Yes, lack of insulation is definitely a problem for me. I currently have no insulation (including the attic because of a rat problem that was there before I mo

Yes, lack of insulation is definitely a problem for me. I currently have no insulation (including the attic because of a rat problem that was there before I moved in). I do have wireless temperature sensors in various rooms to try to figure out how my house reacts to various weather, and I'm not sure how much adding insulation will actually help me, vs the cost of injecting insulation into the walls, etc. I'm probably going to get attic insulation before summer next year though, but to be honest, the temperature didn't get too crazy this year, despite several days of 90-100 degree weather, so I'm a bit skeptical.