Finding the right double inlet blower wheel depends on application, size, and mounting compatibility. This guide highlights five common options, keyed for ease of selection by compatibility, airflow needs, and space constraints. The top picks are best for residential HVAC retrofits, light commercial systems, and compact blowers. Each product section explains who benefits most, why it was selected, and a practical limitation to consider. A quick buying table helps compare core specs at a glance.
| Product | Bore | Diameter | Rotation |
|---|---|---|---|
| 2-6011, Double Inlet Blower Wheel | 1/2 inch | 7 inches | CW |
| 2-6030, Double Inlet Blower Wheel | 1/2 inch | 6 7/8 inches | CW |
| Revcor 6 1/4 X 4 X 5/8 Aluminum Double Inlet | 5/8 inch | 6 1/4 inches | CW |
| 5-3/4″ X 8″ Direct Drive Double Inlet | 1/2 inch | 5-3/4 inches | CCW |
| Lau 5 3/4 X 5 7/8 X 1/2 Aluminum Double Inlet | 1/2 inch | 5 3/4 inches | CW |
2-6011 Double Inlet Blower Wheel — 7″ CW
Best for: Small to mid-size blowers needing CW rotation and a 1/2 inch bore. This wheel is suitable for compact HVAC retrofits where a direct match to a 7″ diameter is preferred. Selected for its CW direction and standard bore, aiding straightforward swaps in compatible housings.
Why chosen: The 2-6011 offers a familiar 7″ dimension and CW rotation, aligning with common blower assemblies. It fits Fasco-compatible models and is easy to source for replacements.
Caution: Confirm hub geometry and mounting clearance to ensure no interference with adjacent components.
2-6030 Double Inlet Wheel — 6 7/8″ CW
Best for: Systems needing a compact wheel with a 6 7/8″ diameter and CW rotation for balanced airflow in tight spaces. Ideal for cabinets or small plenums where a slightly smaller wheel improves fit.
Why chosen: The 2-6030 provides a close alternative to the 7″ option while maintaining CW rotation and a 1/2″ bore, aiding compatibility with common shafts.
Caution: Check exact clearance under blower housing to confirm sufficient radial space for blade tips.
Revcor 6 1/4 X 4 X 5/8 Aluminum Double Inlet
Best for: Applications requiring an aluminum double inlet wheel with a larger diameter and robust construction. Suitable for light industrial or HVAC systems that demand durability and efficiency.
Why chosen: The aluminum construction adds corrosion resistance and rigidity, while the 6 1/4″ diameter delivers higher airflow potential in compatible housings.
Caution: Verify the exact bore and mounting specifics; this model lists a 5/8″ bore which may affect shaft compatibility in some units.
5-3/4″ X 8″ Direct Drive Double Inlet
Best for: Direct-drive setups needing a larger 5-3/4″ diameter and 1/2″ bore, with CCW rotation. This option suits retrofit projects where direct drive eliminates belt-driven losses.
Why chosen: It offers a larger diameter that can move more air in compatible direct-drive configurations, beneficial where space permits longer blower housings.
Caution: Direct-drive arrangements require exact pulley and shaft matching; misalignment can impact performance.
Lau 5 3/4 X 5 7/8 X 1/2 Aluminum Double Inlet
Best for: Aluminum double inlet wheels with a slightly taller profile and CW rotation are well-suited for systems needing durable, corrosion-resistant components in moderate airflow paths.
Why chosen: Aluminum construction provides longevity in humid or mildly corrosive environments, with a compact 5 3/4″ diameter and 1/2″ bore for common shafts.
Caution: Check overall wheel height (5 7/8″) to ensure clearance within the blower cabinet or plenum.
Buying Guide
- What is the bore size you need? Most wheels here use a 1/2 inch bore. Confirm shaft compatibility before purchasing.
- Which rotation direction do you require? CW and CCW options affect how the wheel mates with the motor and housing.
- What diameter fits your blower housing? Measure available space to avoid interference with ductwork or mounting brackets.
- Material choice matters. Aluminum wheels offer corrosion resistance; steel wheels may be stronger but heavier.
- Direct-drive versus belt-driven. Direct-drive wheels simplify layout but require precise alignment and shaft matching.
- Durability and environment. For humid or industrial settings, aluminum or coated wheels reduce corrosion risks.
Frequently Asked Questions
- What is a double inlet blower wheel?
A double inlet blower wheel is a centrifugal wheel with two intake sides that improves airflow at lower speeds and reduces noise for certain HVAC and blower applications. - How do I choose the right diameter?
Match the wheel diameter to your blower housing’s inlet size and available space to ensure proper airflow and fit. - Is 1/2″ bore standard?
Yes, many wheels use a 1/2″ bore, but verify your shaft and hub requirements before purchasing. - Should I choose CW or CCW rotation?
Choose the rotation direction that matches your blower motor’s orientation and the housing design to avoid misalignment. - Are aluminum wheels better than steel?
Aluminum offers corrosion resistance and lighter weight, which can be advantageous in humid or corrosive environments. - Can I retrofit any blower with a new wheel?
Retrofit depends on shaft diameter, bore, and mounting compatibility; verify all dimensions against the original component.
