Hotel & Hospitality

Lake Louise Inn

Alberta, Canada

Lake Louise Inn (LLI) is a 200 room resort nestled within the breathtaking Rocky Mountains in Banff National Park, part of a UNESCO World Heritage Site.  

Utilizing a PIRANHA T10 to collect the hot wastewater discharge from their laundry systems, they reduced their energy demands by as much as 85%

Their PIRANHA T10 wastewater heat recovery system intercepts laundry room wastewater, extracts heat from it and uses that heat to offset the energy required by the hotel to heat water throughout the premises. 

By recovering heat from wastewater, Lake Louise Inn significantly reduced their reliance on fossil fuel heating and gained substantial Carbon & energy savings.

Product PIRANHA T10
Commissioned September 2018
Developer -
Architect -

"Our PIRANHA works great and is reliable, I’ve definitely noticed how much less our boilers run because of the reduced load. We love showing our Guests that we take actionable steps towards green energy."

Sylvain, Director of Maintenance, Lake Louise Inn

Quick Facts

  • Lake Louise Inn’s laundry room is propane heated
  • PIRANHA significantly reduced load & runtime of boilers
  • CO2 reduction of 43 tonnes per year
  • Typical Co-efficient of Performance (CoP) of 5
  • 28,000 Litres propane saved per year
  • 375 kWH/day heat generated
  • Lowers LLI’s carbon emissions by over 80 tonnes (~17 cars off the road.)

Results from 2 week audited trial (2018)

  • Ran an average of 10.7 hours per day
  • PIRANHA recovered 375kWh of heat per day (1.28 million BTU) the equivalent of heating nearly 6500 liters (1700 US gallons) of water from 10 to 60°C (50 – 140°F)
  • PIRANHA reduced propane requirement by ~1063 liters (281 gallons) the equivalent of 1.64 tonnes of CO2 


Solution Building Size Max DHW Temp DHW Load Energy Reduction CO2e Emission Reduction Average Efficiency (CoP)
PIRANHA T10 200 Rooms 140°F / 60°C 50% 1644 MWh/year 43 tonnes/year CoP = 5

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