If you're evaluating a Follett medical refrigerator or freezer, you're usually past the basics. You already know you need purpose-built cold storage, the question is which Follett series, which model, and which configuration matches your facility's compliance requirements, space constraints, and workflow.
Who is Follett? Follett (now part of Middleby Corporation) has been building cold storage equipment since 1948. What sets them apart in the medical space is engineering depth: patented variable speed compressor technology, a 6-level plenum air distribution system, Wi-Fi remote monitoring options, and a product range that spans countertop vaccine freezers through 45 cu.ft. double-door pharmacy refrigerators and -86°C TwinGuard ULT systems. In a market where most brands focus on one segment, Follett covers countertop, undercounter, upright, double-door, blood bank, pharmacy combo, plasma, ULT, and cryogenic, all from one manufacturer.
MediDepot carries 55+ Follett models. This guide compares every series and model available so you can shortlist the right unit for your clinic, pharmacy, lab, blood bank, or research facility.
Quick Start: Browse Follett at MediDepot
If you want to compare specs live, start with the Follett brand page. If you're comparing across brands, use the medical refrigeration hub.
Table of Contents
- Follett Product Series Overview
- Follett Technology: What Makes Them Different
- Countertop Models: Compact Medical Storage
- Undercounter Models: Edge, Performance Plus & Infinity
- Infinity Series Upright: The Flagship Line
- Double Door & High-Capacity (45 cu.ft.)
- Blood Bank Refrigerators
- Pharmacy Combo Units: Fridge + Freezer in One
- ULT & Cryogenic Freezers (-86°C to -150°C)
- Specialty: Plasma Freezers, Chillers & Lab
- Follett vs Other Premium Brands
- Ordering & Smart Solutions
- Explore Related MediDepot Guides
- External References
- Frequently Asked Questions (FAQ)
Follett Product Series Overview
Follett organizes its medical refrigeration into distinct series, each designed for a specific use case and budget level. Understanding the series hierarchy is the fastest way to narrow your search.
| Series | Form Factor | Capacity Range | NSF 456 | Compressor | Best For |
|---|---|---|---|---|---|
| Countertop (REF1/2, FZR1/2) | Benchtop / Wall-mount | 0.6–1.8 cu.ft. | ✅ FZRVAC2 | Standard | Point-of-care, dispensing systems, compact spaces |
| Edge Series (REFNAT5) | Undercounter | 5 cu.ft. | — | Standard (natural refrigerant) | Budget undercounter, sustainability focus |
| Performance Plus (REF4P/5P, FZR4P/5P) | Undercounter | 3.9–4.5 cu.ft. | ✅ FZRVAC models | Standard | Pharmacy, exam room, ADA settings |
| Infinity Series (REF/FZR 5i–25i) | Undercounter + Upright | 4.5–24.6 cu.ft. | ✅ All uprights | Variable Speed (patented) | Hospital pharmacy, high-volume clinic, Wi-Fi monitoring |
| Double Door (REF45) | Upright | 45 cu.ft. | ✅ | Standard | Regional pharmacy, hospital central |
| Pharmacy Combo (REFFZR) | Upright | 9–21 cu.ft. total | — | Standard | All-in-one pharmacy fridge+freezer |
| TwinGuard ULT (FZRDR) | Upright | 12.7–25.7 cu.ft. | — | Dual (TwinGuard) | Biobank, research, -86°C storage |
Follett Technology: What Makes Them Different
Patented Variable Speed Compressor (Infinity Series)
Most medical refrigerators use fixed-speed compressors that cycle on and off. Each cycle creates a small temperature swing. Follett's Infinity Series uses a patented "infinite" variable speed control that adjusts compressor output continuously delivering only the cooling power needed at any moment. The result: ±1°C temperature consistency, lower energy consumption, and quieter operation. This isn't marketing language. It's a fundamentally different engineering approach that matters when you're storing vaccines or biologics where temperature stability directly affects potency.
6-Level Plenum Air Distribution
Follett's upright models deliver cold air at six levels inside the cabinet, not just from one vent at the top or bottom. This means every shelf position receives consistent airflow, reducing "warm spots" and dramatically improving recovery time after door openings. In a busy pharmacy where the door opens dozens of times per day, faster recovery means fewer temperature excursions.
