---
product_id: 401625865
title: "ComStar Leak Bubbles Yellow HVAC & Gas Detector, Fastest-Acting Leak Detector in Today's Market - Safe, Non-Corrosive, Long-Lasting Bubbles, Detects Micro Leaks, Made in USA, 1 Quart Spray (90-204)"
brand: "comstar"
price: "€ 51.26"
currency: EUR
in_stock: true
reviews_count: 5
category: "Comstar"
url: https://www.desertcart.ie/products/401625865-comstar-leak-bubbles-yellow-hvac-and-gas-detector-fastest-acting
store_origin: IE
region: Ireland
---

# Fastest-acting detection Fluorescent yellow bubbles Won't freeze in cold temps ComStar Leak Bubbles Yellow HVAC & Gas Detector, Fastest-Acting Leak Detector in Today's Market - Safe, Non-Corrosive, Long-Lasting Bubbles, Detects Micro Leaks, Made in USA, 1 Quart Spray (90-204)

**Brand:** comstar
**Price:** € 51.26
**Availability:** ✅ In Stock

## Summary

> 🟡 Don’t just find leaks—spot them instantly and stay ahead of costly repairs!

## Quick Answers

- **What is this?** ComStar Leak Bubbles Yellow HVAC & Gas Detector, Fastest-Acting Leak Detector in Today's Market - Safe, Non-Corrosive, Long-Lasting Bubbles, Detects Micro Leaks, Made in USA, 1 Quart Spray (90-204) by comstar
- **How much does it cost?** € 51.26 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/401625865-comstar-leak-bubbles-yellow-hvac-and-gas-detector-fastest-acting)

## Best For

- comstar enthusiasts

## Why This Product

- Trusted comstar brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **All-Temperature Ready:** Formulated to perform flawlessly in extreme heat or freezing cold without losing effectiveness.
- • **Fluorescent Visibility:** Bright yellow bubbles glow under UV light for pinpoint accuracy, even on micro leaks.
- • **Instant Leak Detection:** See leaks bubble up in seconds with the fastest-acting formula on the market.
- • **Eco-Safe & Non-Corrosive:** Protect your equipment and the planet with a non-toxic, environmentally safe solution.
- • **Versatile Gas Compatibility:** Detects leaks in natural gas, refrigeration gases, nitrogen, air, and CO2—one spray for all.

## Overview

ComStar Leak Bubbles Yellow is a professional-grade HVAC and gas leak detector that produces long-lasting fluorescent yellow bubbles to reveal even the smallest micro leaks. It acts faster than competitors, works reliably in all temperatures without freezing, and is safe for both users and the environment. Ideal for detecting leaks in natural gas, refrigeration gases, nitrogen, air, and CO2, this 1-quart spray bottle is a must-have tool for precision leak detection and preventative maintenance.

## Description

ComStar’s Leak Bubbles Yellow is an HVAC and Gas Leak Detector that has set the standard for high-quality and fast-acting leak detectors in the market today! Leak Bubbles Yellow produces large, consistent bubbles. It leaves a long-lasting coating wherever a leak is detected and its fluorescent yellow color makes the leak easy to see under a fluorescent light. This product detects leaks in natural gas, refrigeration gas, nitrogen, air, and C02. Simply apply with the cap dauber and watch fast, even bubbles appear. Leak Bubbles Yellow is perfect for all types and sizes of leaks, even the smallest micro leaks. Leak Bubbles Yellow will not freeze and is perfectly formulated for both high and low-temperature applications and all types and sizes of leaks. Leak Bubbles Yellow is environmentally safe, non-toxic, and non-corrosive.

Review: I don't normally write reviews, but this was exceptional and warranted me taking the time to write one. I'm an independent owner operator of a 2020 Peterbilt 579, which is riddled with the ridiculous, cheap plastic push to connect fittings for the air brake system. I despise air leaks, and having to wait for my truck to build air pressure when I first crank it. My rule of thumb is if it can't hold at least 100lbs of air pressure for 3 days then the system needs attention. This is a tight standard by most. For years I have depended on soapy water solution and have even tried adding corn syrup. Now that I have found this, I will never use soapy water for anything other than finding tire air leaks. This stuff is hands down the most efficient solution I've come across. Within 15 minutes of opening the bottle I had located 5 air leaks on my truck that soapy water didn't reveal. It might be pricey compared to the alternative, but way more effective. I hope this saves another trucker like me some headaches. Way more important things to worry over than an air leak.
Review: Sure, soapy water will detect leaks, but let me tell you, this product will find leaks that soapy water will miss. I had the opportunity to use this on my tire valves, and I discovered a minuscule air leak that didn't show up at all using soapy water. This product is fantastic; it detects virtually any kind of leak, and does so extremely well. Had I used soapy water instead of this product, I would never have known that one of my tires was slowly leaking air. The leak was so small that it required that I use a magnifying glass to see the escaping bubbles. With that said, although the leak was about as tiny as you could possibly get, it would have resulted in one of my tires losing a substantial amount of air over time. This stuff isn't cheap, but it is most certainly effective. Simply spray the area in question, and look for bubbles to form. You can either use the spray or stream mode. When I used the spray mode, I didn't see the tiny bubbles escaping from my tire. When I used the stream mode and a magnifying glass, the leaky bubbles became apparent. I consider this money well spent. It's a step up from using soapy dish water, and the convenient spray bottle will last a very long time.

