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GIANT FACTORIES · MONTRÉAL-EST · SINCE 1945The GIANT space at AirGreenGIANT electric water heaters, manufacturer specs checked, price on quotation in Montréal, Laval, Longueuil, the South Shore and the North Shore.
ECOPEAK technology
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GIANT · electric water heaters · updated October 14, 2026

GIANT electric water heaters: a Montréal-Est manufacturer since 1945

Giant has been based in Montréal-Est since 1945 and has made water heaters there since 1957; the company has been part of the A. O. Smith group since 2021. At AirGreen: the Expert Plus 40, the Expert Plus ECOPEAK® 60, with three elements, and the Standard 60. Every figure on this page comes from a Giant document, from Hydro-Québec or from an official text, with its date.

Compare the three modelsRequest an estimate
  • 1945founded in Montréal-Est
  • 3 elementsECOPEAK: 3,800, 3,000 and 800 W
  • 60 °Cfactory setting, Canadian models
  • 2 peaks6-10 a.m. and 4-8 p.m. (Hydro-Québec)
AirGreenGIANT logo
water connections 3,800 WTop 3,000 WMiddle 800 WBottom
ECOPEAK®3 elements

According to Hydro-Québec, this split helps lower the collective demand for electricity during the 6-10 a.m. and 4-8 p.m. peaks.

Source: Hydro-Québec, “ECOPEAK® water heater” page, read Oct. 14, 2026.
AirGreen × GIANTA Montréal-Est manufacturer since 1945ECOPEAK®: 3 elements3,800 · 3,000 · 800 WPeaks from 6 to 10 a.m. and 4 to 8 p.m.Water stored at 60 °CPrice on quotationMontréal · Laval · Longueuil · South Shore · North Shore
01The models

Three GIANT water heaters, sheet by sheet

Pick a model, then the unit you think in: litres, imperial gallons or US gallons. The values are those of the Giant sheet that carries the model’s code.

Show capacity in
Manufacturer’s sheet

Expert Plus 40

Expert Plus line, sold to professionals only according to Giant

184 Lcapacity (Giant sheet)
3,800 Winput, 240 V
22 × 49¼ indiameter × height
140 lbestimated shipping weight

Standby heat loss, compared with the federal cap

Giant: 62 WFederal cap for 184 L: 71.8 W
  • Model code152STE-3S8M-E8AA
  • Capacity184 L · 41 imp gal · 49 US gal
  • Giant warranty8 years tank · 8 years parts
  • Labournot covered by Giant

Giant sheet GI-FT-RES-ELECT-STE-EXPERT-PLUS-6-8-EN-0426 (April 2026), row 152STE-3S8M-E8AA.

See the product page

Federal cap: Energy Efficiency Regulations (SOR/2016-311), household electric water heaters, top-inlet formula, the stricter of the two (35 + 0.2 × volume up to 270 L; 0.472 × volume − 38.5 above). Text current to June 17, 2026.

02ECOPEAK and Hydro-Québec

Three elements for the morning and evening peaks

Giant launched ECOPEAK® technology in 2010 with Hydro-Québec. Here is what Hydro-Québec says about it on its own site.

The two peak periods Hydro-Québec names

According to Hydro-Québec, ECOPEAK helps lower the collective demand for electricity during these two periods.

Peak 6-10 a.m. Peak 4-8 p.m. 12 a.m.3 a.m.6 a.m.9 a.m.12 p.m.3 p.m.6 p.m.9 p.m.12 a.m. One day, midnight to midnight
40 → 60 gal

Replacing a 40-gallon tank

Hydro-Québec says a 60-gallon ECOPEAK can replace a 40-gallon water heater without changing the electrical supply, if there is room for a larger tank.

Hydro-Québec, ECOPEAK page

60 °C

The recommended temperature

Hydro-Québec advises keeping the water heater at 60 °C and choosing a three-element ECOPEAK.

Hydro-Québec, hot water tips

≈ 12 years

The estimated service life

Hydro-Québec estimates an ECOPEAK lasts about 12 years from the date on its nameplate.

Hydro-Québec, hot water tips

AirGreen × GIANT

A Montréal-Est manufacturer, a local team.

Giant has been based in Montréal-Est since 1945 and has made water heaters there since 1957. AirGreen presents its models with checked specs and gives you a price on quotation.

