Vents

• Something as simple as your vent placement, size and condition can have a big impact on your home's temperature. If your bedroom is smaller than the other rooms in your home but still has multiple full-size vents that deliver air into your room, it could account for the temperature difference. If those vents are completely opened and uncovered, but not so in other rooms, you could also experience extra warmth. Closing off one or more of the vents could regulate temperatures.
  
  

Windows and Sunlight

• The number and quality of windows in a room affect the temperature. Leaky windows let central air or air conditioning out, according to Magnolia Heating and Air Conditioning. Very large or numerous windows make it more difficult to control the room's temperature. Not only does the number of windows in your room affect the temperature, but so can the location of the sun in relation to those windows. If your bedroom gets direct sunlight for much of the day and other rooms in your house do not, you could experience higher temperatures.
  
  

Duct Work

• Duct work could play a role in your home's uneven heating. The rooms that feel colder might have leaks, broken seals or clogs in the ducts that make those rooms feel colder. Repairing those problems would make your home heat more evenly.
  
  

Proximity to the Heater

• Bedrooms that are closer to the heater can trend a few degrees warmer than other rooms in the house because air doesn't have to travel long distances or through extra crooks and bends in your duct work to get to its location. The farther air travels, the more energy and heat it loses over the surface of the ducts.
  
  

Unbalanced Air Distribution

• An unbalanced heating or cooling system can ineffectively deliver air and cause temperature variations. HVAC specialists can evaluate your heating or cooling system and balance the airflow so each room heats and cools evenly.