Toyota Sienna Refrigerant Capacity Chart (2024)

FAQs

What refrigerant is used in Toyota Sienna? ›

Toyota refrigerant filling quantities R134a and 1234yf.

Vehicle in question is a 2007 Toyota Sienna. It uses a variable displacement compressor with a magnetic clutch. There are two evaporators - one up front and another in the rear of the van. System Freon capacity is 27.5oz of R134a.

Most cars hold between 28 and 32 ounces of refrigerant (or about 2—3 12oz cans), however larger vehicles and those with rear A/C will likely hold more.

Typical residential systems hold between 5 and 20 pounds of refrigerant. On average it's about 3 pounds per ton (12,000 BTU) of air conditioning.

Toyota refrigerant (freon) R134a and 1234yf filling quantities*

An environmentally more benign refrigerant for replacing refrigerant R410A includes a majority portion of refrigerant R32 and a minority portion of refrigerant R134a, the volumetric capacity of the replacement refrigerant permitting it to be used as a near or exact drop-in replacement for refrigerant R410A in terms of ...

(1) It depends on the car. Most cars will hold between 28 and 32 ounces of refrigerant (or about 2-3 12oz cans), however larger vehicles and those with rear A/C will likely hold more.

According to PG&E, most central air conditioning systems use two to four pounds of refrigerant per ton of cooling capacity. A three-ton air conditioner would typically have six to 12 pounds of refrigerant for a proper charge.

The first place to look for this information is under the hood. Pop the hood and look for a label, which is usually white or bright yellow. On this it will either say “R-134a” or “R-1234yf,” and it may even say what the capacity is. However, not all cars have this label.

Having too much refrigerant in your AC can damage the compressor. This can happen because the excess refrigerant will likely collect inside the compressor and cause subcooling, wherein temperatures are below normal. Furthermore, the extra refrigerant can flood the compressor and damage its mechanical parts.

What is the volume of 134a refrigerant? ›

Forty PSI is fine. The unknown and likely the critical factor is what is the high side number. What you need is a manifold gauge set so the high side can be monitored. I assume you're using a gauge on one of those DIY charging cans.

Check the gauge readings. For instance, the low port should read 25psi to 45psi, while the high port should read 250psi to 400psi. If both are low, you are most certainly running out of freon. Turn off the engine and disconnect the gauge from the high-pressure service port.

100˚ Over Ambient Rule of Thumb

The most widely quoted rule of thumb is the 100˚ – 110˚ over ambient discharge rule. This guideline states that a properly charged unit will have a discharge line temperature of 100˚ – 110˚ above the outdoor temperature.

In most cars that are on the road today, R134a refrigerant makes the A/C system blow cold on hot days. Selected for its low flammability and safety, as well as because it's kinder to the environment, almost every car built since 1994 is equipped with R134 refrigerant.

Back around 1993 the old R12 was replaced by R134. Now R12 is very expensive while the replacement is cheap. I keep cars for a very long time, and when they get old sometimes the A/C system requires service.

Yes, it uses R134A. I think that R134A was started to be used in some 1993 model Toyota's. I know that it is in my '93 Truck. By '94 I think they had changed all of the AC units over to R134A.

A/C Pro Certified Hybrid Refrigerant, 134a, 10 oz:

Fully compatible and safe for all hybrid vehicle A/C systems. Improves dielectric performance of older, electrically powered A/C systems. Recharges lost refrigerant, safely seals rubber leaks, restores lost oil and boosts cooling power of any A/C system.