What Should The Temperature Of The Air Be Coming From One Of The Heat Register's

Wondering what temperature your Air-conditioning should be blowing into your abode?

Well, there'due south not a universal, fixed temperature your AC should ever be blowing. The temperature your Air conditioning puts out is relative to the temperature you lot set on your thermostat.

So fifty-fifty though at that place's no single ideal temperature, you do want a 16°–22° F difference from the supply air and render air. Professionals telephone call this temperature difference the evaporator Delta T.

When evaporator Delta T is between 16°–22° F, that ways your system is working properly. But if temperatures fall outside of that range, it ways your AC has some issues.

In this article, we'll go into how you can summate evaporator Delta T and what bug you could accept when air temperatures fall outside the ideal range.

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Let's start past going into more detail nigh evaporator Delta T...

The deviation between supply & return air temperature

Just so we're on the same folio, permit's discuss what we mean by supply and return air.

Supply vent register in a home — *A supply vent register*

Simply put, supply air is the air entering your home through the registers/vents pictured in a higher place.

Return grill of an air conditioner in a home — *A render air grill*

The air then goes back into your ductwork via the return vent, is cooled, and reenters your home through the supply registers.

Model of supply and return air process in an attic of a home — *Air enters your home through the supply vent, then goes dorsum into the system through the render grill.*

The indoor AC part that actually cools your home's warm air is chosen the evaporator scroll (pictured as a snowflake in the image above).

When nosotros calculate evaporator Delta T, we're trying to see how efficiently the coil is working.

So now that you know supply vs. return air, you tin summate evaporator Delta T:

How to calculate evaporator Delta T

"My Delta T doesn't fit into the 16F°- 22F° range. What does that mean?"

The short answer is, it means something'due south not working correctly in your Air conditioning. Let's look at some common problems:

High Delta T issues (more than 22F° deviation)

High evaporator Delta T means that the incoming temperature and outgoing temperature is excessively large. It'southward usually caused by low air flow beyond the gyre, which includes problems like:

A muddied air filter
Fan set to an wrong speed
A dingy evaporator ringlet
Ductwork is likewise small

Learn more about why your AC is blowing hot air.

Solution:

Try replacing your air filter to encounter if that reduces the temperature difference
Hire a professional to clean the coil, increment the blower motor speed and audit your system for other issues

Depression Delta T issues (less than 16F° difference)

Low evaporator Delta T means that there'southward an excessively small departure betwixt the incoming and outgoing temperature. Low evaporator Delta T issues include:

Low refrigerant (Freon) levels
Weak compressor valves
Leaking reverse valves
Leaking render air ductwork

Solution:

Hire a professional to check your system for refrigerant leaks and audit your valves and ductwork.

Is your AC not blowing at the correct temperature?

Contact George Brazil to schedule an air conditioning repair. We will send ane of our trusted professionals to your domicile to get your AC back in tip-peak shape