we confirm every figure on the quote.

Did you know?

32,000 BTU/hat -8.3 °C (3 tons)

The 3-ton (ZE-636HPA + AH-636A) keeps 32,000 BTU/h at -8.3 °C, as much as at +8.3 °C, per ENERGY STAR.Source: ENERGY STAR, AHRI 215381146.

02 · ENERGY STAR

Certified figures, pair by pair.

All four Zephyr pairs are cold-climate certified and meet the “Most Efficient” criteria. The same outdoor unit is also certified with DC cased coils (Aspen, per TTI), at lower ratings.

	2 tonsZE-624HPA	3 tonsZE-636HPA	4 tonsZE-648HPA	5 tonsZE-660HPA
Zephyr pair: outdoor unit and air handler of the same tonnage
AHRI	215381145	215381146	215381147	215381148
Certified cooling	24,000	32,000	48,000	57,000
SEER2	20	19.5	19	19
EER2	12	11.7	12	11
HSPF2	10	10.5	9	9
Heat at +8.3 / -8.3 / -15 °C	24,000 / 20,400 / 20,800	32,000 / 32,000 / 31,000	48,000 / 36,600 / 37,000	57,000 / 37,000 / 42,000
COP at -15 °C	2.3	2.15	2.52	2.46
LogisVert	$2,448	$3,840	$4,392	$4,440
Status	Cold climate · Most Efficient criteria	Cold climate · Most Efficient criteria	Cold climate · Most Efficient criteria	Cold climate · Most Efficient criteria
Pair with DC cased coil (Aspen, per TTI; “Ultra-Coil” series)
Coil / AHRI	DC31D2J / 218160013	DC37D3J / 218160014	DC49B3J / 218160015	DC61C4J / 218160016
SEER2 / HSPF2	16 / 8.2	16.5 / 8.2	16.5 / 8.3	16.4 / 8.2
Heat at -8.3 / -15 °C	17,000 / 21,000	26,000 / 27,000	33,000 / 34,000	34,000 / 38,000
COP at -15 °C	1.95	1.8	1.9	2

Swipe the table.

ENERGY STAR w7cv-9xjt, Oct. 8, 2026. Each Zephyr pair also has a second AHRI number (215434507 to 215434510, air handler entered as “AH- 6xxA”) with the same SEER2 and HSPF2. The cased coil pair has been on the market since March 6, 2026 and certified since May 1, 2026, without meeting the “Most Efficient” criteria.

3 and 5 tons: ENERGY STAR certifies them at 32,000 and 57,000 BTU/h of cooling, not 36,000 and 60,000. We always give you the certified figure.

Did you know?

10.5HSPF2 (3 tons)

The 3-ton has the series’ highest HSPF2, 10.5; the 2-ton, the best SEER2, 20.Source: ENERGY STAR w7cv-9xjt.

03 · LogisVert

From $2,448 to $4,440 per Zephyr pair.

Tap a pair to see Hydro-Québec’s math: heat at -8 °C times $120 per 1,000 BTU/h. Then enter your installation date.

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

What LogisVert excludes

An air handler or ducts installed outside the insulated envelope, for example in the attic.
Replacing a single coil, or a single indoor or outdoor unit.
A central unit in a home with a geothermal system.

5 tons · ZE-660HPA

$4,440

ZE-660HPA + AH-660A

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

CertificationENERGY STAR cold climate

Math37 × $120 = $4,440

AHRI number215381148

See the product

Installation date

Apply no later than
July 8, 2027

Source: Hydro-Québec, residential LogisVert participation guide v1.10 (Sept. 15, 2026) and eligible heat pump search tool (Oct. 6, 2026). ENERGY STAR required since Nov. 26, 2025; outdoor unit of at least 12,000 BTU/h; capped at 100% of the cost before taxes; apply no later than 9 months after installation; paid by mail 10 to 12 weeks after a complete application. Indicative amounts: Hydro-Québec sets them when you apply. Our LogisVert guide

Did you know?

