Case Study: The District at South Jordan Multi-Tenant Retail Commercial Rooftop Unit Replacement

Address area: The District mixed-use retail development, South Jordan, UT 84095 (specific building confidential per property manager request). Project completion: February 2026 completed before spring shopping season. Scope: Replacement of four aging 7.5–10 ton commercial rooftop units serving multi-tenant retail commercial building including retail apparel store, quick-serve restaurant, hair salon, and specialty retailer with widely varying operational schedules, refrigeration equipment coordination for restaurant tenant, and holiday retail season avoidance in scheduling. This case study documents multi-tenant coordination requirements, phased replacement scheduling avoiding November-December retail peak, tenant-specific operational considerations, and property manager coordination protocols. This case study differs from earlier commercial rooftop case studies (Riverton City Park restaurant single-unit R-22 to R-410A transition emergency, Thanksgiving Point professional office three-unit planned replacement, Silicon Slopes tech corridor six-unit mission-critical) by presenting mixed-use retail multi-tenant application with distinct tenant coordination challenges and seasonal timing considerations specific to retail industry.

The District Mixed-Use Development Context

Property Overview

The District at South Jordan mixed-use development context: major mixed-use retail development at the intersection of South Jordan Parkway and Bangerter Highway near I-15 Exit 297, opened in phases from 2007 through 2013, features approximately 90 retail tenants across shopping, dining, entertainment, and services categories, anchored by major retailers and cinema entertainment, and represents primary retail destination for South Jordan and southwestern Salt Lake Valley residents.

Client Property Context

Client property context: single retail building within The District development housing four tenant spaces — (1) national women’s apparel retailer 3,200 sq ft with standard retail operations 10 AM-9 PM Monday-Saturday and 11 AM-6 PM Sunday; (2) quick-serve restaurant 2,400 sq ft with extended hours 10 AM-10 PM daily plus refrigeration equipment operating 24/7; (3) full-service hair salon 1,800 sq ft with hours 9 AM-8 PM Tuesday-Saturday and closed Sunday-Monday, elevated latent load from wash stations and specialty ventilation for chemical services; (4) specialty gift retailer 2,200 sq ft with seasonal variation in operational hours, particularly extended holiday season November-December operating hours. Total 9,600 sq ft with individual tenant space HVAC requirements.

Existing HVAC Assessment

Existing commercial rooftop HVAC assessment identifying replacement scope: (1) four Lennox Landmark LGH120 series rooftop units installed 2007 during original tenant build-out, 18 years old at replacement evaluation with all units at or beyond typical commercial rooftop service life, (2) UNIT 1 (apparel retailer) — 10-ton package unit, functional but efficiency degradation and multiple recent service calls, (3) UNIT 2 (quick-serve restaurant) — 10-ton package unit with elevated failure rate given restaurant load (cooking equipment heat, extended hours, elevated humidity), highest priority replacement, (4) UNIT 3 (hair salon) — 7.5-ton package unit with specialty ventilation coordination for chemical services (color processing, permanent wave), (5) UNIT 4 (specialty retailer) — 7.5-ton package unit, functional but similar age indicators. Property manager priority replacement of all four units simultaneously (vs staged over multiple years) for coordinated maintenance approach and operational efficiency improvement.

Retail Industry Scheduling Considerations

Retail Season Timing

Retail industry seasonal timing considerations critical to project scheduling: (1) NOVEMBER-DECEMBER HOLIDAY SEASON — retail industry generates 20-30% of annual revenue during November-December holiday shopping season, business disruption during this period causes disproportionate financial impact vs other periods, project scheduling absolutely avoids this window; (2) SEPTEMBER-OCTOBER PRE-HOLIDAY BUILDUP — retailers stock inventory and prepare for holiday season during this period, moderate business impact tolerance; (3) JANUARY-FEBRUARY POST-HOLIDAY LULL — typically lowest retail traffic period of year, ideal window for major HVAC work with lowest business disruption; (4) MARCH-MAY SPRING SEASON — moderate retail activity building through spring, acceptable for HVAC work with tenant coordination; (5) JUNE-AUGUST SUMMER SEASON — back-to-school shopping traffic building in July-August, moderate business impact tolerance.

