Imagine your kitchen humming perfectly during Saturday night’s dinner rush—orders flying, tickets clearing, and then… the walk-in door won’t seal. That sinking feeling when warm air hits your produce isn’t just inconvenient; it’s a direct hit to your profits, your menu’s integrity, and your reputation. In today’s hyper-competitive foodservice landscape, a commercial refrigerator isn’t just an appliance; it’s the silent backbone of your operation. Choosing the wrong unit isn’t merely a capital expenditure—it’s a slow leak in your revenue stream, risking spoilage, failed health inspections, and operational chaos when you need stability most.
The stakes are higher than ever heading into 2026. Evolving energy regulations, sharper consumer focus on sustainability, and the relentless pressure to optimize every square foot of your space demand a smarter approach to refrigeration. Gone are the days of grabbing the largest unit that fits the budget. Today’s smart operator thinks beyond basic cooling—they consider predictive maintenance capabilities, carbon footprint, seamless integration with kitchen workflows, and resilience against increasingly volatile utility costs. Finding your perfect match requires a strategic blend of present-day pragmatism and future-proofing, turning a necessary purchase into a long-term competitive advantage. Let’s navigate the critical considerations together.
Top 10 Commercial Grade Refrigerators for Garage
Detailed Product Reviews
1. ICECASA 48" W Commercial Refrigerator Reach-in 36 Cu.ft 2 Solid Door Stainless Steel Commercial Refrigerator Fan Cooling for Restuarant, Bar, Shop, etc
Overview: This heavy-duty 36-cubic-foot reach-in refrigerator targets commercial kitchens and large households with dual solid doors, fan cooling, and intelligent temperature control (35℉–43℉). Its stainless steel construction, 6 adjustable shelves (90 lbs capacity each), and garage-ready design suit restaurants, food trucks, or bulk-storage homes.
What Makes It Stand Out: The decade-long service life promise and exceptional warranty—2 years full on-site maintenance plus 6 years compressor coverage—set it apart. The auto-closing door mechanism (below 90°) prevents energy loss, while the electric defrost system and fingerprint-resistant exterior enhance practicality. Garage compatibility without installation is rare for commercial units.
Value for Money: Priced competitively for commercial-grade capacity, it outperforms cheaper residential models in durability and cooling consistency. The energy-efficient compressor and included heavy-duty casters offset long-term operational costs, though residential users might find standalone home fridges cheaper for non-bulk needs.
Strengths and Weaknesses: Strengths: Robust warranty, uniform fan cooling, flexible shelving, and automatic door safety features. Weaknesses: Limited to refrigeration (no freezer), solid doors hinder visibility, and the 36 cu.ft may overwhelm small operations. Garage placement requires climate consideration.
Bottom Line: Ideal for commercial kitchens needing reliable refrigeration or large families prioritizing bulk storage, this unit justifies its cost with exceptional warranty coverage and intelligent energy-saving design—though verify space requirements before purchase.
2. Ferueo Commercial Refrigerator and Freezer Combo, 48" W 2 Door Dual Temperature Zones Freezers, 39 Cu.ft Commercial Refrigerators with 8 Adjustable Shelves for Restaurant Shop Bar
Overview: This 39-cubic-foot dual-zone unit combines a refrigerator (33℉–40℉) and freezer (-8℉–0℉) in one ETL-certified stainless steel cabinet. Designed for high-volume kitchens, it features 8 heavy-duty adjustable shelves (150 lbs each), independent digital controls, and commercial-grade mobility.
What Makes It Stand Out: True dual-zone precision with separate compressors eliminates cross-temperature issues—a rarity in combos. The fingerprint-resistant coating, auto-closing doors with 90° stop, and ETL certification ensure compliance and ease of use in busy environments. Seamless ice maker compatibility expands functionality.
Value for Money: At its price point, it delivers exceptional versatility for spaces needing both fridge and freezer capacity. The durable construction and energy-efficient cooling reduce long-term costs versus buying two separate units, though initial investment exceeds single-zone models.
Strengths and Weaknesses: Strengths: Independent temperature zones, massive shelf capacity, low-maintenance auto defrost, and mobility for tight kitchens. Weaknesses: No drainage tubing complicates condensation management, and the 48" width demands significant floor space.
