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Added to comparison 
ZEPHYRAir handler and electric backupThe ZEPHYR air handler and electric backup at AirGreenSold and installed by AirGreen across Montreal, Laval, Longueuil, the South Shore and the North Shore.
The whole ZEPHYR spaceMon. to Thu. 8 a.m. to 6 p.m. · Fri. 8 a.m. to 4 p.m.
ZEPHYR series 6 air handler and electric backup · updated October 9, 2026
The AH-6xxA air handler: the indoor heart of a ZEPHYR central system.
An electric furnace heats with resistance elements: 1 kWh of electricity gives 1 kWh of heat. TTI publishes no Zephyr furnace: the brand’s indoor unit is the AH-6xxA air handler, paired with the ZE-6xxHPA central heat pump, with optional electric auxiliary heat for deep cold. Here is how they compare, in numbers.
Resistance: 100%AH-6xxA air handlerOptional auxiliary heatZephyr pair: up to $4,440
Central R-454BFor 100 kWh of heat at -15 °C
Electricity needed: resistance (100%) against a Zephyr central heat pump (ENERGY STAR COP at -15 °C). AirGreen math.
ENERGY STAR (Oct. 8, 2026); Hydro-Québec LogisVert tool (Oct. 6, 2026).
4Zephyr AH-6xxA air handlers, 2 to 5 tons
1kWh of heat per kWh (resistance)
2.52top COP of a Zephyr central unit at -15 °C (4 tons)
80%of a household’s electricity can go to heating in cold snaps (Hydro-Québec)
AirGreen × ZEPHYRAir handler and electric backupR-454B · A2LSold and installed by AirGreenMontreal · Laval · Longueuil · South Shore · North Shore
01 · The math
Resistance or heat pump: how much electricity?
Slide the amount of heat to deliver. We compare an electric furnace (100%, so 1 kWh for 1 kWh) with two Zephyr central units at -15 °C, per their ENERGY STAR COP.
Heat to deliver in deep cold (-15 °C)
1,000 kWh
Electric furnace or baseboard1,000 kWh$111.42resistance, 100%
ZE-636HPA + AH-636A465 kWh$51.81COP 2.15 at -15 °C
ZE-648HPA + AH-648A397 kWh$44.23COP 2.52 at -15 °C
Illustrative math: electricity = heat ÷ COP. Resistance: 100% (US DOE). COP at -15 °C per ENERGY STAR. Cost at Rate D second tier (11.142¢/kWh, beyond 40 kWh per day), before taxes and access fees.
Did you know?
50%less electricity
Per the US DOE, resistance heat is 100% efficient, but a heat pump easily cuts electricity use by 50% compared with it.Source: US DOE Energy Saver, “Electric Resistance Heating”.
02 · The Zephyr air handler
The AH-6xxA air handler, part by part.
The air handler pushes air into the ducts, holds the heat pump’s evaporator and can take electric auxiliary heat. Tap the numbers.
Tap a number
Item 1 · Supply air outlet flange
Numbers from the Zephyr “AH-6__A” manual (p. 12), which lists 18; the knock-outs (Nos. 9 and 10) and the air outlet (No. 11) are not shown here. Simplified drawing. The air filter is not factory installed.
AH-624AZephyr air handler, paired with the ZE-624HPA
- AHRI
- 215381145
- LogisVert
- $2,448 (pair)
AH-636AZephyr air handler, paired with the ZE-636HPA
- AHRI
- 215381146
- LogisVert
- $3,840 (pair)
AH-648AZephyr air handler, paired with the ZE-648HPA
- AHRI
- 215381147
- LogisVert
- $4,392 (pair)
AH-660AZephyr air handler, paired with the ZE-660HPA
- AHRI
- 215381148
- LogisVert
- $4,440 (pair)
Did you know?
18components in the manual
The Zephyr AH-6xxA manual numbers 18 components on its drawing (p. 12); we show 12, grouped. The optional auxiliary heat is No. 13 and the refrigerant detection sensor, No. 18.Source: TTI, “Zephyr AH-6__A” manual (No. 22), p. 12: components numbered 1 to 18; p. 9: refrigerant detection.
03 · A2L safety
Simulate a leak in the air handler.
With R-454B, an A2L refrigerant, the AH-6xxA air handler has a detection system. Tap “Leak detected”.
FanRunning
CompressorRunning
The refrigerant detection sensor (No. 18 in the manual) watches for leaks in the air handler. The indoor unit must stay powered, except for service.
Did you know?
Poweredexcept for service
The Zephyr manual asks that the indoor unit stay powered, except for service, so that refrigerant detection stays active.Source: TTI, “Zephyr AH-6__A” manual (No. 22), p. 12: components numbered 1 to 18; p. 9: refrigerant detection.
04 · Backup heat
Electric elements, in stages.