Wi-Fi Remote Monitoring (Infinity Select Models)
Select Infinity Series models can be equipped with a network interface card that streams temperature data to the cloud via Wi-Fi. This enables remote monitoring, alarm forwarding, and 24/7 compliance documentation without physically checking the unit.
TwinGuard Dual Compressor (-86°C ULT)
Follett's TwinGuard ULT freezers use two independent compressors. If one fails, the other maintains protective storage temperatures buying critical time for service response. For biobanks and clinical trial sample storage where irreplaceable specimens are at stake, this redundancy is non-negotiable.
👉 Related: ULT Freezer Cost of Ownership & Backup Plan Guide
Countertop Models: Compact Medical Storage
Follett countertop units fit on standard 24" deep counters, mount on walls, or stack on other Follett units. Two capacity classes: 0.6–1 cu.ft. (single-shelf) and 1.6–1.8 cu.ft. (two-shelf). LED or keypad controls available.
All Countertop Models at MediDepot
| Model | Type | Capacity | Control | NSF 456 | Shop |
|---|---|---|---|---|---|
| REF1 | Refrigerator | 1.0 cu.ft. | LED | — | View → |
| REF1-KP | Refrigerator | 1.0 cu.ft. | Keypad | — | View → |
| REF2 | Refrigerator | 1.8 cu.ft. | LED | — | View → |
| REF2-KP | Refrigerator | 1.8 cu.ft. | Keypad | — | View → |
| FZR1 | Freezer | 0.6 cu.ft. | LED | — | View → |
| FZR1-KP | Freezer | 0.6 cu.ft. | Keypad | — | View → |
| FZR2 | Freezer | 1.6 cu.ft. | LED | — | View → |
| FZR2-KP | Freezer | 1.6 cu.ft. | Keypad | — | View → |
| FZRVAC2 | Vaccine Freezer | 1.6 cu.ft. | LED | ✅ | View → |
Undercounter Models: Edge, Performance Plus & Infinity
Follett offers three undercounter series at different feature levels. The key decision: do you need basic reliable storage (Edge), mid-range pharmacy performance (Performance Plus), or variable-speed precision with touchscreen and optional Wi-Fi (Infinity)?
All Undercounter Models at MediDepot
| Model | Series | Type | Capacity | Control | NSF 456 | Shop |
|---|---|---|---|---|---|---|
| REFNAT5-GD | Edge | Refrigerator (Glass) | 5 cu.ft. | LED | — | View → |
| REFNAT5-SD | Edge | Refrigerator (Solid) | 5 cu.ft. | LED | — | View → |
| REF4P / REF4P-T | Perf. Plus | Refrigerator | 3.9 cu.ft. | LED / Touch | — | View → |
| REF5P / REF5P-T | Perf. Plus | Refrigerator | 4.5 cu.ft. | LED / Touch | — | View → |
| REF5i / REF5i-T | Infinity | Refrigerator | 4.5 cu.ft. | LED / Touch | ✅ | View → |
| REF5BBP-T | Perf. Plus | Blood Bank Fridge | 4.5 cu.ft. | Touchscreen | — | View → |
| FZR4P | Perf. Plus | Freezer | 3.9 cu.ft. | LED | — | View → |
| FZR4P-T | Perf. Plus | Freezer | 3.9 cu.ft. | Touchscreen | — | View → |
| FZR5P | Perf. Plus | Freezer | 4.5 cu.ft. | LED | — | View → |
| FZR5P-T | Perf. Plus | Freezer | 4.5 cu.ft. | Touchscreen | — | View → |
| FZR5PLP-T | Perf. Plus | Plasma Freezer | 4.5 cu.ft. | Touchscreen | — | View → |
| FZRVAC4P | Vaccine | Vaccine Freezer | 3.9 cu.ft. | LED | ✅ | View → |
| FZRVAC5P | Vaccine | Vaccine Freezer | 4.5 cu.ft. | LED | ✅ | View → |
👉 Related: Medical Refrigerator Temperature Monitoring Guide
Infinity Series Upright: The Flagship Line
The Infinity Series is Follett's premium line where variable speed compressor technology, 6-level plenum air distribution, and NSF/ANSI 456 certification converge. If you're selecting a Follett Infinity Series refrigerator or freezer, the main decisions are capacity (12, 19.7, or 24.6 cu.ft.) and interior configuration (shelves, baskets, or drawers).