Project Timing Selection

Project timing selection based on retail scheduling considerations:

• Original property manager request: Complete project before Memorial Day 2026 to have all units operational before summer cooling season peak
• Retail season avoidance: Must complete before November 2025 or begin after January 2026, target window January-February 2026 selected
• Weather considerations: Winter weather affects rooftop work capability but Utah January-February typically provides adequate working windows between weather events
• Selected timeline: January-February 2026 with 4-week project duration (one unit per week over 4 weeks)
• Contingency buffer: Timeline provides 2-3 week buffer before March 2026 when spring retail traffic begins building

Individual Tenant Coordination

Individual tenant coordination requirements identified during pre-project meetings:

• Apparel retailer: Prefers Monday work day (typically lowest weekday traffic for apparel retail), 7 AM-11 AM early morning start acceptable before 10 AM opening, avoid Friday-Sunday
• Quick-serve restaurant: Health code implications for kitchen operation during ceiling work, prefers Tuesday-Wednesday work day (lower restaurant volume), coordination required with kitchen equipment protection during work, must maintain refrigeration continuity
• Hair salon: Client appointments scheduled 7-14 days in advance, requires 2-week advance notice for schedule coordination, prefers Monday work (salon closed), Tuesday acceptable with morning-only work
• Specialty retailer: Flexible on weekday scheduling, prefers minimize weekend impact, no strong preference within Monday-Thursday window

Manual N Load Calculation by Tenant

Tenant-Specific Load Calculation

Manual N commercial load calculation reflecting tenant-specific requirements:

• Unit 1 (Apparel retailer, 3,200 sq ft): Cooling load 62,400 BTU/hr sensible + 8,800 BTU/hr latent, standard retail load with occupancy 12-18 during peak hours plus retail lighting and display equipment, heating load 68,200 BTU/hr
• Unit 2 (Quick-serve restaurant, 2,400 sq ft): Cooling load 84,600 BTU/hr sensible + 18,400 BTU/hr latent, elevated sensible from cooking equipment (fryers, grills, ovens) and elevated latent from dishwashing area humidity plus cooking moisture, heating load 52,400 BTU/hr
• Unit 3 (Hair salon, 1,800 sq ft): Cooling load 42,200 BTU/hr sensible + 14,600 BTU/hr latent, moderate sensible with elevated latent from wash stations and chemical service ventilation coordination, heating load 44,800 BTU/hr
• Unit 4 (Specialty retailer, 2,200 sq ft): Cooling load 44,800 BTU/hr sensible + 6,200 BTU/hr latent, standard retail load with modest lighting and display equipment, heating load 48,600 BTU/hr
• Building total: Cooling 234,000 BTU/hr sensible + 48,000 BTU/hr latent (~24 tons cooling), heating 214,000 BTU/hr

ASHRAE 62.1 Ventilation Requirements

ASHRAE 62.1 ventilation requirements by tenant type reflecting different occupancy and use category:

• Retail sales (apparel and specialty): 7.5 CFM per person + 0.06 CFM per sq ft, retail category standard requirements
• Restaurant dining/kitchen (quick-serve): Elevated requirements including 7.5 CFM per person dining + kitchen exhaust make-up air coordination
• Salon (hair salon): Elevated requirements including chemical service ventilation per specific product requirements, typically 15 CFM per operator plus wash area exhaust

Equipment Selection

Carrier Weathermaker Series Selection

Carrier Weathermaker series selection replacing legacy Lennox equipment (property manager decision based on service history):

• Unit 1 (Apparel): Carrier 48TCED12 10-ton nominal cooling, 220,000 BTU/hr gas heat, IEER 14.5 with two-stage scroll compressor
• Unit 2 (Restaurant): Carrier 48TCED12 10-ton nominal cooling with enhanced humidity control features, 220,000 BTU/hr gas heat, restaurant-specific application considerations
• Unit 3 (Salon): Carrier 48TCED09 7.5-ton nominal cooling, 180,000 BTU/hr gas heat, with specialty ventilation integration for chemical services
• Unit 4 (Specialty): Carrier 48TCED09 7.5-ton nominal cooling, 180,000 BTU/hr gas heat, standard retail configuration

