Thermo REL4504 refrigerator

Brand : Thermo

Product Code : SKU 4393FFF REFRIG

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Shipping

All products ship from our 30,000 sq. ft. Haverhill, MA warehouse

Thermo Scientific Revco REL4504 High-Performance Laboratory Refrigerator

The Thermo Scientific Revco REL4504 High-Performance Laboratory Refrigerator combines the proven performance of the Revco laboratory refrigeration platform with the engineering and support of the Thermo Scientific product line. Designed specifically for scientific applications, the REL4504 provides 45.8 cubic feet (1,297 L) of refrigerated storage, dual insulated sliding glass doors, and a precise operating temperature range of 1°C to 8°C (factory preset to 4°C). It is an excellent choice for biotechnology companies, pharmaceutical manufacturers, hospitals, universities, clinical laboratories, and industrial research facilities requiring dependable storage for valuable laboratory materials.

Following Thermo Scientific's acquisition of the Revco brand, the REL Series continued to build upon Revco's long-standing reputation for laboratory refrigeration while incorporating Thermo Scientific branding. The REL4504 features a digital microprocessor controller, positive forced-air circulation, automatic defrost, comprehensive alarm monitoring, and heavy-duty laboratory construction designed for continuous operation in demanding research environments. Sliding insulated glass doors provide excellent product visibility while minimizing the aisle clearance required for access.

Many laboratories pair the REL4504 with ultra-low freezers for long-term biological preservation, laboratory freezers for frozen reagent storage, biosafety cabinets for sterile sample preparation, and centrifuges to create a complete laboratory cold storage workflow.

Thermo Scientific Revco REL4504 Key Features

Manufacturer: Thermo Scientific
Product Line: Revco
Model: REL4504
45.8 cu. ft. (1,297 L) capacity
Temperature range: 1°C to 8°C
Factory preset temperature: 4°C
Dual insulated sliding glass doors
Digital microprocessor temperature controller
Bright digital temperature display
Positive forced-air circulation
Automatic defrost
Audible and visual temperature alarms
Keyed power switch with setpoint security
Eight adjustable epoxy-coated wire shelves
Sliding doors reduce aisle clearance requirements
Refurbished and performance tested by American Instrument Exchange
90-day warranty included

Overview

The Thermo Scientific Revco REL4504 is engineered for laboratories where temperature stability directly impacts research quality and sample integrity. Unlike commercial refrigerators adapted for laboratory use, the REL platform incorporates laboratory-specific airflow management, precision electronic controls, and integrated monitoring systems to maintain dependable refrigeration during continuous operation.

Positive forced-air circulation distributes conditioned air evenly throughout the cabinet, promoting excellent temperature uniformity across every shelf while providing rapid temperature recovery after routine door openings. The sliding glass doors provide full visibility of stored materials while requiring less clearance than hinged doors, making the REL4504 particularly valuable in laboratories where aisle space is limited.

Common Applications

The REL4504 is commonly used for storing laboratory reagents, biological specimens, cell culture media, antibodies, enzymes, vaccines, pharmaceuticals, diagnostic kits, calibration standards, quality-control materials, and other temperature-sensitive laboratory supplies.

Ideal Laboratory Types

The REL4504 is well suited for:

Biotechnology companies
Pharmaceutical manufacturers
Academic research laboratories
Clinical laboratories
Hospitals
Government research laboratories
Environmental testing laboratories
Industrial quality assurance laboratories

Its combination of laboratory-grade controls, dependable refrigeration, and space-saving sliding doors makes it an excellent solution for facilities requiring centralized refrigerated storage.

Why Choose the Thermo Scientific Revco REL4504?

The Thermo Scientific Revco REL4504 combines the proven engineering of the Revco refrigeration platform with Thermo Scientific branding and support. Purpose-built for scientific environments, the REL Series incorporates features not typically found on commercial refrigeration systems, including microprocessor controls, positive forced-air circulation, automatic defrost, comprehensive alarm systems, and laboratory-grade cabinet construction.

The sliding glass door configuration further enhances workflow by allowing excellent product visibility while conserving valuable laboratory floor space.

Typical Stored Materials

The Thermo Scientific Revco REL4504 is commonly used to store laboratory reagents, biological specimens, cell culture media, antibodies, enzymes, vaccines, pharmaceuticals, diagnostic kits, calibration standards, quality-control materials, and other temperature-sensitive laboratory supplies.

