In the realm of household appliances, compatibility is key. When it comes to plumbing and drainage systems, ensuring the proper fit for each component is crucial for smooth operations.

This brings us to a common query: Can you use 32mm waste for washing machine? The answer to this question delves beyond a simple ‘yes’ or ‘no.’

So, I will explore the nuances surrounding this query, shedding light on the considerations necessary to make an informed decision.

Let’s start!

Can You Use 32mm Waste for Washing Machine?

You can, but it’s not ideal. 32mm waste is typically used for sinks and baths, so it’s not as strong as 50mm waste which is used for washing machines.

Using a 32mm waste pipe for a washing machine can be feasible in certain circumstances, but it’s important to consider several factors.

  1. Washing Machine Capacity: A smaller washing machine with lower water usage might suit a 32mm waste pipe. However, larger and more powerful machines might overwhelm this pipe size, leading to potential drainage issues.
  2. Local Plumbing Codes: Local building and plumbing codes significantly determine the minimum pipe size required for a washing machine. It’s essential to adhere to these codes to ensure proper drainage and prevent potential plumbing problems.
  3. Efficiency of Waste Removal: A larger waste pipe, such as 40mm or 50mm, is generally recommended for washing machines. This ensures efficient wastewater removal, reduces the risk of blockages, and prevents potential backups.
  4. Pipe Length and Slope: The length of the waste pipe and its slope can impact drainage efficiency. Longer pipe lengths and insufficient slopes could lead to drainage problems, even with larger pipe diameters.
  5. Professional Advice: Consulting a plumber or a plumbing expert is advisable before deciding. They can assess your situation and guide you on the appropriate waste pipe size for your washing machine.
Can You Use 32mm Waste for Washing Machine?

Pros and Cons of Using a 32mm Waste Pipe


  • Suitable for Smaller Washing Machines: One of the notable advantages of using a 32mm waste pipe is its suitability for smaller washing machines with lower water usage. These machines typically generate less wastewater during their cycles, making the 32mm pipe sufficient to handle the drainage needs. This can be particularly advantageous for compact living spaces or situations where a smaller washing machine is preferred.
  • Cost-Effective Solution: Opting for a 32mm waste pipe can be a cost-effective solution in certain scenarios. The smaller pipe diameter is generally less expensive, both in terms of materials and installation costs. For homeowners on a budget or those looking to minimize expenses, this can be an attractive option.


  • Risk of Drainage Issues: One of the primary drawbacks of using a 32mm waste pipe is the increased risk of drainage issues, especially when dealing with larger and more powerful washing machines. These machines generate a higher volume of wastewater, and a 32mm pipe might struggle to handle the rapid flow effectively. As a result, inadequate drainage can lead to water backing up, potential leaks, and decreased overall efficiency.
  • Potential for Blockages and Backups: The limited capacity of a 32mm waste pipe makes it more susceptible to blockages caused by lint, debris, and soap scum from the washing machine. Over time, these blockages can accumulate and hinder the flow of wastewater, resulting in backups. This not only disrupts the washing machine’s performance but can also lead to water damage and the need for frequent maintenance.

When Would You Use 32mm Waste?

There are many times when you might use 32mm of waste.

For example, if you’re doing a bathroom renovation and need to replace a toilet, you’ll need to buy 32mm waste fittings.

Or, if you have a sink with a detachable waste pipe, you’ll need to use a 32mm fitting to connect the two.

Finally, if you have an old-fashioned basin that doesn’t have a pop-up plug, you’ll also need a 32mm waste fitting to allow the water to drain away.

What Size Waste Pipe Do You Need for a Washing Machine?

The size of the waste pipe you need for your washing machine will depend on the model of the washing machine you have.

Most versions will come with a 1.5-inch asked diameter, which is the industry standard, but some premium models may require a larger 2-inch waste pipe.

You can easily find the right-sized waste pipe for your washing machine by searching online or consulting with a plumbing professional. When it comes to plumbing, one size does not fit all, and that goes double for waste pipes.

The last thing you want is for your brand-new washing machine to arrive only to discover that the waste pipe is incompatible.

To avoid any headaches or hiccups down the line, be sure to know the dimensions of both your washing machine and the waste pipe before making any decisions.

Are All Washing Machine Waste Pipes the Same Size?

No. Waste pipes vary in size, and you should always refer to your washing machine manufacturer’s instructions to ensure you are using the correct waste pipe size.

A washing machine with high water usage will require a larger waste pipe than a washing machine with lower water usage.

If the incorrect waste pipe size is used, the washer will not be able to drain properly and could overflow, damaging your property and creating an expensive repair bill.

It’s also important to ensure that the waste pipe slopes downwards towards the sewerage system so that water can drain away quickly and efficiently.


Can you use 32mm waste for washing machine? As explored, nuances abound in this matter, illuminating the considerations essential for well-informed decisions.

While conceivable in specific scenarios, employing a 32mm waste pipe for a washing machine is less than optimal. Factors like machine size, plumbing codes, and waste removal efficiency loom large.

Overall, I hope this article has helped you discover everything you need!