Natural Resources Canada describes backup for an air-source heat pump as resistance elements in the ducts or baseboards, switched on in stages as the outdoor temperature drops. Per its sizing guide, no backup is needed if the heat pump covers the design load at the design temperature.
Heat kits for the Zephyr R-410A air handler
| Kit | Power | 24K | 36K | 48K / 60K |
|---|---|---|---|---|
| 21-4245-01 | 5 kW | ✓ | ✓ | ✓ |
| 21-4245-02 | 7.5 kW | ✓ | ✓ | ✓ |
| 21-4245-03 | 10 kW | ✓ | ✓ | ✓ |
| 21-4245-04 | 15 kW | — | ✓ * | ✓ * |
| 21-4245-05 | 20 kW | — | — | ✓ * |
* Two supply circuits. Table from the Zephyr R-410A generation air handler manual (AH-24, AH-36, AH-60, version 2169400, B). The current AH-6xxA air handler has its own selection table (manual, p. 19): we choose the kit with you and put it on the quote.
Good to know
- The AH-6xxA air handler provides for “auxiliary heat (optional)”; its manual contains an electric kit selection table.
- On the R-410A air handler, the 15 and 20 kW kits needed two supply circuits: we check the electrical panel during the visit.
- Forced-air electric systems generally range from 10 to 50 kW, per NRCan (2003).
Did you know?
20 kWthe largest kit
On the R-410A generation Zephyr air handler, the largest kit, the 21-4245-05, was 20 kW, for the 48K and 60K only, on two circuits.Source: TTI, Zephyr R-410A air handler installation manual (version 2169400, B), electric heat kit table.
05 · LogisVert
The aid comes from the heat pump, not the furnace.
LogisVert funds a complete ENERGY STAR central heat pump, with its indoor unit(s). Here are the Zephyr pairs’ amounts.
ENERGY STAR cold climate: $120 / 1,000 BTU/hENERGY STAR standard: $50 / 1,000 BTU/h
Furnace alone?
- The LogisVert guide v1.10 has no measure for an electric furnace or air handler alone.
- Replacing a single indoor unit is excluded.
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
Apply no later than
July 8, 2027deadline passed
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.
Keeping an existing furnace? The ZE-6xxHPA then pairs with a DC cased coil (Aspen, per TTI; AHRI 218160013 to 218160016), certified at lower ratings: 16 to 16.5 SEER2 and 8.2 to 8.3 HSPF2, without meeting the “Most Efficient” criteria. The LogisVert amount of these pairs has not been verified; we confirm it on the quote.
Did you know?
$0Chauffez vert, since April 2026
The Chauffez vert program, which helped convert oil or propane heating, has not accepted applications since March 31, 2026.Source: Québec.ca, Chauffez vert, updated March 31, 2026.
06 · Hydro-Québec rates
What a kWh costs, by rate and time.
In Quebec, an electrically heated home is mostly billed at Rate D. Rate Flex D charges more during winter peak events; Rate DT is for dual energy.
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.
In deep cold
- Heating can account for up to 80% of a household’s electricity (Hydro-Québec).
- Quebec uses nearly twice as much electricity in winter as in summer (Hydro-Québec).
- The Winter Credit Option has not accepted new customers since March 31, 2026.
Did you know?
46.463¢per kWh at peak (Flex D)
On Rate Flex D, a kWh used during a peak event costs 46.463¢, against 4.886¢ for the first off-peak tier in winter.Source: Hydro-Québec, electricity rate grid as of April 1, 2026 (2026G028-2F), and Rate D, Flex D and DT pages, checked Oct. 8, 2026.
07 · Replacing a furnace
Oil and combustion: what the rules say.
Before changing heating appliances, here are the rules that apply in Quebec and a starting point for choosing.
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 pumpA 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.
- Since December 31, 2023, it has been prohibited to repair an oil boiler or warm-air furnace over 20 years old; routine maintenance is still allowed.
- In Montreal, combustion heating appliances are banned in new buildings (small buildings: October 1, 2024; others: April 1, 2025).
Did you know?
20 yearsage limit for repairs
An oil boiler or warm-air furnace over 20 years old has not been repairable in Quebec since December 31, 2023 (an oil water heater: over 10 years).Source: Regulation respecting oil-fired heating appliances, s. 7 (Gazette officielle du Québec, April 21, 2021).
08 · Timeline
Heating with electricity in Quebec, in dates.
Swipe left to right.
- NRCan: heating with electricity
Per NRCan, resistance is “typically 100 per cent efficient”.
Reference - Oil: replacement banned
Neither oil nor fossil fuel to replace an oil appliance.
Rule - Zephyr series 6 central
ZE-6xxHPA + AH-6xxA on the market.
Zephyr - End of Chauffez vert and Winter Credit
For new applications and new customers.
Rule - 2026 rates
Rate D: 7.065¢ and 11.142¢ per kWh.
Rule - 6-year legal warranty
For heat pumps and air conditioners bought new from that date (OPC).
