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Eight current Sharp wall units. Only one is right for your room.
Four series, from 12,000 to 24,000 BTU/h: the CHU for deep cold, the CU for size choice, the FilterSweep for upkeep, the Airest for air. At -30°C, the CHU 18,000 still delivers 11,800 BTU/h. Tell us what matters to you, we show you the right one, then install it in Montreal, Laval, Longueuil, the South Shore or the North Shore.
What matters most to you?
CHU series
At -30°C, the CHU 18,000 delivers 11,800 BTU/h, the highest figure among current Sharp wall units. The CHU 12,000 delivers 9,700, more than the CU 18,000 (9,200).
CU 24,000 or CHU 18,000
At -8°C, the CU 24,000 delivers 22,400 BTU/h and the CHU 18,000, 22,600. At -30°C, the CHU 18,000 stays ahead: 11,800 against 10,500.
Airest
MERV 14 activated-carbon filter: 75 to 84% of particles from 0.3 to 1 micron captured, according to the Sharp manual. Heats down to -27°C. AHR Innovation 2026 award.
FilterSweep
A brush cleans the filter after each use and pushes the dust into a bin. Heats down to -30°C. Coming soon to AirGreen.
Dark grey CU or CHU
Sharp offers dark grey on the CU 15,000, the CU 18,000 and the CHU 12,000. Same performance as the white one.
CU series
The CU 12,000 and 18,000 heads also connect to the CU multi-zone (AE-X3M24CU), which heats down to -30°C. CHU units don’t go on a multi-zone.
FilterSweep or CHU 12,000
According to Hydro-Québec: $2,280 for the FilterSweep 12,000 and $2,268 for the CHU 12,000, against $1,800 for the CU 12,000 and the Airest.
According to Sharp’s spec sheets, ENERGY STAR and Hydro-Québec’s LogisVert tool (October 2026). We confirm the right model at the free estimate.
Four current series, plus the ZU1 and ZHU1, still offered.
Each card leads to its page: sizes, cold-weather heat, LogisVert, product pages.

CHU series
The most heat at -30°C for its size, motion sensor, ion indicator.
11,800 BTU/h at -30°C at 18,000, the lineup’s best.
See the CHU series
CU series
Four sizes, heads compatible with the CU multi-zone.
The 24,000 and 18,000 both do 22,400 BTU/h at -8°C; the 24,000 pulls ahead from -20°C down.
See the CU series
FilterSweep
A brush cleans the filter after each use.
A dust box to empty about twice a year.
View product
Airest
The wall unit that filters the room’s air with a MERV 14 activated-carbon filter.
AHAM-certified air cleaner, according to Sharp.
See the Airest
CHU dark grey
The CHU 12,000 with a “Dark Gray” front.
The only CHU in Dark Gray.
See the dark grey CHU
CU dark grey
The CU 15,000 and 18,000 with a “Dark Gray” front.
15,000 and 18,000 in Dark Gray.
See the dark grey CU
ZU1
The series we’ve installed the most, 12,000 to 24,000.
725 published installs: our most installed series.
See the ZU1
ZHU1
The ZHU1 12,000 delivers 18,900 BTU/h at -8°C.
18,900 BTU/h at -8°C at 12,000, like the CHU 12,000.
See the ZHU1Slide down to -30°C. See who holds on.
At -8°C, all eight are close. It’s lower down that it plays out: below -27°C, the CU 12,000 and the Airest stop, and at -30°C the CHU 18,000 keeps 52% of its -8°C heat.
Maximum heat: Sharp spec sheets (-20°C to -30°C) and ENERGY STAR (-8°C and -15°C). Montreal temperatures: MétéoMédia (2021 and 2025) and 1871-2024 records.
All eight, side by side, sorted your way.
Sort by cold-weather heat, LogisVert or size. Each line leads to its product page.