$4,440LogisVert, 5 tons

The 5-ton qualifies for $4,440: 37,000 BTU/h at -8 °C, so 37 × $120 per 1,000 BTU/h, the highest amount of any Zephyr unit in our shop.Source: Hydro-Québec, LogisVert tool (Oct. 6, 2026), AHRI 215381148.

04 · How it works

A central heat pump, from the outdoor unit to the vents.

The same system heats in winter and cools in summer, by moving heat instead of making it. Pick a mode: the air and refrigerant follow the path.

Red: warm air and hot refrigerant. Dashes move in the direction of the air.

1Outside. The refrigerant picks up heat from the outdoor air, even in cold weather: the ZE-6xxHPA heats down to -30 °C per its manual.

2Compressor. It compresses the refrigerant, which raises its temperature. On series 6, it is variable-speed per ENERGY STAR.

3Air handler. The AH-6xxA coil gives the heat to the house air; in deep cold, optional electric auxiliary heat can add to it.

4Ducts. The blower pushes warm air through the ducts; the house air comes back to the air handler through the return.

Did you know?

300,000heat pumps shipped in 2021

Per Natural Resources Canada, 300,000 heat pumps were shipped to Canada in 2021, 20% more than gas furnaces.Source: Natural Resources Canada, “Electric heat pumps” page (modified Dec. 3, 2025).

05 · Efficiency

At -15 °C, more than 2 kWh of heat per kWh.

The four Zephyr pairs keep a COP of 2.15 to 2.52 at -15 °C per ENERGY STAR. An electric furnace stays at 1. The rate panel gives the electricity prices that matter for an electrically heated home.

Each bar starts from 1 kWh of electricity. Each segment = 1 kWh of heat delivered (the COP).

2 tonsZE-624HPA×2.3

3 tonsZE-636HPA×2.15

4 tonsZE-648HPA×2.52

5 tonsZE-660HPA×2.46

Electric furnaceresistance×1

COP at -15 °C (5 °F), ENERGY STAR; resistance: 100% (US DOE).

Electricity price per kWh, since April 1, 2026

Rate D, first 40 kWh a day7.065¢

Rate D, beyond11.142¢

Flex D, winter, off-peak (first tier)4.886¢

Flex D, during a peak event46.463¢

DT, above -12 or -15 °C5.131¢

DT, below -12 or -15 °C30.001¢

Hydro-Québec, 2026 rate grid. Flex D events: 6 to 10 a.m. or 4 to 8 p.m., from December 1 to March 31, at most 120 hours per winter. Rate DT is for dual-energy systems; a central heat pump can be the electric side.

Did you know?

2.52COP at -15 °C (4 tons)

The 4-ton has the series’ best COP at -15 °C: 2.52, so 2.52 kWh of heat for each kWh of electricity.Source: ENERGY STAR, AHRI 215381147.

06 · Dual energy

Rate DT, degree by degree.

Hydro-Québec’s Rate DT is for dual-energy systems: a main electric source, such as a central heat pump, and a backup fuel (natural gas, oil, propane or pellets) that must be able to heat the home in deep cold. With a fuel-burning furnace, the ZE-6xxHPA pairs with a cased coil, at lower ratings; the LogisVert amount of these pairs has not been verified. Slide the temperature.

-10 °C

Region with a -12 °C threshold

5.131¢/kWh

Above the threshold: low electricity price.

Region with a -15 °C threshold

5.131¢/kWh

Above the threshold: low electricity price.

Rate DT, Hydro-Québec grid as of April 1, 2026: 5.131¢/kWh above -12 or -15 °C depending on the region, 30.001¢/kWh below. For comparison, Rate D is 7.065 then 11.142¢/kWh. Hydro-Québec’s page does not say which regions use -12 or -15 °C: we check it for your address.

Good to know: in Quebec, oil appliances have not been allowed in existing homes since December 31, 2023 (see “Replacing a furnace”).

Did you know?

×5.8the price below the threshold

On Rate DT, a kWh used below the temperature threshold costs 30.001¢, 5.8 times the price above it (5.131¢).Source: Hydro-Québec, grid as of April 1, 2026; AirGreen math (30.001 ÷ 5.131).

06 · Replacing a furnace

Oil and combustion: what the rules say.