Bottom Line: A top-tier solution for restaurants or bars requiring simultaneous fresh/frozen storage, offering unmatched dual-zone reliability and ETL-backed safety—worth the premium if space and budget allow.
3. 44"W ETL & DOE Certified 28 Cu Ft Commercial Merchandiser Refrigerators 2 Doors, Display Beverage Fridge with Built-in LED Light & Front LED Light,Double Glass Door Upright Business Retail Cooler
Overview: This 28-cu.ft glass-door merchandiser targets retail beverage display with double tempered glass, front/interior LED lighting, and a 32℉–50℉ cooling range. ETL/DOE certified, it features adjustable shelves, lockable doors, and a 5-year warranty for stores or cafes.
What Makes It Stand Out: Ultra-low energy consumption (1.86 kWh/24h) via pure copper compressor and high-density insulation slashes utility costs. The independent top light box for branding, combined with auto-defrost and HD glass visibility, boosts sales appeal while minimizing frost issues.
Value for Money: Its energy efficiency pays back the premium through reduced electricity bills—especially versus non-certified models. The 5-year warranty exceeds industry standards, though smaller operations might find compact fridges more cost-effective for limited displays.
Strengths and Weaknesses: Strengths: Exceptional energy savings, customizable lighting for marketing, easy mobility with locking casters, and clear product visibility. Weaknesses: Glass doors sacrifice insulation versus solid alternatives, and the 28 cu.ft may be excessive for micro-businesses.
Bottom Line: A compelling investment for retail spaces prioritizing eye-catching beverage displays and long-term operational savings, though best suited for establishments with consistent foot traffic to justify capacity.
4. Cintva ETL & DOE Certified Commercial Beverage Refrigerator, Commercial Display Fridge with Glass Door, Upright Merchandiser Refrigerator Cooler with Front LED Light for Stores, Restaurant, Office
Overview: This 28-cu.ft ETL-certified glass-door merchandiser offers precise 32℉–50℉ cooling for beverage or food display in stores and offices. Features include 4 adjustable shelves, front LED lighting, and a touchscreen temperature control panel, all backed by a 2-year warranty.
What Makes It Stand Out: The 38-decibel quiet operation ensures non-intrusive use in offices or cafes, while 30% higher cooling efficiency than standard models reduces energy strain. Customizable light boxes and automatic defrost enhance sales visibility without manual maintenance.
Value for Money: Competitive pricing for ETL/DOE certification and commercial durability makes it a smart mid-range choice. The low noise and efficient cooling justify costs versus cheaper uncertified units, though beverage-focused bars may prefer specialized coolers.
Strengths and Weaknesses: Strengths: Near-silent performance, flexible shelf configuration, robust warranty, and intuitive touchscreen controls. Weaknesses: Curbside delivery only complicates setup, and glass doors increase vulnerability to external temperature fluctuations.
Bottom Line: An excellent all-rounder for retail or office beverage displays needing quiet, certified reliability—opt for this if noise sensitivity and energy efficiency are priorities over heavy-duty freezer functionality.
5. Honeywell Beverage Refrigerator and Cooler, 116 Can Mini Fridge with Glass Door for Soda Beer or Wine for Office or Bar with Adjustable Removable Shelving, Commercial Grade
Overview: This compact 116-can capacity beverage cooler features a triple-pane glass door, digital thermostat, and slide-out shelving for offices or bars. Designed for soda, beer, or wine, its commercial-grade build includes adjustable legs and interior LED lighting.
What Makes It Stand Out: The triple-pane glass door provides superior insulation versus single-pane competitors, minimizing temperature fluctuations. Removable shelving and adjustable legs offer customization for uneven surfaces—uncommon in mini-fridges—while maintaining commercial durability.
Value for Money: Affordable for its “commercial-grade” label, it’s ideal for small spaces where full-size units are impractical. Though lacking advanced features like auto-defrost, its focused beverage storage justifies cost for offices or home bars needing reliable, space-efficient cooling.
Strengths and Weaknesses: Strengths: Space-saving design, triple-pane insulation for energy efficiency, and versatile shelving. Weaknesses: Limited capacity for high-volume use, basic digital controls without remote monitoring, and no warranty details provided.
Bottom Line: A practical, no-frills solution for low-to-moderate beverage storage in constrained environments—best for offices or small bars prioritizing simplicity over advanced tech, but verify warranty terms before purchasing.