| Sharp wall unit | Heats down to | At -8°C | At -30°C | SEER2 | LogisVert |
|---|---|---|---|---|---|
| Sharp CHU 18,000AE-X18CHU + AY-XP18CHU | -30°C | 22,600 BTU/h | 11,800 BTU/h | 25.0 | $2,712 |
| Sharp CU 24,000AE-X24CU + AY-XP24CU | -30°C | 22,400 BTU/h | 10,500 BTU/h | 22.0 | $2,688 |
| Sharp CHU 12,000AE-X12CHU + AY-XP12CHU | -30°C | 18,900 BTU/h | 9,700 BTU/h | 25.0 | $2,268 |
| Sharp CU 18,000AE-X18CU + AY-XPC18CU | -30°C | 22,400 BTU/h | 9,200 BTU/h | 24.0 | $2,688 |
| Sharp CU 15,000AE-X15CU + AY-XP15CU | -30°C | 18,100 BTU/h | 8,900 BTU/h | 24.0 | $2,172 |
| Sharp FilterSweep 12,000AE-X12DWU + AY-XP12DWU | -30°C | 19,000 BTU/h | 8,000 BTU/h | 24.0 | $2,280 |
| Sharp CU 12,000AE-X12CU + AY-XPC12CU | -27°C | 15,000 BTU/h | No heat | 22.0 | $1,800 |
| Sharp Airest 12,000AE-X12CPU + AY-XP12CPU | -27°C | 15,000 BTU/h | No heat | 21.0 | $1,800 |
Sources: Sharp submittal sheets (-30°C), ENERGY STAR (-8°C, SEER2), Hydro-Québec LogisVert tool (Oct. 6, 2026). Dark grey versions have the same figures as the white ones.
White or dark grey? Put it on your wall before you choose.
Sharp offers dark grey on three models only. Pick your wall colour, then the front.
On-screen colours are a guide only: the real shade changes with the room’s lighting.
The quietest Sharp wall unit goes down to 22 dB.
That’s the CHU 12,000 at its lowest fan speed. Québec.ca puts a whisper heard from one metre at about 20 dBA.
- 22 dBCHU 12,000
- 23 dBCU 12,000 · FilterSweep
- 25 dBCHU 18,000 · CU 18,000 · CU 24,000 · Airest (cooling)
Indoor unit at its lowest fan speed, from Sharp’s spec sheets. Reference points: Québec.ca. Measurement conditions differ: compare the ballpark, not the exact decibel.
Already own a Sharp? Here’s where it fits.
The ZU1, the ZHU1 12,000 and the ZHU 18,000 are on the LogisVert list. The ZU, the ZHU 12,000, the ZHU1 18,000, the TU and the THU aren’t.
| Series | Refrigerant | Heats down to | ENERGY STAR | LogisVert | Published installs | Page |
|---|---|---|---|---|---|---|
| ZU1 | R-32 | -27°C | Yes, 4 sizes | $1,740 – $2,688 | 725 | See ZU1 |
| ZHU1 | R-32 | -27°C | 12,000 only | 12,000: $2,268 | 61 | See ZHU1 |
| ZU | R-32 | -27°C | No | On quotation | 22 (ZU and TU) | See ZU |
| ZHU | R-32 | -27°C | 18,000 only | 18,000: $2,712 | 38 | See ZHU |
| TU | R-410A | Quotation | No | On quotation | 22 (ZU and TU) | See TU |
| THU | R-410A | Quotation | No | On quotation | 7 | See THU |
Sources: ENERGY STAR and NEEP (Oct. 8, 2026), Hydro-Québec LogisVert tool (Oct. 6, 2026), AirGreen blog (Oct. 6, 2026).
- TU · THUR-410A · not ENERGY STAR
- ZU · ZHUR-32 · ENERGY STAR: the ZHU 18,000 only
- ZU1 · ZHU1R-32 · ENERGY STAR, except the ZHU1 18,000
- 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.
Before the heat pumps, there was a belt buckle and a mechanical pencil.
The first Japan-made crystal radio, the world’s first all-transistor desktop calculator, Plasmacluster, then an award for the Airest in 2026. Scroll through.
- 1912
On September 15, Tokuji Hayakawa opens a small metalworking shop in Tokyo. His first invention: the Tokubijo snap buckle.
- 1915
He invents a mechanical pencil, named the Ever-Ready Sharp in 1916. The company name comes from it.
- 1925
The first Japan-made crystal radio set.
- 1953
Mass production of the first Japan-made TV sets.
- 1964
The CS-10A, the world’s first all-transistor-diode electronic desktop calculator.
- 1973
A pocket calculator with a liquid crystal display.
- 1974
Sharp Electronics of Canada is founded.
- 2000
Plasmacluster arrives in Sharp air purifiers, in September.
- 2016
Strategic alliance with Hon Hai (Foxconn).
- 2026
The Airest wins an AHR Innovation Award, indoor air quality category.
Source: Sharp’s corporate outline and chronology (global.sharp), read October 8, 2026; AHR award: Sharp’s award page. Today, Sharp’s head office is in Osaka.
