BVS Home Experts

HVAC Leak Sealer: Is It Effective?

When you have an issue with your HVAC system, you need our knowledgeable technicians to find a solution. Call BVS Home Experts today at (281) 609-3650.

When facing a simple air conditioning leak, a quick and easy fix from a hardware store seems tempting to most people. An HVAC leak sealer provides a simple solution. Most home improvement stores have them readily available for purchase. 

However, many people debate the product’s effectiveness. Are HVAC leak sealers worth it? Sugar Land’s HVAC experts outline how sealers work and whether they provide an effective solution for leaks in air conditioning units. 

What Does an HVAC Leak Sealer Do?

A leak sealer is a combination of ingredients formulated to fix minor leaks. Sometimes, HVAC systems develop small cracks or punctures. These breaches often remain unnoticed for their small size and lack of noticeable indicators. 

To use this product, you typically inject it into your system. As it circulates, it responds to moisture by forming a patch on the fractures. But how does moisture develop within the system?

The air outside and inside of the unit has different temperatures. Condensation forms when cooler air meets warm air. Therefore, condensation is common around leaks in fluctuating temperatures.

Varieties of HVAC Leak Sealers

HVAC leak sealers come in two forms: chemical-based and grain-based. Each sealer interacts with the system’s environment in a slightly different way. You can choose the one that will work best based on the information outlined below. 

Chemical-based HVAC Leak Sealers

Many homeowners often prefer chemical-based HVAC leak sealers. They provide a newer solution with more reliable capabilities. They also last longer than grain-based HVAC sealers while working better with modern systems.  

When you inject a chemical-based sealer into your refrigerant line, it easily flows through. Once the sealant encounters moisture triggered by the temperature difference, it reacts. When the moisture activates the sealant, the sealant creates a patch over the leak’s location. 

Grain-based HVAC Leak Sealers

Grain-based HVAC leak sealers (a.k.a. powder-based sealers) are an older, more outdated solution. They don’t work as effectively as chemical-based HVAC sealants. Though you can still find them on a hardware store’s shelves, they have become less popular with consumers. 

To use a grain-based sealer, you add it to the system per the product instructions. As it moves through the refrigerant line, it coats any small leaks with tiny grain fragments along the way. After the patch solidifies, the leak has a temporary fix. 

Grain-based sealers work best with unpressurized HVAC systems. However, this product won’t provide ideal results since most modern systems are pressurized. The particles could dislodge, leaving you with the same leaks. 

Additionally, grain-based sealers can cause obstructions in an HVAC system’s refrigerant lines. These obstructions occur when the product doesn’t properly adhere to the leak. It can also happen when the product dislodges. Therefore, you should use caution when using a grain-based product to avoid expensive repairs. 

Pros of HVAC Leak Sealers

Does an HVAC leak sealer have any advantages? Sealers come with some conveniences that can make them worth the purchase. You might want to consider purchasing an HVAC leak sealer for the following reasons:

  • Most products come with simple directions. 
  • Sealants usually cost about $20 a bottle, making them an inexpensive option. 
  • You can use them safely as long as you follow the instructions. 
  • You can avoid deconstructing your system to make a quick repair. 
  • You don’t have to refill the refrigerant.

Small leaks generally don’t pose an immediate threat to your HVAC system or home. Therefore, the DIY nature of sealant products makes them an attractive option. However, they do come with a few downsides as well. 

Cons of HVAC Leak Sealers

What hazards or problems do HVAC leak sealers pose? Despite providing a cheap, hassle-free solution, sealers come with several disadvantages. You should consider these while deciding whether to use them at all. 

  • First and foremost, leak sealers provide a temporary solution. 
  • They may not work comparably with O-rings and shaft seals.
  • They won’t mend larger leaks.
  • You must ensure you use the correct sealer for your HVAC system. 
  • Certain products can reduce your system’s energy efficiency and force it to work harder.
  • Grain-based HVAC leak sealers can clog your refrigerant lines and coils, leading to expensive repairs. 
  • While they can patch a leak, they don’t solve the problem. 

Use caution when purchasing HVAC leak sealers. Only use products that work with your system to avoid stressful repairs or permanent system damage. 

Do HVAC Leak Sealers Work?

Yes, HVAC leak sealers work when you want a quick temporary fix for small leaks. As long as you plan to get professional repairs in the near future, sealers provide an excellent solution. Just be sure to use a product that works well with your HVAC system. 

Unless you have a system with unpressurized lines, avoid grain-based sealers if possible. They could do more harm than good. Chemical-based products provide superior results. 

Regardless, do your research on any product before you purchase and use it in your home. Remember that larger leaks require immediate professional service. Tiny leaks will also require service eventually. 

Therefore, you should schedule an appointment with our HVAC service providers sooner than later. As a reliable HVAC company, we’ll get to the bottom of the issue with a permanent repair. 

Find Long-term Solutions to Leaks With BVS Home Experts

If you live in Sugar Land, TX, or surrounding areas, you have a group of home experts conveniently located nearby. If you’re ready for permanent solutions to large and small leaks, our experts have the experience, equipment, and knowledge to provide hassle-free service. At BVS Home Experts, we’re here for your comfort with reliable, comprehensive services. 

Skip the risks that come with most HVAC leak sealers. Call us at (281) 609-3650 to schedule an appointment today. No matter what time of day or night, we’ll be on the job within an hour of your call.

Author Bio:

Ronald Via

Ronald is one of the key contributors to BVS Home Experts, a family-owned and operated full-service air conditioning and heating company serving the Katy and West Houston areas. With a deep understanding of air conditioning and heating concerns, Ronald brings a wealth of knowledge to our readers.

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