Rule
Did you know?
120 hof peak per winter, at most
On Rate Flex D, peak events fall between 6 and 10 a.m. or 4 and 8 p.m., from December 1 to March 31, for at most 120 hours per winter.Source: Hydro-Québec, electricity rate grid as of April 1, 2026 (2026G028-2F), and Rate D, Flex D and DT pages, checked Oct. 8, 2026.
AirGreen × ZEPHYR
The ZEPHYR air handler and backup, installed by AirGreen.
ZEPHYR supplies the air handler and the heat pump. AirGreen checks the ducts and the electrical panel, chooses the backup with you and installs.
What ZEPHYR brings
- AH-6xxA air handlerPaired with the ZE-6xxHPA heat pump.
- Leak sensorFor R-454B, an A2L refrigerant.
- Auxiliary heatOptional, per the manual.
- ENERGY STARCold-climate certified pairs.
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 well-matched electric central heating system, a clear quote.
09 · Warranty and installation
What is written, and what the law says.
TTI does not publish a warranty term online for the series 6 air handler and central unit; 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.
10 · 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
11 · Frequently asked questions
What people ask us about the air handler, backup heat and electric furnaces.
No question matches. Call us at 514-316-2973.
In its public documents (Oct. 8, 2026), TTI publishes no Zephyr electric furnace. The Zephyr product in this family is the AH-6xxA air handler, with optional electric auxiliary heat, paired with the ZE-6xxHPA central heat pump.
The furnace turns 1 kWh into 1 kWh of heat. A Zephyr central unit gives 2.15 to 2.52 kWh of heat per kWh at -15 °C per ENERGY STAR, and qualifies for LogisVert with the AH-6xxA air handler. If you keep an existing furnace, the ZE-6xxHPA pairs with a cased coil (AHRI 218160013 to 218160016), at lower ratings; the LogisVert amount of that pair has not been verified; we confirm it on the quote.
No: guide v1.10 has no measure for a furnace or air handler alone. LogisVert funds the complete central heat pump, $2,448 to $4,440 for the Zephyr pairs.
We calculate it during the visit. On the Zephyr R-410A air handler, kits ranged from 5 to 20 kW, and the 15 and 20 kW kits needed two circuits. The AH-6xxA has its own selection table.
Because R-454B is an A2L, mildly flammable refrigerant. If the sensor detects a leak, the fan must run and the compressor must stop, per the Zephyr manual.
Since December 31, 2023, it has been prohibited to replace an oil appliance with a fossil-fuel appliance. A central heat pump with electric backup is an option; Chauffez vert has not accepted applications since March 31, 2026.
On Rate D, the same price all day: 7.065¢ then 11.142¢. On Rate Flex D, 46.463¢ during winter peak events.
The AH-6xxA manual states that the air filter is not factory installed: we plan it at installation.
Nine months after installation. Hydro-Québec pays by mail, 10 to 12 weeks after a complete application. The invoice must show the RBQ licence and the AHRI or ENERGY STAR number.
TTI does not publish a warranty term online for the series 6 central unit and air handler: we put it 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.
For LogisVert, yes: installing indoor units or ducts outside the insulated envelope is not eligible. We look at the route during the visit.
AirGreen × ZEPHYRAir handler and electric backupR-454B · A2LSold and installed by AirGreenMontreal · Laval · Longueuil · South Shore · North Shore
AirGreen · Heating and cooling
Your electric central heating, well matched, installed by AirGreen.
We come and see the ducts and the panel, compare a furnace alone with a Zephyr central heat pump, 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.
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
- US DOE, 10 CFR 430, Subpart B, Appendices M and M1 (SEER, HSPF, COP definitions); DOE Energy Saver, “Electric Resistance Heating”.
- Natural Resources Canada, guide on heating and cooling with a heat pump (modified Dec. 24, 2025) and Air-Source Heat Pump Sizing and Selection Guide, version 1.0 (Dec. 21, 2020).
- Natural Resources Canada, “Heating with Electricity” (2003, M91-2/119-2003E).
- 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 AH-6__A” manual (No. 22), p. 12: components numbered 1 to 18; p. 9: refrigerant detection.
- TTI, Zephyr R-410A air handler installation manual (version 2169400, B), electric heat kit table.
- 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.
- Hydro-Québec, Winter Credit Option page, accessed Oct. 8, 2026: option not available since March 31, 2026.
- Hydro-Québec, pages on using energy during cold snaps and on peak periods (hydroquebec.com), checked Oct. 8, 2026.
- 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).
- 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).
- 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.
Illustrative math. LogisVert amounts are indicative: Hydro-Québec sets them when you apply.
Prices on quote. Free home estimate.
The air handler and backup shop
This collection’s products, right below.
The Zephyr AH-6xxA air handlers pair with the central heat pump of the same tonnage. Prices on quote.
