A 30-ton air conditioner typically costs $25,000-$60,000 for the equipment alone, while a standard commercial replacement often totals $45,000-$100,000 installed. The final price depends on whether the unit is rooftop or split-system, its efficiency and controls, crane access, ductwork, and local labor rates.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| 30-ton equipment | $25,000 | $40,000 | $60,000 | Packaged commercial unit before installation |
| Installed replacement | $45,000 | $72,000 | $100,000 | Typical swap with standard access and limited modifications |
| Complex new installation | $75,000 | $110,000 | $160,000 | May require duct, electrical, curb, or controls work |
| Equipment rate | $830 | $1,330 | $2,000 | Per ton, equipment only |
What a 30-ton rooftop unit costs installed
A 30-ton system delivers about 360,000 BTU per hour of nominal cooling capacity. A like-for-like packaged rooftop replacement commonly falls between $45,000 and $100,000, including equipment, removal, rigging, installation, and startup. A new system with extensive distribution or control work can exceed that range.
Lower quotes generally assume a standard-efficiency unit, an existing curb that fits, clear crane access, and no major electrical upgrades. Higher-end prices may reflect stronger efficiency, advanced controls, difficult lifting, or a high-cost metro market. Assumptions: U.S. commercial project, standard packaged unit, normal access, and no major duct replacement.
For a straightforward replacement, budgeting about $60,000-$85,000 is a reasonable starting point. Exact capacity should be confirmed by a load calculation rather than inferred from building area alone.
How equipment, labor, and crane charges shape the quote
Quotes can bundle several trades, so a line-item estimate makes it easier to compare bids. Typical ranges below reflect a replacement project; difficult access or extensive upgrades can push costs higher.
| Quote component | Typical range | What it covers | Cost basis |
|---|---|---|---|
| 30-ton unit | $25,000-$60,000 | Packaged cooling equipment and standard controls | $830-$2,000 per ton |
| Labor and startup | $8,000-$20,000 | Disconnect, set, reconnect, test, and commission | $100-$175 per crew-hour |
| Crane and rigging | $2,000-$8,000 | Lift, operator, rigging, and site coordination | Per project |
| Removal and disposal | $1,000-$4,000 | Old unit removal and refrigerant handling | Per unit |
| Electrical, curb, or controls | $2,000-$18,000 | Repairs or modifications beyond a basic swap | Scope-dependent |
Ask whether the quoted total includes crane time, disposal, permits, startup, and controls integration.
Efficiency ratings, curb fit, and duct changes move prices
Efficiency and configuration can change the equipment quote by thousands of dollars. A basic commercial unit may cost less upfront, while higher-efficiency compressors, staged cooling, economizers, and advanced building controls add cost. Compare rated efficiency and included options, not just tonnage.
Physical fit is another major driver. If the existing roof curb does not match the replacement unit, an adapter or curb alteration may add roughly $1,000-$5,000; roof repair or structural work can cost more. Electrical service upgrades may add $2,000-$10,000 or more when panel capacity or wiring is insufficient.
Confirm curb dimensions, voltage, connection points, and control compatibility before selecting a unit. A 30-ton rating does not guarantee that a particular model is a direct replacement.
How long a 30-ton replacement takes on site
A simple rooftop swap often takes a crew of three to five technicians about one to two workdays, excluding equipment lead time and permit delays. A new installation with duct, electrical, or controls work can take several days to multiple weeks, depending on coordination with other trades.
Labor charges vary by market, access, and contract structure. When billed by time, commercial HVAC labor commonly runs about $100-$175 per technician-hour; some contractors instead quote a fixed installation amount. Rooftop height, parking restrictions, weather, and after-hours work can increase crew time or crane fees.
Request the expected crew size and on-site hours as well as the fixed price. Assumptions: daytime work, prepared roof access, and no concealed damage.
Regional labor and crane access change installed prices
Commercial installation prices can vary substantially across the United States. Major coastal metros and dense urban areas may run about 10%-25% above a national baseline because of higher labor, insurance, permitting, and crane costs. Smaller markets may come in 5%-15% below baseline, though limited contractor availability can offset savings.
Urban roofs may require street closures, lift permits, or a longer crane setup, while suburban sites often have simpler access. Rural projects can face travel charges or fewer qualified crews. These differences affect installed totals more than the equipment’s published price.
Compare bids from contractors pricing the same equipment specification and access conditions. A lower regional quote is not comparable if it excludes lifting, disposal, or required electrical work.
Permits, controls, and roof repairs add project costs
Local permits and inspections may add about $300-$2,500, depending on jurisdiction and whether electrical or mechanical permits are separate. Controls integration for a building management system can add roughly $1,500-$8,000, especially when existing controls are outdated or proprietary.
Roof curb repairs, flashing, and patching may add $500-$5,000 for limited work; extensive membrane replacement is a separate roofing scope. If refrigerant piping, duct transitions, or condensate drains need correction, ask for those items to be priced individually.
Have the contractor identify code-required work separately from optional upgrades. Confirm which party handles permits, roof warranty coordination, and inspection scheduling.
Repairing a 30-ton unit versus replacing it
Major repairs can cost $2,000-$12,000, while compressor replacement may reach $8,000-$20,000 depending on parts and refrigerant work. Repair can be economical when the unit is relatively young, the heat exchanger and cabinet are sound, and the problem is isolated. Repeated failures or obsolete controls may make replacement more practical.
Compare the repair estimate with the installed replacement quote and consider expected downtime, remaining equipment life, and energy use. A diagnostic visit may cost $150-$500, sometimes credited toward approved work. Warranty coverage can materially reduce a repair bill, so check parts and labor terms before authorizing service.
Get a written diagnosis before treating a single repair estimate as proof that the whole unit needs replacement.
Lower the 30-ton AC bill with controlled scope
Keep the existing curb, electrical connections, and controls when they are safe, compatible, and code-compliant. Choose efficiency based on operating hours and utility costs rather than assuming the highest rating will pay back. Avoid replacing usable ductwork or adding controls that the building does not need.
Obtain at least three itemized quotes using the same capacity, efficiency level, accessories, and warranty terms. Schedule non-emergency work early enough to avoid rush premiums, and coordinate crane access with other roof work when practical. Do not reduce capacity or skip commissioning to cut the bid.
The strongest savings usually come from avoiding unnecessary scope while preserving correct sizing and startup testing. Ask each bidder to list exclusions so a low initial price does not become a costly change order.