Zephyr 5-zone heat pump: five rooms, one outdoor unit.
For 5 rooms, we offer 2 Zephyr systems: the compressor sold as 42,000 BTU, on R-454B or R-410A, both ENERGY STAR cold-climate certified. We validate every indoor-unit combination with TTI before the quote.
R-454B multi-zoneAmount per system, checked for the first AHRI number of each unit.
ENERGY STAR (Oct. 8, 2026); Hydro-Québec LogisVert tool (Oct. 6, 2026).
The 5-zone systems.
Each card is a system offered for 5 rooms, with its number of indoor units, the heat at -15 °C and the LogisVert amount.
Each room gets its own indoor unit and is set separately. All connect to the same outdoor unit through their line sets. We choose the indoor unit sizes room by room, during the visit.
- Indoor units (our page)
- 5
- At -15 °C
- 36,000 BTU/h
- LogisVert
- $3,384
- Max. indoor units (TTI sheet)
- 5
- At -15 °C
- 36,000 BTU/h
- LogisVert
- $3,240 *
* R-410A: AirGreen calculation per the LogisVert guide’s rule, to be confirmed by Hydro-Québec.
The ZE-542M525 gives 48,000 BTU/h of heat at +8.3 °C, more than its 42,000 of cooling, and still 36,000 at -15 °C (AHRI 216684168).Source: ENERGY STAR w7cv-9xjt.
The units offered for 5 zones.
The ENERGY STAR certified figures of each outdoor unit, next to its number of indoor units and the LogisVert amount. Both families carry the same series name at ENERGY STAR: “Hi MULTI Xtreme”.
| Outdoor unit | Refrigerant | Indoor units | Cooling (BTU/h) | At +8.3 °C | At -8.3 °C | At -15 °C | COP at -15 °C | SEER2 | LogisVert |
|---|---|---|---|---|---|---|---|---|---|
| ZE-542M525 | R-454B | 5 (to confirm) | 42,000 | 48,000 | 28,200 | 36,000 | 1.92 | 18–22 | $3,384 |
| ZE-42M522SCO | R-410A | up to 5 | 42,000 | 42,000 | 27,000 | 36,000 | 1.84 | 19–20 | $3,240 * |
Swipe the table.
Capacities, COP and SEER2: ENERGY STAR (Oct. 8, 2026), first AHRI number of each unit; SEER2: range across the certified AHRI numbers. Indoor units: R-410A, maximum per the TTI sheet; R-454B, number shown on our page, to be confirmed with TTI (TTI only gives the 2 to 5 range for the family). R-454B LogisVert: Hydro-Québec tool (Oct. 6, 2026), first AHRI number. * R-410A: AirGreen calculation per the guide’s rule (ENERGY STAR heat at -8.3 °C × $120 per 1,000 BTU/h), to be confirmed by Hydro-Québec.
Per the TTI sheet, the ZE-42M522SCO (5 zones, R-410A) leaves the factory with 120 oz of R-410A, a pre-charge meant for 123 ft of line: the largest of the family.Source: TTI, “MULTIZONE 22 SEER” spec sheet (R-410A, undated), copy hosted on airgreen.ca, checked Oct. 8, 2026.
How much heat at -8.3 and -15 °C?
The heat certified by ENERGY STAR for each outdoor unit, at three temperatures. Tap a temperature.
ENERGY STAR publishes heat at +8.3, -8.3 and -15 °C as separate test points: on all these records, the -15 °C value exceeds the -8.3 °C one. We show them as published.
In its ENERGY STAR record (AHRI 206346134), the ZE-42M522SCO (R-410A) gives 36,000 BTU/h at -15 °C (COP of 1.84), 86% of its heat at +8.3 °C (42,000 BTU/h).Source: ENERGY STAR w7cv-9xjt (Oct. 8, 2026).
One amount per system, not per room.
Hydro-Québec calculates the aid on the installed certified combination, by AHRI number: its heat at -8 °C, times $120 per 1,000 BTU/h for an ENERGY STAR cold-climate unit. Explore each unit’s combinations below the ranking.
- ZE-42M522SCO: $3,240 (AirGreen calculation, AHRI 206346134)
AirGreen calculation per the guide’s rule (ENERGY STAR heat at -8.3 °C × $120 per 1,000 BTU/h), to be confirmed by Hydro-Québec.
