Insulate Attic in House Hack?

[Art Maydan]

The duplex I’m house hacking has an uninsulated attic. It would cost me about $800 to do it myself. And the attic studs are non-standard distances apart, so I’m not even sure I could do it properly myself. I’m going to live here for another 1-2 years tops and will rent the whole thing out when we move on. I’m wondering if it’s worth my time and money to do if the tenant pays utilities. About how much money over the course of 1-2 winters will attic insulation save? I just got my first gas bill and it was for $120.

The only long-term argument I see is less ware and tear on the furnace. I already sealed up all of the cracks with that spray foam stuff. Are there more cheap options I’m missing?

What would you do?