Interior Configuration: Shelves vs Baskets vs Drawers
Follett Infinity uprights come in three interior configurations, this matters more than most buyers expect:
- 4S (4 Shelves): Most flexible, accommodates different-sized items. Good for mixed-inventory pharmacies.
- 6B (6 Baskets): Pull-out wire baskets for organized, drawer-like access. Pharmacy favorite for vaccine organization.
- 6D (6 Drawers): Full enclosed drawers for maximum organization and controlled access. Premium pharmacy and hospital settings.
Infinity Upright Refrigerators: All Models
| Model | Capacity | Interior | Specialty | Shop |
|---|---|---|---|---|
| REF12i | 12 cu.ft. | Shelves | General / Vaccine | View → |
| REF20i-4S | 19.7 cu.ft. | 4 Shelves | General / Vaccine | View → |
| REF20i-6B | 19.7 cu.ft. | 6 Baskets | Pharmacy Favorite | View → |
| REF20i-6D | 19.7 cu.ft. | 6 Drawers | Premium Pharmacy | View → |
| REF25i-4S | 24.6 cu.ft. | 4 Shelves | General / Vaccine | View → |
| REF25i-6B | 24.6 cu.ft. | 6 Baskets | Pharmacy Favorite | View → |
| REF25i-6D | 24.6 cu.ft. | 6 Drawers | Premium Pharmacy | View → |
| REFOMN12i | 12 cu.ft. | Shelves | Omnicell Compatible | View → |
| REFOMN20i | 19.7 cu.ft. | Shelves | Omnicell Compatible | View → |
Infinity Upright Freezers: All Models
| Model | Capacity | Wi-Fi | Specialty | Shop |
|---|---|---|---|---|
| FZR20i-4S | 19.7 cu.ft. | — | General / Vaccine | View → |
| FZR20i-4S (Wi-Fi) | 19.7 cu.ft. | ✅ | Vaccine + Remote Monitoring | View → |
| FZR20i-PL | 19.7 cu.ft. | — | Plasma (-30°C) | View → |
| FZR25i-4S | 24.6 cu.ft. | — | General / Vaccine | View → |
| FZR25i-4S (Wi-Fi) | 24.6 cu.ft. | ✅ | Vaccine + Remote Monitoring | View → |
| FZR25i-PL | 24.6 cu.ft. | — | Plasma (-30°C) | View → |
Browse the Full Infinity Series
Compare Infinity refrigerators and freezers side by side — shelves, baskets, drawers, Wi-Fi, and plasma configurations:
Double Door & High-Capacity (45 cu.ft.)
For regional pharmacies, hospital central pharmacies, and high-volume programs, Follett offers 45 cu.ft. double-door refrigerators in four configurations: laboratory/pharmacy shelves, pharmacy shelves (different layout), pharmacy drawers with touchscreen, and blood bank.
| Model | Config | Best For | Shop |
|---|---|---|---|
| REF45-LB | Lab/Pharmacy Shelves | Lab + pharmacy mixed use | View → |
| REF45-PH | Pharmacy Shelves | High-volume pharmacy | View → |
| REF45-PD | Drawers + Touchscreen | Premium pharmacy organization | View → |
| REF45-BB | Blood Bank Storage | Hospital blood bank | View → |
Blood Bank Refrigerators
Follett is one of the few medical refrigeration brands that offers a dedicated blood bank line across multiple form factors from 4.5 cu.ft. undercounter through 45 cu.ft. double-door. This is a meaningful differentiator: most competitors (Accucold, Summit, KoolMore) do not offer purpose-built blood bank models.
| Model | Capacity | Form Factor | Shop |
|---|---|---|---|
| REF5BBP-T | 4.5 cu.ft. | Undercounter | View → |
| REF20i-BB | 19.7 cu.ft. | Upright (Infinity) | View → |
| REF25i-BB | 24.6 cu.ft. | Upright (Infinity) | View → |
| REF45-BB | 45 cu.ft. | Double Door | View → |
Related category: Browse all blood bank refrigerators & plasma freezers
Pharmacy Combo Units: Fridge + Freezer in One
Pharmacy combo units solve a common space problem: you need both refrigerated and frozen storage, but you don't have room for two separate units. Follett offers three sizes with independent temperature zones.