ZE-542M525 · R-454B
July 8, 2027deadline passed
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
| AHRI number | SEER2 | HSPF2 | At -8.3 °C | At -15 °C | COP at -15 °C | LogisVert |
|---|---|---|---|---|---|---|
| 216684168 | 22 | 9.5 | 28,200 BTU/h | 36,000 BTU/h | 1.92 | $3,384checked, Hydro-Québec tool |
| 216684167 | 18 | 8.8 | 27,400 BTU/h | 34,000 BTU/h | 1.83 | $3,288AirGreen calculation, to confirm |
| 216684169 | 20 | 9.15 | 27,800 BTU/h | 35,000 BTU/h | 1.87 | $3,336AirGreen calculation, to confirm |
ZE-542M525 · R-454B · 3 certified combinations
| AHRI number | SEER2 | HSPF2 | At -8.3 °C | At -15 °C | COP at -15 °C | LogisVert |
|---|---|---|---|---|---|---|
| 206346134 | 20 | 8.95 | 27,000 BTU/h | 36,000 BTU/h | 1.84 | $3,240AirGreen calculation, to confirm |
| 206346135 | 19 | 8.88 | 27,600 BTU/h | 36,000 BTU/h | 1.84 | $3,312AirGreen calculation, to confirm |
ZE-42M522SCO · R-410A · 2 certified combinations
Each AHRI number is one indoor-unit combination certified by ENERGY STAR (Oct. 8, 2026). Amount: heat at -8.3 °C × $120 per 1,000 BTU/h, capped at the cost before taxes. “Checked”: number found in Hydro-Québec’s tool (Oct. 6, 2026); the others are calculations to be confirmed by Hydro-Québec.
The ZE-542M525 has 3 certified combinations, from 27,400 to 28,200 BTU/h at -8.3 °C. With AHRI 216684168, checked in Hydro-Québec’s tool, it qualifies for $3,384; the other combinations would give $3,288 and $3,336 (AirGreen calculation, to be confirmed by Hydro-Québec).Source: Hydro-Québec, LogisVert tool (Oct. 6, 2026); ENERGY STAR w7cv-9xjt; AirGreen math.
How much line set, how much noise, which breaker?
TTI’s “Zephyr 22” (R-410A) sheet details the allowed line set, pre-charge, sound, breaker and weight. Pick a unit.
Source: TTI “MULTIZONE 22 SEER” sheet (R-410A). Operating range: heating from -25 to 24 °C, cooling from -10 to 46 °C.
The ZE-42M522SCO (5 zones, R-410A) is the most powerful and the loudest of the family: 63 dB maximum outdoors, 50 A breaker.Source: TTI, “MULTIZONE 22 SEER” spec sheet (R-410A, undated), copy hosted on airgreen.ca, checked Oct. 8, 2026.
SEER2 depends on the combination installed.
Each outdoor unit has two or three AHRI numbers, one per certified combination. We put on the quote the one that matches your indoor units.
Bar: highest SEER2; yellow mark: lowest, among each unit’s AHRI numbers (ENERGY STAR, Oct. 8, 2026). Scale: 0 to 24.
COP at -15 °C (5 °F) per ENERGY STAR, first AHRI number of each unit.
Depending on the certified combination, the ZE-542M525 ranges from 18 to 22 SEER2 at ENERGY STAR; the highest is AHRI 216684168.Source: ENERGY STAR w7cv-9xjt (Oct. 8, 2026).
R-454B or R-410A? Head to head, size for size.
Both families are ENERGY STAR cold-climate certified. Pick a shop size: we line up the R-454B and the R-410A. The big difference: the refrigerant. R-454B has a GWP of 470 and class A2L; R-410A, 2,090 and A1. In Canada, both remain allowed in residential units.
ZE-542M525
42,000 BTU/h cooling
ZE-42M522SCO
42,000 BTU/h cooling
ENERGY STAR w7cv-9xjt (Oct. 8, 2026), first AHRI number of each unit; SEER2: the highest of the certified combinations. LogisVert: R-454B checked in Hydro-Québec’s tool; R-410A calculated by AirGreen, to be confirmed. Scales: 0 to 50,000 BTU/h, COP 0 to 2.5, SEER2 0 to 24.
EPA SNAP, March 19, 2026.
TTI “MULTIZONE 22 SEER” sheet. Scale: 0 to 125 oz.
R-454B’s GWP (470) is 77.5% lower than R-410A’s (2,090).Source: EPA SNAP (March 19, 2026); AirGreen math.
Zephyr multi-zones, date by date.
Swipe left to right. In red: Zephyr; in green: rules and programs.
- “Zephyr 22” multi-zone
Market date of the R-410A family per ENERGY STAR.
Zephyr - R-454B multi-zone
Market date of the four R-454B units.
Zephyr - ENERGY STAR certified
Certification of the ZE-518M225, ZE-527M325 and ZE-536M425.
Zephyr - LogisVert requires ENERGY STAR
Only certified heat pumps remain eligible.
Rule - ZE-542M525
ENERGY STAR certification of the 5-zone R-454B.
Zephyr - Multilogements bonus
$220 per 1,000 BTU/h at -8 °C for a ductless cold-climate unit in an eligible building.
Rule - 6-year legal warranty
For heat pumps bought new from that date (OPC).