A central heat pump connects to the existing ducts, with the Zephyr air handler or, if you keep your furnace, a cased coil. Before replacing a heating appliance, here are the rules that apply in Quebec.

Your home

Our starting point

Central heat pump

It connects to the duct system, with the Zephyr AH-6xxA air handler or, if you keep your furnace, a cased coil. From 2 to 5 tons.

See: Central heat pump

A starting point, not a rule: we confirm during the visit based on the rooms, the insulation and the existing ducts.

The rules

Since December 31, 2023, it has been prohibited to install an oil appliance in an existing home, or to replace one with a fossil-fuel appliance, gas or propane included.
In Montreal, combustion heating appliances are banned in new buildings (small buildings: October 1, 2024; others: April 1, 2025).
The Chauffez vert program has not accepted applications since March 31, 2026.
Per the RBQ, subclass 15.10 covers forced-air heating-cooling appliances if the contractor also holds 15.1, 15.1.1, 15.7 or 15.8: AirGreen holds 15.8, 15.10 and 16.

Did you know?

$100per year, oil system (Laval)

In Laval, an annual tax of $100 applies to each oil heating system, and $50 to each oil-electric dual-energy system still installed in a dwelling.Source: City of Laval, by-law L-12964 (codified Jan. 19, 2026).

08 · Two generations

R-410A or R-454B: what changed.

Our shop keeps three R-410A Zephyr central units, on quote. Series 6 moved to R-454B: a lower-GWP, class A2L refrigerant, hence the leak sensor in the air handler.

	R-410Aprevious generation	R-454Bseries 6
Models	ZE-24HPA, ZE-36HPA, ZE-60HPA (shop)	ZE-624HPA … ZE-660HPA + AH-6xxA
Refrigerant (GWP)	R-410A (2,090)	R-454B (470)
ASHRAE class	A1: non-flammable	A2L: mildly flammable
Refrigerant sensor	—	In the air handler (No. 18 in the manual)
TTI document	No sheet for these model numbers	Manuals Nos. 20 and 22
ENERGY STAR	No record found (Oct. 8, 2026)	Cold climate, 4 pairs
LogisVert	Not verified: no ENERGY STAR record found for these numbers	$2,448 to $4,440

Swipe the table.

Sources: EPA SNAP (March 19, 2026); TTI manuals; ENERGY STAR w7cv-9xjt; LogisVert tool (Oct. 6, 2026).

Refrigerant GWP

R-410AA12,090

R-32A2L675

R-454BA2L470

EPA SNAP, March 19, 2026.

See the sensor at work: the Zephyr R-454B central page simulates a leak and details the start-up per the manual.

Did you know?

77.5%lower GWP

Series 6 R-454B has a GWP of 470, 77.5% less than the previous generation’s R-410A (2,090).Source: EPA SNAP (March 19, 2026); AirGreen math.

09 · Timeline

The Zephyr central unit and the heating rules.

Swipe left to right. In red: Zephyr; in green: rules and programs.

Dec. 31, 2021Oil: new homes
No more oil appliances in new residential buildings.
Rule
Dec. 31, 2023Oil: existing homes
No more oil installations, nor replacement by a fossil fuel.
Rule
Aug. 27, 2024Series 6 R-454B
Market date of the four pairs per ENERGY STAR.
Zephyr
Oct. 1, 2024Montreal: small new buildings
Combustion heating appliances banned in small new buildings.
Rule
Apr. 1, 2025Montreal: other new buildings
The same ban extends to other new buildings.
Rule
Nov. 26, 2025LogisVert requires ENERGY STAR
Only certified heat pumps remain eligible.
Rule
Mar. 31, 2026End of Chauffez vert
Quebec’s oil and propane conversion program no longer accepts applications.
Rule
Apr. 1, 20262026 rates
Rate D: 7.065¢ and 11.142¢ per kWh; Rate DT: 5.131¢ and 30.001¢.
Rule
Oct. 5, 20266-year legal warranty
For heat pumps bought new from that date (OPC).
Rule

Did you know?

