Every floor in your home should be a sanctuary that’s warm and toasty in the winter season and cool and comfortable in the summer. However, owners of some two-story homes find the upper floor is stubbornly hotter or colder than the first floor.

This could merely be due to the fact most thermostats in a house are on the ground 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 differences between the upstairs and downstairs could also be because of problems with your HVAC system. Some of these difficulties can be resolved fairly quickly while others might require more extensive and costly fixes. Here, the team at Farnell Mechanical, Inc. will help you solve why the upstairs of your home is hotter than downstairs, or vice versa.

Why Is It Hotter Upstairs?

The phenomenon of the upstairs of a two-story home getting hotter than the downstairs can be attributed to several factors. First, heat rises, so it’s common for the second floor of a home to get hotter than the main floor. Not enough insulation in the attic or roof can exacerbate this issue by letting heat transfer from the roof into the upstairs rooms.

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

To address these issues, homeowners could add extra insulation in the attic and make sure their home has adequate ventilation. If there’s a possibility the air conditioner is the ideal size for the home, call an experienced HVAC company like Farnell Mechanical, Inc. inspect the unit. A skilled 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 So Cold/Not Heating?

When the downstairs of your home is warm, but it’s freezing upstairs, that makes for a very chilly night for anyone whose bedrooms are on the upper floor. The most common causes of an upstairs not heating like it is supposed to are the insulation levels and the ductwork.

Inadequate insulation enables cold air to seep through the home’s attic or walls and contribute to heat loss, resulting in colder temperatures on higher floors. It’s crucial 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 fundamental role in circulating conditioned air throughout different locations of the building. However, problems with the ductwork can contribute to the upstairs being colder than the downstairs. A typical explanation 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 be directed to the downstairs, causing insufficient airflow—which is the heated air—on the higher floors.

Another possible issue with the ductwork is the location of the supply and return vents. If there are fewer vents on the upper floor or they are poorly positioned, it can restrict air circulation and cause inferior heating or cooling. In addition, leaks or gaps in the ductwork can cause air loss, lowering the overall efficiency of the HVAC system and exacerbating the temperature difference.

To understand why the upstairs is colder than the downstairs, homeowners should hve their ductwork checked by trusted HVAC pros like the team at Farnell Mechanical, Inc. to identify any imbalances, leaks or inadequacies. Sealing leaks and putting in new 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 an effective solution.

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

This system can be very effective in scenarios where the upstairs of a multi-story home is too hot or extremely cold while the main floor is comfortable. By investing in a  zoning system, homeowners can regulate the temperature independently in each zone, allowing them to address specific hot or cold spots easily.

To discover more about an HVAC zoning system in Auburn and Opelika, call Farnell Mechanical, Inc.. We’ve developed 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 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 common cause for excess upper floor humidity is poor ventilation on the upper floor, which can produce greater humidity levels. As is often the case with temperature differences between floors, insufficient insulation or sealing in the attic or walls may allow 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 fix humidity problems, homeowners can improve ventilation by using fans or opening windows to promote airflow. Proper insulation  in the attic and better sealing the attic and walls can help prevent external moisture from entering the upstairs. Locating and repairing any leaks or plumbing issues is also imperative.

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