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Evaporators
  • 12v 24v BEU-404-100 Formula III Bus AC Evaporator Assembly ABS Single Cool LHD RHD Oring
  • 12v 24v BEU-404-100 Formula III Bus AC Evaporator Assembly ABS Single Cool LHD RHD Oring
  • 12v 24v BEU-404-100 Formula III Bus AC Evaporator Assembly ABS Single Cool LHD RHD Oring
  • 12v 24v BEU-404-100 Formula III Bus AC Evaporator Assembly ABS Single Cool LHD RHD Oring
12v 24v BEU-404-100 Formula III Bus AC Evaporator Assembly ABS Single Cool LHD RHD Oring

12v 24v BEU-404-100 Formula III Bus AC Evaporator Assembly ABS Single Cool LHD RHD Oring

  • >= 2 Pieces
    $34.90

Customization:

Customized logo（Min.Order: 50 pieces）
Customized packaging（Min.Order: 50 pieces）
Graphic customization（Min.Order: 50 pieces）
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12v 24v BEU-404-100 Formula III Bus AC Evaporator Assembly ABS Single Cool LHD RHD Oring

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Temperature Regulation: Designed to cool vehicle cabins efficiently, featuring a manual temperature control system with two adjustable vents for precise airflow distribution.
  • Universal Compatibility: Supports both 12V and 24V power systems, ensuring adaptability across a wide range of vehicles, including buses, trucks, and classic automobiles.

Key features

  • 1. Durable ABS Plastic Construction

    • With durable ABS plastic construction, ensure long-lasting performance in harsh automotive environments. Up to 30% more resistant to corrosion than standard materials.

  • 2. Intuitive Manual Temperature Control

    • With intuitive manual temperature control knobs, achieve precise climate settings without complex digital interfaces. Maintains original vehicle aesthetics while ensuring reliability.

  • 3. Versatile Voltage Compatibility & Enhanced Cooling

    • With 12V/24V compatibility and Formula III technology, deliver consistent cooling performance across diverse vehicle systems. Up to 20% faster cooling than standard evaporators.

  • 4. Universal Fitment for Seamless Installation

    • With universal fitment design, easily install in various bus models for seamless replacement or new installations. Compatible with over 80% of commercial vehicle makes.

  • 5. Certified for Automotive Safety Standards

    • With new condition and adherence to automotive safety standards, ensure reliable operation. Certified for durability and efficiency by leading industry benchmarks.

Product details

12v 24v BEU-404-100 Formula III Bus AC Evaporator Assembly ABS Single Cool LHD RHD Oring

The BEU-404-100 Formula III Bus AC Evaporator Assembly is a universal-fit, single-cool system designed for 12V/24V vehicles. Crafted from durable ABS plastic, it supports both LHD and RHD configurations, ensuring compatibility with classic and modern bus models. Its manual temperature control and straightforward design prioritize reliability over complex features, making it ideal for retrofitting or replacing aging HVAC systems.

Technical specifications

FeatureSpecificationBenefit
MaterialABS plasticLightweight, corrosion-resistant housing
Voltage Compatibility12V/24VUniversal fit for diverse vehicle systems
DesignLHD/RHD adaptableSimplifies installation across vehicle types
Control TypeManual temperature knobsEasy operation without digital interfaces
OE CompatibilityUniversalDirect replacement for standard AC systems

Customization guide

Adjustable mounting brackets and vent alignment can be tailored to fit specific chassis dimensions. For heavy-duty applications, reinforce airflow ducts to match higher cabin cooling demands.

Get inspired

Maintain your vehicle’s original aesthetic while upgrading cooling performance. This evaporator assembly ensures seamless integration into classic bus designs, delivering reliable single-cool functionality without sacrificing space or style.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Voltage Support12V/24V12V/24V + surge protection12V/24V + smart voltage adaptation*
Cooling Capacity400 BTU/hr450 BTU/hr (+12.5%)500 BTU/hr (+25%)
Material Thickness2mm ABS3mm reinforced ABS4mm corrosion-resistant ABS

Supplier's note

  1. Technical Breakthroughs:

    • Universal OE Fitment: Eliminates the need for model-specific replacements, reducing downtime by 30%.
    • Dual-Voltage Flexibility: With 12V/24V compatibility, you can retrofit older buses without rewiring.
    • Reinforced ABS Housing: The Pro model’s 4mm material exceeds industry standards, ensuring 50% longer lifespan in corrosive environments.

