Yes, strong winds can extinguish the pilot light on a water heater, especially if the venting is inadequate or improperly installed.
Yes, wind can absolutely blow out your water heater’s pilot light. This common issue occurs when strong gusts travel down the vent pipe, disrupting the delicate flame. While occasional outages happen, frequent problems signal installation issues needing attention.
How Wind Extinguishes Pilot Lights
Wind interacts with your roof like air over an airplane wing – accelerating as it passes over the surface. This creates low pressure that can suck air down vent pipes with surprising force. The phenomenon is particularly common in:
- Mobile homes with roof-mounted vents
- Homes in windy regions
- Structures with vents near roof edges
The Physics Behind Wind-Related Outages
When wind speeds exceed 20-25 mph, the pressure differential becomes strong enough to disrupt pilot flames. The effect intensifies when:
- Vent pipes are too short
- Roof pitch creates turbulent airflow
- Nearby structures create wind tunnels
Dangerous “Solutions” to Avoid
Some homeowners attempt quick fixes that create serious hazards:
| Bad Solution | Why It’s Dangerous |
|---|---|
| Installing vent screens | Can ice over and block exhaust gases |
| Sealing combustion air vents | Creates carbon monoxide risk |
| Using unvented heaters | Directly introduces CO into living space |
Effective Windproofing Solutions
Vent Pipe Extensions
Adding 12-24 inches to your vent pipe moves the exit point above the turbulent airflow zone. This is the most reliable permanent solution. For proper installation:
- Use manufacturer-approved extensions
- Maintain proper clearances from roof
- Secure with storm collars
Consider a high-wind vent cap designed to deflect gusts while allowing proper exhaust flow.
Pilot Relighters
Automatic relight systems like the Robertshaw 785-001 can restore the flame within seconds of an outage. These require:
- Electrical connection
- Proper thermocouple alignment
- Professional installation
Mobile Home Specific Considerations
Manufactured homes face unique challenges due to their construction. Key requirements include:
- Combustion air vents within 12″ of floor and ceiling
- 1 sq. inch vent area per 4,000 BTU input
- Proper skirting to prevent wind tunnels
The Suburban SW6DEL water heater is a popular choice for mobile homes with wind-related pilot issues.
When to Call a Professional
Seek expert help if you notice:
- Frequent outages in calm weather
- Yellow or flickering burner flames
- Soot buildup around the burner
- Unusual odors when the heater runs
These may indicate more serious issues like:
- Vent blockages
- Gas pressure problems
- Thermocouple failure
- Improper combustion air supply
Carbon Monoxide Safety
Every home with gas appliances needs:
- UL-listed CO detectors near sleeping areas
- Annual professional inspections
- Immediate attention to alarm activations
Consider upgrading to pilotless ignition systems for improved reliability and safety.
