Gas Heater CO Leak
Singapore's trusted EMA-licensed specialists for detecting, diagnosing, and safely resolving gas water heater carbon monoxide leaks — with a full portfolio of verified replacement cases.
Never ignore a gas leak. CO is colourless and odourless. Get assistance if you need professional help for your gas heater.
Safety Warning
The Hidden Cause We See Most Often:
Heat Exchanger Leak → Obstructed Burner → CO
Most homeowners don't realise that a CO leak usually starts with a water leak inside the heater. Here's the failure chain our technicians find again and again during inspections.
The failure chain
OUR PORTFOLIO
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Gas heater CO leak: what
homeowners should know
Carbon monoxide is colourless and odourless, making it difficult to detect without proper checks. Learn the warning signs, possible causes, and why gas heater issues should be inspected safely.
HEALTH IMPACT
CO exposure levels explained
Carbon monoxide concentration in parts per million (PPM) and its effects on the body.
Normal air. No symptoms.
Mild headache after 1–2 hours of exposure.
Dizziness and nausea within 2–3 hours.
Life-threatening in 3 hours. Headache and nausea within 1–2 hours.
Seizures and unconsciousness in 45 mins. Fatal within 2–3 hours.
Rapid loss of consciousness. Can be fatal within hours.
Our Process
Homeone Safety Standard
When you book a CO inspection with us, we follow a strict compliance workflow — not a visual check, not a guess. Every step is documented, licensed, and accountable.
Gas Heater Carbon Monoxide (CO) Leak – FAQ
Understand the risks of carbon monoxide leaks, warning signs, and what to do if your gas heater is not operating safely.
What is a carbon monoxide (CO) leak from a gas heater?
A CO leak happens when combustion is not working properly and carbon monoxide may enter the surrounding area instead of being safely discharged.
Is carbon monoxide from a gas heater dangerous?
Yes. Carbon monoxide is colourless and odourless, so it can be difficult to detect without proper equipment.
What are the signs of a possible CO leak?
Warning signs may include unusual smells, poor flame condition, soot marks, poor heater performance, or repeated safety shutdowns.
What causes carbon monoxide issues in gas heaters?
Common causes include blocked exhaust, poor combustion, faulty internal components, poor ventilation, or an ageing gas heater.
What should I do if I suspect a CO issue?
Stop using the gas heater, ventilate the area safely, leave the area if needed, and arrange for a licensed gas professional to inspect it.
Can carbon monoxide issues be fixed or does the heater need replacement?
It depends on the condition of the heater and the cause of the issue. A proper inspection is needed before deciding on repair or replacement.
Who should check carbon monoxide issues in Singapore?
Gas heater CO-related issues should be checked by a trained technician under Licensed Gas Service Worker supervision.
Book a CO Inspection Today
Same-day bookings available (depends on slot availability). Our licensed team will inspect, test, and report — with no obligation to replace unless it's genuinely needed.