For quite a bit of time, I struggled a good amount with keeping the temperatures in our residence entirely even! If the upper rooms were not too sizzling in the warm season, then the lower rooms were chilly in Winter. For some bizarre reason, there never seemed to be a balance no matter how much I installed independent thermostats… The residence would become too uncomfortable for everyone during these extreme seasons. This went on for years until I managed to figure a way out. It is easily possible to have the entire residence comfortable for everyone, regardless of where they are at any recognizable time or season. My Heating and Air Conditioning dealer said that I should get a zoning system. Experts in the Heating and Air Conditioning industry often suggest splitting the system. I decided to go with the multiple thermostats instead of the electronically controlled dampers in the air duct. This move took care of the issue of uneven heating across the entire residence. If doing this does not work, you simply must find the underlying complication and repair it first. It is possible that even with a zoned system, the problem of uneven heating and cooling keeps happening. In these cases, then other complications are most definitely responsible for the issue. Potential reasons could be blockers; the fan is turned off, clogged soffit vents, and insufficient attic insulation… Whatever is going on with your HVAC, hiring an experienced Heating and Air Conditioning provider is a smart move to make. Make certain that air flows freely through the HVAC machine with no internal or external blockage. Also, be sure to confirm that there are no leaking ducts on the second floor as this could cause a good amount of air loss. When it comes to insulation, make sure to go for the newest technology, meaning that aged residences should be fixed.