## Features

- Leak Bubbles Yellow is fastest acting leak detector in today's market
- Environmentally safe, non-toxic, and non-corrosive
- Detects leaks in natural gas, refrigeration gas, nitrogen, air and C02
- Leak Bubbles Yellow will not freeze
- Creates long-lasting bubbles and detects micro leaks

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01DBAC864 |
| ASIN  | B01DBAC864 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #54,131 in Automotive ( See Top 100 in Automotive ) #25 in Automotive Fuel Leak Detectors |
| Color | Yellow |
| Customer Reviews | 4.5 4.5 out of 5 stars (457) |
| Customer reviews | 4.5 4.5 out of 5 stars (457) |
| Date First Available | 7 May 2016 |
| Date First Available  | 7 May 2016 |
| Included components | Spray dispensing head, clear bottle |
| Item Package Quantity | 1 |
| Item Weight | 907 g |
| Item model number | 90-204 |
| Item model number  | 90-204 |
| Manufacturer | ComStar International Inc. |
| Manufacturer  | ComStar International Inc. |
| Material | Spray |
| Part number | 90-204 |
| Power source type | Battery Powered |
| Product Dimensions | 10.16 x 7.62 x 30.48 cm; 907.18 g |
| Product Dimensions  | 10.16 x 7.62 x 30.48 cm; 907.18 g |
| Shape | Cylinder |
| Size | 1 Quart |
| Style | Spray |

## Product Details

- **Brand:** Comstar
- **Colour:** Yellow
- **Power source:** Battery Powered
- **Product dimensions:** 30.5D x 8.3W x 8.3H centimeters
- **Style:** Spray

## Images

![ComStar Leak Bubbles Yellow HVAC & Gas Detector, Fastest-Acting Leak Detector in Today's Market - Safe, Non-Corrosive, Long-Lasting Bubbles, Detects Micro Leaks, Made in USA, 1 Quart Spray (90-204) - Image 1](https://m.media-amazon.com/images/I/61vxtIvQAQL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by K***T on 14 September 2024*

I don't normally write reviews, but this was exceptional and warranted me taking the time to write one. I'm an independent owner operator of a 2020 Peterbilt 579, which is riddled with the ridiculous, cheap plastic push to connect fittings for the air brake system. I despise air leaks, and having to wait for my truck to build air pressure when I first crank it. My rule of thumb is if it can't hold at least 100lbs of air pressure for 3 days then the system needs attention. This is a tight standard by most. For years I have depended on soapy water solution and have even tried adding corn syrup. Now that I have found this, I will never use soapy water for anything other than finding tire air leaks. This stuff is hands down the most efficient solution I've come across. Within 15 minutes of opening the bottle I had located 5 air leaks on my truck that soapy water didn't reveal. It might be pricey compared to the alternative, but way more effective. I hope this saves another trucker like me some headaches. Way more important things to worry over than an air leak.

### ⭐⭐⭐⭐⭐ Review
*by E***S on 20 October 2016*

Sure, soapy water will detect leaks, but let me tell you, this product will find leaks that soapy water will miss. I had the opportunity to use this on my tire valves, and I discovered a minuscule air leak that didn't show up at all using soapy water. This product is fantastic; it detects virtually any kind of leak, and does so extremely well. Had I used soapy water instead of this product, I would never have known that one of my tires was slowly leaking air. The leak was so small that it required that I use a magnifying glass to see the escaping bubbles. With that said, although the leak was about as tiny as you could possibly get, it would have resulted in one of my tires losing a substantial amount of air over time. This stuff isn't cheap, but it is most certainly effective. Simply spray the area in question, and look for bubbles to form. You can either use the spray or stream mode. When I used the spray mode, I didn't see the tiny bubbles escaping from my tire. When I used the stream mode and a magnifying glass, the leaky bubbles became apparent. I consider this money well spent. It's a step up from using soapy dish water, and the convenient spray bottle will last a very long time.

### ⭐⭐⭐⭐⭐ Review
*by N***O on 28 December 2025*

Really finds a leak. Just that much better than just soap and water.

## Frequently Bought Together

- ComStar Leak Bubbles Yellow HVAC & Gas Detector, Fastest-Acting Leak Detector in Today's Market - Safe, Non-Corrosive, Long-Lasting Bubbles, Detects Micro Leaks, Made in USA, 1 Quart Spray (90-204)
- Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack)
- Refrigeration Technologies RT175B Big Blu Brush On MicroLeak Detector Blue

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---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-18*