Your entire residence should be a sanctuary that’s warm and toasty in the cold months and cool and comfortable in the summer. However, owners of some homes with multiple levels find the upper floor is stubbornly hotter or colder than the first floor.

This could just be due to the fact most thermostats in a house are on the first floor, which is where people spend the greatest amount of time—in the living room, kitchen, etc.—so they set the temperature according to how it feels on the first floor.

However, temperature discrepancies between the upstairs and downstairs could also be due to issues with your HVAC system. Some of these issues can be resolved fairly quickly while others might call for more extensive and costly fixes. Here, the specialists at McFadden Heating & 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 becoming hotter than the downstairs can be traced to several factors. Number one, heat rises, so it’s normal for the second floor of a home to get hotter than the main floor. Not enough 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 HVAC system is not powerful enough to cool the entire home, causing it to have difficulty cooling the upstairs effectively.

To address these issues, homeowners could put in additional insulation in the attic and make sure their home has proper ventilation. If there’s a possibility the air conditioner is the ideal size for the home, call an experienced HVAC company like McFadden Heating & Cooling inspect the unit. A qualified professional also can help find a unit that's better suited for your home if you require air conditioning installation or replacement.

Why Is My Upstairs So Cold/Not Heating?

When the downstairs of your home is warm, but it’s extremely chilly upstairs, that could result in an ice-cold night for anyone whose bedrooms are on the upper floor. The most prevalent reasons an upstairs not heating like it ought to are the insulation levels and the ductwork.

Inadequate insulation permits cold air to filter through the home’s attic or walls and contribute to heat loss, creating colder temperatures on the upper levels. It’s important to make sure your home has a deep, 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 distributing conditioned air throughout different locations of the building. However, troubles with the ductwork can cause the upstairs being colder than the lower floor. A typical reason for this is improper airflow balance. The ducts may not be the right size or design, creating an uneven distribution of air between the floors. This can cause more warm air to flow downstairs, causing insufficient airflow—which is the heated air—on the higher floors.

Another possible issue with the ductwork is the placement of the supply and return vents. If there are fewer vents on the upper level or they are not correctly installed, it can reduce air circulation and cause inadequate heating or cooling. Also, leaks or gaps in the ductwork can allow air loss, reducing the overall efficiency of the HVAC system and exacerbating the temperature difference.

To figure out why the upstairs is colder than the downstairs, homeowners should hve their ductwork examined by trusted professionals like the team at McFadden Heating & Cooling to identify any imbalances, leaks or inadequacies. Sealing leaks and putting in more vents or adjusting existing ones can help enhance airflow and ensure a better temperature balance between the upstairs and downstairs.

What Do I Do to Fix a Hot/Cold Upstairs?

If your upstairs is hotter or colder than the lower floors of your home, an HVAC zoning system could be an effective solution.

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

This system can be very beneficial in situations 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 manage the temperature independently in each zone, enabling them to address specific hot or cold spots effectively.

To discover more about an HVAC zoning system in Dresden, call McFadden Heating & 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 enhance the comfort in your home.

Why Is My Upstairs So Humid?

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 upstairs is more humid than downstairs.

A frequent cause for excess upper floor humidity is weak ventilation on the upper floor, which can result in higher humidity levels. As is often the case with temperature differences between floors, inadequate insulation or sealing in the attic or walls may allow warm, humid air from outdoors infiltrate the upstairs rooms. Plus, if there are any leaks or plumbing problems on the upper floor, that can also lead to extra moisture in that section of a home.

To fix humidity problems, homeowners can improve ventilation by getting fans or opening windows to promote airflow. Proper 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 helpful tool to manage humidity in your home.