A Lennox SL28XCV 5-ton air conditioner typically costs about $8,000-$13,000 for the outdoor unit alone, while a professionally installed cooling system commonly totals $16,000-$25,000. The Lennox SL28XCV 5 ton price depends on whether the quote includes a compatible indoor coil, controls, electrical work, duct changes, and removal of existing equipment.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Outdoor SL28XCV unit | $8,000 | $10,500 | $13,000 | Equipment only; dealer pricing varies |
| Installed AC replacement | $14,000 | $19,000 | $25,000 | Outdoor unit, coil, labor, standard hookup |
| Matched full HVAC system | $18,000 | $24,000 | $32,000 | May include furnace or air handler and controls |
| Typical cooling capacity | 5 tons | 60,000 BTU/hr | 5 tons | Correct sizing requires a load calculation |
Assumptions: U.S. pricing in USD, standard access, compatible ductwork, and a routine replacement. The SL28XCV is a premium variable-capacity system; confirm current model availability and matched-system requirements with a Lennox dealer.
What a 5-ton SL28XCV replacement usually costs
For a straightforward replacement of the outdoor condenser and indoor evaporator coil, a reasonable planning range is $14,000-$25,000 installed. A midrange quote near $19,000 generally assumes standard removal, refrigerant piping in usable condition, electrical connections that meet code, and no major duct or control upgrades. A full system replacement that also includes a furnace or air handler can reach $32,000 or more.
Budget roughly $19,000 for a standard installed AC replacement, not just the outdoor cabinet. The equipment price is only one part of the job: a variable-capacity system needs compatible components and setup, and installation quality affects how it operates. A seller offering an unusually low equipment-only figure may not be including the coil, thermostat, labor, startup, or warranty registration.
Five tons equals 60,000 BTU per hour of nominal cooling capacity, but that does not mean every 5-ton unit suits every house. A contractor should size the system using a room-by-room load calculation and assess insulation, windows, air leakage, and duct condition. Replacing an existing 5-ton system with the same size without checking the load can preserve an oversizing problem.
How condenser, coil, controls, and labor shape the quote
Ask for an itemized estimate that identifies the exact outdoor and indoor model numbers. Lennox system performance depends on the matched combination, and a premium condenser paired with incompatible or unsuitable indoor equipment may not deliver the expected efficiency or operation. The installed quote should also state whether removal, startup, permits, and warranty registration are included.
| Quote component | Typical range | What changes the charge | Common basis |
|---|---|---|---|
| SL28XCV outdoor unit | $8,000-$13,000 | Dealer price, availability, model configuration | 5-ton equipment |
| Indoor coil and refrigerant work | $1,500-$3,500 | Matched coil, line-set condition, refrigerant handling | Coil and hookup |
| Installation labor | $2,000-$5,000 | Crew size, access, setup, commissioning | Usually 12-24 crew hours |
| Controls and electrical | $500-$2,500 | Thermostat compatibility, wiring, disconnect changes | Parts and installation |
| Removal, disposal, and permit | $300-$1,200 | Local fees, refrigerant recovery, haul-away | Per project |
| Duct or plenum changes | $0-$4,000+ | Leakage, sizing, access, code requirements | Scope-dependent |
Labor estimate example: 12-24 crew hours at an effective $100-$200 per hour equals approximately $1,200-$4,800 before separate project overhead, equipment handling, and specialty commissioning.
The indoor coil, controls, and commissioning can add thousands beyond the condenser price. Labor rates and line items differ by contractor, so compare total installed scope rather than a single equipment number.
Why 28-SEER performance and system matching change the price
The SL28XCV is a high-efficiency, variable-capacity model, and its price reflects more advanced operation than a basic single-stage condenser. It can adjust output rather than simply running at one fixed level, but realized performance depends on the matched indoor unit, controls, installation, and operating conditions. A quote should identify the efficiency rating for the proposed combination, not treat the outdoor unit’s advertised figure as the rating of every system.
Five-ton capacity is a major threshold for both equipment and installation. A 5-ton system moves more air than a smaller unit, and its ductwork, coil, electrical service, and refrigerant piping must be suitable. If existing ducts are undersized or have significant leakage, correcting them may add $500-$4,000 or more. A 3- to 4-ton system, if a load calculation supports it, may cost less, but downsizing should not be based on price alone.
Ask whether the quote includes a compatible communicating thermostat and any interface or control components needed for the selected configuration. Reusing a conventional thermostat or old indoor equipment can limit system functions or require additional parts. Confirm the manufacturer’s current matched-system documentation and warranty terms before paying a deposit.
Capacity, matched components, and duct condition are more useful price checks than the model name alone. An estimate that omits the indoor model numbers or system efficiency rating is difficult to compare with another proposal.
What labor hours and commissioning add to installation
A standard changeout may take one workday, while a complex installation can span two days or more. A crew often spends about 12-24 hours on removal, setting equipment, connecting lines and wiring, evacuating and charging the refrigerant circuit, and testing operation. Difficult access, a long line set, electrical corrections, or duct modifications can extend the schedule.
Variable-capacity equipment makes commissioning particularly important. Contractors should verify airflow, refrigerant charge, controls, and system communication according to manufacturer procedures. A quote that allocates too little time for startup may appear cheaper but leave unclear who is responsible for correcting poor performance. Request the planned commissioning checks in writing and ask whether a follow-up visit is included.