Restaurant-Specific Considerations

Restaurant-specific equipment considerations for quick-serve tenant:

• Elevated humidity capability: Enhanced humidity control features handling elevated latent load from cooking operations and dishwashing
• Corrosion resistance: Coated coils providing extended service life in restaurant environment where cooking exhaust residue can accelerate coil corrosion
• Refrigeration equipment coordination: Coordination with independent restaurant refrigeration equipment (walk-in cooler, freezer, prep table refrigeration) which operates independently of HVAC but shares building electrical service
• Extended operating hours: Restaurant 10 AM-10 PM daily represents 84 hours/week vs typical retail 60 hours/week, longer expected operating hours factored into equipment selection
• Grease exhaust considerations: Independent grease exhaust hood system operates separately from HVAC but coordination needed during work to avoid conflicts

Salon-Specific Considerations

Salon-specific equipment considerations for hair salon tenant:

• Chemical service ventilation: Enhanced ventilation for color processing and permanent wave services releasing volatile compounds (peroxide, ammonia derivatives, other salon chemistry)
• Elevated latent load: Wash stations and rinse operations create sustained humidity load requiring proper dehumidification capacity
• Air quality requirements: Salon workers exposed to chemical products over long shifts, air quality standards higher than general retail
• Zone coordination: Salon interior may benefit from small-scale zoning between chemical service area and retail waiting area to isolate air quality impact

Phased Replacement Execution

4-Week Timeline

Phased replacement 4-week timeline (one unit per week):

• Week 1 (Unit 2 restaurant replacement): Highest priority given restaurant equipment age and elevated failure rate, Tuesday-Wednesday scheduled for lower restaurant volume, refrigeration equipment protection coordination, kitchen closure minimized to necessary hours
• Week 2 (Unit 4 specialty retailer replacement): Monday-Tuesday scheduled with flexible retailer accommodation, lower business impact given retailer flexibility
• Week 3 (Unit 1 apparel retailer replacement): Monday scheduled for lowest apparel retail traffic, early morning start 7 AM-11 AM before 10 AM opening minimizing shopping hours impact
• Week 4 (Unit 3 hair salon replacement): Monday scheduled during salon closure day, 2-week advance notice provided for client appointment coordination

Property Manager Communication Protocol

Property manager communication protocol during project:

• Weekly project status: Weekly status reports to property manager covering completed work, upcoming work, tenant coordination status, and any issues requiring attention
• Tenant impact notifications: Advance notification to each tenant 48 hours before their scheduled work window with specific arrival time and expected duration
• Emergency contact: Property manager and tenant emergency contact protocols established for any project scenarios requiring immediate attention
• Documentation: Comprehensive project documentation including equipment specifications, warranty registration, commissioning readings, and completion certificates for property manager records

Weather Contingency

Winter weather contingency planning: Utah January-February weather typically provides adequate working windows but severe weather (snow, high winds) can affect rooftop work. Weather monitoring 5-day forecast with rescheduling capability for severe weather events. Weekend backup availability if weather affects planned weekday work windows. Snow removal coordination with property maintenance for rooftop access during winter conditions.

Crane Operation

Crane operation coordination: 40-ton hydraulic crane required for 10-ton unit lifting (Unit 1 apparel retailer and Unit 2 restaurant), parking lot closure coordination with property manager during crane operation windows (typically 4-6 hours per unit), and coordination with adjacent tenants for parking impact minimization. 25-ton crane adequate for 7.5-ton units (Unit 3 salon and Unit 4 specialty).

Commissioning Verification

Refrigerant and Gas Verification

Refrigerant system commissioning across all four units:

• Vacuum: 380-420 microns achieved on each unit
• Refrigerant charge: R-410A per manufacturer specification with altitude adjustment for South Jordan 4,400 ft
• Subcooling and superheat: Within manufacturer specification on each unit

Gas heat combustion analyzer verification (all four units gas-heated):

• CO air-free: 44-58 ppm range across four units
• Stack temperature: 380-420°F range
• O2: 7.6-8.4% range
• Combustion efficiency: 79.4-80.6% range

Tenant-Specific Verification

Tenant-specific commissioning verification:

