Your entire home should be a refuge that’s warm and toasty in the winter and cool and comfortable in the summer. However, families who live in 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 they set the temperature according to how it feels on the first floor.

However, temperature variations between the upstairs and downstairs could also be due to trouble with your HVAC system. Some of these difficulties can be solved somewhat quickly while others might require more extensive and costly fixes. Here, the professionals at North Mechanical Heating and Cooling 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 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 first floor. Insufficient 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 air conditioning is not powerful enough to cool the entire home, causing it to struggle to cool the upstairs properly.

To address these issues, homeowners could install extra insulation in the attic and make sure their home has proper ventilation. If there’s a question of whether the AC is the right size for the home, call an experienced HVAC company like North Mechanical Heating and Cooling 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 Always Cold/Not Heating?

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

Inadequate insulation lets cold air to filter through the home’s attic or walls and contribute to heat loss, resulting in colder temperatures upstairs. It’s important to make sure your home has a thick, 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 very important role in disseminating conditioned air throughout different locations of the building. However, troubles 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 configuration, causing an uneven distribution of air between the floors. This can cause more warm air to flow downstairs, leaving insufficient airflow—which is the heated air—on the higher floors.

Another potential problem area in the ductwork is the placement of the supply and return vents. If there are fewer vents on the upper level or they are poorly placed, it can restrict air circulation and cause inadequate heating or cooling. In addition, leaks or gaps in the ductwork can allow air loss, reducing the overall efficiency of the HVAC system and actually making the temperature difference worse.

To figure out why the upstairs is colder than the downstairs, homeowners should hve their ductwork checked by trusted professionals like the team at North Mechanical Heating and Cooling to identify any imbalances, leaks or inadequacies. Sealing leaks and installing additional vents or adjusting existing ones can help improve airflow and ensure a more consistent 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 rest of your house, an HVAC zoning system could be an effective solution.

An HVAC zoning system separates the residence into distinct 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 particularly beneficial in scenarios where the upstairs of a multi-story home is quite 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, enabling them to address specific hot or cold spots effortlessly.

To find out more about an HVAC zoning system in Payson, call North Mechanical 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 benefit 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 challenge in multi-floor homes is when the upstairs is more humid than downstairs.

A common cause for excess upper floor humidity is poor ventilation on the upper floor, which can result in greater 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. And, 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 deal with humidity problems, homeowners can improve ventilation by installing fans or opening windows to promote airflow. Adding more insulation  in the attic and better sealing the attic and walls can help prevent 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 useful tool to manage humidity on the upper and lower floors.