What temp should my suction line be?

The suction temperature should be above 35°F and below 65°F entering the compressor and the discharge line temperature should be below 220°F and above 150°F (typically) on a properly functioning package unit. 20.

Should the suction line be hot?

Any liquid in the suction line could damage the compressor. Look up “Super heat Adjustment”. Because your hand is in the 90's, the suction line should always feel cool. The liquid line should not be hot or warm for that matter.

How hot should suction line be in heat mode?

A more applicable guideline is 20˚-25˚ suction saturation below outdoor ambient. This means if it is 50˚ outside the suction saturation temperature should be between 25˚and 30˚ (on most systems).

Why is my suction line warm?

The external suction line running hot means it's running on heat mode. The real suction line is inside the unit and runs between the reversing valve and compressor, that part shouldn't be hot at any time.

How is suction line temperature measured?

Ventilation for open flued appliances

Is the suction line supposed to be cold?

The Copper Pipe (Suction Line) should be sweating and cold to the touch during a hot day. If it is not cold, your compressor could be off (bad capacitor/ hard start kit) or low on Refrigerant.

What should suction line temp be R-22?

For example, 68 psi suction pressure on a R-22 system converts to 40°F. Let's say the suction line temperature is 50°F. Subtracting the two numbers gives us 10°F of superheat. Superheat for most systems should be approximately 10F measured at the evaporator; 20°F to 25°F near the compressor.

Why is my low pressure line hot?

AND THEN, because there is no freon getting into the suction line, the compressor is essentially making a vacuum on the suction line, which will make a hot. That's why when the system is low on freon and you keep the system running, eventually the liquid line will be frozen and the suction line will be warm.

Is the liquid line hot?

The liquid line is indeed much hotter than it [should be], given the 70-degree outside temp that was present when I looked at it. I have no quantitative measurements, but just comparing this apartment system to my system at home, whos liquid line doesn't get 'hot' until the temp approaches 95 outside.

Should car AC lines be hot?

The liquid line side should be HOT and the Evaporator side should be COLD. This temperature change should be dramatic. If not there could be a problem with the TXV. The Evaporator is also set up like a small radiator with the refrigerant circulating thru it.

What should suction line temp be 410A?

A normally operating R-410A system with the same condensing temperature of 120 degrees and a 45 degree evaporator saturation temperature will have a high side pressure of 418 psig and a low side pressure of 130 psig.

What happens if your suction line is too small?

Sizing The Liquid Line

Liquid lines have similar design limitations as suction lines. A liquid line that is too small will have too much pressure drop. This can cause the liquid to begin to boil before it reaches the metering device.

How cold should AC supply line be?

Well, the general consensus is somewhere between 14 to 20 degrees colder than the intake temperature. From my example, 55 to 61 degrees would be an acceptable range.

How do you check the temperature of a liquid line?

The Liquid Line Temperature is also measured at the outlet of the condensing unit but now is measured on the small liquid line (B). For this example the Liquid line Temp is 95 degrees. Subtract the Liquid line Temperature from the Liquid Saturation Temperature and you get a Subcooling of 15.

Why is my AC liquid line cold?

Chances are, your indoor unit's evaporator coil is frozen solid and cold liquid refrigerant is flowing to the outside unit through the refrigerant line (which is why it's covered in ice). DO THIS RIGHT NOW: Turn off your AC and turn the fan setting to “ON.”

Why is my high side line cold?

Sounds like the filter dryer is plugged

its a restriction. check your brazed LL connections for "solder balls" inside the joint. then the high side line gets cold all the way to the filter dryer. after the filter dryer it gets luke warm .

What causes high liquid line temperature?

High compression ratios from the low evaporator pressure will cause high heat of compressions, thus high discharge temperatures. High superheats. Both evaporator and compressor superheats will be high. This is caused by the TXV, evaporator, and compressor being starved of refrigerant from the liquid line restriction.

What are good pressure readings for R-22?

What should my gauges read on R-22?

R22 gauge pressure is 10.9 bar or 158.2 psi. High side pressure typically varies by equipment and metering controls. Low pressure or suction side typically varies by equipment. Low-pressure refrigerant turns on the carrier HVACR at 50 psi (R22 pressure at 30 degrees) and closes at 100 psi (R22 pressure at 85 degrees).

What is the normal suction pressure?

The normal range of the suction pressure is 0.8–1.2 MPa. If the suction pressure is greater than 1.2 MPa, connect a rubber hose for the pressure gauge to the gas pipe needle valve for the outdoor unit, and rotate open the pressure gauge to slowly release refrigerant. Start the compressor.

What should the temperature difference be between supply and return?

While there isn't any perfect temperature you should set your HVAC system to, there is an ideal temperature difference between the supply and return air, which should be between 16 and 22 degrees Fahrenheit.

What temp should a car AC put out?

As a rule of thumb, when the ambient air temperatures 70° degrees Fahrenheit (21° Celsius) and humidity 20%, the AC outlet air temperature should be in the 35°-40° degrees Fahrenheit range.

What is normal AC temperature?

Average Air Conditioning Temperature

Anywhere between 72° to 78°F is typically standard. A study in Texas revealed that the model temperature during summer months was between 70° and 75°F.

What is the maximum length of refrigerant piping?

Lengths may be more or less, depending on remaining system design factors. Maximum linear (actual) length = 200 feet. Maximum linear liquid lift = 60 feet.