I have an indirect hot water tank that is connected to my oil-fired
boiler. With heating oil currently selling at $1.10 per litre and
with a summer EF rating of 0.60, oil is now 1.6 times more expensive
than electric resistance.
Although the easiest and least costly option would be to install a
conventional electric tank, I've always considered a Nyle heat pump
water heater a better alternative. Unfortunately, I lack sufficient
space in my laundry room for another full size storage tank (it's not
CSA/UL approved for what I have now), an external heat pump and all
the related plumbing. That said, a fully integrated product such as
this GE design could fit if I remove the storage cabinet that sits
next to the washer and dryer.
http://www.geconsumerproducts.com/pressroom/press_releases/appliances/energy_efficient_products/doetanklesshybrid.htm
The video link can be found here:
http://www.geappliances.com/video_launcher.htm?emcid 44&empidI23&packageid