Air conditioner replacement cost dataset

The federal minimum, by region

From 10 CFR 430.32(c)(5) and (c)(6), for split-system air conditioners with a certified cooling capacity below 45,000 BTU/h.

The rule does not merely recommend the higher rating in the states it names. It provides that an outdoor unit whose certified combination rates below the applicable standard cannot be installed in that region. Read from the regulation on govinfo, retrieved 2026-08-23. The Southwest also carries an EER2 floor, which is efficiency measured at 95 °F rather than averaged over a season — the number that means something in a desert.

Two metro areas, and the two things that differ

The same 3.5-ton minimum-efficiency replacement is $5,851 in Atlanta and $5,652 in Cleveland. Two separate forces are at work and it is worth pulling them apart: the two metros pay different wages for the same trade, and Georgia is named in the efficiency rule while Ohio is not, so the legal floor is 14.3 in one and 13.4 in the other. The calculator isolates the second by holding your own labour market fixed and changing only the legal requirement. Mixing the two would produce a difference that looks like a finding and is really an accident.

The three equipment tiers

National wages, 2,000 square feet, mixed climate, outdoor unit and matched coil. Only the box outside changes.

What “replacing the AC” means

⚠️ The cheapest row is the one least likely to be offered, and that is not a sales tactic. A condenser and an indoor coil have to be a certified matched pair — the efficiency rating on the outdoor unit is only true with the coil it was tested against — and since January 1, 2025 the refrigerant transition under 40 CFR 84.54 means the two halves may not even be designed for the same fluid. The rule bars manufacture and import of self-contained residential air conditioning and heat pump products using refrigerants with a global warming potential of 700 or greater. Retrieved 2026-08-23.

Size, by house and by climate

⚠️ Square feet per ton is our declared estimate. There is no official federal table for it, and the bands are wide because the building envelope matters as much as the weather. The model picks the nearest commercial size rather than always rounding up, which is deliberate: oversizing an air conditioner is a defect and not a safety margin. Too much capacity satisfies the thermostat quickly, shuts off, and never runs the long steady cycle that removes humidity — so the house ends up cold and damp. The professional standard is ACCA Manual J, it is licensed material, and this site does not reproduce it.

The two hours before anything is cut

Every row in every table above includes two hours of refrigerant recovery. EPA, Stationary Refrigeration and Air Conditioning (Section 608) establishes the national recycling and emission reduction programme, and EPA states that it prohibits individuals from intentionally venting these refrigerants and their substitutes while maintaining, servicing, repairing or disposing of air conditioning equipment. It is not an optional line and it is not a courtesy. It is also, in practice, the most reliable single signal about the quality of the outfit you have hired. Retrieved 2026-08-23.

Line items

75% of the reference total comes from estimated rather than official figures, and every one of those estimates carries its own uncertainty band rather than a single number applied across the board.

The reasoning behind each figure

Written out so an HVAC contractor can point at the exact assumption that is wrong.

Outdoor condensing unit, 13.4 SEER2 (North minimum)estimated, ±29%

• The cheapest split-system condenser it is legal to install outside the Southeast and Southwest. A three-ton unit lands around $1,560 to $2,850 for the box alone.
• The band moved upward across 2025 as the industry changed refrigerant. Equipment built for the new low-GWP fluids costs more than the R-410A it replaced, and that is a dated regulatory change rather than a market fluctuation.
• Manufactured goods shipped nationally: the band is specification and brand tier, not geography. Labour is the part this model adjusts by area.

Outdoor condensing unit, 14.3 SEER2 (Southeast and Southwest minimum)estimated, ±28%

• Same job, same installer, higher floor: 10 CFR 430.32(c)(6) requires 14.3 SEER2 rather than 13.4 for split systems installed in the states it names, and an outdoor unit that cannot certify to it may not be installed there at all.
• About 12% more per ton than the 13.4 unit. That figure is our estimate of what nine tenths of a SEER2 point costs at the bottom of the range, where efficiency is bought with a bigger coil and a better compressor rather than with electronics.
• This is not an upsell and it is not optional. It is the cheapest thing that is legal, and it is the reason an identical house costs more to cool in Georgia than in Ohio before anyone has quoted a single hour.

