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Gas Leak Near Your HVAC? How to Detect It and What to Do

Gas Leak Near Your HVAC? How to Detect It and What to Do

A gas leak from an HVAC system is a critical emergency that requires immediate attention. If it is unaddressed, it can cause serious health concerns and also lead to equipment failure. The concerning part is that most of the New Jersey business owners don’t know how to handle the situation if a gas leakage situation occurs. They call their nearby technicians and end up with heavy property loss until the technician arrives.

In many other scenarios, customers are not sure whether the issue they are encountering is actually due to gas leakage or something else. This is where they are at risk of heavy damage ahead. In this blog, we will guide you on how to detect HVAC gas leakage and what to do before the technician arrives so both your property and staff stay safe.

How to Detect a Gas Leak Near Your HVAC System

Detecting an HVAC gas leak can be tricky. But with the right equipment and the right strategy, you can confirm it yourself and take the appropriate measures instantly. Here’s how to detect it.

1. Smell the Odor

Natural gas is odorless itself. But HVAC companies add mercaptan to it so it can be smelled and detected immediately. Natural gas smells like a rotten egg or sulfur when used with this mercaptan. If you notice such smells in your commercial place, evacuate the facility immediately and call your local technicians.

2. Listen for Hissing Sounds

Natural gas creates hissing sounds when it escapes. Especially when it escapes through very fine, narrow cracks, such sounds are easily detected. If you hear any sounds from your HVAC system resembling this pattern, there is potential leakage of the natural gas.

3. Look for Visual Signs

Multiple visual signs indicate there is a gas leak. Some of those visual signs are mentioned here.

  • Bubbling in gas line connections
  • Dead vegetation or dry spots near outdoor gas lines
  • Dust blowing from a damaged gas line
  • Visible damage to gas pipes (cracks, corrosion)

If you notice some of these signs, you are likely having gas leakage issues.

4. Use Detection Equipment

Using gas leakage detection equipment is the best and safest method to detect such leaks at initial stages. But most of the business facilities lack this equipment. It is better if you purchase them and keep them at your office or business place, so you can easily detect and confirm leakage problems.

The following is some equipment used in these scenarios.

  • Electronic leak detectors (e.g., Fieldpiece) for initial system scans
  • Bubble test or soapy water/microleak solution on orifices for large leaks
  • Professional gas leak detection equipment for commercial systems

5. Monitor Building Symptoms

HVAC gas leakage is associated with multiple other signs and symptoms. You have to keep a close eye on those symptoms and understand whether it is a leakage problem just with those associated unusual patterns.

  • Unexplained health issues: headaches, nausea, dizziness among staff
  • Flame color change: gas burners should be blue; yellow/orange indicates problems
  • Higher gas bills without increased usage

What to Do If You Detect a Gas Leak

Once you are sure that there is genuinely a gas leakage issue at your commercial facility, every single minute is important. Here are the immediate steps you should take soon after detecting the gas leakage. The steps are recommended by professional technicians of Lehigh HVAC after spending 11 years servicing various HVAC systems.

  1. Evacuate everyone from the building immediately
  2. Move 350 feet away from the structure
  3. Do not operate electrical devices, light switches, or phones inside
  4. If safe, open windows/doors to let gas escape (only if you can do this quickly while exiting)
  5. Do not shut off gas yourself unless trained and it's safe to do so
  6. Call your local HVAC technicians immediately. You can also call 911 or 1-800-880-PSEG (7734) for urgent assistance.
  7. Do not re-enter until emergency personnel or the utility company clears the area

Closing Lines

Gas leaks near your HVAC are extremely dangerous HVAC issues. Detecting it immediately and taking prompt action are required to ensure the safety of your equipment and employees/customers. With an expert who arrives immediately, you are on the safe side. You can call Lehigh HVAC in such emergency scenarios to get professional assistance immediately. Call us at 848-361-4707 for emergency service.

Frequently Asked Questions:

Signs of a gas leak near an HVAC system include a rotten egg or sulfur smell, hissing sounds near gas lines, and unusually dry or damaged spots around outdoor gas connections.

Immediately stop all activity, evacuate the building, avoid using electrical switches or appliances, and call emergency HVAC or gas professionals from a safe distance.

Only attempt to shut off the gas valve if it is safely accessible outside and you are confident doing so. Avoid any action that could create a spark or put you at risk.

Temperature fluctuations in New Jersey can cause gas pipes to expand and contract, which may loosen older fittings and joints, eventually leading to leaks.

Schedule annual HVAC inspections to check all gas connections, identify corrosion early, and repair any issues before they turn into dangerous gas leaks.