43,124 MWrecord demand

On February 3, 2023, Quebec’s electricity demand hit a record 43,124 MW. In cold snaps, heating can account for up to 80% of a household’s electricity, per Hydro-Québec.Source: Hydro-Québec, pages on using energy during cold snaps and on peak periods (hydroquebec.com), checked Oct. 8, 2026.

AirGreen × ZEPHYR

A ZEPHYR central unit, connected to your ducts by AirGreen.

ZEPHYR supplies the outdoor unit and the air handler of the same tonnage. AirGreen checks the ducts, chooses the tonnage and backup heat with you, installs and starts up.

What ZEPHYR brings

Down to -30 °CPer the series 6 manual.
Leak sensorIn the AH-6xxA air handler.
ENERGY STARCold climate; “Most Efficient” criteria.
Variable speedCompressor listed as “Continuously variable” by ENERGY STAR.

What AirGreen brings

Sold and installed by AirGreenMontreal, Laval, Longueuil, the South Shore and the North Shore.
Free home estimateWe look at the rooms, where the units go and the line set route.
Warranty registered for youWith TTI, free of charge: serial numbers, date, photos.
RBQ 5645-9605-01Subclasses 15.8 (ventilation), 15.10 (refrigeration) and 16 (electrical).

The result: a properly sized central unit, checked ducts, a clear quote.

Pick a tonnage Book my free estimate

10 · Warranty and installation

What is written, and what the law says.

TTI does not publish a warranty term for the series 6 central unit online; we put it on your quote. For a heat pump bought new on or after October 5, 2026, the law adds a 6-year warranty of good working order, counted from delivery.

Manufacturer warranty

On the quote

TTI does not publish a warranty term for this product online (checked Oct. 8, 2026). We write it down on your quote.

Legal warranty

6 years

For a heat pump or air conditioner bought new from a merchant on or after October 5, 2026, Quebec law adds a free, automatic 6-year warranty of good working order, counted from delivery (Office de la protection du consommateur). Under TTI’s parts policy (v3.4, July 17, 2026), labour to replace a part during that period falls on the installing contractor.

Certified technician

Service or repair by anyone not certified and authorized by TTI (or Kinghome) ends the manufacturer’s conventional warranty (TTI, s. 4.4).

Through your installer

If something breaks, you call the contractor who installed it; they file the claim with TTI.

Filters, every month

TTI’s policy asks owners to clean the indoor unit filters at least once a month (s. 6.3).

1Free visit

We look at the rooms, where the units go and the line set route.

2Clear quote

The exact model, the AHRI number, the indicative LogisVert amount when it applies.

3Installation and start-up

Vacuum, refrigerant charge, heating and cooling tests.

4Warranty registered

We register the units with TTI for you: nameplate, serial numbers, invoice.

11 · Our projects

Our Zephyr central projects.

Each blog post shows one installation: the unit, the place, how it was done.

Aug. 9, 2026 · in FrenchInstallation d’une thermopompe centrale Zephyr à Rosemont–La Petite-Patrie

Mar. 29, 2026 · in FrenchInstallation d’une thermopompe centrale Zephyr à Chomedey, Laval

Jan. 12, 2026 · in FrenchInstallation d’une Zephyr thermopompe centrale à Villeray–Saint-Michel–Parc-Extension

Nov. 27, 2025 · in FrenchInstallation d’une Zephyr thermopompe centrale à Villeray–Saint-Michel–Parc-Extension

All our projects

12 · Frequently asked questions

What people ask us about Zephyr central units.

We calculate it during the visit, based on the home and the ducts. One ton equals 12,000 BTU/h. The Zephyr pairs go from 2 to 5 tons.

AirGreen × ZEPHYRCentral heat pumpR-454B · A2LSold and installed by AirGreenMontreal · Laval · Longueuil · South Shore · North Shore

AirGreen · Heating and cooling

Your Zephyr central unit, on your ducts, installed by AirGreen.