Tap a card to flip it.
Japanese engineering, a local team.
Sharp has been inventing since 1912. We handle the part that happens at your place: the right model, the right wall, an installation that holds through winter.
What SHARP brings
- Down to -30°CCHU, CU 15,000 and up, FilterSweep.
- Four current seriesCHU, CU, FilterSweep and Airest.
- In Canada since 1974Sharp Electronics of Canada.
- AHR Innovation 2026 awardThe Airest, indoor air quality category.
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 Sharp, chosen for your winter, installed by a Platinum team.
From $1,740 to $2,712 per Sharp wall unit, 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 |
|---|---|---|---|
| CHU 18,000AE-X18CHU + AY-XP18CHU | 217508925 | 22,600 BTU/h | $2,712 |
| ZHU 18,000AE-X18ZHU + AY-XP18ZHU, previous generation | 209424784 | 22,600 BTU/h | $2,712 |
| CU 18,000 · white or dark greyAE-X18CU + AY-XPC18CU (-B) | 217508915 / 217508914 | 22,400 BTU/h | $2,688 |
| CU 24,000AE-X24CU + AY-XP24CU | 217508895 | 22,400 BTU/h | $2,688 |
| ZU1 24,000AE-X24ZU1 + AY-XP24ZU1, previous generation | 213246054 | 22,400 BTU/h | $2,688 |
| ZU1 18,000AE-X18ZU1 + AY-XP18ZU1, previous generation | 213246053 | 22,000 BTU/h | $2,640 |
| FilterSweep 12,000AE-X12DWU + AY-XP12DWU | 218327264 | 19,000 BTU/h | $2,280 |
| CHU 12,000 · white or dark greyAE-X12CHU + AY-XP12CHU (-B) | 217512736 / 217512733 | 18,900 BTU/h | $2,268 |
| ZHU1 12,000AE-X12ZHU1 + AY-XP12ZHU1, previous generation | 213238803 | 18,900 BTU/h | $2,268 |
| CU 15,000 · white or dark greyAE-X15CU + AY-XP15CU (-B) | 217512734 / 217508926 | 18,100 BTU/h | $2,172 |
| ZU1 15,000AE-X15ZU1 + AY-XP15ZU1, previous generation | 213239134 | 18,100 BTU/h | $2,172 |
| CU 12,000AE-X12CU + AY-XPC12CU | 217512740 | 15,000 BTU/h | $1,800 |
| Airest 12,000AE-X12CPU + AY-XP12CPU | 216624517 | 15,000 BTU/h | $1,800 |
| ZU1 12,000AE-X12ZU1 + AY-XP12ZU1, previous generation | 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).
22,600 BTU/h at -8°C × $120 per 1,000 BTU/h = $2,712
AHRI 217508925
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.
For CHU, CU and FilterSweep, Sharp has not yet published the warranty text in its manuals (product registration announced as “coming soon”). We give you the exact terms with the quotation.
The Sharp manuals checked for this page cover the Airest and the ZU, ZHU and BU, not the TU and THU (R-410A). We give you your unit’s warranty terms with the quotation.
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.
- Warrantor: Sharp Corporation; contact in Canada: Sharp Electronics of Canada.
- Keep your proof of purchase and installation date.
- We confirm the terms in writing, before you buy.

SHARP Platinum dealer: what it means for you.
From the TU to the Airest, one point of contact. 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.
Sharp on video, and our job sites in vertical format.
Three brand videos, then six short clips shot on our job sites.
1,266 published Sharp wall-unit installations since 2023.
Each article presents one installation: the unit, the neighbourhood, how it was done. 322 Sharp articles name no series.
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.
What people ask us about Sharp wall units.
No question matches. Call us at 514 316-2973.
Yes. According to Sharp’s spec sheets, the CHU, CU (15,000 to 24,000) and FilterSweep series heat down to -30°C. The CU 12,000 and the Airest go down to -27°C, like the ZU, ZU1, ZHU and ZHU1 generations. The TU and THU (R-410A) are older.
For the most heat at -30°C: the CHU. For more sizes and multi-zone later: the CU. To filter the room’s air: the Airest. For less filter upkeep: the FilterSweep, coming soon to AirGreen. We help you decide at the free estimate.
For the same size, the CHU keeps more heat in extreme cold: at -30°C, the CHU 12,000 delivers 9,700 BTU/h, while the CU 12,000 stops at -27°C. The CHU also has a motion sensor and an ion indicator. The CU offers more sizes and its heads work on the multi-zone.