Labor price varies by local wages and business costs. In high-cost metropolitan markets, installation labor and overhead can exceed comparable rural pricing; rural estimates may instead include a longer travel charge or limited contractor availability. Compare the listed work hours and commissioning scope, not only the quoted labor total.
How Southeast and Northeast quotes can differ
Regional pricing can vary by roughly 10%-25% from a comparable national-style estimate, although actual bids depend on dealer pricing and local demand. Large metropolitan areas in the Northeast and West Coast often land 10%-25% above a middle-market quote because of higher wages, permits, and operating costs. Some Southern markets can be near the national middle, while remote areas may carry added delivery or travel charges.
Climate and local installation practices also affect the proposal. In a humid cooling climate, contractors may pay particular attention to airflow and moisture removal; in colder areas, the house may need a compatible heating system and controls as part of a broader replacement. Local electrical, refrigerant, and mechanical requirements can change the scope. These differences do not create one fixed regional price, so request bids from licensed local installers using identical model numbers and inclusions.
When comparing a quote that is 15% higher than another, check whether the difference reflects a larger scope, a better matched indoor coil, duct repairs, permits, or a longer labor warranty. If both proposals list the same system and tasks, ask each contractor to explain the gap. Regional averages are a starting point; the line-item scope determines whether a local quote is comparable.
Three realistic 5-ton installation quotes to compare
The following examples illustrate how scope affects price; they are estimates, not fixed Lennox dealer offers. Each assumes a compatible SL28XCV system and ordinary residential access. Local labor, equipment availability, and the exact matched components can move the final amount.
| Example | Scope and labor | Estimated total | Price context |
|---|---|---|---|
| Basic replacement | Condenser and coil, 12 crew hours, no duct work | $15,000-$18,000 | About $250-$300 per nominal ton installed |
| Typical matched AC system | Condenser, coil, controls, removal, 16-20 crew hours | $18,000-$23,000 | Includes ordinary startup and disposal |
| Expanded replacement | Matched cooling system, wiring and plenum corrections, 20-30 crew hours | $24,000-$32,000 | Higher scope; may include indoor equipment changes |
A per-ton figure is only a quick comparison measure, not a reliable pricing method by itself. The same 5-ton capacity can have different installed prices depending on whether the job replaces cooling equipment only or includes a furnace, air handler, thermostat, and ductwork. Check whether sales tax, financing charges, and permit fees appear separately.
A fair comparison uses the same system models, labor scope, and warranty terms across all bids. Ask for the outdoor unit, indoor coil, controls, installation tasks, and exclusions to be listed explicitly.
When removal, electrical work, or permits raise the bill
Old equipment removal and refrigerant recovery may be included in a normal replacement, but the estimate should say so. Disposal and recovery charges commonly add about $100-$500 when itemized. A new electrical disconnect, wiring, or breaker work can add $300-$1,500; the cost rises if the panel needs repair or capacity changes. Permit and inspection fees often range from $100-$600, depending on local rules and project scope.
Line-set replacement can cost roughly $500-$2,000 or more when the existing copper piping is damaged, incorrectly sized, too long, or inaccessible. Duct sealing or repairs may range from a few hundred dollars for limited work to several thousand for substantial changes. These are not automatic add-ons; the contractor should explain the observed condition and provide a separate price.
Code upgrades, condensate management, a new pad, crane access, or unusually difficult placement may also affect a quote. Before authorizing extra work, request the reason, the specific item being installed, and whether it is required by code, manufacturer instructions, or site conditions. Separating necessary corrections from optional upgrades helps keep change orders transparent.
Ways to lower the SL28XCV price without cutting commissioning
Keep the project scope clear before requesting bids. State whether the job is AC-only or a full HVAC replacement, and ask every contractor to price the same indoor equipment, thermostat, removal, permits, and duct work. This makes a lower quote easier to evaluate and reduces disputes over exclusions after installation begins.
Use a load calculation to confirm that 5 tons is appropriate. If the house needs less capacity, a properly sized lower-capacity system may reduce equipment and operating costs, but the decision should follow measured conditions rather than a salesperson’s quick estimate. Conversely, an undersized system can run excessively and fail to maintain comfort.
Existing line sets, electrical components, pads, and ducts may be reusable if they meet manufacturer requirements and local codes. Request inspection-based pricing for reuse rather than accepting blanket replacement or assuming old parts are suitable. Avoid paying for accessories or control upgrades that do not support the selected system’s required operation.
Scheduling during a less busy period may improve appointment availability and can sometimes produce more competitive bids, but discounts are not guaranteed. Obtain two or three written quotes from qualified installers, check warranty coverage and labor exclusions, and compare the commissioning process. Control scope and verify compatibility before trying to reduce the labor or startup budget.
Questions that clarify a Lennox dealer’s final price
Ask whether the stated price is for the outdoor condenser alone, an AC-and-coil changeout, or a complete heating and cooling system. Confirm the exact model numbers, rated system efficiency, thermostat, line-set plan, and any required indoor equipment. Clarify whether the quote includes sales tax, permits, disposal, electrical work, and duct repairs.
Ask how long the installation should take, who performs startup, and what testing is documented. Confirm equipment warranty registration requirements, labor warranty duration, and charges for service calls that are not covered. A long parts warranty does not automatically pay for labor, refrigerant, or diagnostic visits.
If a quote is much lower than others, ask what is excluded rather than assuming it is a bargain. If it is much higher, request itemized pricing and an explanation of any duct, electrical, or control work. A written scope with matching model numbers is the most reliable way to judge the 5-ton price.