GIANT

What GIANT brings

  • Since 1945Founded in Montréal-Est by the Lesage family; part of the A. O. Smith group since 2021.
  • Three-element ECOPEAK®3,800, 3,000 and 800 W, launched in 2010 with Hydro-Québec.
  • 8 years + 8 yearsTank and parts on the Expert Plus 40, according to Giant’s April 2026 sheet.
  • CSA 22.2 and NRCanStandards printed on the Expert Plus sheet.
AirGreen

What AirGreen brings

  • Free estimateEach model’s price is given on quotation.
  • Checked specsEvery figure on this page comes from a dated document.
  • Showroom1370 Joliot-Curie Street, Suite 712, Boucherville.
  • RBQ 5645-9605-01Subclasses 15.8, 15.10 and 16.

In short: compare the GIANT models, then request your quotation.

Compare the modelsRequest an estimate
03Warranty and rules

Giant’s warranty and what the Code says

The conditions come from Giant’s limited warranty certificate; each model’s own term is shown in the section 01 tool.

Giant limited warranty certificate (residential)

  • Tank: 6 years in a family dwellingThe shorter of 6 years after installation or 90 months after manufacture; 1 year for any other use.
  • Parts: 1 year from installationSome Expert Plus sheets state longer terms depending on the model (section 01).
  • Labour: not coveredDiagnosis, service, removal and installation are paid by the owner.
  • Registration card within 45 daysOtherwise the warranty counts from the date of manufacture.
  • Written notice within 30 daysFrom the discovery of the defect; the warranty is not transferable.
  • Anode checked at least every 2 yearsDamage from removing the anode or from an unchecked anode is not covered; a replacement anode that does not meet CSA-C309 voids the warranty.

Québec Plumbing Code

  • Stored water at 60 °C or moreArt. 2.6.1.12: the setting must not let the tank water fall below 60 °C.
  • 49 °C or less at the shower and bathArt. 2.2.10.7: 43 °C or less in care facilities and private seniors’ residences.
  • In force since July 11, 2024Régie du bâtiment du Québec, explanatory booklet on the plumbing changes (November 2024).
Not covered

LogisVert

Hydro-Québec’s list of LogisVert measures does not include water heaters (checked Oct. 14, 2026).

Not eligible

ENERGY STAR

Natural Resources Canada says electric storage water heaters are not eligible for ENERGY STAR.

04The manufacturer

Giant, a Montréal-Est manufacturer

What Giant and its owner publish about the company.

1945

Founded in Montréal-Est

Founded by Lucien and Jean Lesage as Giant Electric Manufacturing; renamed Usines GIANT Factories inc. in 1982.

Giant, “About” (modified Apr. 8, 2025)

2021

Part of the A. O. Smith group

A. O. Smith announced the purchase of Giant on October 19, 2021: two plants in Montréal, more than 300 employees.

A. O. Smith, release filed with the SEC

CSA 22.2

Standards on the sheet

The Expert Plus sheet says the unit meets CSA 22.2 construction standards and meets or exceeds NRCan efficiency standards.

Giant, Expert Plus sheet (April 2026)

Expert Plus 40Product page at AirGreenExpert Plus ECOPEAK® 60Product page at AirGreenStandard 60Product page at AirGreen
05FAQ

Questions about GIANT water heaters

12 questions

Three electric models: the Expert Plus 40 (152STE-3S8M-E8AA), the Expert Plus ECOPEAK® 60 (172STPS-3S8M-E8) and the Standard 60 (172STE-3F7M). Pricing is on quotation.

AirGreen × GIANTA Montréal-Est manufacturer since 1945ECOPEAK®: 3 elements3,800 · 3,000 · 800 WPeaks from 6 to 10 a.m. and 4 to 8 p.m.Water stored at 60 °CPrice on quotationMontréal · Laval · Longueuil · South Shore · North Shore
AirGreen

A GIANT water heater? Let’s talk.

Tell us which model you are looking at and what you have today (capacity, available space). Pricing is on quotation.

Request an estimateCall (514) 316-2973
  • Phone(514) 316-2973
  • RBQ5645-9605-01 · subclasses 15.8, 15.10 and 16
  • Showroom1370 Joliot-Curie Street, Suite 712, Boucherville
  • HoursMon to Thu 8 a.m. to 6 p.m. · Fri 8 a.m. to 4 p.m.
06Sources

Where the figures come from

Documents read on October 14, 2026.

Price on quotationFree estimate. The GIANT water heaters AirGreen offers are below.

The GIANT shop

GIANT water heaters, right below.

Open each model’s product page. Price on quotation.

GIANT