Fascinating! >"Heating the equivalent of 1 gallon of water from -60°F to a reasonable liquid distribution temperature (50°F) means heating it up by a whopping 110°F. That’s 268 watt-hours of raw energy required just to bring a single gallon of water up to distribution temperature! This is one of the reasons we’re restricted to two-minute showers." Everyone reading this should try to get by on a two-minute shower once…
Admittedly, Colorado "cold" is not Antarctica "cold". Just saying that 2m is plenty of time for a shower if you're not luxuriating in world of steam and shower thoughts.