Any advise would be appreciated.
We moved into a 30-year-old home and this is our first winter and we've noticed that some of the rooms are colder than the others but none of the rooms are actually at our set temperature.
We set our thermostat to 72 and I've attached a picture of the layout and temperatures in each room.
The room that has the thermostat in it faces east, but I've never seen direct sunlight hit the thermostat. And that room its self never seems to make it to the set point.
We're worried that this could be an issue with our HVAC since no rooms in the house actually make it to 72, 68/70 is actually our preferred setting. Our realtor said that the HVAC was old and that we would likely need to replace it in a few years. But we're wondering if there could be another issue.
I've attempted to play around with the dampers and in doing so I can make all of the rooms upstairs warmer but the problem rooms still don't hit 68/70 and I had to set the thermostat at 74 to get most of the house around 68/70 and by doing that the master upstairs becomes horribly cold.
Could this be a damper issue and I'm just not setting them right? Or is it something else because there aren't actually any rooms that are hotter than I want them to be.
I was reading about boosters for specific rooms but I'm worried that adding them will make other rooms colder.
I was also wondering how complicated and expensive it is to move the thermostat to another colder room upstairs and if that would help.
Thank you for your time.