Difference of 3/8 to 1/4 Vacuum Hose Sizes

difference of 38 to 14 vacuum hose sizes

Optimal Vacuum Hose Sizes: Understanding Vacuum Pump Hose and Various Vacuum Hose Sizes for Efficient Systems

Difference of 3/8 to 1/4 Vacuum Hose Sizes

Because it is a vital player when performing maintenance on air conditioning equipment, the A/C refrigeration vacuum pump's hose is one of the critical instruments a professional will use. There are different sizes of vacuum hoses like 3/8 to 1/4 vacuum hose.


vacuum hose


Refrigerant recovery is already mandated by law, so if you're working on any systems that use refrigerants, you'll have to take the proper steps to recover these gases. Despite the existence of various standards and laws, their disposal can have a considerable impact on the environment.

It's also important to note that if the fridge is exposed to moisture, it may rust and cause issues with the air conditioner, resulting in additional costs in the future. Given the significance of an A/C refrigeration pump, it's understandable that those working in the HVAC sector would want to make sure they have all they need.

Many who have worked in the HVAC sector are familiar with how various air conditioning units operate and which pump is required to do the job properly.

On the other hand, those who are utilizing an A/C refrigeration pump for the first time may be unsure about the size pump to purchase.

Vacuum Hose Sizes


High-Quality Vacuum Hose: Efficient Solution


Quality Vacuum hoses exist in various sizes. They often influence people's buying decisions when looking for a new wet/dry or shop vacuum.

Vacuum hoses of smaller diameters are frequently more maneuverable and flexible, lighter and have performance advantages in specific applications.

Larger hose diameters can gather more dirt and are less likely to clog.

3/8 to 1/4 Vacuum Hose Size Difference

One thing to remember regarding these air hoses is that a 3/8-inch air hose has a two-times greater internal diameter than a 1/4-inch air hose. It can accommodate more air volume with a bigger airflow space.

3/8-inch air hoses, on the other hand, are often heavier than 1/4-inch air hoses. For pneumatic tools that require more power, use a 3/8 air hose, while for light-powered devices, use a 1/4 air hose.


Diverse Vacuum Hose Sizing: Tailored Solutions


Hose Inner Diameter

The diameter of a 3/8 inch air hose is exactly 3/8 inch. From the inside, a 1/4 inch air hose will accurately measure 1/4 inch. A 1/4 inch air hose is twice the size of a 3/8 inch air hose. In either case, a 3/4-inch fitting will fit in either.

Hose Outer Diameter

Air hoses are not needed to have a specified OD. Air hoses can easily be damaged. The outside diameter is determined by the manufacturer's reinforcements and the material type used.

3/8 to 1/4 Air Hose: PSI

Air hoses sold in stores are claimed to withstand 300 PSI (pounds per square inch). However, for most tools, you'll usually set the air pressure to 90 PSI. For this, it will work with both in 3/8 and 1/4 inch air hoses.


It all comes down to the equipment used. If you're a hobbyist or do-it-yourselfer, you'll probably need less air pressure.

A quarter-inch air hose is required for nailers and staplers. A 3/8 air hose is required for a impact wrench with 1/2 size. Even with a 150-foot hose length, an air hose (3/8) size on an air polisher can produce the necessary air pressure.

In the end, a 3/8 air hose is appropriate for more powerful instruments. For light-duty applications, a quarter-inch air hose will suffice.


Rubber, hybrid, PVC, and polyurethane are some of the materials utilized in air hoses. Because the diameter is so small, you'll have difficulty finding 1/4 rubber hoses.

3/8 to 1/4 Vacuum Hose Sizes: Which is Better?

The answer to this question depends on the tool you're using. An air hose with a 3/8 size would be overkill for lightweight options. But if you have a variety of powerful ones in your workshop, a 3/8 hose is better.

If you're an HVAC professional working with powerful equipment such as an impact wrench daily, an 1/4 air hose won't be enough.

Does the size of the air compressor hose matter?

When it comes to transferring air pressure to the tool, the diameter and length of the hose go hand in hand. A 3/8 hose allows for plenty of power. The air compressor also influences the performance of a tool. If your hose can handle much power, but your air compressor isn't big enough to take it, the compressor will have to work harder to fulfil the demands. The electricity would very certainly be insufficient.

Know What Size You Need

Tools You're Using

I'd examine the tools I own and determine how much power they require. Take into account potential tools and projects as well.

Pressure Resistance

Flexible garden hoses can withstand a certain amount of pressure. You don't want your hose to burst into a tornado of air. Check that the hose can withstand the typical 90 to 150 PSI pressure range, or get one that can withstand 200 PSI.


Rubber is more resistant to chemicals and the environment. Working with your hose might expose it to oil, grease, acid, and other substances.

When Should I Use a ⅜ vacuum hose and a ¼ vacuum hose?

When using light-powered instruments, you don't need a 3/8 hose. It's best for tools with a lot of power. For lightweight devices, use a 1/4-inch air hose.

Robinair Charging & Vacuum Hose 3/8" 68060 (150cm)


Top-Quality Charging Vacuum Hose Usage


One of the vacuum hoses we offer here at the HVAC Shop in Australia is the Robinair Charging & Vacuum Hose 3/8" 68060 (150cm). The Robinair Premium Refrigerant Charging and Vacuum Hoses are designed to last a long time.

A strong, six-sided crimp ensures a secure connection between the hose and the barb, even at high pressure. The coupler nuts are highly knurled for easy tightening and loosening with your fingers.

3/8 to 1/4 Vacuum Hose Sizes

It's just a matter of selecting a reliable source once you've identified what size A/C refrigeration pump you'll need. Although it may be appealing to see what other merchants have to offer, if the price appears too good to be true, it most likely is.

When purchasing an A/C vacuum pump, it's critical to make sure you're buying from reputable vendors like HVAC Shop.