Not when it’s very cold. According to Sharp’s spec sheets, at -30°C the CHU 18,000 delivers 11,800 BTU/h and the CU 24,000, 10,500 BTU/h. At -8°C, they are almost equal.
Yes, in dark grey (“Dark Gray” at Sharp) on three models only: CU 15,000, CU 18,000 and CHU 12,000. All the others are white.
According to Hydro-Québec’s tool, checked on October 6, 2026: from $1,740 to $2,712. Several older models aren’t on the list: their amount goes in writing in your quotation. You must apply within 9 months after installation.
The current CHU, CU, FilterSweep and Airest series have a built-in Wi-Fi adapter, according to Sharp. We set up the SHARP AIR app at installation. For previous generations, we check it at the free visit.
In the Airest and ZU, ZHU and BU manuals, Sharp warrants the compressor for 7 years and other parts for 6 years, from installation. For CHU, CU and FilterSweep, we give you the exact terms with the quotation.
It’s Sharp’s ion technology: a small discharge produces ions that, according to Sharp, act on surface proteins. Sharp points out that its tests used concentrations far higher than the units produce and that results vary from room to room. On its heat pumps, Sharp makes no health claims.
A 12,000 BTU/h Sharp wall unit whose filter cleans itself: a brush passes after each use and the dust drops into a bin you empty. It heats down to -30°C. It’s coming soon to AirGreen.
Sharp names RBL A/C Inc., in Blainville, as its distributor for Canada. AirGreen is on Sharp’s official dealer list for Quebec.
Our blog has 1,266 published Sharp wall-unit installation articles since 2023, including 725 ZU1. These are published articles, not a count of jobs.
On paper, the CHU 12,000: 22 dB at its lowest fan speed, per Sharp’s spec sheet. The CU 12,000, CU 15,000 and FilterSweep follow at 23 dB. Québec.ca puts a whisper heard from one metre at about 20 dBA.

Your Sharp wall unit, chosen for your winter, installed by AirGreen.
One free visit, one model, a LogisVert amount written with its AHRI number. In Montreal, Laval, Longueuil, the South Shore and the 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
- Sharp submittal sheets: CHU and CU (January 2026), FilterSweep AY-XP12DWU (May 2026), Airest (June 2025), AE-X3M24CU multi-zone (January 2026) and its capacity table.
- 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 HVAC, CHU / CU product page (air throw, motion sensor, After Care, line lengths, finishes, sound levels), re-read Oct. 8, 2026.
- 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).
- Québec.ca, “Mesure du bruit” (20 to 60 dBA reference points), checked Oct. 8, 2026.
- MétéoMédia, January 25, 2021: -30°C or colder in Montreal, 34 times since 1941; the last on January 27, 1994 (-31.8°C).
- MétéoMédia, January 31, 2025: -29.5°C in Montreal on February 4, 2023.
- Montreal records 1871-2024 (Extreme Weather Watch): record low of -37.8°C on January 15, 1957.
- Sharp, corporate outline and chronology (global.sharp), read Oct. 8, 2026.
- AirGreen, installations blog, articles published as of Oct. 6, 2026; airgreen.ca product pages, Oct. 8, 2026.
- NEEP cold-climate heat pump list (ashp.neep.org), search by AHRI number on Oct. 8, 2026: no listing for the older ZU, ZHU 12,000, ZHU1 18,000, TU, THU and TU dual-zone models.
- Sharp HVAC North America (global.sharp/products/hvac): CHU/CU, FilterSweep and Airest pages, “Find a Dealer” list (Quebec); checked Oct. 6, 2026.
- Sharp HVAC, FilterSweep product page (dust box), read Oct. 8, 2026.
- Sharp HVAC, Airest product page (AHAM certification, 471 sq ft, design, AZ-F120CU filter, 25 dB), read Oct. 8, 2026.
- Sharp, AHR Innovation 2026 award page and “AHR Expo 2026” news item of April 16, 2026.
- Sharp, Plasmacluster “pci3000” page (launch in September 2000) and Sharp Vietnam’s Plasmacluster 20th-anniversary page (90 million units by 2020).
- AirGreen × SHARP page (airgreen.ca): Sharp installs by city as of Oct. 6, 2026, job-site videos, Canadian distributor.
LogisVert amounts are indicative: Hydro-Québec confirms them when you apply.
All our Sharp wall heat pumps, right below.
Filter by series, capacity or temperature, then compare the product pages.
