Answering the question: which AC motor fan blade is best for replacing damaged blades in an RV or home condenser system? This guide highlights top practical choices, tailored for different buyers—from RV owners upgrading a Brisk Air unit to HVAC hobbyists seeking universal compatibility. The top picks cover Dometic Brisk/Duo-Therm compatibility, universal 2-wing designs, and durable replacement blades. See the quick table below for a at-a-glance comparison of the chosen products.
| Product | Brand | Why It’s Notable |
|---|---|---|
| 3313107.015 Fan Blade for Dometic | JIANBENKJ | Best for Dometic Brisk Air/ Duo-Therm units |
| PIHIL 3313107.015 Rv Fan Blade | PIHIL | Wide compatibility with Brisk series, reliable replacement |
| B1086748S – Goodman Replacement Condenser Fan Blade | Goodman | Good for 3-blade, 18–22 inch setups |
| B1086756 – Goodman Replacement Condenser Fan Blade | Goodman | Another 3-blade option for mid-size condensers |
| Universal Condenser Motor Fan Blade 2 Wing x 18″ | NAHVAC | Best for universal, 2-wing needs |
3313107.015 Fan Blade for Dometic AC Brisk Air
Best for: Dometic Brisk Air and Duo-Therm RV units. This blade is marketed as a direct replacement for multiple Dometic model numbers, with a 10-1/2″ diameter and a 3″ thickness. The shaft is a D-shaped 1/2″ hole, aligning with standard Dometic motor shafts. Use this when your RV AC unit is labeled Brisk Air or Duo-Therm Brisk Air heat pump series.
Why chosen: It directly matches the commonly replaced part numbers (3313107.015, 317937.000, 3107914.008) and is dimensionally consistent with Dometic condenser fans. Caution: verify the shaft shape and mounting alignment on your exact model to avoid fit issues.
PIHIL 3313107.015 Rv Air Conditioner Fan Blade
Best for: Dometic Brisk and Duo-Therm lines, especially when a direct 3313107.015 replacement is needed. This PIHIL blade emphasizes wide compatibility with the same Brisk air conditioner and heat pump models listed for other 3313107.015 replacements.
Why chosen: The listing reiterates compatibility with a broad Brisk/Duo-Therm range and confirms the same dimensional specs (10-1/2″ diameter, 3″ thick, D-shaped shaft). Limitation: Limited non-Dometic compatibility is expected; verify motor shaft geometry before ordering.
B1086748S – Goodman Replacement Condenser Fan Blade
Best for: Goodman condensers with a 3-blade configuration. This blade is described as brand-new and designed as a direct replacement for Goodman units where a 3-blade design is standard.
Why chosen: It provides a simple, compatible option for Goodman-brand condensers that use a similar blade format. Caution: verify blade count and bolt hole spacing on your unit to ensure compatibility with the 3-blade design.
B1086756 – Goodman Replacement Condenser Fan Blade – 3 x 18″
Best for: Medium-sized Goodman condenser units requiring an 18″ blade, 3 blades, and CCW rotation. This option complements the B1086748S family for different size requirements.
Why chosen: It expands replacement coverage within Goodman’s blade lineup, helping users avoid mismatched blade geometry. Limitation: Check exact blade diameter and rotation direction on your model to confirm fit.
Universal Condenser Motor Fan Blade 2 Wing x 18″
Best for: Systems needing a universal 2-wing blade, especially when original part numbers aren’t available. This can cover several non-OEM condenser configurations.
Why chosen: The 2-wing design is common in many 18″ to 20″ condensers, offering a potential plug-and-play option when exact model matches are scarce. Caution: Universal blades may have slight variances in bolt pattern and shaft size; confirm before purchase.
Rrina Motor Fan Blade 5in/125mm
Best for: Smaller motor fans, typically used in compact HVAC or appliance motors. The blade is 5 inches in diameter with 10 vanes for balanced airflow. The spindle accommodates a range of shaft diameters.
Why chosen: Useful when a small-diameter blade is required or when a non-standard motor is present. Limitation: Not suitable for larger condenser fans; mismatched dimension can cause fitment issues.
Condenser Fan Blade – 3 x 20″ CCW
Best for: Goodman 3-blade, 20″ condenser configurations in CCW rotation. This blade supports core replacement needs for larger A/C systems.
Why chosen: It fills a niche for 3-blade, 20″ units within the Goodman lineup. Caution: Confirm rotation direction and blade-bolt alignment on your model before installing.
Buying Guide
What matters when choosing an AC motor fan blade? Start with compatibility: confirm the blade diameter, thickness, shaft hole shape, and bolt pattern for your condenser or RV unit. Consider blade count and rotation direction (CW vs CCW) since mismatches prevent proper airflow and can cause motor stress.
- Direct replacement vs. universal: Direct OEM replacements minimize fit issues, while universal blades can fill gaps when exact models aren’t available.
- Material and durability: Solid plastics or composite blades resist cracks and fatigue in RV and outdoor installations.
- Dimension checks: Ensure 10-1/2″ diameter and 3″ thickness align with your unit’s housing. The shaft hole is frequently D-shaped; match to your motor shaft.
- Rotation direction: Confirm if your system uses CW or CCW blades, and select accordingly to avoid reversed airflow.
- Installation notes: Some blades require separate hardware or spacers; verify mounting compatibility and torque specs.
Frequently Asked Questions
- What blade size do I need for a Dometic Brisk Air unit?
- Is a universal condenser fan blade safe for my system?
- How can I tell if my blade is 3-blade or 2-blade?
- What if the blade doesn’t fit after installation?
- Are OEM blades always best?
- Do blades affect energy efficiency?
Look for blades with a 10-1/2″ diameter and a 3″ thickness, with a D-shaped 1/2″ shaft hole to match the common Dometic motor shaft.
Universal blades can work when an exact replacement isn’t available, but confirm blade count, diameter, shaft hole, and rotation direction to ensure compatibility.
Count the blades from the hub. Some large condensers use 3 blades for efficiency; smaller units may use 2 blades.
Double-check the shaft diameter and hole shape, mounting holes, and clearance within the condenser housing. Return or consult the seller if measurements don’t align.
OEM blades offer guaranteed fit, but high-quality aftermarket blades often match compatibility at a lower cost. Verify dimensional specs and warranty terms with the vendor.
Yes. Properly balanced blades reduce motor load and vibration, potentially improving efficiency and extending motor life.