Low airflow will cause heat exchanger to.
Closing off air conditioner vents.
Low airflow causes the coil to get too cold and sometimes turn into a block of.
This can increase your energy bills and even lead to premature breakdown of your ac if you close too many vents.
As it turns out closing air vents in a home with a modern central heating and air conditioning system does little to save energy.
Closing vents disrupts this balance and creates pressure in your system which causes your air conditioner to work harder.
How closing air vents can hurt your hvac system.
To close off a room or an entire section of your home to air conditioning and or heating this is the correct way to do it.
Homeowners typically close vents in an attempt to redirect air away from unused spaces.
Air conditioner s evaporator coil the part that cools the air.
Ask for a recommendation of which vents if any in your home make sense to close without placing stress on.
If it s a typical duct system with 60 higher static pressure than the maximum specified closing even one register could send the system over the edge.
Your air ducts make it worse.
In addition this increased pressure places strain on your air ducts.
In fact it could even cause your energy costs to increase.
Why closing air vents doesn t work.
The belief is that closing a vent will simply push the air onward to other parts of the home improving energy efficiency.
Ensure that your ducts are properly sealed and connected.
In a 2003 study the lawrence berkeley national laboratory discovered that register closing led to increased energy use.
The study also found that whatever benefit was derived from closing air vents was largely offset by increased duct leakage.
Furnace s heat exchanger the part that heats the air.
Closing air vents is a popular strategy for adjusting air flow in the home but it s not necessarily a good one.