When your indoor thermostat is set to 73 degrees Fahrenheit but your house still feels uncomfortably cold, the issue is often related to air stratification, drafty structural sealing, or how your heating system delivers warmth. Heat pumps circulate a steady stream of moderate air rather than the intense blasts of heat produced by fossil fuel furnaces, which can make the air feel drafty if your home lacks proper insulation, double-paned windows, or weatherstripping around exterior doors. Additionally, if your indoor air filter is severely clogged, it restricts airflow and prevents warm air from mixing properly throughout the living space, causing cold spots. Furthermore, if the humidity level is low, dry air makes human skin feel cooler at higher temperatures. You can troubleshoot by checking your air filter, sealing drafts, and ensuring supply registers are fully open. You can verify comfort improvements by testing room temperature distribution with a digital thermometer.
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