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Can AC Run 24/7?

Published in AC Operation 3 mins read

Whether an air conditioner can run 24/7 depends on several factors. While modern AC units can run continuously, doing so isn't always ideal.

The Impact of Continuous AC Use

Running your AC constantly might seem like a good way to stay cool, but it has potential drawbacks:

  • Higher Energy Bills: Continuous operation significantly increases energy consumption, leading to much higher electricity bills. This is highlighted by multiple sources, including Apollo Heating and Air, which points out the direct correlation between energy use and cost.

  • Reduced Air Conditioner Lifespan: As noted on Quora, running an AC unit at 100% duty cycle can damage the compressor due to overheating and bearing wear. This isn't true for all units, but it's a significant risk for many.

  • Potential Health Concerns: A source on the topic mentions that continuously running an AC without proper filter maintenance can circulate dust, potentially leading to health problems.

  • Inefficiency: Contrary to popular belief, constantly running the AC doesn't always save energy. A Reddit thread debunks the myth that leaving the AC on all day saves money. Cycling on and off can be more efficient depending on the outside temperature and your unit's design.

When 24/7 AC Operation Might Be Necessary

Some situations might necessitate running your AC continuously:

  • Specific Unit Requirements: Some AC units, especially older ones as mentioned on Reddit (https://www.reddit.com/r/HVAC/comments/ckb7t4/running_ac_247/), may require continuous operation to prevent issues restarting. However, this is less common with modern units.
  • Extreme Heat: In exceptionally hot climates, continuous operation may be needed to maintain a comfortable indoor temperature.

Conclusion

While technically possible for many modern units, continuously running your air conditioner isn't usually recommended due to increased energy costs and potential equipment damage. Regular filter cleaning is also crucial for health reasons.

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