6. Coolski 3 Door Commercial Refrigerator 82" W 72 Cu.ft Reach-in Stainless Steel Upright Commercial Refrigerator for Restuarant, Bar, Shop, Garage
Overview: The Coolski 3-door refrigerator delivers industrial-scale refrigeration for high-volume commercial settings like restaurants and bars, offering 72 cubic feet of storage across 12 heavy-duty adjustable shelves. Its stainless-steel build and advanced cooling system target demanding environments.
What Makes It Stand Out: Exceptional 72 cu.ft capacity with shelves supporting 210 lbs each ensures versatility for bulk storage. The R290 refrigerant compressor maintains precise 33°F–41°F temperatures, while the 202° door swing, automatic closure below 90°, and condensate evaporator eliminate drain needs—key for tight or mobile setups.
Value for Money: Priced competitively for its size, it outperforms smaller units in busy kitchens where space and durability are critical. The fingerprint-resistant steel and casters with brakes justify the investment over cheaper alternatives lacking commercial-grade mobility or security.
Strengths and Weaknesses: Strengths: Massive storage, robust construction, energy-efficient fan cooling, and smooth mobility. Weaknesses: Large footprint may suit only spacious kitchens; heavy doors could strain hinges over time in high-traffic areas.
Bottom Line: Ideal for restaurants needing heavy-duty, high-capacity refrigeration—it’s a reliable workhorse that balances space, durability, and smart features for long-term value in professional settings.
7. ICEVIVAL 6 Cu.Ft Commercial Refrigerators, Display Fridge with Double-Tempered Glass Door, Beverage Cooler for Bar, Office, Restaurant, Outdoor Beverage Refrigerator with Locking, Key & LED
Overview: The ICEVIVAL 6 cu.ft beverage fridge is a compact display unit designed for showcasing drinks in bars, offices, or outdoor venues. Its double-tempered glass doors and commercial-grade cooling prioritize visibility and consistent chill for beverages.
What Makes It Stand Out: UV-blocking double glass doors prevent cold air loss and fading while maintaining visibility—a rarity in budget display units. The near-silent 40dB operation suits noise-sensitive areas, and ETL/ISTA-6A certification ensures safe shipping and reliability for commercial use.
Value for Money: Outperforms basic beverage coolers with superior insulation and a 170W compressor that cuts energy costs. At its price point, the lockable security, adjustable shelves, and rapid 32°F–50°F cooling offer strong ROI for bars needing theft-resistant, attractive drink displays.
Strengths and Weaknesses: Strengths: Quiet operation, UV-protected glass, secure locking, and energy efficiency. Weaknesses: Limited 6 cu.ft capacity suits only beverage storage—not versatile for food; requires 24-hour upright setup before first use.
Bottom Line: A top pick for bars or offices wanting a stylish, quiet beverage display fridge—the glass doors and reliability make it worth the investment for dedicated drink cooling.
8. PEAKCOLD Single Door Commercial Refrigerator, 23 Cu. Ft., 29" W Stainless Steel Reach-In Upright Refrigerator, Adjustable Shelves, Auto Defrost, Digital Thermostat, Freestanding Industrial Fridge
Overview: PEAKCOLD’s 23 cu.ft single-door unit is a space-efficient refrigerator for smaller commercial kitchens, featuring digital precision and robust construction in a compact 29-inch footprint.
What Makes It Stand Out: Standout elements include a responsive digital thermostat (33°F–41°F), auto-defrost, and U.S.-backed 1-year on-site service. The door’s dual-mode design (self-closing under 90°, stays open beyond) optimizes energy savings during restocking in fast-paced environments.
Value for Money: Competitively priced for its class, it beats cheaper models with a 5-year compressor warranty and ETL/NSF compliance. The efficient R-290 refrigerant and white aluminum interior reduce long-term costs versus units with weaker insulation or shorter coverage.
Strengths and Weaknesses: Strengths: Excellent warranty support, quiet operation, easy-clean interior, and precise temperature control. Weaknesses: Smaller capacity limits use for high-volume kitchens; single door restricts accessibility during peak hours.
Bottom Line: Perfect for cafés or bakeries needing reliable, compact refrigeration—the digital control and stellar warranty deliver exceptional value for small-business operators.