We come and see the ducts, choose the tonnage and backup with you, and hand 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 commitment

Checked figuresTTI sheets, ENERGY STAR, Hydro-Québec

Showroom1370 Joliot-Curie St., Unit 712, Boucherville

Sources checked October 6 to 9, 2026

ENERGY STAR, Certified Air-Source Heat Pumps (dataset w7cv-9xjt, updated Oct. 8, 2026), checked Oct. 8, 2026: SEER2, EER2, HSPF2, capacities at 47, 17 and 5 °F, COP at 5 °F, cold-climate status, market date, by AHRI number.
TTI, “Zephyr R454b 6 series centrale” (No. 20) and “Zephyr AH-6__A” (No. 22) manuals, readable parts, checked Oct. 8, 2026: operating range, subcooling, leak detection.
TTI, “Case coil Aspen avec Zephyr centrale” (No. 19) and Aspen DC coil brochure (No. 35), tticlimatisation.com/manuels, checked Oct. 8, 2026; ENERGY STAR, AHRI 218160013 to 218160016 (“Ultra-Coil” series).
Hydro-Québec, residential LogisVert participation guide, version 1.10, Sept. 15, 2026 (2026G448F), and eligible heat pump search tool, checked Oct. 6, 2026.
Hydro-Québec, electricity rate grid as of April 1, 2026 (2026G028-2F), and Rate D, Flex D and DT pages, checked Oct. 8, 2026.
TTI, parts availability policy, version 3.4, July 17, 2026 (ss. 4.3, 4.4 and 6.3: labour during the legal warranty, certified and authorized technician, filter cleaning).
US EPA, SNAP, “Substitutes in Residential and Light Commercial Air Conditioning and Heat Pumps”, updated March 19, 2026 (GWP and ASHRAE classes); ASHRAE refrigerant designations (R-454B = R-32/R-1234yf 68.9/31.1) and Addendum g to Standard 34-2016 (class 2L).
Regulation respecting oil-fired heating appliances, Gazette officielle du Québec, Part 2, April 21, 2021 (ss. 5 to 7); Québec.ca, Chauffez vert (updated March 31, 2026); City of Montreal, ban on combustion appliances in new buildings (Sept. 12, 2025).
City of Laval, by-law L-12964, codified Jan. 19, 2026 (annual tax on oil and oil-electric dual-energy systems).
Régie du bâtiment du Québec, licence subclasses 15.8, 15.10 and 16, checked Oct. 8, 2026.
Hydro-Québec, pages on using energy during cold snaps and on peak periods (hydroquebec.com), checked Oct. 8, 2026.
Natural Resources Canada, “Electric heat pumps” page, modified Dec. 3, 2025.
US DOE, 10 CFR 430, Subpart B, Appendices M and M1 (SEER, HSPF, COP definitions); DOE Energy Saver, “Electric Resistance Heating”.
TTI Climatisation Chauffage, home page and FAQ (tticlimatisation.com), checked Oct. 8, 2026.
AirGreen: airgreen.ca product pages and “Nos réalisations” blog, as of Oct. 8, 2026.
Office de la protection du consommateur, warranty of good working order (opc.gouv.qc.ca) and legal warranty notice, checked Oct. 9, 2026; Order in Council 1459-2025, Gazette officielle du Québec (s. 79.21 of the regulation under the Consumer Protection Act, in force Oct. 5, 2026): air conditioner and heat pump, 6 years.
Hydro-Québec, residential LogisVert program page and fraud prevention page (hydroquebec.com), checked Oct. 9, 2026: no telephone or door-to-door solicitation for LogisVert.

LogisVert amounts are indicative: Hydro-Québec sets them when you apply.

Prices on quote. Free home estimate.

The ZEPHYR central shop

Zephyr central units, right below.

Each product page matches a tonnage. Prices on quote. Free home estimate.

Zephyr central heat pump: down to -30 °C, from 2 to 5 tons.

2, 3, 4 or 5 tons: tap to compare.

R-410A central · 2 tons

R-410A central · 3 tons

R-410A central · 5 tons

Certified figures, pair by pair.

From $2,448 to $4,440 per Zephyr pair.

A central heat pump, from the outdoor unit to the vents.

At -15 °C, more than 2 kWh of heat per kWh.

Rate DT, degree by degree.

Oil and combustion: what the rules say.

R-410A or R-454B: what changed.

The Zephyr central unit and the heating rules.