• Restaurant (Unit 2): Elevated humidity condition simulation verifying humidity control capability, coordination with restaurant kitchen ventilation preventing back-pressure issues, refrigeration equipment continued operation verified throughout replacement
• Salon (Unit 3): Chemical service ventilation verification with salon products testing, air quality verification, zone coordination testing if zoning implemented
• Retail (Units 1 and 4): Standard occupied cooling and heating verification during business hours, thermostat setpoint verification with retail operational patterns

Property Manager Outcome

Business Continuity Success

Business continuity success: All four tenants maintained normal business operations throughout 4-week project with only minimal weekday morning/monday closure impact, no tenant reported significant customer complaint related to HVAC work, restaurant refrigeration equipment continuous operation maintained without disruption, and salon appointment scheduling successful with advance notice coordination.

Energy Efficiency Improvement

Energy efficiency improvement verified through Rocky Mountain Power billing analysis: approximately 24% reduction in electric consumption year-over-year first cooling season comparison, driven by modern IEER 14.5 equipment vs degraded legacy equipment, two-stage operation providing part-load efficiency, and proper commissioning quality.

Property Manager Commercial Maintenance Agreement

Property manager Commercial Maintenance Agreement enrolled at $3,800/year for four-unit coverage: quarterly filter replacement across all four units, semi-annual comprehensive tune-ups timed to avoid retail peak seasons (spring tune-up March, fall tune-up September), tenant-specific service considerations (restaurant grease coordination, salon chemical service considerations), priority emergency response with same-day dispatch, and property manager account management with consolidated reporting across four tenant units.

Frequently Asked Questions

How does retail industry scheduling affect commercial HVAC replacement?

Retail industry seasonal patterns create specific scheduling considerations for commercial HVAC work: (1) NOVEMBER-DECEMBER HOLIDAY SEASON — retail industry generates 20-30% of annual revenue during this period, business disruption produces disproportionate financial impact, HVAC replacement projects absolutely avoid this window; (2) BLACK FRIDAY THROUGH NEW YEAR — approximately 6-week peak retail window with continuous high traffic, no acceptable time for major HVAC disruption; (3) JANUARY-FEBRUARY POST-HOLIDAY LULL — typically lowest retail traffic period providing ideal HVAC project window, temperatures cool enough to reduce cooling emergency risk; (4) SPRING PLANNING — retailers plan spring inventory and merchandising, moderate impact tolerance for HVAC work; (5) SUMMER SEASON — back-to-school traffic building July-August, timing considerations; (6) SEPTEMBER-OCTOBER PRE-HOLIDAY BUILDUP — retailers stock and prepare for holidays, moderate tolerance; (7) TENANT-SPECIFIC PATTERNS — different retail categories have different peak seasons, apparel differs from home goods differs from electronics; (8) RESTAURANT VS RETAIL PATTERNS — restaurant tenants have less pronounced seasonal peaks than retail tenants, more consistent year-round volume; (9) MULTI-TENANT COORDINATION — project scheduling in multi-tenant buildings must accommodate individual tenant patterns; (10) FLEXIBILITY VALUE — HVAC contractor scheduling flexibility to accommodate retail patterns valuable, contractors requiring rigid scheduling may not match retail tenant needs. District at South Jordan project scheduled January-February 2026 avoiding holiday season with successful business continuity outcome.

How do multi-tenant HVAC replacements handle different tenant types?

