Commercial HVAC installation and repair covers the specific equipment and application types found in commercial buildings across the south Salt Lake Valley: single-package rooftop units on strip mall retail, split systems on light commercial storefronts, packaged terminal air conditioners on hotel and multi-family installations, and building automation-integrated variable-air-volume systems on Class A office buildings. Equipment brands, sizing methodology, permit coordination, and service protocols all differ meaningfully from residential HVAC. This page walks through the specific commercial installation and repair scope: equipment types we install, sizing methodology using Manual N (commercial equivalent to residential Manual J), permit coordination for commercial installations, common commercial application types across the south Salt Lake Valley, and specific installation scenarios for restaurant, retail, office, medical office, and warehouse commercial buildings.
Single-package RTU is the most common commercial equipment type across strip mall retail, standalone restaurants, small office buildings, and light commercial applications. Package equipment integrates compressor, condenser, evaporator, blower, and controls in a single weatherproof cabinet mounted on a roof curb. Common capacities 3–25 tons per unit; larger applications use multiple units in parallel. Gas-electric configuration (gas heat, electric cooling) most common; heat pump configuration (electric heat pump plus electric backup) available. Detailed coverage on the rooftop units page.
Split systems on light commercial applications (small office, professional service storefronts, some retail) work similarly to residential split systems but with commercial equipment ratings. Outdoor condenser typically ground-mounted at back of building; indoor air handler or furnace in mechanical room. Common capacities 3–10 tons. Advantages: quieter operation than RTU (no rooftop equipment vibration), potentially longer equipment life due to easier service access, and lower initial cost than RTU on some applications. Disadvantages: refrigerant lineset routing requirements, less integrated economizer control than RTU, and different service scheduling versus RTU standard.
PTAC units are wall-mounted through-the-wall units typical on hotels, motels, multi-family apartment buildings, and some senior housing installations. Each unit provides independent heating and cooling for a single room or small unit. Common capacities 7,000–15,000 BTU/hr cooling with matched electric or heat pump heating. Advantages: individual unit metering possible, easy replacement without disrupting other units, and lower initial cost than centralized systems. Disadvantages: individual unit maintenance requirements across all units, potentially higher operating cost than efficient centralized systems, and typically lower efficiency than modern split or package equipment.
VAV systems on larger Class A office buildings, medical office buildings, and larger commercial installations use central air handling units feeding VAV boxes at each zone. Central AHU provides constant conditioned air supply; VAV boxes modulate airflow to each zone based on zone-specific thermostat calls. Building automation integration typical. Advantages: precise zone-by-zone comfort control, efficient operation across variable occupancy, and reduced central plant sizing versus fixed-volume systems. Disadvantages: higher initial cost, more complex commissioning requirements, and specialized service technician expertise required.
VRF systems use variable-speed compressor outdoor units connected to multiple indoor units (ducted or ductless) via refrigerant piping. Modern VRF systems (Trane, Carrier Toshiba, Lennox, Johnson Controls) provide simultaneous heating and cooling across different zones, high efficiency across variable load conditions, and modular expansion capability. Common on medical office buildings, larger office installations, and multi-tenant commercial applications where zone flexibility and efficiency matter.
ACCA Manual N is the commercial-specific load calculation methodology (residential equivalent is Manual J). Manual N calculation incorporates: building envelope specifications for commercial construction (typical R-13 to R-30 wall assemblies, R-30 to R-49 ceiling assemblies depending on climate zone), commercial occupancy schedules with peak, average, and off-peak load calculations, commercial internal load estimation (lighting, equipment, occupants at commercial density), ventilation rate compliance per ASHRAE 62.1 for the specific occupancy type, and altitude correction for Bluffdale’s 4,436 ft elevation.
ASHRAE 62.1 defines minimum ventilation rates for commercial occupancy types: office 5 cfm per person + 0.06 cfm/sq ft, retail 7.5 cfm per person + 0.12 cfm/sq ft, restaurant dining 7.5 cfm per person + 0.18 cfm/sq ft, medical office 15 cfm per person + 0.06 cfm/sq ft. Equipment sizing must satisfy both temperature load and ventilation air requirements. Correct calculation prevents undersized ventilation that produces IAQ complaints.
Bluffdale valley floor elevation reduces air density by roughly 15% versus sea level. Commercial equipment manufacturer specifications typically require input capacity derating for altitude. Trane, Carrier, Rheem, Lennox, York, and Bard commercial equipment all have manufacturer-specific altitude correction factors that must be applied for correct sizing.