Thermo Scientific Revco REL4504 Key Specifications

Identification

Manufacturer: Thermo Scientific
Product Line: Revco
Model: REL4504
Product Type: High-Performance Laboratory Refrigerator
Door Configuration: Dual sliding insulated glass doors

Capacity

45.8 cu. ft. (1,297 liters)

Temperature Range

1°C to 8°C
Factory preset: 4°C
Automatic defrost operation

Construction

Dual sliding insulated glass doors
Eight adjustable epoxy-coated wire shelves
Powder-coated steel interior and exterior
Laboratory-grade insulated cabinet

Refrigeration System

Positive forced-air circulation
Automatic defrost
High-performance refrigeration system
Microprocessor-controlled temperature regulation

Monitoring & Controls

Digital microprocessor controller
Bright digital temperature display
Audible and visual temperature alarms
Keyed power switch with setpoint security

Electrical Requirements

115V, 60 Hz
20 Amp dedicated circuit recommended

Exterior Dimensions

56.5" W × 34.5" D × 79.1" H

Interior Dimensions

45.8 cu. ft. usable storage volume
Eight adjustable shelves with positive forced-air circulation throughout the cabinet.

Weight

Approximately 670 lbs.

Operating Costs & Energy Considerations

The REL4504 utilizes a high-performance forced-air refrigeration system designed to maintain stable laboratory temperatures while recovering quickly after routine door openings. Regular condenser cleaning, proper cabinet ventilation, and periodic inspection of door seals will help maximize cooling efficiency and extend equipment life.

Specifications compiled from Thermo Scientific Revco manufacturer literature and American Instrument Exchange product information.

Refurbishment & Testing Process

Every Thermo Scientific Revco REL4504 received by American Instrument Exchange undergoes a comprehensive inspection before shipment. Our technicians verify refrigeration performance using calibrated temperature monitoring equipment, inspect the microprocessor controller, digital display, alarm system, compressor, evaporator, condenser, shelving, sliding door operation, door seals, and cabinet integrity. Each refrigerator is thoroughly cleaned and temperature tested to ensure dependable laboratory performance before shipment.

Laboratories building complete cold storage systems frequently purchase ultra-low freezers, laboratory freezers, biosafety cabinets, centrifuges, and additional laboratory refrigerators from American Instrument Exchange.

Shipping & Installation Considerations

The Thermo Scientific Revco REL4504 ships by freight from American Instrument Exchange. Before installation, verify doorway clearances, available electrical service, and adequate ventilation around the cabinet. The sliding-door configuration is especially beneficial in laboratories with limited aisle space. Allow the refrigerator to stabilize at operating temperature before loading valuable laboratory materials.

Thermo Scientific Revco REL4504 Frequently Asked Questions

What is the model number of this refrigerator?

This refrigerator is the Thermo Scientific Revco Model REL4504.

How much storage capacity does the REL4504 provide?

The REL4504 provides 45.8 cubic feet (1,297 liters) of refrigerated laboratory storage with eight adjustable shelves.

What temperature range does the REL4504 maintain?

The refrigerator operates between 1°C and 8°C, with a factory preset temperature of 4°C.

Why does the REL4504 use sliding glass doors?

Sliding glass doors provide excellent visibility of stored materials while requiring less aisle clearance than traditional hinged doors, making the refrigerator well suited for laboratories with limited floor space.

How is the REL4504 tested before shipment?

Every refurbished Thermo Scientific Revco REL4504 is inspected and temperature tested by American Instrument Exchange technicians. Refrigeration performance, controls, alarms, temperature stability, shelving, door operation, and overall cabinet functionality are verified before shipment.

Testing Procedures for Used and Refurbished Laboratory Refrigerators
Ensure Temperature Stability and Cold Storage Accuracy

Used and refurbished laboratory refrigerators from American Instrument Exchange are thoroughly tested to ensure reliable cold storage performance, temperature accuracy, and compliance with laboratory safety and storage standards. Each unit undergoes a detailed inspection and functional verification to meet the requirements of clinical, pharmaceutical, research, and industrial labs.

Why Testing Used Laboratory Refrigerators Is Essential

Before a laboratory refrigerator is reintroduced into any laboratory setting, it must be carefully tested for:

• Temperature uniformity and stability
• Cooling system integrity and compressor function
• Door seal performance and insulation effectiveness
• Electrical safety and compliance with lab standards

Thorough testing minimizes the risk of temperature excursions, product loss, and system failures—especially critical for storing reagents, vaccines, biological samples, pharmaceuticals, and temperature-sensitive materials.

Our structured testing protocol ensures refurbished lab refrigerators deliver consistent, dependable performance across all makes and models.

