02/20/2026
Attic Fan Replacement – Fire Loss Project
15” Attic Fan Upgrade
On fire loss projects, attic ventilation is extremely important. When insulation, wiring, or structural components are affected by heat and smoke, proper airflow helps regulate temperature, remove trapped moisture, and protect newly installed electrical systems.
Why attic fans are important
1. Heat reduction
Attics in Southern California can easily reach 130–160°F during summer. Excess heat transfers into living spaces, overworks HVAC systems, and shortens the life of roofing materials.
2. Moisture control
Moisture buildup leads to mold, wood rot, and insulation damage. After a fire loss—especially when water was used for suppression—proper ventilation helps dry out the structure.
3. Electrical protection
High attic temperatures can degrade insulation on conductors over time. Proper ventilation supports longevity of new wiring during rewires and restorations.
4. Roof lifespan
Ventilation reduces shingle blistering and premature roof aging caused by extreme heat buildup.
How to determine the correct attic fan size
Fan sizing is based on attic square footage and required CFM (cubic feet per minute).
General rule of thumb:
You need 1 CFM per square foot of attic area.
Example:
• 1,500 sq ft attic = 1,500 CFM fan
• 2,000 sq ft attic = 2,000 CFM fan
Also consider:
• Roof pitch (steeper roofs hold more volume)
• Existing passive ventilation (ridge vents, soffit vents, gable vents)
• Climate zone
• Insulation levels
• Fire restoration conditions (heat and moisture exposure)
A standard 15-inch attic fan typically moves between 1,200–1,600 CFM depending on model and RPM. This works well for many mid-size residential homes but must be verified against actual attic square footage.
Best practice during replacement:
• Verify proper power source (dedicated circuit if required)
• Install thermostat/humidistat control
• Confirm adequate intake ventilation (soffit vents must balance exhaust)
• Seal and weatherproof roof pe*******on
• Inspect attic wiring during fire loss repairs
At 1ST Touch Electric, attic fan replacements during fire restoration often include inspecting attic wiring for heat damage, brittle insulation, or compromised junction boxes.
If your attic fan failed during a fire loss, it is critical to replace it properly—not just swap the motor, but confirm correct sizing and airflow balance.
For professional attic fan replacement, rewires, and residential electrical restoration:
1ST Touch Electric
License #1004943
Phone: 714-865-0430
Email: [email protected]
Serving Orange County and surrounding areas.
Stay safe out there, Sparky’s.
Hashtags
