2 level townhome- the upstairs is heating to 68 degree-thermostat is located but the downstairs is like 58 degrees.The vents are open in ceilings downstairs. How can we do to get more heat downstairs

if there is no control of air movement between floors and you have it on cooling then any cold air will go down to the lower floor
or alternately if you have it set on heating all the hot air will rise to the upper floor
where is the system located (upstairs or down stairs ) and where is the thermostat located
to get control close any upstairs to down stairs doors or erect a heavy curtain across the stair well

Check the fans are all working ok and make sure there isn't a louvre closed in the duct

jbrown - Hot air rises, Cold air falls. If you have ceiling fans upstairs, turn them on to run counterclockwise at highest speed you can stand. Make sure all the windows are closed upstairs. The ceiling fans will help to keep the cool air upstairs and pull some from downstairs.

If you don't have ceiling fans, invest in a box type fan that you can place at the head of the stairs (that's the top of the stairs) run it on HIGH and it will act like an exhaust fan, by pulling cool air upstairs. It may take a while, but it will help cool the upstairs to some degree.

Hope this helped you. Please let me know. Thanks.

Could be under sized unit or fan relay on unit.

check the low voltage on your furnace board.. w terminal to your c terminal.. this will tell you if you are getting signal from your stat.

Try setting the fan to Auto.

Hello,lPlease check zone valve at boiler.

Some of this depends on where the air handler/furnace is located. Most often in two story houses, it's in the attic upstairs, or in a closet upstairs. A duct routes air from the furnace to the downstairs supply duct, so it is a distance from the air handler.
When the unit first initiates a heating cycle, that duct is going to be full of cool air, and the duct itself will be cool. So the furnace has to run long enough to push the cool air out, as well as warm the duct up, before your going to feel warm air at the registers downstairs.

Keep in mind, heat rises. And, your thermostat only monitors the immediate area where it's located. In your case, upstairs.
Two story houses are problematic because of this. And one way around it is to have a damper system installed that distributes the air upstairs or downstairs based on a thermostat located in those spaces. There would be 2 dampers, and 2 thermostats (one upstairs, one downstairs). Each stat would control a damper, and the call for heat or cooling.

Let me know if you would like to consider a system like this, and I can point you to components to use. I've put several system like this in.

Sound like there are running on emergency heat which is elrctric.Have the system checked out buy a local heating and cooling company. Have they checked the filter and changed them.

If you start by looking on your gas valve, you should find the correct amperage to set the heat anticipator at. I am not sure if you have a forced hot water system or a steam system, but depending on the case, you may also have a second problem, which is easily addressed. If you have forced hot water, the upstairs baseboard/radiators may be airbound and need to be bleed. If you have steam, you may need to slow down the downstairs valves, and open the upstairs valves to get a balance. Hope this helps