Multi-tenant commercial HVAC replacements accommodate distinct tenant type requirements: (1) TENANT CATEGORIZATION — retail, restaurant, salon, medical, office, service all have different operational patterns, load requirements, ventilation needs, and coordination requirements; (2) INDIVIDUAL EQUIPMENT SELECTION — tenant-specific equipment selection matching load and application needs (restaurant humidity control, salon chemical ventilation, retail standard); (3) SCHEDULE ACCOMMODATION — different tenant preferences on work timing (restaurants prefer non-meal-service hours, salons prefer closure days, retail prefers non-peak hours); (4) COORDINATION COMPLEXITY — multi-tenant coordination substantially more complex than single-tenant projects requiring project management dedicated to tenant relationship management; (5) LOAD VARIATION — tenant loads vary dramatically (restaurant 30-40 BTU/sq ft cooling vs retail 20-25 BTU/sq ft), equipment sizing must match specific tenant needs; (6) SPECIALTY VENTILATION — restaurant kitchen exhaust make-up air, salon chemical service ventilation, medical office higher outdoor air percentages all require tenant-specific integration; (7) OPERATIONAL HOURS — restaurant 84+ hours/week vs retail 60 hours/week affects equipment sizing and service life expectations; (8) PROPERTY MANAGER ROLE — property manager typically owns building HVAC infrastructure with tenant participation in decision-making for tenant-specific requirements; (9) LEASE CONSIDERATIONS — HVAC maintenance and replacement responsibilities defined in tenant leases affecting who pays for what components and how coordination occurs; (10) LONG-TERM RELATIONSHIP — multi-tenant HVAC service relationships benefit from continuity across tenant changes, single HVAC contractor across property enables consistent service standards. District at South Jordan project accommodated four distinct tenant types with successful coordination.

How does restaurant HVAC differ from other commercial applications?

Restaurant commercial HVAC applications have distinct requirements compared to other commercial applications: (1) COOKING EQUIPMENT HEAT LOAD — kitchen cooking equipment (fryers, grills, ovens, ranges) produces substantial sensible heat load requiring elevated cooling capacity; (2) DISHWASHING HUMIDITY — dishwashing operations produce elevated latent load requiring enhanced humidity control capacity beyond typical commercial cooling; (3) COOKING MOISTURE — steam and moisture from food preparation contributes to latent load in kitchen and dining areas; (4) EXTENDED OPERATING HOURS — typical restaurant 84+ hours/week vs office 40-50 hours/week or retail 60-70 hours/week, elevated equipment operating hours affect service life; (5) GREASE EXHAUST COORDINATION — dedicated grease exhaust hood system for cooking equipment operates independently of HVAC but requires make-up air coordination; (6) MAKE-UP AIR REQUIREMENTS — grease exhaust removal requires equivalent make-up air introduction, dedicated make-up air unit or HVAC ventilation coordination; (7) CORROSION EXPOSURE — cooking exhaust contains grease, salts, and other corrosive elements that can accelerate HVAC coil corrosion, coated coils and enhanced cleaning schedules recommended; (8) REFRIGERATION EQUIPMENT COORDINATION — walk-in coolers, freezers, and prep table refrigeration operate independently but share electrical service with HVAC, load coordination important; (9) HEALTH CODE IMPLICATIONS — HVAC work in restaurant kitchen environments requires health code compliance with proper protection of food preparation areas during service; (10) VENTILATION CAPACITY — ASHRAE 62.1 restaurant category requirements elevated compared to retail, additional outdoor air ventilation capacity required. District at South Jordan restaurant unit (Unit 2) selected with restaurant-specific considerations including enhanced humidity control and corrosion-resistant coils.

Why replace all four units simultaneously instead of staging over years?

Simultaneous multi-unit replacement versus staged approach analysis considers multiple factors: (1) SIMULTANEOUS REPLACEMENT ADVANTAGES — single mobilization for crane operations, materials logistics, and project management reducing per-unit cost; uniform equipment across property simplifying maintenance and service; predictable service life across all units enabling coordinated future replacement planning; consistent commissioning quality across property; single warranty registration period for all units; (2) SIMULTANEOUS REPLACEMENT DISADVANTAGES — larger capital expenditure at single point requiring property manager budget accommodation; tenant coordination complexity requiring coordinated schedule across multiple tenants; longer overall project duration (4 weeks vs single-unit replacement); (3) STAGED REPLACEMENT ADVANTAGES — smaller annual capital expenditure spreading budget impact; ability to prioritize highest-failure-risk units first; tenant coordination simpler with single-unit at a time; (4) STAGED REPLACEMENT DISADVANTAGES — higher per-unit cost from multiple mobilizations; mixed equipment across property complicating maintenance; staggered warranty periods complicating future planning; older units continuing to fail while newer units operate; (5) DISTRICT AT SOUTH JORDAN DECISION — property manager selected simultaneous replacement based on all four units at similar age with similar failure risk, budget accommodation available, coordinated approach preferred for long-term property management simplicity; (6) EQUIPMENT AGE CONSIDERATION — when equipment ages differ significantly, staged approach may be appropriate replacing oldest units first while retaining younger units until end-of-life; (7) FAILURE RISK ASSESSMENT — when specific units have elevated failure risk while others operate reliably, prioritized replacement may be appropriate; (8) PROPERTY OWNERSHIP CONSIDERATION — property owners planning to sell may prefer staged approach spreading expense over ownership period; (9) TENANT MIX STABILITY — stable long-term tenants may support simultaneous replacement with tenant participation, high-turnover tenant properties may prefer staged approach; (10) OPERATIONAL EFFICIENCY GAIN — simultaneous replacement enables immediate property-wide efficiency benefit vs incremental gains from staged approach. District at South Jordan property manager selected simultaneous approach with successful outcome.