Commercial installations must handle peak load conditions including: sunset west-facing solar load on office and retail buildings, restaurant dinner-hour cooking equipment heat plus dining occupancy, and simultaneous demand across multiple zones during high-occupancy periods. Peak load calculation methodology differs from residential average load approach.
Typical single 3–5 ton gas-electric single-package RTU serving individual leasable retail space. Ductwork typically drop ceiling with linear supply diffusers and return grilles. Economizer controls for cool-weather free cooling. Standard installation cost $14,000–$28,000 depending on capacity, controls, and roof access. Tenant improvement coordination with property owner and general contractor typical.
Restaurant HVAC coordinates: dining room conditioning (typical 5–10 ton RTU per dining space), kitchen makeup air unit for exhaust hood coordination, walk-in cooler and freezer refrigeration, and dishwash area exhaust. Salt Lake County Health Department permit coordination and FDA Food Code compliance. Typical restaurant HVAC installation cost $48,000–$180,000+ depending on facility size, cooking equipment scope, and refrigeration requirements.
Multiple RTU installations serving different building sections, or split system installations with dedicated indoor equipment for each tenant space. Building automation integration on premium installations for centralized control and energy management. Typical installation cost $60,000–$180,000+ depending on tenant improvement scope, controls integration, and equipment specification.
Medical office installations require: MERV 13 minimum filtration on all installations, HEPA supplementation on procedure rooms and immunocompromised patient areas, precise temperature control for patient comfort during procedures, ASHRAE 170 ventilation rate compliance for healthcare occupancy, and coordination with medical equipment power requirements. Typical installation cost $48,000–$140,000+ depending on facility scope.
Warehouse HVAC balances personnel comfort in office areas against product storage requirements in warehouse volumes. Common configuration: standard RTU serving office and receiving areas, larger-volume warehouse with limited conditioning (heating only for freeze protection, minimal or no cooling for standard storage), and dedicated conditioning for climate-controlled storage portions. Loading dock ventilation and infiltration management critical. Typical installation cost varies widely from $28,000 for basic office-only conditioning to $280,000+ for climate-controlled warehouse operations.
Small to mid-size multi-family installations (10–60 units) typically use PTAC units for individual apartment conditioning plus central RTU or split systems for common areas (lobbies, hallways, community rooms, offices). Larger multi-family installations may use central plant with hydronic distribution to unit-level heat pumps or fan coil units. Typical installation cost varies widely based on unit count and installation approach.
Commercial no-heat during winter or no-cool during summer produces business disruption cost meaningfully higher than repair cost. Emergency response scope includes: 2-hour business-hour response for service contract customers, 4-hour after-hours response for service contract customers, comprehensive diagnostic to identify root cause quickly, and expedited parts sourcing through manufacturer dealer inventory.
Commercial refrigerant leaks require EPA Section 608 compliance for refrigerant recovery, leak location identification and repair, and refrigerant recharge to manufacturer specification. Commercial systems using R-410A (standard modern) or R-454B (2025+ new installations) more economically repaired than R-22 legacy systems where refrigerant cost and phase-out make replacement typically preferred.
Commercial control system failures range from thermostat replacement on standalone RTU to complex building automation system troubleshooting on VAV and VRF installations. Diagnostic scope includes control voltage verification, communication signal analysis, and BAS protocol troubleshooting on integrated systems.
Commercial equipment motors (blower motors, condenser fan motors, refrigeration compressor motors) require specific replacement matching original specification. Commercial motor replacement typically expedited through manufacturer dealer inventory for common motor types.
Commercial refrigeration on restaurants (walk-in coolers, walk-in freezers, reach-in units) and grocery installations (display cases, prep cooler equipment, storage freezers) requires specialized service beyond standard HVAC scope. Refrigeration service coordinated through our commercial team for restaurant and light commercial refrigeration applications.
Commercial HVAC installation quotes, Manual N load calculation with altitude correction, ASHRAE 62.1 ventilation rate compliance verification, Salt Lake County Health Department restaurant coordination, building automation system BACnet integration, and commercial repair dispatch all route through the office at 14659 S 855 W. Whether you’re coordinating a 4-ton single-package Trane Precedent RTU installation on a Bluffdale strip mall retail storefront, specifying a full-service restaurant HVAC system with kitchen makeup air along Porter Rockwell Boulevard, or planning a VAV system with Tridium Niagara BAS integration on a Class A office tenant improvement, our commercial team handles the sizing, permit coordination, and installation.