Potential reasons include blockers; the fan is turned off, congested soffit vents, plus insufficient attic insulation.
For quite some time, I struggled with keeping the uneven temperatures in my household even. If the upper rooms were not too overheated in summer, then the lower rooms were frosty in winter. For some reason, there never seemed to be a balance no matter how much I installed independent thermostats. The house would become too uncomfortable for everyone during these peak seasons. This went on for a number of years until I figured a way out. It is possible to have the entire household comfortable for everyone, regardless of where they are at any identifiable time or season. My Heating as well as Air Conditioning professional advised me on getting a zoning system. Experts in the Heating as well as Air Conditioning industry often suggest splitting the system. I chose to go with the numerous thermostats instead of the electronically controlled dampers in the HVAC duct. This change solved the setback of uneven heating across the entire household. If doing this does not work, you need to find the underlying setback plus maintenance it first. It is possible that even with a zoned system, the complication of uneven heating plus cooling keeps on going. In such cases, then other complications are easily responsible for the issue. Potential reasons include blockers; the fan is turned off, congested soffit vents, plus insufficient attic insulation. Whatever the point is, hiring an experienced Heating as well as Air Conditioning provider is definitely suggested . Make sure air flows freely through the system with no internal or external clogging. Also, confirm that there are no leaking ducts on the top floor as this could cause a huge amount of air loss. When it comes to insulation, make sure to go for the latest technology, meaning that old households should be fixed.