Your entire residence should be a retreat that’s warm and comfy in the winter and cool and comfortable in the summer. However, residents in some two-story homes find the upper floor is stubbornly hotter or colder than the main floor.

This could simply be because most thermostats in a house are on the first floor, which is where people spend the the majority of time—in the living room, kitchen, etc.—so as a result they tend to set the temperature according to how it feels on the first floor.

However, temperature variations between the upstairs and downstairs could also be because of trouble with your HVAC system. Some of these challenges can be fixed relatively quickly while others might necessitate more extensive and costly fixes. Here, the team at Stephen Hurst Pack Heating and Cooling will help you determine why the upstairs of your home is hotter than downstairs, or vice versa.

Why Is It Hot Upstairs?

The phenomenon of the upstairs of a two-story home getting hotter than the downstairs can be traced to several factors. Number one, heat rises, so it’s common for the second floor of a home to get hotter than the main floor. Lack of insulation in the attic or roof can worsen this problem by allowing heat transfer from the roof into the upstairs rooms.

Another common reason is that the air conditioner is not powerful enough to cool the entire home, causing it to struggle to cool the upstairs adequately.

To tackle these issues, homeowners could put in more insulation in the attic and make sure their home has proper ventilation. If there’s a question of whether the air conditioning unit is the ideal size for the home, call an experienced HVAC company like Stephen Hurst Pack Heating and Cooling inspect the unit. A knowledgeable professional also can help select a unit that's better suited for your home if you are considering air conditioning installation or replacement.

Why Is My Upstairs Colder/Not Heating?

When the downstairs of your home is warm, but it’s very cold upstairs, that makes for an ice-cold night for anyone whose bedrooms are on the upper floor. The most frequent reasons an upstairs not heating like it should are the insulation levels and the ductwork.

Inadequate insulation allows cold air to leak through the home’s attic or walls and contribute to heat loss, resulting in colder temperatures on the upper levels. It’s crucial to make sure your home has a solid, level layer of insulation in the attic and appropriate insulation in the walls to keep the cold out and the heat inside.

The ductwork in a home plays a very important role in circulating conditioned air throughout different locations of the building. However, problems with the ductwork can cause the upstairs being colder than the main level. A frequently reported cause for this is improper airflow balance. The ducts may not be the correct size or design, causing an uneven distribution of air between the floors. This can cause more warm air to flow downstairs, which creates insufficient airflow—which is the heated air—on the upper level.

Another factor with ductwork is the placement of the supply and return vents. If there are fewer vents on the upper floor or they are not correctly installed, it can restrict air circulation and cause substandard heating or cooling. Additionally, leaks or gaps in the ductwork can allow air loss, reducing the overall efficiency of the HVAC system and making the temperature difference more pronounced.

To find out why the upstairs is colder than the downstairs, homeowners should hve their ductwork inspected by skilled HVAC pros like the team at Stephen Hurst Pack Heating and Cooling to identify any imbalances, leaks or inadequacies. Sealing leaks and putting in additional vents or adjusting existing ones can help enhance airflow and ensure a more even temperature balance between the upstairs and downstairs.

How You Can Fix a Hot or Cold Upstairs?

If your upstairs is hotter or colder than the rest of your house, an HVAC zoning system could be a great solution.

An HVAC zoning system breaks the residence into different zones, which each have their own thermostat and damper system so the homeowner can control the heating or cooling of each zone.

This system can be particularly useful in scenarios where the upstairs of a multi-story home is very hot or really cold while the main floor is comfortable. By implementing a  zoning system, homeowners can control the temperature independently in each zone, allowing them to address specific hot or cold spots effectively.

To discover more about an HVAC zoning system in Circleville, call Stephen Hurst Pack Heating and Cooling. We’ve designed and installed customized home comfort plans for many community members and are happy to show how an HVAC zoning system could work in your home.

Why Is it So Humid Upstairs?

In addition to the upper story being hotter or colder than the rest of the house, another problem in multi-floor homes is when the upper floors are more humid than the first floor.

A frequent reason for excess upper floor humidity is inadequate ventilation on the upper floor, which can result in greater humidity levels. As is often the case with temperature differences between floors, poor insulation or sealing in the attic or walls may let warm, humid air from outside the house infiltrate the upstairs rooms. Plus, if there are any leaks or plumbing issues on the upper floor, that can also cause unwanted moisture in that area of a home.

To deal with humidity problems, homeowners can add more ventilation by using fans or opening windows to promote airflow. Adding more insulation  in the attic and better sealing the attic and walls can help protect against external moisture from entering the upstairs. Identifying and repairing any leaks or plumbing issues is also critical.

Depending on the levels of moisture found in the home, a whole-home dehumidifier could be another valuable tool to control humidity on the upper and lower floors.