YSK if you're looking to buy a smart thermostat, led light bulbs, or other energy saving products to check your electricity provider's website. They might have rebates on products that could save you a lot of money.
from /r/YouShouldKnow
如果你想買一個智能恆溫器,LED燈泡,或其他節能產品,請查看你的電力供應商的網站,YSK。他們可能有產品的回扣,可以爲你節省很多錢。