What does the Commercial Maintenance Agreement include for retail multi-tenant properties?

Commercial Maintenance Agreement scope for four-unit multi-tenant retail property at $3,800/year: (1) QUARTERLY FILTER REPLACEMENT across all four units with tenant coordination for filter access; (2) SEMI-ANNUAL COMPREHENSIVE TUNE-UPS timed to avoid retail peak seasons (spring tune-up March pre-cooling, fall tune-up September pre-heating); (3) SPRING TUNE-UP SCOPE — refrigerant pressure verification with subcooling and superheat, condenser coil cleaning, evaporator coil inspection, blower motor amperage verification, economizer operation verification, condensate drain verification; (4) FALL TUNE-UP SCOPE — combustion analyzer readings on all heating-equipped units, heat exchanger inspection, gas piping verification, ignition system verification, safety limit switch testing; (5) TENANT-SPECIFIC CONSIDERATIONS — restaurant grease coordination and corrosion inspection, salon chemical service ventilation verification, retail standard scope; (6) PRIORITY EMERGENCY RESPONSE — same-day dispatch for tenant emergencies during business hours, after-hours emergency for restaurant refrigeration coordination scenarios; (7) 15% PARTS DISCOUNT for component service scenarios during coverage period; (8) DOCUMENTATION — comprehensive documentation with property manager account summary reports; (9) TENANT COORDINATION — direct tenant communication for service coordination with property manager notification, tenant-specific service considerations documented; (10) ANNUAL EQUIPMENT CONDITION REPORT — year-end summary for all four units enabling proactive replacement planning; (11) PROPERTY WALK-THROUGH annually with property manager reviewing service history and identifying optimization opportunities; (12) LEASE COORDINATION — assistance with lease-defined maintenance responsibilities where tenant-specific components covered under different arrangements. Multi-tenant Commercial Maintenance Agreement scope substantially more coordinated than single-tenant residential Comfort Club reflecting tenant coordination complexity.

Contact Bluffdale Heating & Air Conditioning

Multi-tenant commercial HVAC replacement for mixed-use retail properties with tenant coordination protocols and property manager account management, retail industry seasonal scheduling with November-December holiday season avoidance and January-February post-holiday project window optimization, individual tenant type accommodation including retail standard applications, restaurant applications with enhanced humidity control and corrosion-resistant coils and grease exhaust coordination, hair salon applications with chemical service ventilation for color processing and permanent wave services, and specialty retail with seasonal operational variation, Carrier Weathermaker 48TCED commercial packaged rooftop units 7.5-ton and 10-ton nominal capacity with IEER 14.5 two-stage scroll compressor operation, ASHRAE 62.1 ventilation requirement coordination by tenant type category, Manual N commercial load calculation reflecting tenant-specific requirements including elevated restaurant loads and elevated salon latent loads, phased 4-week replacement approach with one unit per week accommodating individual tenant scheduling preferences, 40-ton and 25-ton hydraulic crane operation for equipment lifting with parking lot coordination through property manager, Commercial Maintenance Agreement scope for multi-tenant properties with quarterly filter replacement and semi-annual comprehensive tune-ups timed to avoid retail peak seasons, and 24/7 emergency response all route through our office at 14659 S 855 W in Bluffdale serving the greater Salt Lake Valley including South Jordan The District mixed-use retail development.

• Emergency Line (24/7): (801) 610-6528
• Address: 14659 S 855 W bldg b 142, Bluffdale, UT 84065
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