Rule
All eight Zephyr multi-zone outdoor units, R-454B and R-410A, are ENERGY STAR cold-climate certified and meet the “Most Efficient” criteria.Source: ENERGY STAR w7cv-9xjt.
A ZEPHYR multi-zone, planned room by room.
ZEPHYR supplies the outdoor unit and the indoor units. AirGreen chooses the combination with you, validates it with TTI, routes the line sets and installs.
What ZEPHYR brings
- 2 to 5 indoor unitsOn a single outdoor unit, per TTI.
- ENERGY STAR cold climateAll eight outdoor units.
- R-454B or R-410ATwo families, the same “Hi MULTI Xtreme” series.
- A TTI brandIn Longueuil, since 2005.
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 single unit outside, the right comfort in every room, a clear quote.
What is written, and what the law says.
The R-410A sheet announces 10 years on parts. 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.
on parts per TTI’s “MULTIZONE 22 SEER” sheet (R-410A). For the R-454B family, TTI does not yet publish a sheet: we put the warranty on the quote.
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.
Service or repair by anyone not certified and authorized by TTI (or Kinghome) ends the manufacturer’s conventional warranty (TTI, s. 4.4).
If something breaks, you call the contractor who installed it; they file the claim with TTI.
TTI’s policy asks owners to clean the indoor unit filters at least once a month (s. 6.3).
We look at the rooms, where the units go and the line set route.
The exact model, the AHRI number, the indicative LogisVert amount when it applies.
Vacuum, refrigerant charge, heating and cooling tests.
We register the units with TTI for you: nameplate, serial numbers, invoice.
Our Zephyr installations.
Each blog post shows one installation: the unit, the place, how it was done.
What people ask us about Zephyr multi-zones.
No question matches. Call us at 514-316-2973.
The model made for 5 zones is the ZE-542M525 (R-454B, 5 units per our page, to be confirmed with TTI; $3,384 of LogisVert) or the ZE-42M522SCO (R-410A, up to 5 units per the TTI sheet).
A multi-zone keeps a single unit outside; wall units are independent, each with its own outdoor unit. For LogisVert, the guide speaks of the complete system in each dwelling: before counting several wall units in one dwelling, we check with Hydro-Québec. We compare both options during the visit.
No, per system: Hydro-Québec takes the outdoor unit’s heat at -8 °C, for the AHRI number of the installed combination. Example: $1,380 for the ZE-518M225 (AHRI 216684161), $3,384 for the ZE-542M525 (AHRI 216684168).
For the R-410A “Zephyr 22”, the TTI sheet says up to 2 (ZE-18M222SCO), 3 (ZE-24M322SCO), 4 (ZE-36M422SCO) or 5 (ZE-42M522SCO). For the R-454B family, TTI gives the 2 to 5 range; our pages show 2 (ZE-518M225), 3 (ZE-527M325), 4 (ZE-536M425) and 5 (ZE-542M525), to be confirmed with TTI for your project.
TTI’s “Zephyr 22” (R-410A) sheet says -25 °C. For the R-454B family, TTI does not yet publish a minimum temperature; ENERGY STAR certifies its heat at -15 °C (for example 36,000 BTU/h for the ZE-542M525).
For the “Zephyr 22” (R-410A): up to 82 ft per unit (2 zones) or 66 ft (3 to 5 zones), and 164 to 262 ft in total. For R-454B, we get the limits from TTI for your project.
The R-410A sheet announces 10 years on parts; for R-454B, we put the warranty on the quote. For a heat pump bought new on or after October 5, 2026, Quebec law adds a 6-year warranty of good working order, counted from delivery.
ENERGY STAR lists every Zephyr multi-zone as “not connected”, and TTI publishes no Wi-Fi option.
Nine months after installation. Hydro-Québec pays by mail, 10 to 12 weeks after a complete application.
Your Zephyr multi-zone, room by room, installed by AirGreen.
We come and see the rooms, choose the outdoor unit and indoor units, validate the combination with TTI and hand you a clear quote.
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.
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 Multi Zone R454b” page (tticlimatisation.com), checked Oct. 8, 2026.
- TTI, “MULTIZONE 22 SEER” spec sheet (R-410A, undated), copy hosted on airgreen.ca, checked Oct. 8, 2026.
- Hydro-Québec, residential LogisVert participation guide, version 1.10, Sept. 15, 2026 (2026G448F), and eligible heat pump search tool, checked Oct. 6, 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).
- Ozone-depleting Substances and Halocarbon Alternatives Regulations (SOR/2016-137), Schedule 1.1, current to Apr. 28, 2026.
- 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: R-454B checked in Hydro-Québec’s tool for the first AHRI number; R-410A and other combinations calculated by AirGreen, to be confirmed by Hydro-Québec.
The 5-zone systems, right below.
Each product page matches an outdoor unit and a number of zones. Prices on quote.
