How to remedy situations like loss of electricity or heat?

[Brendan L.]

Novice landlord who just took on my first set of tenants. The electric company shut off the electricity after the previous tenant had left and so new tenants had no electricity and no heat moving in yesterday. Legally, I have to provide heat. They weren't happy but were able to move in and find other accommodations. I offered for them to take 23% off next months rent to refund the 2 days without utilities and pay for a hotel room (that they didn't end up needing). This made them happy, but now I'm wondering how to not over extend my kindness, because I'm a naturally appeasing person. I'm also living next to these people in a duplex. 

If/when the heat goes out in the winter, what are my obligations besides calling for a technician to come out (who might not be able to make it over for a couple days)? All I can find is that I have to repair, but there don't seem to be requirements about refunding or even providing space heaters during the time that its down. Are tenants on their own if something breaks down?