Beretta
Short Cycling / Poor Heat Transfer
Furnace short cycles, turning on and off frequently without reaching set temperature
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Possible Causes
Oversized furnace for the space, Clogged air filter, Blocked supply or return vents, Faulty thermostat placement (near heat source)
How to Fix / Troubleshooting
Safety: Turn off power before removing panels.
- Replace or clean filter: Check the return air filter and replace if dirty.
- Open vents: Ensure all supply and return grilles are open and unobstructed.
- Check thermostat location: If the thermostat is near a heat source or in direct sunlight, it may sense temperature incorrectly. Consider relocating it with the help of an HVAC technician.
If short cycling persists, a professional should check burner modulation and heat exchanger condition.
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Repair Difficulty
Easy
2/5
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