How to Get Rid of the Hot and Cold Spots in Your Home

Hot and cold spots in a home are an all-season annoyance and often result in higher cooling and heating costs. When you can’t count on comfortable, uniform temperatures in all rooms — even after repeatedly fine-tuning the thermostat setting — it’s time to take more proactive measures to bring some consistency to the indoor environment and eliminate hot and cold spots.

Hot and cold spots may result from problems related to system airflow, insulation issues, and air infiltrating from outdoors. Here are some possible explanations.

  • Low airflow systemwide. If the volume of air circulating in the HVAC system is insufficient, areas of the house located farthest from the air handler remain stubbornly hot in summer and too cold in winter. Low airflow in the system may be as simple as a dirty air filter. Another possible cause is a defective blower fan that no longer delivers sufficient airflow.
  • Ductwork issues. Leaky or disconnected ducts may leave certain rooms or zones without adequate cooling or heating while other rooms still get ample airflow. A qualified HVAC technician can perform a duct-leakage test to determine the status of ducts and track down leakage or damage causing a loss of conditioned air.
  • Damper adjustment. Balancing dampers inside branch ducts regulate cooling and heating into a specific room. Over time, these dampers may loosen and close partially, reducing the flow of air into that room.
  • Insulation variation. Attic insulation keeps summer heat outside and holds winter warmth inside the house. If the amount of insulation is uneven in certain areas or damaged by some source like a leaky roof, heat gain in summer and heat loss in winter may affect that area of the house.
  • Outdoor air infiltration. Air leakage into a specific room from cracks and gaps in the structure makes temperature control in that room unstable. HVAC contractors typically use a blower-door test to determine the amount of air leakage and make necessary repairs.

For qualified service to track down and eliminate the cause of hot and cold spots in your home, talk to the pros at NisAir Air Conditioning and Heating.

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