| Model | Fridge | Freezer | Total | Shop |
|---|---|---|---|---|
| REFFZR9 | 6.3 cu.ft. | 2.8 cu.ft. | 9.1 cu.ft. | View → |
| REFFZR16 | 11.5 cu.ft. | 4.8 cu.ft. | 16.3 cu.ft. | View → |
| REFFZR21-GS | 14.7 cu.ft. | 6.2 cu.ft. | 20.9 cu.ft. | View → |
ULT & Cryogenic Freezers (-86°C to -150°C)
Follett's ultra-low temperature lineup covers three technology tiers: TwinGuard (dual compressor, -86°C uprights), VIP Eco (single compressor, -86°C), and cryogenic (-150°C chest). If sample protection is your primary concern, TwinGuard's dual-compressor fail-safe is the strongest option.
| Model | Capacity | Temp | Technology | Form | Shop |
|---|---|---|---|---|---|
| FZRDR13-ULT | 12.7 cu.ft. | -86°C | TwinGuard Dual | Upright | View → |
| FZRDR19-ULT | 18.6 cu.ft. | -86°C | TwinGuard Dual | Upright | View → |
| FZRDR26-ULT | 25.7 cu.ft. | -86°C | TwinGuard Dual | Upright | View → |
| FZR19-ULT-115 | 18.6 cu.ft. | -86°C | VIP Eco | Upright | View → |
| FZRC3-ULT-115 | 3.0 cu.ft. | -86°C | VIP Eco | Chest | View → |
| FZRC25-ULT-220 | 25.3 cu.ft. | -86°C | — | Chest | View → |
| FZRC8-220 | 8.2 cu.ft. | -150°C | Cryogenic | Chest | View → |
Compare across ULT brands: Ultra-Low (ULT) Freezers at MediDepot
👉 Related: Medical Freezer Temperature Ranges: -20°C, -40°C, -80°C Explained
Specialty: Plasma Freezers, Chillers & Lab Freezers
| Model | Capacity | Temp | Type | Shop |
|---|---|---|---|---|
| FZR8-PC | 7.5 cu.ft. | -40°C to +30°C | Plasma Chiller | View → |
| FZRDCMD17 | 16.9 cu.ft. | -40°C | Dual Chamber Biomedical | View → |
| FZRMD24 | 24.4 cu.ft. | -30°C | Lab Freezer (Manual Defrost) | View → |
Ordering & Smart Solutions
MediDepot is an authorized Follett dealer. Warranty across the Follett medical line: 2 years parts & labor + 5 years compressor. If you're building a cold storage program or standardizing multiple units, our team can help with institutional pricing, multi-unit configurations, and quote support.
Need Help With Budget, Coverage, or Peace of Mind?
These tools can help you plan purchases and reduce risk:
Not Sure Which Follett Model Fits Your Facility?
Request a quote with your storage requirements and space constraints. We'll help you shortlist the right Follett series and configuration.
Explore Related MediDepot Guides
- Navigating CDC Vaccine Storage Requirements
- Medical Refrigerator Temperature Monitoring Guide
- Medical Freezer Temperature Ranges Explained
- ULT Freezer Cost of Ownership & Backup Plan
- Medical Refrigerator Locks: Optional or Essential?
- Voltage Compatibility & Electrical Requirements
External References
- Follett Official — Pharmacy Refrigeration
- NSF/ANSI 456 Standard (ANSI Webstore)
- CDC Vaccine Storage & Handling Toolkit (PDF)
Frequently Asked Questions (FAQ)
Q1: What is Follett Infinity Series?
The Infinity Series is Follett's premium medical refrigeration line featuring patented variable speed compressor technology. Unlike fixed-speed compressors that cycle on and off, Infinity units continuously adjust cooling output for ±1°C temperature consistency, lower energy use, and quieter operation. Available as undercounter and upright refrigerators and freezers, with NSF/ANSI 456 certification and optional Wi-Fi remote monitoring.