9. Elite Kitchen Supply Commercial Upright Reach-in Refrigerator, ETL Restaurant 2 door Fridge Cooler Merchandiser, Auto-Defrost, stainless steel 55" W 49 cu. ft.
Overview: This 49 cu.ft ETL-certified refrigerator combines NSF-compliant safety with high-capacity storage for restaurants, bars, and commercial kitchens, emphasizing durability and precise cooling in a 55-inch footprint.
What Makes It Stand Out: ETL certification meets stringent commercial kitchen regulations, while the 6-year compressor warranty exceeds industry standards. The bottom-mounted compressor ensures quiet operation, and fan-forced circulation with digital controls (33°F–41°F) guarantees even cooling—critical for food safety.
Value for Money: Justifies cost with heavy-duty stainless construction and labor savings from auto-defrost. Though pricier than uncertified models, the extended warranty and energy-efficient 730W system offset expenses, especially where certifications are mandatory.
Strengths and Weaknesses: Strengths: Regulatory compliance, strong warranty, quiet performance, and spacious shelving. Weaknesses: Warranty voids for mobile setups (e.g., food trucks); stainless interior may show scratches over time.
Bottom Line: A smart buy for brick-and-mortar restaurants requiring certified, dependable refrigeration—the warranty and compliance features make it a low-risk, high-reliability investment.
10. CHUMART 54" W Commercial Refrigerator with 2 door Stainless Steel 49 Cu. Ft Reach-in Refrigerator 6 Adjustable shelves Fan Cooling Fridge for Restaurant, Commercial Kitchen, Shop, ETL Certification
Overview: CHUMART’s 49 cu.ft two-door refrigerator offers mid-sized commercial cooling with ETL certification, targeting restaurants and shops needing versatile storage in a 54-inch width.
What Makes It Stand Out: The Dixell digital thermostat enables precise temperature management (33°F–41°F), while R290 refrigerant and Embraco compressor ensure eco-friendly, powerful cooling. Fingerprint-free S/S430 steel and LED lighting enhance usability, and 90° auto-close doors conserve energy during frequent access.
Value for Money: Solid mid-tier value with 5-year compressor coverage. It undercuts premium brands but matches their core features (auto-defrost, casters), though casters feel less robust than competitors’. Ideal for budget-conscious buyers needing certified reliability.
Strengths and Weaknesses: Strengths: Excellent digital control, strong warranty, easy mobility, and ETL/DOE compliance. Weaknesses: Casters lack heavy-duty reinforcement; stainless interior may dent under extreme use.
Bottom Line: A dependable, certified workhorse for small restaurants—the balance of price, warranty, and precise cooling makes it a practical choice for everyday commercial use.
Understanding Your Core Operational Needs
Before stepping foot in a showroom or browsing catalogs, laser-focused self-assessment is non-negotiable. Your kitchen’s unique rhythm dictates the ideal refrigeration solution, not generic sales pitches.
Mapping Your Kitchen Workflow and Available Space
Conduct a detailed measurement audit before exploring options. Note not just the footprint but ceiling height, door swing clearance, and proximity to heat sources like ovens or dishwashers. Critically, map the flow of food from receiving to prep to service—where will staff access ingredients most frequently? Units placed awkwardly create bottlenecks. Ensure adequate space around the unit (typically 3-6 inches on sides/top for airflow) as mandated by manufacturers; cramming it against a wall traps heat, drastically reducing efficiency and lifespan.
Calculating True Capacity Requirements
Don’t fall into the trap of equating cubic feet with usability. Focus on usable storage volume for your specific inventory. Taller units maximize vertical space but require step stools for top shelves, slowing service. Consider container depth—standard hotel pans need specific shelf spacing. Factor in peak demand periods: does your brunch service require double the pastry stock? Account for future menu expansions. Underestimating leads to constant restocking and temperature fluctuations; overestimating wastes energy and valuable floor space.
Defining Your Temperature and Humidity Demands
Not all refrigeration needs are equal. Standard reach-ins (35-38°F) won’t suffice for delicate greens needing high humidity (90%+) or dairy requiring rock-solid 34°F stability. If you handle sushi, ice cream, or specialty cheeses, dedicated low-temp or variable-humidity units become essential. Clearly define the temperature range and humidity precision required for each major food category you store. This dictates compressor sizing, insulation quality, and internal airflow design—critical for food safety and quality preservation.
