answer:“So apparently when it gets cold enough, they will set the heat downstairs at 70 and that’s what it stays at all winter.” Apparently? Did you actually talk to your landlord about it and express that you would like to be able to request that he turn on the heat when you think your son is too cold? You might find that he is more understanding than you expect. Or, you might suggest paying more so that you can compromise on the temperature of the building. Or, you might try living with it for a while. You will likely find that your definition of “a comfortable temperature” shifts. I know that I am far more comfortable living in a cold space than I was when I was younger and didn’t care who was paying the heating bill. As to your actual rights as a tenant, we can all tell you what our rights are in our respective provinces/states, but you are more likely to get a relevant answer by checking with whatever rental board covers the area that you live in.