Key Testing Procedures for Refurbished and Used Laboratory Refrigerators

1. Initial Visual Inspection
• Check exterior surfaces, hinges, and door gaskets for wear, corrosion, or damage
• Inspect power cords, plugs, and control panels for fraying or visible defects
• Verify that shelves, racks, and internal compartments are present and functional

2. Functional Testing
• Power on the refrigerator and verify that display screens, alarms, and controls function properly
• Test door latches and sealing mechanisms to ensure secure closure and insulation
• Run preliminary temperature cycles to observe startup behavior and cooling response

3. Temperature and Stability Testing
• Test internal temperature sensors and controllers using thermometers/probes
• Monitor temperature at multiple points within the chamber over an extended period
• Verify accuracy across user-defined setpoints (e.g., +4°C, +2°C to +8°C range)

4. Cooling System and Compressor Evaluation
• Test compressor startup, cycling, and operating noise levels
• Inspect condenser coils and fans for proper function and cleanliness
• Check refrigerant pressure (if applicable) and confirm there are no leaks or system inefficiencies

5. Electrical Safety and Compliance Checks
• Ensure all internal and external electrical components are properly grounded
• Perform insulation resistance and leakage current tests
6. Final Quality Assurance Checklist
• Run full operational tests over a 24-hour period
• Document temperature logs, control responsiveness, and system performance
• Complete a detailed service report

All refurbished laboratory refrigerators from American Instrument Exchange are backed by our rigorous testing standards and quality commitment. From vaccine storage to reagent preservation, you can count on consistent cold storage performance from day one.

Repair and Refurbishment Protocol for Used Laboratory Refrigerators
Cold Storage Performance from American Instrument Exchange

At American Instrument Exchange, every used laboratory refrigerator we offer is subjected to a comprehensive repair and refurbishment protocol. Whether it’s a general-purpose lab refrigerator, pharmaceutical-grade unit, or undercounter model, our goal is to restore each system to peak performance—ensuring consistent temperature control and reliable to laboratory storage standards.

Why Choose a Refurbished Laboratory Refrigerator from American Instrument Exchange?

• Fully tested for cold storage accuracy and operational safety
• Backed by a warranty
• Cost-effective alternative to new refrigeration equipment
• Sustainably refurbished to reduce environmental impact
• Serviced by expert technicians with decades of laboratory equipment experience

Step-by-Step Refurbishment Protocol

Every laboratory refrigerator from American Instrument Exchange follows a detailed, multi-stage process to ensure top-tier performance and reliability:

1. Initial Intake & Inspection

• Visual inspection for dents, corrosion, or structural damage
• Mechanical check of door hinges, gaskets, seals, and internal components
• Documentation of missing parts or areas requiring repair or replacement

2. Cleaning and Decontamination

• Internal and external cleaning using non-abrasive, lab-safe cleaners
• Decontamination/cleaning of all surfaces to remove biological or chemical residues
• Thorough cleaning of shelving, drawers, and removable interior parts

3. Mechanical and Electrical Repairs

• Replacement or repair of worn mechanical parts (door latches, seals, hinges, etc.)
• Inspection and restoration of control interfaces, thermostats, sensors, and displays
• Evaluation of wiring, relays, fuses, and power supply components for safety and integrity

4. Refrigeration System and Compressor Evaluation

• Testing of compressor function, condenser coils, and evaporators
• Inspection for refrigerant leaks and pressure performance (if applicable)
• Verification of proper airflow, fan operation, and defrost cycles

5. Temperature and Performance Testing

• Testing of temperature sensors and control boards
• Verification of temperature stability and uniformity throughout the chamber
• Testing of multiple setpoints (e.g., +2°C to +8°C) over extended operating periods

6. Safety and Compliance Checks

• Inspection of grounding and electrical insulation per lab safety standards
• Testing of alarm systems (if applicable) for temperature excursions or power failure

7. Final Quality Control and Documentation

• Multi-day operational test under real-world conditions
• Final cleaning, inspection, and performance validation
• Detailed service report with temperature logs, repair notes, and certification of refurbishment

Trust the Experts at American Instrument Exchange

With over 50 years of industry experience, American Instrument Exchange is a leading provider of high-quality refurbished laboratory equipment. Our proven laboratory refrigerator refurbishment protocol ensures consistent, accurate cold storage—so you can safeguard your samples, reagents, and research materials with confidence.

