[Greenbuilding] Water heater timer energy savings?

[Antonioli Dan]

There’s only so much insulation value you can get per application. I don’t have the “calories” per calculation, but insulation has its diminishing returns. 14-16” of ceiling insulation is about all you’re going to get from that application….some people think that if you keep going up into 2-3 feet that you’ll get more energy savings and it’s not true. That said I won’t want to go down an insulation rabbit hole. The post, once again, is about digital timers and integrated watt meters. If you want to start another discussion about insulation please do. 

Dan




On Apr 9, 2016, at 6:48 PM, Reuben Deumling <9watts at gmail.com> wrote:

> 
> 
> On Sat, Apr 9, 2016 at 5:12 PM, Antonioli Dan <solardan26 at gmail.com> wrote:
> Most modern hot water heaters do not need blankets as they are redundant, and redundant insulation doesn’t do much. 
> 
> Hm. 
> I'm looking forward to Rob Tom's response to that. 
> 
> As for me, I'm not so sure about that. I can well imagine that some modern water heaters are better insulated (but probably not as efficient as some older designs), but how can adding more insulation with a payback of 1 year or even five years be redundant? I can't imagine that the embodied energy in a bit of fiberglass (or recycled jeans) would tip the scales. 
> 
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