Troubleshooting
Uneven Temperatures in Your House: Causes and Solutions
7 min read••
Temperature differences between rooms are frustrating. Here's why they happen and how to address them.
Living with hot and cold spots is uncomfortable. Understanding the causes helps identify solutions.
Common Causes
Ductwork Issues - Leaky ducts lose conditioned air before it reaches rooms - Undersized ducts restrict airflow to far rooms - Disconnected or damaged ducts eliminate airflow entirely
Sun Exposure Rooms with large windows or south/west exposure gain significant heat in summer.
Poor Insulation Older homes may have inadequate insulation in certain areas, especially above garages or in additions.
Distance from Equipment Rooms far from the furnace/AC receive less conditioned air. This is physics.
Two-Story Homes Heat rises. Upper floors are typically warmer, especially in summer.
Return Air Problems Insufficient return air from certain rooms prevents proper circulation.
Solutions
Easy Fixes - Adjust register dampers to direct more air to problem rooms - Keep interior doors open for better circulation - Use fans to move air between rooms - Check that vents aren't blocked
Moderate Improvements - Add duct insulation - Seal duct leaks (especially in unconditioned spaces) - Add weatherstripping and address air leaks in problem rooms - Upgrade window treatments
Significant Solutions - Install a zoning system for independent temperature control - Add ductwork or modify existing layout - Install a ductless mini-split for problem areas - Upgrade insulation
Professional Assessment
If simple fixes don't help, a professional can: - Test duct system for leaks and airflow - Identify specific problem areas - Recommend appropriate solutions - Perform Manual J load calculation if considering equipment changes