Air Handler Fan Speed Too Low

Changing the speed of the air handler to a slower setting can reduce allergens and alter the interior humidity level in the home which can be beneficial in the winter when the heat is being used. On the other hand if the blower speed is too low your evaporator coil is at risk of freezing. If you begin to notice a change in your fan s speed it seems too fast or slow there are 3 key areas to have your portland air conditioning technician from clean air act inspect on your ac system.

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Low speed helps in a number of ways summer and winter.

Air handler fan speed too low.

If a blower speed is set too high your ac might not be operating optimally. If you set the fan speed too low the firebox will get too hot because there is not enough airflow to carry the heat away and your unit will shut down on a high heat overload safety cutoff. The cost of moving air should not be discounted. Both fans have an equal part in cooling your home.

Air handler fan speed. This article describes using jumpers or switch settings or independent controls to adjust the blower fan speed in air handlers used in heating and cooling systems. Click to enlarge any image. There is no single right fan speed for all heating and cooling conditions and both high and low speed settings have uses and advantages.

In winter low fan speeds mean less propensity for drafts and warmer discharge air temperatures both good things. So if you are running a fan at low speed it gives the compressor and cooling coil time to dehumidify the air rather than just cool it. Adjusting the fan speed on an air handler i have a goodman air handler. Switching the air speed can be accomplished easily with a few simple tools.

The higher the humidity the more uncomfortable you feel at a lower temperature. This is because the evaporator coil will not be able to adequately dehumidify the space in need of cooling. Posted by joshua lloyd on june 20 2013 at 3 26pm in hvac. Slower coil face velocities enhance dehumidification too.

Adjusting tempstar blower speed new unit. Icp tempstar n8mxl 1102120a with ac condensor h4a436gka furnace. When it s in heating and cooling mode the fa read more. How to change air handler fan speed.

Furnace blower speed setting.