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Sharp ZU1: the Sharp wall unit we’ve installed the most.
725 ZU1 installs published on our blog since 2023, more than any other series. Four sizes, from 12,000 to 24,000 BTU/h, all ENERGY STAR certified and on the LogisVert list: from $1,740 to $2,688. It heats down to -27°C according to Sharp. We install it in Montreal, Laval, Longueuil, the South Shore and the North Shore.
The ZU1 against the CU, according to ENERGY STAR
Maximum heating output per unit, at the size shown, according to ENERGY STAR (17°F and 5°F), data of Oct. 8, 2026. For this series we only show these two certified points. The rank in brackets is the rank at -8°C.
ZU1 or CU of the same size: sometimes the numbers are identical.
According to ENERGY STAR, the ZU1 15,000 and the CU 15,000 deliver exactly the same heat at -8°C and -15°C. Same for the ZU1 24,000 and the CU 24,000. What separates them: the CU is the current series and heats down to -30°C from 15,000 up, the ZU1 down to -27°C.
Heat in BTU/h according to ENERGY STAR (Oct. 8, 2026); LogisVert according to Hydro-Québec (Oct. 6, 2026); limits according to Sharp.
Four sizes, all eligible for LogisVert.
Pick a size. Heat at -8°C and -15°C according to ENERGY STAR; Sharp states heating down to -27°C.
Maximum heat by outdoor temperature
14,500 BTU/h × 120 $ / 1 000Heat at -8°C, Hydro-Québec tool, Oct. 6, 2026
Maximum heat by outdoor temperature
18,100 BTU/h × 120 $ / 1 000Heat at -8°C, Hydro-Québec tool, Oct. 6, 2026
Maximum heat by outdoor temperature
22,000 BTU/h × 120 $ / 1 000Heat at -8°C, Hydro-Québec tool, Oct. 6, 2026
Maximum heat by outdoor temperature
22,400 BTU/h × 120 $ / 1 000Heat at -8°C, Hydro-Québec tool, Oct. 6, 2026
Sources: Sharp submittal sheets (-20°C to -30°C), ENERGY STAR (-8°C and -15°C, SEER2, HSPF2, COP), Hydro-Québec LogisVert tool (Oct. 6, 2026).
What ENERGY STAR measured, and what Sharp states lower down.
At -15°C, from 12,000 BTU/h (ZU1 12,000) to 19,000 (ZU1 24,000). Below -15°C, Sharp states heating down to -27°C without publishing the details.
Sharp states heating down to -27°C; detailed figures not published below -15°C. Maximum heat at -8°C and -15°C: ENERGY STAR, Oct. 8, 2026.
ZU1 units installed by our crews, filmed on site.
Three short clips shot during our installations.
725 published ZU1 installations.
Each article presents one installation: the unit, the neighbourhood, how it was done.
By series named in the article
Articles published on our blog as of October 6, 2026. These are published articles, not a count of jobs.
At -15°C, more than double the electricity, given back as heat.
1 kWh of electricity at -15°C: how much heat?
Electric baseboards: 1 kWh of heat for 1 kWh of electricity · ENERGY STAR cold-climate bar: 1.75
Coefficient of performance (COP) at -15°C according to ENERGY STAR. An electric baseboard turns all its electricity into heat, no more: its COP is 1. For cold-climate certification, ENERGY STAR requires at least 1.75 at this temperature.
The ZU1, between the ZU and the CU.
Same R-32 refrigerant as the ZU, but ENERGY STAR certified in all four sizes. The CU adds heating down to -30°C from 15,000 up.
- TU · THUR-410A · not ENERGY STAR
- ZU · ZHUR-32 · ENERGY STAR: the ZHU 18,000 only
- ZU1 · ZHU1R-32 · ENERGY STAR, except the ZHU1 18,000This page
- CHU · CU · FilterSweep · AirestR-32 · current series
Its current equivalent: CU. LogisVert: $1,800 to $2,688. Heats down to -30°C from 15,000 up (the 12,000: -27°C).
Its current equivalent: CHU. LogisVert: $2,268 or $2,712. Heats down to -30°C.
Its current equivalent: ZU1 or CU. LogisVert: ZU1: $1,740 to $2,688 · CU: $1,800 to $2,688. Heats down to ZU1: -27°C · CU: -30°C from 15,000 up.
