Every floor in your home should be a retreat that’s warm and cozy in the winter season and cool and comfortable in the summer. However, owners of some multi-level residences find the upper floor is stubbornly hotter or colder than the first floor.

This could just 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 it makes sense to set the temperature according to how it feels on the first floor.

However, temperature differences between the upstairs and downstairs could also be due to issues with your HVAC system. Some of these difficulties can be resolved relatively quickly while others might require more extensive and costly fixes. Here, the professionals at Wallpe Heating & Cooling will help you solve why the upstairs of your home is hotter than downstairs, or vice versa.

Why Is My Upstairs So Hot?

The phenomenon of the upstairs of a two-story home becoming hotter than the downstairs can be chalked up to several factors. For starters, heat rises, so it’s normal for the second floor of a home to get hotter than the ground floor. Lack of insulation in the attic or roof can worsen this problem by letting heat transfer from the roof into the upstairs rooms.

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

To deal with these issues, homeowners could add additional insulation in the attic and make sure their home has proper ventilation. If there’s a possibility the AC is the right size for the home, call an experienced HVAC company like Wallpe Heating & Cooling inspect the unit. A qualified professional also can help locate a unit that's better suited for your home if you need 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 a frosty night for anyone whose bedrooms are on the upper floor. The most prevalent causes of 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 higher floors. It’s essential to make sure your home has a deep, level layer of insulation in the attic and proper insulation in the walls to keep the cold out and the heat inside.

The ductwork in a home plays a fundamental role in circulating conditioned air throughout different rooms of the building. However, troubles with the ductwork can contribute to the upstairs being colder than the downstairs. A typical reason for this is improper airflow balance. The ducts may not be the proper size or design, resulting in an uneven distribution of air between the floors. This can cause more warm air to go downstairs, causing insufficient airflow—which is the heated air—on the upper story.

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 poorly installed, it can restrict air circulation and cause inferior heating or cooling. Additionally, leaks or gaps in the ductwork can lead to 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 HVAC pros like the team at Wallpe Heating & 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 better temperature balance between the upstairs and downstairs.

Fixing the Hot or Cold Upstairs Problem?

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 control the heating or cooling of each zone.

This system can be very effective in situations where the upstairs of a multi-story home is very hot or extremely 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 effortlessly.

To find out more about an HVAC zoning system in Greensburg, call Wallpe Heating & Cooling. We’ve developed 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 issue in multi-floor homes is when the upper floors are more humid than downstairs.

A typical explanation for excess upper floor humidity is weak ventilation on the upper floor, which can produce higher humidity levels. As is often the case with temperature differences between floors, insufficient insulation or sealing in the attic or walls may let warm, humid air from outside the house infiltrate the upstairs rooms. In addition, if there are any leaks or plumbing concerns on the upper floor, that can also cause excess moisture in that area of a home.

To deal with humidity problems, homeowners can add more ventilation by getting fans or opening windows to promote airflow. Appropriate levels of insulation  in the attic and better sealing the attic and walls can help protect against external moisture from entering the upstairs. Locating 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 useful tool to reduce humidity on the upper and lower floors.