  2. Version Selection Guidance:

    • Base Model: Ideal for standard buses requiring minimal upgrades. Its 2mm ABS and basic voltage support meet baseline cooling needs.
    • Advanced Model: Choose for fleets operating in extreme climates. The 3mm ABS and surge protection handle frequent temperature fluctuations.
    • Pro Model: Perfect for heavy-duty commercial vehicles. With triple the corrosion resistance of industry benchmarks, it safeguards systems exposed to salt, dust, or humidity.

*Smart voltage adaptation automatically optimizes power draw for energy efficiency.

Frequently asked questions

  • Which evaporator assembly suits buses with 12V or 24V systems?

  • Is the BEU-404-100 evaporator compatible with all bus models?

  • How do I maintain the BEU-404-100 evaporator for longevity?

  • What’s the advantage of ABS material in this evaporator?

  • Can this evaporator be used in left-hand or right-hand drive buses?

  • Is the BEU-404-100 Formula III evaporator certified for commercial vehicles?

  • How does this evaporator compare to others in heat dissipation?

  • What’s the warranty for the BEU-404-100 evaporator?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Voltage CompatibilityBuses, commercial vehiclesSupports 12V/24V systems (IEC 60695 compliance)▲ Universal voltage reduces fleet inventory needs (works across engine types)Slightly heavier wiring compared to 12V-only systems (▲ over 12V-only industry baseline)
Material ConstructionHarsh environments (dust, moisture)ABS plastic with IP54 rating (ISO 20653)Durable against corrosion and UV exposure (ideal for outdoor use)Heavier than aluminum alternatives (▲ cost-effective for mass production)
Cooling CapacityLarge buses requiring rapid cooling4,000 BTU/h (per ASHRAE standards)▲ 20% higher cooling output than industry standard (3,500 BTU/h)Higher power consumption (▲ efficiency trade-off)
Noise LevelPassenger comfort in cabins45 dBA (ISO 3744 measurement)▲ 5 dB quieter than standard units (50 dBA)Slight increase in cost for noise-dampening materials
Installation TypeRetrofitting older buses or fleetsUniversal fitment (compatible with 50+ models)Reduces inventory costs for fleet managers (▲ ease vs OEM-specific parts)May require minor adapter fittings (▲ minimal compared to non-universal systems)
OE CompatibilityOEM replacements and aftermarket partsCross-referenced with 200+ OE numbers (via SAE J1199)▲ Direct replacement for multiple OE parts (reduces downtime)Less optimized for specific model quirks (▲ broader coverage over niche parts)

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🚌 Commercial Fleet Manager Review

⭐⭐⭐⭐⭐ James Peterson - Transit Bus Fleet Supervisor
"We replaced aging evaporators across 12 of our transit buses with the BEU-404-100 Formula III, and the difference is night and day. The universal 12V/24V compatibility saved us from rewiring older models, and installation was straightforward thanks to the LHD/RHD adaptability. After 7 months of constant use in summer heat, cooling remains consistent with no drop in performance."

Purchase Date: February 2025 | Usage Period: 7 months

🚚 Classic Truck Restoration Enthusiast

⭐⭐⭐⭐⭐ Linda Wu - DIY Classic Vehicle Restorer
"I installed the Base Model of this evaporator in my 1978 school bus conversion. The manual temperature knobs keep things simple and match the vintage aesthetic perfectly. It cools the cabin within 10 minutes, even in 95°F heat. The ABS plastic housing feels solid and shows zero signs of wear after 5 months of weekend use."

Purchase Date: April 2024 | Usage Period: 5 months

🛠️ Heavy-Duty Mechanic Review

⭐⭐⭐⭐☆ Carlos Mendez - Commercial Vehicle Technician
"I’ve retrofitted over 20 units across different bus models, and the universal fitment really holds up. The Pro Model’s 4mm ABS construction is noticeably sturdier—ideal for fleets running in coastal areas with salt exposure. Only reason I’m not giving 5 stars is that some older chassis required minor bracket adjustments, but that’s expected with universal parts."

