What Side is Hot And Cold Water?- (Water Temperature)

In North America, the industry standard is that hot water is on the left side of a faucet, and cold water is on the right side. This arrangement is consistent across single and dual faucets. 

The proper placement of hot and cold water in a faucet is essential for efficient and comfortable use. Many people worldwide consider this setup as an international standard. In addition to faucets, this configuration can also be observed in washing machines, where the hot water valve is positioned on the left and the cold water valve on the right.

This standardization simplifies the usage of plumbing fixtures for individuals, ensuring consistently predictable operation in various settings and appliances.

Hot Water

Hot water is essential to our daily lives, whether for a warm shower, cooking, or cleaning. Understanding the complexities of hot water systems can provide insight into their benefits and safety considerations.

Water Heaters

A water heater is an essential appliance that provides hot water for various domestic purposes. It heats water using electricity, gas, or solar energy.

Temperature Settings

Setting the temperature on your water heater is essential for comfort and safety. A general recommendation is to set the thermostat at 120 degrees Fahrenheit, which is hot enough for most household needs while minimizing the risk of scalding.

Hot Water Safety

When dealing with hot water, safety measures are essential. It is essential to ensure the presence of childproof locks on hot water taps. When installing anti-scald devices, caution should be exercised when handling hot water for cooking.

What Side is Hot And Cold Water


Cold Water

Cold water brings freshness and vitality to our daily lives. To understand its significance, we must know its source, temperature, and uses.

Water Sources

There are varied sources of cold water, such as natural springs, rivers, and glaciers. It can also be obtained from the municipal water supply or through home filtration systems.


Cold water is typically categorized by its temperature, which generally ranges from 0°C to 15°C (32°F to 59°F). This low temperature makes it refreshing and ideal for various purposes.

Uses Of Cold Water

  • Drinking: Cold water provides a refreshing and hydrating experience, particularly on a hot day.
  • Cooking: It is often used to cool down hot foods quickly or to rinse fruits and vegetables.
  • Therapeutic Purposes: Hydrotherapy commonly uses cold water to alleviate muscle soreness and reduce inflammation.
  • Laundry: It helps preserve the colour and quality of clothes while washing.

Factors Affecting Water Temperature

In the Northern Hemisphere, cold water comes from the north, while hot water originates from the south. In contrast, in the Southern Hemisphere, the opposite is true. This pattern is due to the Earth’s rotational forces and the flow of ocean currents.

Factors Affecting Water Temperature Seasons and Climate In winter, water tends to cool due to a decrease in ambient temperature. Distance from Water Heater The water temperature can vary based on the proximity of the home’s water heater. Restrictions and Regulations Some regulations may set water temperature limits for safety and efficiency.

Common Misconceptions

Common misconceptions arise when determining which side of the faucet produces hot water and which side dispenses cold water. Let’s debunk these myths and better understand how hot and cold water systems work.

Hot Water vs. cold Water Pipes

Hot water typically flows from the left side faucet handle in homes, while cold water comes from the right. This arrangement varies based on plumbing configurations and is not universal.

Water Temperature Vs. Water Pressure

  • The temperature of water does not correlate with water pressure;
  • Hot water generally has lower pressure due to increased resistance in the heating elements;
  • Colder water may have higher pressure as it passes through pipes more easily.

Frequently Asked Questions On What Side Is Hot And Cold

Which Side Is Hot And Which Side Is Cold?

The hot water is on the left side, and the cold water is on the right. This is the standard placement for faucets.

What Side Under The Sink Is Hot And Cold?

The hot water side is typically on the left under the sink, and the cold water side is on the right. This is an industry-standard throughout North America.

Why Is Hot Tap Always On The Left?

As an international standard, hot water is on the left side of faucets. This applies to both single-lever and dual faucets. Industry-wise, hot water is on the left, and cold water is on the right in North America.

Which Washer Valve Is Hot And Cold?

The hot water valve on a washer is on the left side, while the cold water valve is on the right.


Understanding which side of your faucet is hot and cold is essential for everyday tasks. Whether you’re doing laundry or washing your hands, knowing the industry standard of hot on the left and cold on the right will make things easier.

By staying informed and being mindful, we can ensure a more efficient and comfortable water usage experience in our daily lives.

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