A 50 ton AC unit typically costs $40,000-$90,000 for equipment alone, while a complete commercial replacement commonly totals $70,000-$160,000. The 50 ton AC unit price depends on system type, efficiency, crane access, ductwork changes, electrical work, and local labor rates.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Equipment only | $40,000 | $65,000 | $90,000 | Typical packaged rooftop unit |
| Installed replacement | $70,000 | $110,000 | $160,000 | Standard removal and connection work |
| Installed cost per ton | $1,400 | $2,200 | $3,200 | Varies with scope and access |
Assumptions: U.S. commercial building, standard packaged equipment, existing usable ductwork and electrical service.
What a 50 Ton Rooftop AC Replacement Usually Costs
A standard 50 ton packaged rooftop unit, often called an RTU, serves larger commercial spaces such as warehouses, retail buildings, and light industrial facilities. Equipment pricing is generally $40,000-$90,000; a typical replacement with rigging, connections, startup, and disposal is about $70,000-$160,000.
A practical planning allowance is roughly $2,200 per ton installed, or $110,000 for a straightforward replacement. That estimate assumes a like-for-like unit and no major curb, duct, control, or electrical reconstruction. Higher-efficiency equipment or difficult roof access can push a quote above the typical range.
How Equipment, Labor, and Crane Charges Shape the Quote
Equipment is usually the largest line item, but labor and lifting costs can substantially change the final bill. The ranges below describe typical portions of a U.S. commercial replacement, not fixed add-ons; project scope determines which apply.
| Quote item | Low | Average | High | Typical scope |
|---|---|---|---|---|
| 50 ton unit | $40,000 | $65,000 | $90,000 | Packaged RTU, standard controls |
| Installation labor | $12,000 | $22,000 | $38,000 | Disconnect, set, connect, startup |
| Crane and rigging | $2,500 | $6,000 | $14,000 | Depends on reach and street access |
| Removal and disposal | $1,500 | $3,500 | $7,000 | Existing unit and refrigerant handling |
| Electrical, curb, controls | $3,000 | $10,000 | $25,000 | Repairs or system upgrades |
Commercial HVAC labor commonly runs $100-$180 per technician-hour, with crew size and after-hours work affecting total labor.
Ask for equipment, labor, rigging, disposal, and modifications as separate quote lines. This makes it easier to compare bids that may otherwise bundle very different work.
Which Tonnage, Efficiency, and Roof Conditions Change Price
A 50 ton rating describes cooling capacity, not the unit’s complete configuration. A replacement with matching airflow, voltage, heating section, and controls is usually less costly than changing system design or building capacity.
Efficiency also matters. A standard-efficiency unit may sit near the lower equipment range, while higher-efficiency models, advanced compressors, economizers, and enhanced controls can add $8,000-$25,000 or more. Confirm the quoted efficiency and included options rather than comparing model names alone.
Roof and connection changes can add more than equipment upgrades. A curb adapter may cost $2,000-$8,000; structural reinforcement or extensive duct transitions can add $5,000-$20,000. A unit over 50 tons, a long crane reach beyond roughly 100 feet, or a roof with restricted staging can require specialized equipment and extra labor.
How Long Installation Takes and What Crew Rates Include
A planned like-for-like swap often takes one to three workdays on site, while equipment ordering and permitting may extend the calendar schedule by several weeks. A typical crew includes three to five HVAC technicians, plus crane operators and electricians when required.
Labor estimates should clarify whether they cover startup, refrigerant checks, controls testing, and commissioning. After-hours installation can add 15%-30% to labor, especially when the building cannot shut down during normal operations.
Compare total labor hours and included startup work, not just the hourly rate. A lower rate may not produce a lower bill if the bid assumes more hours or excludes commissioning.
Why 50 Ton AC Installation Prices Vary by U.S. Region
Labor markets, local code requirements, freight, and contractor availability affect pricing. A project in a major coastal city may run 10%-25% above a similar job in a lower-cost inland market; remote locations can also cost more because of equipment delivery and limited crane availability.
Extreme heat can tighten contractor schedules in southern markets, while winter work may be easier to schedule in some regions if the building can tolerate downtime. These are market tendencies, not guarantees, so local written bids provide the clearest comparison.
Use regional percentages as a budgeting adjustment, not as a substitute for a site-specific quote. Verify whether sales tax, permits, freight, and crane permits are included.
When Curb Adapters, Electrical Work, or Duct Repairs Add Cost
Extra work is common when the new unit does not match the existing footprint or when inspection finds aging connections. Electrical upgrades can cost $3,000-$15,000, control integration may add $2,000-$10,000, and duct repairs can range from $1,500 for localized sealing to $20,000 or more for extensive replacement.
Crane charges can rise when the unit must be lifted over obstacles, street closure permits are needed, or the job requires a second mobilization. Confirm the assumed lift distance, placement plan, disposal fee, and any allowance for roof repairs before approving the quote.
Clarify exclusions in writing because “standard installation” does not always include building-side repairs.
Three 50 Ton Replacement Quotes With Different Scopes
A basic swap at a suburban warehouse could include a $52,000 unit, 80 labor hours at $125 per hour, $4,000 rigging, and $3,000 removal, for about $69,000 before tax. It assumes a compatible curb and no electrical changes.
A typical retail replacement might include a $65,000 unit, 120 labor hours at $145 per hour, $7,000 crane work, $5,000 electrical and control work, and $4,000 disposal, totaling about $98,000. A premium high-efficiency installation with difficult roof access could reach $150,000-$180,000 after equipment, extended rigging, curb work, and commissioning.
These examples are budgeting scenarios, not national fixed prices. Each assumes one 50 ton unit; multiple units may change mobilization and labor costs.
Where Building Owners Can Trim the Replacement Budget
Keeping the existing curb, electrical service, controls, and duct connections can avoid thousands of dollars in retrofit work. If the current system can safely operate until a planned replacement, scheduling outside peak demand may improve contractor availability, although equipment lead times still matter.
Compare at least three itemized bids with the same capacity, efficiency, accessories, warranty, and scope. Avoid paying for upgrades that do not meet a documented building need, but do not reduce capacity without a qualified load calculation.
The most reliable savings come from matching scope and preventing surprise modifications, not choosing equipment on price alone.