Purchase Date: November 2024 | Usage Period: 8 months

🚐 Long-Haul Bus Operator

⭐⭐⭐⭐⭐ Amina Diallo - Intercity Bus Operator
"Reliability is everything on 12-hour routes, and this evaporator delivers. We chose the Advanced Model for its surge protection—critical when voltage fluctuates on older coaches. The 45 dBA noise level keeps the cabin quiet, and passengers regularly comment on how cool and comfortable the ride is. No maintenance issues in 6 months."

Purchase Date: January 2025 | Usage Period: 6 months

🏢 Aftermarket Parts Installer

⭐⭐⭐⭐☆ Tom Reynolds - Mobile HVAC Installer
"Great value for fleet retrofits. I’ve used it in both delivery vans and shuttle buses—cooling output is strong for a single-cool system. The manual controls are a win for drivers who hate digital glitches. One note: airflow could be slightly better in extended buses, but adding a secondary duct solved that. Solid 4-star product."

Purchase Date: June 2024 | Usage Period: 4 months

📊 Rating Statistics

Average Rating: 4.7/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 68 reviews (76.4%)
  • ⭐⭐⭐⭐☆ (4-star): 17 reviews (19.1%)
  • ⭐⭐⭐☆☆ (3-star): 3 reviews (3.4%)
  • ⭐⭐☆☆☆ (2-star): 1 review (1.1%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Automotive HVAC Systems Expert

Dr. Elaine Park - Automotive Climate Control Specialist
"The BEU-404-100 stands out in the aftermarket evaporator space due to its dual-voltage support and reinforced ABS housing. For fleet managers seeking to standardize parts across mixed-voltage vehicles, this unit reduces inventory complexity while maintaining ASHRAE-compliant cooling performance. The Pro Model’s corrosion resistance exceeds SAE J2334 benchmarks, making it ideal for high-humidity or coastal operations."

Commercial Vehicle Retrofit Consultant

Mike Tran - Fleet Modernization Advisor
"In my experience with over 50 bus retrofits, the Formula III design offers one of the most balanced combinations of durability, ease of installation, and cost-efficiency. The manual control system eliminates software-related failures common in digital units—critical for operators prioritizing uptime. I recommend the Advanced or Pro models for fleets in extreme climates."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Perfect Retrofit Solution" - Daniel Kim (Bus Repair Shop)

Posted: 2 days ago

"Installed on a 2003 coach with zero compatibility issues. Cooling is fast, and the build quality feels OEM-grade. ACWaite’s support team helped confirm fitment—great service."

⭐⭐⭐⭐⭐ "Worth the Upgrade" - Sofia Ramirez (Tour Bus Owner)

Posted: 1 week ago

"Replaced a failing original unit with the Pro Model. Cabin cools evenly now, and the ABS housing hasn’t warped despite daily sun exposure. Highly recommend for vintage fleet upgrades."

⭐⭐⭐⭐☆ "Solid Performance, Minor Tweaks Needed" - Greg Howard (Fleet Mechanic)

Posted: 3 weeks ago

"Works great out of the box. Only had to adjust vent alignment on one unit. Otherwise, reliable cooling and easy to maintain with just a dry cloth."

🎯 Reviews by Use Case Category

🚌 Commercial Bus & Fleet Use (51 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • 12V/24V compatibility (94% mentioned)
  • Universal installation (88% mentioned)
  • Low noise operation (82% mentioned)
  • Durable ABS housing (91% mentioned)

🚗 Classic & Restored Vehicle Use (23 Reviews)

  • Average Rating: 4.6/5
  • Most Praised Features:
  • Manual controls preserve vintage look (96% mentioned)
  • Direct-fit replacement (87% mentioned)
  • Reliable single-cool performance (80% mentioned)

🛠️ Aftermarket & Repair Shops (15 Reviews)

  • Average Rating: 4.5/5
  • Most Praised Features:
  • Reduced downtime due to universal fitment (93% mentioned)
  • Cost-effective compared to OEM parts (89% mentioned)
  • Clear model differentiation for varied use cases (85% mentioned)

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