Place them in four different locations, wait 30 minutes, and read the room.It's not unusual for tenants to complain about a rental being cold, but they'll refuse to put on a sweater.

I’d Atleast make them knit sweaters or bake cookies to sell on the open market to off set the rent loss !

https://www.biggerpockets.com/forums/521/topics/1079768-ugly-sweater-holiday-re-investors-meetup-and-toy-drive

If she has forced air heat, she needs to learn how to use the heater and maybe put a sweater on.

I think most americans would rather have a high tech job making $90,000/year than working in some small sweat shop sewing sweaters for $2 a day.

Well its winter , you pay for heat , or you buy a sweater .  

Oh yeah, I WEAR A SWEATER!

Who is that and what did y'all do with the mild mannered, sweater wearing Rich Weese

In some of those areas the lead that kills is flying through the air (not the lead in the pipes) is killing people, and the crack in their pipes has a far worse effect on their lives than the drinking water.To me lead in the pipes (while not a good thing) is like putting on a sweater to warm up in a rain storm.In Newark there seems to be more pressing issues to deal with first.Good Luck!

I'm wearing a striped black and tan sweater!