Q2: What is the difference between Follett Performance Plus and Infinity Series?
Performance Plus uses a standard fixed-speed compressor with LED or touchscreen controls—reliable, mid-range pharmacy and clinic storage. Infinity Series adds the patented variable speed compressor, 6-level plenum air distribution, and Wi-Fi monitoring capability. Choose Performance Plus for budget-friendly reliability; choose Infinity for the highest temperature precision and remote monitoring.
Q3: Which Follett models are NSF/ANSI 456 certified?
NSF/ANSI 456 certified models include: FZRVAC2 (countertop vaccine freezer), FZRVAC4P and FZRVAC5P (undercounter vaccine freezers), and all Infinity Series uprights (REF12i through REF25i, FZR20i through FZR25i). Browse all: NSF/ANSI 456 Certified Units at MediDepot.
Q4: Does Follett offer Wi-Fi remote monitoring?
Yes. Select Infinity Series models (look for "Wi-Fi" in the product name) include a network interface card for cloud-based temperature monitoring and alarm forwarding. Available on FZR20i-4S (Wi-Fi) and FZR25i-4S (Wi-Fi) freezer models.
Q5: What is Follett TwinGuard technology?
TwinGuard is Follett's dual-compressor system used in FZRDR-series ULT freezers (-86°C). Two independent compressors operate simultaneously; if one fails, the other maintains protective temperatures, providing critical time for service response and sample protection.
Q6: What is the difference between REF20i-4S, REF20i-6B, and REF20i-6D?
Same capacity (19.7 cu.ft.), same variable speed technology, different interior configurations. 4S = 4 adjustable shelves (most flexible). 6B = 6 pull-out wire baskets (organized access, pharmacy favorite). 6D = 6 enclosed drawers (maximum organization, premium pharmacy settings).
Q7: Does Follett make blood bank refrigerators?
Yes. Follett is one of the few medical brands with a dedicated blood bank line across four form factors: REF5BBP-T (4.5 cu.ft. undercounter), REF20i-BB (19.7 cu.ft.), REF25i-BB (24.6 cu.ft.), and REF45-BB (45 cu.ft. double door). Browse: Blood Bank Refrigerators at MediDepot.
Q8: What is a pharmacy combo refrigerator/freezer?
A pharmacy combo combines a refrigerator and freezer in a single cabinet with independent temperature zones. Follett offers three sizes: REFFZR9 (9.1 cu.ft. total), REFFZR16 (16.3 cu.ft.), and REFFZR21-GS (20.9 cu.ft.). Ideal for pharmacies that need both refrigerated and frozen storage without the footprint of two separate units.
Q9: How does Follett compare to Accucold?
Accucold (by Felix Storch) is positioned as broad, accessible medical refrigeration with strong NSF 456 coverage. Follett differentiates with patented variable speed compressor technology, 6-level plenum air distribution, Wi-Fi monitoring, blood bank-specific models, pharmacy combos, and TwinGuard ULT freezers. Both are NSF 456 certified for vaccine storage. MediDepot carries both brands: Accucold Collection.
Q10: Does MediDepot carry all Follett models?
MediDepot stocks 55+ Follett medical refrigeration models, including countertop, undercounter, Infinity Series uprights, double-door, blood bank, pharmacy combos, plasma freezers, TwinGuard ULT, VIP Eco ULT, and cryogenic units. Browse: Follett Medical Refrigeration at MediDepot.
Get a Custom Quote for Your Facility
Whether you need a countertop vaccine freezer or a 45 cu.ft. double-door pharmacy refrigerator, we can help you confirm the right Follett model and configuration.
*All technical specifications and workflow recommendations reflect general laboratory practice guidance. Always follow your manufacturer's Instructions for Use (IFU), your facility's Standard Operating Procedures (SOPs), and any applicable regulatory requirements for your sample type and application.
**Reviewed for workflow practicality by MediDepot Clinical Support Team. Always follow manufacturer instructions and your facility protocol.
***Disclaimer: This content is for informational purposes only and does not constitute medical advice. Always consult your physician, healthcare provider, or qualified medical professional before using any medical products or following health-related guidance. MediDepot products do not diagnose, treat, cure, or prevent any medical condition.