When it comes to maintaining your portable air conditioner, having the right drain plug is essential to prevent leaks and ensure efficient operation. These plugs block the drainage holes, stopping condensate water from dripping and causing damage or mold. Below is a comparison table summarizing some highly recommended drain plugs designed for various portable AC models, emphasizing durability, ease of installation, and compatibility.
| Product Name | Brand | Features | Compatibility |
|---|---|---|---|
| 20MM (0.78IN) Hole Plug – 5 Pieces | GKZKNG | Durable rubber, strong sealing, round head for easy install | Mini Split Window AC Outdoor Units |
| AC Upper Drain Cap & Plug for Toshiba RAC-PD1013CWRU | Lazellz | Includes plug & twist cap, fits back drain of appliance | Toshiba AC Models RAC-PD1013CWRU, RAC-PD1211CRU |
| 10pcs Round Rubber Hole Plug Set | DOITOOL | Prevents water damage, hole sealing for outdoor units | Universal for AC and other drain/plug needs |
| AC Upper Drain Cap & Plug for Toshiba RAC-PD1213CWRU | Lazellz | Plug & twist on cap, fits back drain | Toshiba RAC-PD1213CWRU, RAC-PT1411HWRU |
| AC Lower Drain Stopper for Toshiba RAC-PD1411HRU | Lazellz | One lower drain stopper, model-specific fit | Toshiba RAC-PD1411HRU |
Content Navigation
- 20MM (0.78IN) Hole Plug By GKZKNG
- AC Upper Drain Cap & Plug Compatible with Toshiba RAC-PD1013CWRU by Lazellz
- 10pcs Round Rubber Hole Plug Set by DOITOOL
- AC Upper Drain Cap & Plug Compatible with Toshiba RAC-PD1213CWRU by Lazellz
- AC Lower Drain Stopper Compatible with Toshiba RAC-PD1411HRU by Lazellz
- Buying Guide for Portable Air Conditioner Drain Plugs
20MM (0.78IN) Hole Plug By GKZKNG

This 20MM Hole Plug by GKZKNG is crafted from durable rubber for excellent longevity and strong sealing. It is specifically designed for the condensate drain holes on mini split window air conditioner outdoor units. The plug’s round head allows for easy installation and ensures it stays securely in place to effectively block water drainage and prevent leaks or drips. A pack of five plugs offers multiple replacements or backups, making it suitable for ongoing maintenance or multiple units.
AC Upper Drain Cap & Plug Compatible with Toshiba RAC-PD1013CWRU by Lazellz

The Lazellz AC Upper Drain Cap and Plug fits Toshiba portable ACs, especially models RAC-PD1013CWRU and RAC-PD1211CRU. This kit includes both the plug and a twist-on cap designed to seal the drain located at the back of the unit effectively. It provides an airtight closure to prevent condensate leakage, helping maintain unit efficiency. Installation follows the original user manual instructions, as no printed guide comes with the part. This plug is model-specific, ensuring an optimal fit.
10pcs Round Rubber Hole Plug Set by DOITOOL

The DOITOOL 10-piece set includes durable rubber hole plugs designed for various uses such as air conditioner condensate drainage plugs or for sealing other holes. These plugs help prevent damage caused by water drips, particularly in portable AC outdoor units. Their compact and sturdy build offers years of reliable water sealing performance. This set is a versatile solution for AC maintenance and other household sealing needs, making it a practical choice for those seeking multiple plugs.
AC Upper Drain Cap & Plug Compatible with Toshiba RAC-PD1213CWRU by Lazellz

This drain plug by Lazellz is designed for compatibility with Toshiba models RAC-PD1213CWRU and RAC-PT1411HWRU. It includes both the plug and a twist-on cap intended for sealing the upper drain hole on the back of the AC unit. Like other Lazellz products, it requires following the manufacturer’s user manual for installation. This plug plays a crucial role in managing condensate flow and preventing leaks, ensuring the longevity of your portable AC.
AC Lower Drain Stopper Compatible with Toshiba RAC-PD1411HRU by Lazellz

The Lazellz lower drain stopper is built specifically for the Toshiba model RAC-PD1411HRU. This one-piece plug fits securely into the lower drain hole located on portable air conditioners’ outdoor units. It prevents condensate leakage effectively, ensuring your unit does not drip water on the ground or surrounding surfaces. As with other Lazellz plugs, installation instructions are included in the parent AC’s user manual, requiring correct adherence for optimal results.
Buying Guide for Portable Air Conditioner Drain Plugs
Choosing the right portable air conditioner drain plug depends on several factors to ensure effective condensate control and product longevity:
1. Model Compatibility
Always verify that the drain plug matches your AC unit’s model number. Many plugs are designed specifically for certain brands like Toshiba or Delonghi. Using a model-specific plug ensures a precise fit and reliable seal, preventing leaks effectively.
2. Material Durability
Rubber plugs are commonly preferred because of their elasticity and strong sealing capabilities. Look for high-quality, weather-resistant rubber that can withstand outdoor conditions and not degrade quickly.
3. Installation Ease
The plug should be easy to insert and remain securely in place. Designs with round heads or twist-on caps provide convenient installation, reducing the need for tools or expert assistance. Check if installation instructions are provided or if you need to consult your air conditioner manual.
4. Purpose and Location of the Drain
Some units have both upper and lower drain holes, so determine which plug you need (upper, lower, or universal). Proper plug placement prevents condensate water from dripping onto surfaces, protecting both the unit and surrounding areas.
5. Quantity and Replacement
Consider purchasing multi-piece sets if you have several units or want spares. Having extra plugs on hand can simplify future maintenance and replacements.
6. Sealing Performance
A plug’s ability to maintain an airtight and watertight seal is crucial. This inhibits any seepage of condensate and safeguards against water damage or mold growth around your portable AC.
Careful selection of your portable AC drain plug ensures efficient moisture management and can extend the lifespan of your air conditioning unit. Always verify product reviews and manufacturer details when making your final decision.