Commercial HVAC Estimating Services
Precision Division 23 mechanical equipment schedules, air-side distribution, hydronic integration, and subcontractor bid-day pricing support for commercial HVAC contractors nationwide.
Commercial HVAC Preconstruction & Cost Modeling
Commercial HVAC estimates demand thorough coordination between equipment schedules, air distribution routing, controls specifications, and electrical connections. JLG Estimating provides structured preconstruction takeoffs that verify every mechanical tag and component against project specifications.
We work with commercial mechanical subcontractors to review equipment lead times, supplier quote inclusions, warranty requirements, and factory-installed accessories. Our deliverables give your bid team a verifiable, itemized foundation ready for GC submission.
Major Mechanical Equipment
Systematic takeoff of all scheduled mechanical equipment with exact tag matching and capacity verification:
- Packaged Rooftop Units (RTUs) with curb adapters
- Air Handling Units (AHUs), fan coil units (FCUs) & DOAS
- Variable Refrigerant Flow (VRF) condensers & indoor fan coils
- Commercial exhaust fans, inline blowers & gravity louvers
Air Distribution Devices
Complete count and categorization of terminal air distribution devices and safety accessories:
- Variable Air Volume (VAV) & constant volume terminal units
- Supply diffusers, return grilles, linear slots & transfer louvers
- UL-rated fire dampers, combination fire/smoke dampers
- Electric duct heaters & sound attenuator silencers
Hydronics & Refrigeration Lines
Coordination of mechanical piping connected to HVAC cooling and heating equipment:
- Chilled water & heating hot water terminal unit runouts
- ACR copper refrigerant lines with elastomeric insulation
- Condensate drain lines (hard copper & PVC) with P-traps
- Motorized control valves, balancing valves & test ports
Coordinating Mechanical Equipment Schedules & Specifications
Commercial HVAC estimates fail most frequently during the equipment buyout phase when major mechanical units are quantified without verifying factory-installed options, voltage configurations, or structural mounting constraints. We review every line item in the mechanical schedule against the Division 23 written specifications.
1. Curb Adapters, Vibration Isolation & Wind Loads
We verify roof curb dimensions, roof slope transitions, and factory spring isolation rails. In coastal and seismic jurisdictions, we check specification requirements for ASCE 7 hurricane tie-downs and seismic snubbers so heavy RTUs and cooling towers are fully budgeted.
2. Electrical Characteristics & Motor Hookups
We cross-reference mechanical unit Minimum Circuit Ampacity (MCA) and Maximum Overcurrent Protection (MOP) ratings against the electrical panel schedules. This prevents costly scope gaps between mechanical starter supply and electrical branch wiring connections.
3. Building Automation & DDC Control Demarcation
Controls scope can represent 10% to 20% of the entire mechanical contract value. We clarify whether temperature controls are factory-packaged, field-installed by the mechanical contractor, or furnished by a separate building automation vendor under an independent tender package.
Trade-Specific Scope Challenges We Address
Our commercial HVAC takeoff packages are tailored to protect mechanical subcontractors against bid-day surprises, change-order disputes, and specification omissions:
Fire, Smoke & Radiation Damper Coordination
We cross-reference architectural life-safety partition plans with mechanical duct layouts to capture every combination fire/smoke damper (FSD) and ceiling radiation damper (CRD). We itemize motorized actuator voltages (24V vs 120V) and thermal fusible link ratings.
Testing, Adjusting & Balancing (TAB) Inclusions
We verify whether third-party certified air and hydronic balancing (AABC/NEBB) is an owner-contracted service, a general contractor allowance, or an obligation assigned to the mechanical subcontractor under Section 23 05 93.
Variable Refrigerant Flow (VRF) Refnet & Condensate Takeoffs
VRF systems require specialized branch selector boxes, manufacturer-engineered refnet joint fittings, nitrogen purge brazing labor, and insulated condensate drain piping. We measure exact linear runs and fitting counts for clean manufacturer quote benchmarking.
Need Granular Sheet Metal Poundage Takeoffs?
If your shop fabricates or installs commercial sheet metal ductwork, we provide dedicated duct takeoff services with weight breakdowns by gauge, pressure class, and fitting configuration.
Explore Ductwork Takeoff Services →What's In a Dedicated Duct Takeoff?
- Rectangular, spiral, and oval duct poundage by gauge (18ga – 26ga)
- Internal acoustic lining & external insulation wrap square footage
- Elbows, offsets, transitions, square-to-rounds & turning vanes
- Shop fabrication labor hours vs. jobsite installation hours
Priority Regional HVAC Estimating Services
Specialized commercial HVAC and mechanical takeoffs engineered for regional thermal loads and state energy codes.
Texas HVAC Estimating
ERCOT peak heat design, chiller plants, data center cooling loops, and IECC 2021 energy compliance.
Texas HVAC Scope →Florida HVAC Estimating
DOAS active dehumidification, high latent cooling takeoffs, coastal corrosion specs, and HVHZ hurricane tie-downs.
Florida HVAC Scope →California HVAC Estimating
Title 24 Part 6 decarbonization, commercial heat pump transitions, FDD economizers, and seismic curbing.
California HVAC Scope →Georgia HVAC Estimating
Savannah and Atlanta warehouse ventilation, high-tonnage chiller plants, and packaged rooftop unit arrays.
Georgia HVAC Scope →North Carolina HVAC Estimating
Charlotte commercial office VAV, RTP pharmaceutical cleanroom air handlers, and NC Energy Code takeoffs.
North Carolina HVAC Scope →Nationwide Coverage
We estimate commercial HVAC for mechanical contractors nationwide.
View All Locations →Specialized Commercial HVAC by Project Sector
Mechanical equipment selection, thermal loads, and psychrometric requirements vary significantly by commercial facility type.
Data Center Cooling
Computer Room Air Handlers (CRAH), direct-to-chip liquid cooling manifolds, free cooling, and redundant central chiller plants.
Data Center Scope →Hospital & Healthcare HVAC
100% outside air custom AHUs, surgical suite laminar flow diffusers, HEPA filtration, and ASHRAE 170 air balance takeoffs.
Healthcare Scope →Tenant Improvements (TI)
VAV box relocations, flexible duct runouts, linear slot diffusers, and 48–72 hour quick turnaround for interior commercial fitouts.
Commercial TI Scope →Frequently Asked Questions
Common questions regarding our commercial hvac estimating services.