Prioritizing Energy Efficiency and Sustainability
With energy costs climbing and environmental regulations tightening significantly by 2026, efficiency isn’t just “nice-to-have”—it’s a core financial and operational imperative impacting your bottom line for the unit’s entire lifecycle.
Decoding Modern Energy Standards and Labels
Look beyond the basic Energy Star sticker. By 2026, regional regulations (like updated DOE standards) will mandate significantly higher efficiency thresholds, particularly for larger units. Understand metrics like Kilowatt-hours per day (kWh/day) under standardized test conditions—this is your real-world operating cost predictor. Compare units of similar size and type using this number; a seemingly cheaper unit with poor kWh/day can cost thousands more in electricity over 5 years.
Evaluating Advanced Compressor and Refrigerant Technologies
The heart of efficiency lies here. Variable-speed compressors (inverter tech) adjust cooling output precisely to demand, slashing energy use during off-peak hours compared to older on/off models. Pay close attention to the refrigerant type: R-290 (propane) and R-600a (isobutane) are rapidly becoming the norm due to ultra-low Global Warming Potential (GWP), replacing phased-out R-134a and R-404A. Ensure the unit uses an approved, future-proof refrigerant compliant with 2026 mandates to avoid premature replacement.
Integrating Smart Energy Management Features
Modern units offer sophisticated tools to minimize waste. Look for features like adaptive defrost cycles that run only when actually needed (based on door usage sensors), not on a fixed timer. Night blinds or automatic door closers on walk-ins prevent massive cold air loss during idle periods. Advanced controllers can integrate with building management systems, scheduling deeper cooling during off-peak electricity rates. These “set-and-forget” features deliver consistent savings with zero staff intervention.
Assessing Build Quality and Long-Term Durability
Commercial kitchens are brutal environments. Steam, grease, constant door slamming, and heavy loads demand industrial-grade construction. Cutting corners here means frequent breakdowns and costly downtime.
Inspecting Cabinet and Door Construction Integrity
Demand high-density polyurethane foam insulation (minimum 2-inch walls/floor/ceiling) for superior cold retention. Check door gaskets—magnetic, multi-point seals are essential for an airtight closure; cheap single seals fail quickly. Cabinet exteriors should be stainless steel (18-gauge minimum) for corrosion resistance against cleaning chemicals and impacts. Avoid painted or plastic-laminated exteriors in high-traffic zones—they chip and warp.
Evaluating Compressor and Component Reliability
The compressor is the most expensive part to replace. Research the brand reputation for the specific compressor model used—industrial-grade hermetic scroll compressors generally outlast cheaper reciprocating types in demanding settings. Check evaporator and condenser coil materials; copper-aluminum is common, but all-copper offers better longevity (though higher cost). Ensure condenser coils are accessible for cleaning—clogged coils are a top cause of failure.
Understanding Serviceability and Parts Availability
A unit is only as reliable as the support network. Ask your supplier about local technician training for the specific brand and typical parts lead times. Are critical components (like control boards) standardized across models for easier stocking? Units with complex, proprietary parts can mean weeks of downtime waiting for a specialty component. Prioritize brands with a strong, widespread service footprint in your region—this is crucial for minimizing operational disruption.
Embracing Smart Technology and Connectivity
The “dumb box” era is ending. By 2026, integrated intelligence offers unprecedented control, insight, and preventative capabilities, transforming refrigeration from a cost center into a data-driven asset.
Leveraging Remote Monitoring and Alerts
Real-time temperature monitoring via cloud platforms is now table stakes. Ensure the system provides instant, customizable alerts (SMS/email) for temperature excursions, door-left-open events, or power failures—before spoilage occurs. Historical data logging is vital for HACCP compliance and identifying subtle performance trends (like a failing fan motor) long before a catastrophic breakdown.
Utilizing Predictive Maintenance Capabilities
Advanced systems go beyond monitoring to prediction. By analyzing compressor run times, defrost cycles, and temperature stability patterns, AI-driven diagnostics can flag potential issues (e.g., “condenser coil efficiency dropping 15%—clean recommended”) weeks in advance. This shifts maintenance from reactive (costly emergency calls) to proactive (scheduled, efficient servicing), maximizing uptime and extending the unit’s life.