Its current equivalent: ZHU1 or CHU. LogisVert: ZHU1 12,000: $2,268 · CHU: $2,268 or $2,712. Heats down to ZHU1: -27°C · CHU: -30°C.
Its current equivalent: CU. LogisVert: $1,800 to $2,688. Heats down to -30°C from 15,000 up (the 12,000: -27°C).
Its current equivalent: CHU. LogisVert: $2,268 or $2,712. Heats down to -30°C.
Release years aren’t shown: Sharp doesn’t publish them in the documents we checked.
What the ZU1 has built in.
According to Sharp’s ZU, ZHU and BU manual.
Sources: Sharp product page, Sharp manuals (OM_CU_CHU, OM_ZU_ZHU_BU), read Oct. 6 and 8, 2026.
How Sharp describes its ions
A small electrical discharge produces positive and negative ions surrounded by water molecules.
On a surface, these ions combine into OH radicals.
According to Sharp, these radicals remove hydrogen from surface proteins, which reduces their activity.
ZU1 or CU: what the current series adds.
The CU is Sharp’s current series. Green marks the better value on each line; below -15°C, figures are shown for the CU only.
ZU1 12,000
CU 12,000
ZU1 18,000
CU 18,000
ZU1 24,000
CU 24,000Sources: Sharp submittal sheets, ENERGY STAR (Oct. 8, 2026), Hydro-Québec LogisVert tool (Oct. 6, 2026), Sharp manuals.
Tap a card to flip it.
Japanese engineering, a local team.
Sharp designed the ZU1; our crews have installed enough of them to know every detail, from the wall bracket to commissioning.
What SHARP brings
- Down to -27°CAccording to Sharp.
- ENERGY STAR, all four sizesCertified as of October 8, 2026.
- Plasmacluster and self-cleaningIons released in all modes; a 90-minute cycle that dries the inside.
- R-32 refrigerantThe one in Sharp’s current series, according to ENERGY STAR.
What AirGreen brings
- SHARP Platinum dealerOn Sharp’s official dealer list for Quebec.
- Free home estimateWe look at the room, the wall and the outdoor location.
- Full commissioningAnd SHARP AIR app setup at installation.
- RBQ 5645-9605-01Subcategories 15.8, 15.10 and 16.
The result: the right ZU1 size, installed by a crew that knows it by heart.
From $1,740 to $2,688 for a ZU1, checked with Hydro-Québec.
We looked up every AHRI number on our product pages in Hydro-Québec’s tool on October 6, 2026. Every Sharp on the list is rated cold climate: $120 per 1,000 BTU/h of heat at -8°C.
| Sharp system | AHRI | Heat at -8°C | LogisVert |
|---|---|---|---|
| ZU1 24,000AE-X24ZU1 + AY-XP24ZU1 | 213246054 | 22,400 BTU/h | $2,688 |
| ZU1 18,000AE-X18ZU1 + AY-XP18ZU1 | 213246053 | 22,000 BTU/h | $2,640 |
| ZU1 15,000AE-X15ZU1 + AY-XP15ZU1 | 213239134 | 18,100 BTU/h | $2,172 |
| ZU1 12,000AE-X12ZU1 + AY-XP12ZU1 | 213194987 | 14,500 BTU/h | $1,740 |
Since November 26, 2025, only an ENERGY STAR certified system is eligible.
The outdoor unit must have a rated capacity of at least 12,000 BTU/h.
The grant never exceeds 100% of the pre-tax cost.
Deadline to apply: 9 months after installation (LogisVert guide, version 1.10).
22,000 BTU/h at -8°C × $120 per 1,000 BTU/h = $2,640
AHRI 213246053
For a cold-climate heat pump on Hydro-Québec’s list. Indicative amount: Hydro-Québec confirms it when it reviews your application, which must be filed no later than 9 months after installation.
Indicative amounts: Hydro-Québec confirms the grant when you apply. The multi-unit building bonus only applies to certain eligible buildings and is not included here.
The Sharp warranty, as Sharp writes it.
Sharp consumer limited warranty (U.S. and Canada), Airest and ZU / ZHU / BU manuals, read Oct. 6, 2026. Warrantor: Sharp Corporation.
Good to know
- The years count from the installation date.
- Keep your proof of purchase and installation date: Sharp asks for them.
- Filters, accessories and cosmetic parts are not covered.
- A unit moved from its original installation site loses the warranty.

SHARP Platinum dealer: what it means for you.
