Answering the question “which blower motor mounting kit should I choose?” this guide highlights the best-fitting 5.5″ and 5″ diameter motor brackets designed to reduce vibration and noise while easing installation. These kits are ideal for homeowners repairing or upgrading furnace blowers, DIY enthusiasts, and HVAC professionals seeking reliable torsion-flex or multi-arm mounting. The top picks emphasize vibration isolation, simple clamping to motor shells, and compatibility with common bolt circles. Below, you’ll find a quick product snapshot table and detailed sections to help you compare merits and limitations at a glance.
Product comparison snapshot
| Product | |||
|---|---|---|---|
| Diversitech Packard 5.5″ Torsion Flex Motor Bracket | 5.5″ | 3-Leg Torsion-Flex | Noise reduction for 5.5″ direct-drive motors |
| SeDeplacer 5.5″ Blower 3 Leg Belly Band Bracket | 5.5″ | Three-leg belt/strap style | Stable support with included grommets/eyelets |
| Motor Mounting Bracket 5-5/8 Dia 4 Leg | 5-5/8″ | 4-Leg torsion flex | Even load distribution on larger motors |
| HQLDMYGS Motor Torsion Mounting Bracket 4 Arm | Up to 5-5/8″ | 4-Arm torsion | Carrier-compatible installations |
| Fasco FM55 Fas Mount Bracket Kit | 5.5″ | Flexible bracket with grommets/eyelets | Direct-drive, simple hardware package |
Diversitech Packard 5.5″ Torsion Flex Bracket
This 5.5″ torsion-flex motor bracket is designed to isolate torsional vibrations and prevent noise from transferring to the blower housing. The three-leg configuration offers balanced support with 120-degree spacing, and it clamps directly to the motor shell with no preassembly. A key benefit is the option for either a 10 1/4″ or 9 1/8″ bolt circle, increasing compatibility with a range of direct-drive blowers. Best for installers seeking strong vibration isolation and straightforward mounting, especially on 5.5″ motors.
Best for: HVAC technicians and DIYers prioritizing vibration control and simple clamp-on installation. Choose this if you need robust torsion isolation without extra hardware assembly. Caution: ensure bolt circle matches your motor to avoid fit issues.
SeDeplacer 5.5″ Blower Belly Band Bracket
This three-leg belly band bracket is compatible with 5.5″ direct-drive blower motors FM55 and MB55. It includes three grommets and three eyelets for a secure mount. The design emphasizes stable support, reducing motor movement that can translate into operating noise. This option is better for installations where a belt-like, three-point support is preferred for even load distribution.
Best for: Applications needing extra strap-style support and a simple four-piece kit. Consider this when you want included mounting hardware for faster setup. Caution: the three-leg design may not suit every 5.5″ motor bolt pattern—verify compatibility before ordering.
Motor Mounting Bracket 5-5/8 Dia 4 Leg
Designed for motors with a 5-5/8 inch diameter, this four-leg torsion-flex bracket provides balanced stability and even load distribution. The kit is suitable for direct-drive setups where four-point support is desired, helping minimize vibration transmission to the blower housing. This option offers a straightforward clamp-on approach similar to other two- or three-arm designs but with added rigidity for heavier motors.
Best for: Users with larger 5-5/8″ motors seeking four-point stability. Limitation: ensure the motor bore and bolt circle align with the bracket’s four-leg arrangement.
HQLDMYGS Motor Torsion Mounting Bracket 4 Arm
The HQLDMYGS four-arm torsion mounting bracket is designed to fit Carrier-blower furnace applications and accepts motors up to 5-5/8″ in diameter. The packaging includes a single four-leg bracket with evenly spaced mounting points at 90-degree intervals. This design improves load distribution and vibration isolation for mid-sized motors and is a solid pick for Carrier or similar systems.
Best for: Carrier-compatible installs needing four equally spaced legs. Caution: verify that your motor’s bolt circle matches the bracket’s configuration to avoid mounting misalignment.
Fasco FM55 Fas Mount Bracket Kit
The Fasco FM55 kit is a direct-drive mounting solution for 5.5″ diameter motors. It includes grommets and eyelets and features a bolt circle range around 9″ to 10.18″. This kit is practical for straightforward direct-drive installations where flexibility and included mounting hardware simplify the setup.
Best for: Direct-drive 5.5″ motors needing a balanced, ready-to-mount bracket with included hardware. Limitation: depending on motor bolt circle exact dimensions, some adjustments may be required for a perfect fit.
Packard 5.0″ & 5.5″ Torsion Flex Motor Bracket Tfm556
The Packard Tfm556 offers 3-leg torsion-flex mounting with 120-degree leg spacing. It clamps to the motor shell with no preassembly needed, and provides a choice between tightening on a 10 1/4″ or 9 1/8″ bolt circle. This bracket is well-suited for a variety of small-to-mid-sized blowers where vibration isolation is a priority and installation simplicity matters.
Best for: Installers seeking a no-preassembly, clamp-on option with flexible bolt-circle compatibility. Caution: confirm bolt circle compatibility with your specific motor before purchase.
Buying guide: Key considerations for choosing a blower motor mounting kit
Why mounting brackets matter: Proper mounting reduces vibration, lowers noise, and prolongs blower life by isolating motor torque from the housing. The right kit also simplifies installation, especially when restoring older systems or matching nonstandard bolt patterns.
How to choose by motor diameter: Most brackets for direct-drive blowers come in 5″, 5.5″, or 5-5/8″ diameters. Confirm your motor’s housing diameter and bolt circle before selecting a kit. If in doubt, pick a kit offering adjustable or multiple bolt-circle options.
Leg configuration matters: Three-leg designs often provide straightforward alignment and adequate stability for lighter loads, while four-leg torsion-flex or belt-style bands can distribute torque more evenly for heavier motors. Consider the weight and vibration profile of your blower when deciding.
Installation hardware: Some kits include grommets, eyelets, and mounting accessories. If missing pieces are a concern, choose a package that lists included hardware clearly to avoid additional shopping trips.
Noise reduction vs. ease of install: Torsion-flex brackets typically prioritize vibration isolation, reducing noise and wear on the blower. If you need quick installation with decent isolation, a belt-like belly band or flexible bracket may suffice.
Frequently asked questions
- What diameter motors do these brackets fit? Most options shown fit 5.0″ to 5.5″ motors, with some up to 5-5/8″ diameter. Always verify your motor diameter and bolt circle before ordering.
- Do these brackets require preassembly? Some models clamp to the motor shell with no preassembly, while others include grommets, eyelets, or bands. Check the product details for included hardware.
- Which bracket is best for quiet operation? Brackets described as torsion-flex or with three- or four-leg isolation tend to reduce vibration transfer to the blower housing, typically yielding quieter operation.
- Can I use any bracket with my Carrier furnace? Several options are designed for Carrier-compatible applications, but always confirm mounting dimensions, bolt circle, and leg spacing to ensure compatibility.
- Are these kits compatible with direct-drive blowers? Yes, many are specifically advertised for direct-drive motors and include the necessary hardware for direct mounting.
- What should I avoid when selecting a mounting bracket? Avoid a bracket with insufficient bolt-circle compatibility or leg configuration for your motor; mismatch can lead to poor fit, increased vibration, or mounting instability.
Notes on accuracy and usage
The information above reflects listed features and common mounting configurations for the products shown. Always verify current product specifications on the retailer page before purchasing, as kits may update hardware inclusions or supported bolt patterns.