Integrating with Kitchen Management Ecosystems
Consider how the unit fits into your broader tech stack. Can it feed temperature data directly into your inventory management system? Does the alert system integrate with your staff communication platform? Future-proof units offer open APIs or compatibility with major kitchen management software, enabling automation (e.g., auto-adjusting cooling based on reservation volume forecasts) and holistic operational insights.
Navigating Installation and Total Cost of Ownership
The purchase price is merely the starting point. Smart operators calculate the true five-to-ten-year cost, factoring in installation complexity, energy consumption, maintenance, and potential downtime.
Planning for Professional Installation Requirements
Cutting corners on installation guarantees future problems. Proper leveling is critical for door seals and compressor longevity. Dedicated electrical circuits with correct voltage/amperage are non-negotiable—overloaded circuits cause premature failures. Ensure adequate clearance for airflow around condenser coils (often overlooked!). Factor in costs for potential modifications (reinforced flooring for walk-ins, dedicated circuit wiring) before finalizing your purchase decision.
Budgeting for Ongoing Maintenance and Service Contracts
Preventative maintenance is cheaper than emergency repairs. Factor in annual costs for professional coil cleaning, seal inspections, and system checks. Evaluate service contract options from the supplier or third parties—do they offer priority response times crucial for your operation? While contracts add upfront cost, they often include discounted parts and labor, providing predictable budgeting and faster resolution during failures.
Calculating the Real Five-Year Cost Equation
Build a simple TCO model: (Purchase Price) + (Installation) + (Estimated Annual Energy Cost x 5) + (Estimated Annual Maintenance Cost x 5). Compare this number across shortlisted units. A $1,000 cheaper unit might cost $2,500 more in electricity over five years. This holistic view reveals the genuinely economical choice, protecting your margins far into the future.
Frequently Asked Questions
Frequently Asked Questions
How much space should I leave around a commercial refrigerator for proper ventilation? Always follow the specific manufacturer’s specs, but generally allow 3-6 inches on the top and sides, and 1-3 inches at the back for condenser airflow. Blocking vents drastically reduces efficiency and can cause premature compressor failure.
Are smart features worth the extra investment for a small operation? Absolutely. Remote temperature alerts alone prevent costly spoilage events. Basic monitoring pays for itself quickly by avoiding even one major temperature excursion incident, especially for businesses with limited staff oversight.
What’s the biggest mistake operators make when sizing a walk-in cooler? Underestimating usable space and workflow. People focus on cubic feet but forget the space lost to structural framing, shelving, and the need for clear aisles. Measure your largest inventory items (pallets, sheet pans) and simulate the layout.
How can I verify a unit’s real energy consumption? Demand the kWh/day rating under standardized test conditions (like AHRI 1250) for units of similar size/type. Don’t rely solely on “Energy Star certified” claims; compare the actual kWh numbers side-by-side—it’s the clearest indicator of operating cost.
Is R-290 refrigerant safe for use in my kitchen? Yes, when installed correctly per safety codes (which include charge size limits and ventilation requirements). R-290 is highly efficient and has minimal environmental impact. Reputable manufacturers design units with rigorous safety protocols for its use.
How often should professional maintenance be performed? At minimum, schedule a comprehensive service (coil cleaning, seal check, refrigerant level, electrical inspection) twice a year. High-volume kitchens or units in dusty/greasy environments may need quarterly checks to maintain peak efficiency and reliability.
Can I install a larger unit later if my business grows? It’s highly discouraged. Electrical circuits, floor reinforcement (for walk-ins), and physical space are often hard constraints. Always factor in realistic 2-3 year growth potential during your initial sizing assessment to avoid costly and disruptive replacements.
What should I prioritize: stainless steel interior or exterior? Exterior stainless steel is critical for durability against impacts and cleaning chemicals. Interior stainless is ideal for hygiene and longevity but is a higher cost; some units offer stainless exteriors with durable, NSF-approved coated interiors suitable for many applications.
Do variable-speed compressors really save significant energy? Yes, significantly. They modulate cooling output to match the exact demand, avoiding the high startup surges of traditional compressors and running more efficiently at partial load (which is most of the time). Savings of 20-30%+ on energy use are common.
How do I ensure the unit will fit through my building’s doorways and hallways? Measure every potential path meticulously—the delivery route matters as much as the final location. Include stairwells, door frames, and tight corners. Many suppliers offer pre-installation site surveys specifically for this purpose; never skip this step.