725 published installs. The next one could be at your place. AirGreen is on Sharp’s official dealer list for Quebec.
Access to the CHU, CU, FilterSweep, Airest, ZU1 and ZHU1 series and to Sharp multi-zone systems.
Installation, Wi-Fi setup with the SHARP AIR app, Plasmacluster ion settings, diagnostics and repairs.
Professional vacuum pull, refrigerant parameters validated, performance checked for winter.
Sharp parts through Sharp’s Canadian distributor; after-sales service in Montreal, Laval, Longueuil, the North Shore, the South Shore and Montérégie.
We look at the room, the wall and the outdoor location.
Series, size, colour, and the indicative LogisVert amount with its AHRI number.
Full commissioning and SHARP AIR app setup.
We stay your contact for the Sharp warranty and maintenance.
What people ask us about the ZU1.
No question matches. Call us at 514 316-2973.
Yes, still in the catalogue in 12,000, 15,000, 18,000 and 24,000 BTU/h, ENERGY STAR certified in all four sizes. Sharp’s current series in these sizes is the CU.
Down to -27°C, according to Sharp. At -15°C, ENERGY STAR lists 12,000 BTU/h (ZU1 12,000) to 19,000 BTU/h (ZU1 24,000).
The CU 15,000, 18,000 and 24,000 heat down to -30°C according to Sharp, against -27°C for the ZU1. At -8°C, the CU 12,000 delivers 15,000 BTU/h and the ZU1 12,000, 14,500 (ENERGY STAR).
According to Hydro-Québec’s tool, checked on October 6, 2026: $1,740 (12,000), $2,172 (15,000), $2,640 (18,000) and $2,688 (24,000).
In its manual, Sharp warrants the compressor for 7 years and other parts for 6 years, from installation. Keep your proof of purchase and installation date: Sharp asks for them.
The current CHU, CU, FilterSweep and Airest series have a built-in Wi-Fi adapter, according to Sharp. For previous generations, we check it at the free visit.
Our blog has 725 published ZU1 installation articles since 2023. These are published articles, not a count of jobs.
At -8°C and -15°C, yes: 18,100 and 15,300 BTU/h for both, according to ENERGY STAR, and the same LogisVert, $2,172. The difference: the CU heats down to -30°C according to Sharp, the ZU1 down to -27°C.
The ZU1 24,000: $2,688, according to Hydro-Québec’s tool, checked October 6, 2026. Then the 18,000 ($2,640), the 15,000 ($2,172) and the 12,000 ($1,740).

Your ZU1, chosen for your room, installed by AirGreen.
One free visit, one size, a LogisVert amount written with its AHRI number. Montreal, Laval, Longueuil, South Shore, North Shore.
Hydro-Québec never solicits anyone by phone or door to door for LogisVert. A call “from Hydro-Québec” selling a heat pump? Hang up.
Sources checked on October 6 and 8, 2026
- ENERGY STAR, Certified Air-Source Heat Pumps, dataset w7cv-9xjt, queried by AHRI number on Oct. 8, 2026 (heat at 17°F and 5°F, SEER2, EER2, HSPF2, COP).
- Sharp owner’s manuals OM_CU_CHU, OM_CPU and OM_ZU_ZHU_BU (limited warranty, Plasmacluster ions, After Care and self-cleaning).
- Sharp, Plasmacluster pages (global.sharp/pci): mechanism, cited tests and Sharp’s caveats; checked Oct. 6, 2026.
- Hydro-Québec, LogisVert residential participation guide, version 1.10, Sept. 15, 2026.
- Hydro-Québec, eligible heat pump search tool (search by AHRI number), checked Oct. 6, 2026.
- ENERGY STAR heat pump criteria, Version 6.2 (rev. February 2026): cold climate, COP of at least 1.75 at 5°F (-15°C).
- Sharp, corporate outline and chronology (global.sharp), read Oct. 8, 2026.
- AirGreen × SHARP page (airgreen.ca): Sharp installs by city as of Oct. 6, 2026, job-site videos, Canadian distributor.
- AirGreen, installations blog, articles published as of Oct. 6, 2026; airgreen.ca product pages, Oct. 8, 2026.
LogisVert amounts are indicative: Hydro-Québec confirms them when you apply.
Our ZU1 wall heat pumps, right below.
All four sizes, with their full product page and AHRI number.




