HVAC & Mechanical Contractor Procurement Execution Case Study

The Customer

A national commercial HVACR contractor operating across all major U.S. markets, with $100M–$400M in annual revenue and a field workforce supporting:

Preventive maintenance
Reactive and emergency service
Capital replacements and unit change-outs
Large-scale project rollouts
Site surveys and assessments

Their daily operations rely heavily on cranes, aerial equipment, jobsite deliveries, precise sequencing, and regional supplier coordination - often across hundreds of locations per week.

Their Challenges

Even with national agreements and disciplined procurement, HVAC teams still lose control when technicians, project managers, crane operators, equipment suppliers, and finance coordinate outside a single execution workflow.

1. Fragmented field-level purchasing

Despite contracted rates with crane operators and national equipment suppliers, actual ordering behavior varied by region, technician, project manager, timing, and urgency level.

This inconsistency produced:

Wide variance in hauling and mobilization costs
Missed opportunities to use approved partners
Non-compliant spend
Equipment sourced too far from the jobsite
Inconsistent supplier decisions across similar jobs

2. Crane and equipment delivery mismatch

This was one of their biggest operational headaches.

Because cranes and aerial equipment came from different suppliers, they struggled to ensure:

The lift arrived at the crane operator’s yard on time
The operator received it
The equipment stayed dedicated to the HVAC install
It wasn’t used on another contractor’s job
The asset was not reassigned, misplaced, or left idle
The rental lifecycle stayed aligned with the install schedule

Field teams had no centralized place to confirm:

What equipment was ordered
When it was delivered
Whether the crane contractor acknowledged it
Whether the asset was on site when the crew arrived
Whether pickup or call-off had been triggered

This created unnecessary delays, idle time, reorders, extra rental days, and cost overruns.

3. Materials and documentation disconnected from jobsites

Their project documentation - BOMs, equipment lists, install diagrams, submittals - lived in email, shared folders, PDFs, and project management systems with no operational tie-in.

None of it was connected to the actual rental assets, crane workflows, supplier activity, or jobsite execution record.

This created:

Inventory confusion
Incomplete handoffs
Limited visibility into what materials were on site versus in transit
Repeat calls and re-deliveries
Unnecessary rental days

4. No unified visibility across regions

Leadership lacked a consolidated view of:

Spend by customer, region, or program
On-rent versus idle equipment
Crane mobilization patterns
Rate card compliance
Vendor performance
Savings opportunities

Procurement had data.
Finance had data.
Operations had data.

None of it was connected to one controlled execution workflow.

The SiteStack Solution

SiteStack delivered a jobsite procurement execution system that connected suppliers, crane operators, project documentation, rental lifecycle, and multi-site execution in one controlled workflow.

✓ Standardized Vendor Selection

SiteStack scored and recommended suppliers by:

Total cost
Distance to jobsite
Hauling and mobilization impact
Availability
Rate structure
Historical performance

This removed field-level guesswork and reduced non-compliant purchases.

✓ Crane and equipment orchestration in one control plane

For the first time, the contractor could see:

What equipment was ordered
When it was delivered
Whether the crane operator received it
When the lift was scheduled for install
Whether the asset was still tied to the right job
Whether pickup or call-off had been triggered

SiteStack allowed the team to stage and sequence crane and equipment workflows together, reducing misfires, reorders, idle time, and unnecessary extra days on rent.

✓ Materials and documentation embedded into the jobsite workflow

SiteStack enabled the contractor to upload:

BOMs
Work orders
Scope sheets
Install diagrams
Material lists
Delivery receipts

Once attached, materials and documentation became part of the job’s operational workflow, connected to equipment, crane sequencing, supplier activity, and cost tracking.

This unified materials + equipment + crane sequencing in a way no other system does.

✓ Gap coverage through the BigRentz network

When preferred suppliers lacked availability or local coverage, SiteStack surfaced alternate supply points across 14,000+ locations nationwide, helping teams maintain consistency on remote or rural jobsites without building new vendor relationships from scratch..

✓ Program-level control across hundreds of sites

Leadership gained a consolidated view of:

Spend by customer or program
Region-level performance
Idle equipment exposure
Crane usage patterns
True cost of service delivery
Forecast versus budget
Open workflows and supplier exceptions

This turned reactive coordination into proactive control.

The Impact

Across $5M in annual logistics and rental spend, SiteStack delivered:

➡ 15–20% cost reduction

Driven by:

Better hauling decisions

Improved crane and operator coordination

Reduced idle time

Fewer duplicate rentals

Tighter rate-card adherence

Fewer re-orders and missing equipment events

Fewer unnecessary extra days on rent

➡ Consistent execution across all regions

Every install crew followed the same workflow regardless of location, manager, or urgency.

➡ One system for cranes, equipment, materials, and documentation

Project teams, procurement, operations, and finance worked from the same jobsite execution record.

HVAC & Mechanical Contractor Procurement Execution

How a national HVACR provider reduced logistics and rental cost by controlling supplier selection, crane coordination, delivery workflows, and jobsite execution.