Every floor in your home should be a retreat that’s warm and comfy in the cold months 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 first floor.

This could merely be caused by the fact that most thermostats in a house are on the ground floor, which is where people spend the most 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 fixed relatively quickly while others might necessitate more extensive and costly fixes. Here, the team at Comfort Concepts Heating & Air Conditioning will help you solve 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 chalked up to several factors. First, heat rises, so it’s natural for the second floor of a home to get hotter than the first floor. Lack of insulation in the attic or roof can worsen this problem by permitting 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 fight to cool the upstairs sufficiently.

To fix these issues, homeowners could put in additional insulation in the attic and make sure their home has adequate ventilation. If there’s a possibility the air conditioning unit is the correct size for the home, call an experienced HVAC company like Comfort Concepts Heating & Air Conditioning 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 freezing upstairs, that makes for a frosty night for anyone whose bedrooms are on the upper floor. The most common reasons an upstairs not heating like it ought to 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, creating 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 rooms of the building. However, problems with the ductwork can contribute to the upstairs being colder than the downstairs. A frequently reported reason for this is improper airflow balance. The ducts may not be the correct size or design, which results in 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 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 not correctly located, it can restrict air circulation and cause inadequate heating or cooling. Also, 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 determine why the upstairs is colder than the downstairs, homeowners should hve their ductwork inspected by skilled professionals like the team at Comfort Concepts Heating & Air Conditioning to identify any imbalances, leaks or inadequacies. Sealing leaks and adding new vents or adjusting existing ones can help improve airflow and ensure a more consistent 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 lower floors of your residence, an HVAC zoning system could be a great solution.

An HVAC zoning system divides 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 especially beneficial in situations where the upstairs of a multi-story home is quite hot or extremely cold while the main floor is comfortable. By installing a  zoning system, homeowners can control the temperature independently in each zone, making it possible for them to address specific hot or cold spots effectively.

To find out more about an HVAC zoning system in Yukon, call Comfort Concepts Heating & Air Conditioning. 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 issue in multi-floor homes is when the higher levels are more humid than the lower level.

A typical reason 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 outside infiltrate the upstairs rooms. Plus, if there are any leaks or plumbing issues on the upper floor, that can also cause excessive moisture in that area of a home.

To manage humidity problems, homeowners can increase ventilation by installing fans or opening windows to promote airflow. Appropriate levels of 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 critical.

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