Warranty Information

All used equipment sold by American Instrument Exchange is refurbished/reconditioned, tested to meet specifications, cleaned, and comes with a 90-day warranty from the date of shipment unless otherwise specified. New products include a warranty from the manufacturer. Your warranty is only valid if you have paid your invoice. If your invoice is over 30 days old, warranty work will not be performed until your invoice is paid in full. American Instrument Exchange is not liable for any special or consequential damages that result from the use of, or the inability to use, the materials on this site or the performance of the products,

Exceptions include international sales and items that are agreed to be sold with a lesser warranty or items that are agreed to be sold “as is.”

Should there be visible shipping damage to packaging or concealed shipping damage to item(s) supplied, buyer must communicate such damage to the delivering entity or carrier upon receipt first and to American Instrument the same day item is accepted / signed for. Failure to do so voids warranty. Customer decision to involve / procure third party or OEM service other than American Instrument or AIE assigned vendors to resolve in-warranty instrument failure or defect without first placing a service call to American Instrument voids warranty.

Return & Cancellation Policy

American Instrument Exchange will authorize the return of and issue a full refund for any equipment that is not working as represented and could not be replaced or repaired to the customer’s satisfaction by AIE or a representative of AIE during the warranty period. Returns without prior authorization and an RMA number will not be accepted.

Customers are responsible for proper packaging of the equipment and all included accessories. American Instrument will pay for insurance and shipping costs. Non-inventory items bought specifically to fill customer orders may possibly be returned, but on a case by case basis.

Customers who cancel orders after refurbishing has begun or after delivery where there are no equipment performance issues may be subject to a Restocking/Cancellation Fee of 20% or more and responsible for shipping costs for both the delivery and return.

Ongoing and Extended Support Options

American Instrument Exchange is able to provide additional repair and support services outside the warranty terms for most products that sell.

For biosafety cabinets, clean benches, chemical fume hoods, and other clean air products our team at AIE Laboratory Services can provide certifications, repairs, decontaminations, and other services for customers throughout New England, and guidance and limited technical assistance for any customers in the US and Canada for new or refurbished biosafety cabinets purchased from American Instrument Exchange.

For all other products, the repair service team at American Instrument Exchange can provide both field and depot repair evaluations. We can easily schedule and coordinate the pick-up and transportation of your malfunctioning equipment. By offering hourly rates lower than most OEM service providers and eliminating travel time for technicians, we help reduce repair costs. Furthermore, our lab depot repair service minimizes or eliminates scheduling delays. Our experienced service technicians are qualified to restore your equipment to factory specifications.

Please contact our team at info@americaninstrument.com for more details.

FAQ

Does the equipment come with a warranty?

Yes, all equipment from American Instrument Exchange comes with a warranty.
Used/reconditioned/refurbished equipment is tested to make sure it operates to the manufacturer's specifications and comes with a 90-day warranty (unless otherwise noted). New equipment comes with a warranty from the manufacturer.

How do you test and recondition the equipment?

Testing requirements vary across all the equipment categories we sell. Temperature controlled units are tested with NIST traceable probes and data loggers. Gaskets, external housing, glass, handles, controls and control screens are all thoroughly inspected for integrity and functionality.
We test all equipment using the manufacturer's parameters and specifications to confirm that the unit operates properly.

How do products ship from American Instrument Exchange?

We can ship products both nationally and internationally using a well-established network of transporters. Smaller items will ship via UPS. Larger equipment will be palletized and shipped either LTL or air-ride, depending on the specific equipment and/or delivery requirements.

Return and order cancellation policy

American Instrument Exchange will accept the return of any product that is not working as represented and could not be replaced or repaired to the customer's satisfaction during the warranty period. Customers who cancel orders after refurbishing has begun will be subject to a cancellation and restocking fee of between 20% and 40%.

Are discounts available for educational or non-profit institutions, or for bulk purchases?

Yes – call or email us today with a list of equipment you're looking for and we can potentially put together a quote that includes a discount.

How does your price matching policy work?

We strive to keep our pricing competitive and reasonable. If you find comparable items for sale at a lower price from other vendors please send us a link and or quote for the item and we'll do our best to match or beat the price.

Can I see the equipment in person before committing to a purchase?

Customers are welcome to make an appointment to view equipment in our warehouse. Given our workload we may not be able to test or clean the equipment prior to your arrival if you have not committed to an order.

1023 Western Avenue is a working warehouse, not a showroom, and customers should dress appropriately and wear closed toe shoes.

Can I ship products that I purchased elsewhere to American Instrument for repair?

Yes – please see our repair services page for more information.