Outdoor condensing unit, two-stageestimated, ±24%

• Around 16 SEER2 with two capacity steps. Roughly a third more per ton than the legal minimum.
• The gain that is easiest to feel is not on the bill: a two-stage unit runs longer at lower output, and long run times are what remove humidity. In the Southeast that is most of the comfort.

Outdoor condensing unit, variable-speedestimated, ±25%

• 18 SEER2 and above, with an inverter-driven compressor that modulates rather than cycling.
• The band is wide because this tier is where brands differentiate hardest. It is also the tier where an out-of-warranty control board can cost more than a whole minimum-efficiency condenser, which belongs in the decision.

Matched indoor evaporator coilestimated, ±35%

• Cased coil sized and certified to the outdoor unit. The pair is what carries the efficiency rating: the number on the box outside is only true with the coil it was tested against.
• This is the line that makes "just swap the outside unit" cost far less on paper and far more in practice, and the reason it is rarely offered.

Air handler with variable-speed blowerestimated, ±42%

• For houses with no furnace: the cabinet that holds the coil and the blower, usually with resistance elements for heat.
• The band is mostly the blower motor. A constant-torque or variable-speed blower holds airflow when the filter loads up; the cheap one just moves less air and nobody notices until the coil freezes.

Refrigerant line setestimated, ±39%

• Insulated copper pair. The band is diameter and insulation thickness; the route is priced as labour on the next line.
• Replacing rather than reusing is the right call after a compressor burnout, when the diameter is wrong for the new equipment, or when the insulation has spent fifteen years in the sun.

Running and brazing the line set

• Three hours on a straightforward route: pull the old pair, run the new one, braze the joints under flowing nitrogen so the inside of the pipe does not scale, and insulate.
• A route through finished walls is a different job and is listed as an exclusion, because the cost there is drywall and paint rather than pipe.

Flushing and pressure-testing the existing line setestimated, ±48%

• Solvent and nitrogen. Small money, and the step that decides whether reusing the pipe was clever or catastrophic.
• Oil and acid left in an old line will destroy a new compressor, and no manufacturer covers that. If a quote reuses the line set and does not mention flushing it, that is the question to ask.

Filter drier and service valvesestimated, ±47%

• A new drier on every changeout. It absorbs the moisture that gets in while the system is open, and moisture plus refrigerant makes acid.
• Cheap, quick, and skipped often enough that it is worth naming.

Evacuation and refrigerant chargeestimated, ±46%

• The system is pulled into deep vacuum to boil off moisture and then weighed in with charge. Priced per ton because the charge scales with capacity and line length.
• The band widened with the refrigerant transition: the new low-GWP fluids cost more per pound than the R-410A they replaced, and some are mildly flammable, which changes how they are stored and handled.

Composite pad for the outdoor unitestimated, ±46%

• The old pad is usually settled and out of level after fifteen years. A condenser that sits out of level does not drain and does not sit quietly.

Disconnect, whip and breakerestimated, ±44%

• The pull-out disconnect within sight of the unit, the flexible whip into it, and the breaker if the new unit needs a different size.
• The old disconnect is fifteen years old and outdoors. It is the cheapest part of the job and the one most likely to be the reason the new system will not start.

Electrical connection

• An hour and a half to swap the disconnect, remake the whip and confirm the breaker matches the plate on the new unit.

Refrigerant recovery from the old system

• Two hours with recovery equipment before anything is cut. This is not optional and it is not a courtesy: EPA rules under Section 608 prohibit knowingly venting these refrigerants to the atmosphere while servicing or disposing of equipment.
• It is also the clearest sign of who you have hired. A crew that cuts the line and lets it go is telling you what the rest of the job will be like.

Removal, setting and connection

• Eighteen trade hours on a full changeout: two technicians for a long day. Ten when only the outdoor unit is being replaced, because nothing indoors is opened.
• The wage is official and regional; the hours are our estimate. There is no public productivity data for residential trades, so we say which half is which.

Old equipment removal and disposalestimated, ±49%

• Haulage and tipping. A condenser is mostly copper and aluminium, so scrap value offsets part of it, which is why the bottom of the band is low.

Start-up, charge verification and airflow check

• Two hours to verify the charge by superheat or subcooling, measure the temperature split across the coil and confirm airflow.
• An air conditioner is not a thing you plug in: it arrives with an approximate charge and reaches its rated efficiency only if somebody measures. This is where the SEER2 you paid for is either delivered or quietly lost.

Mechanical permit and inspectionestimated, ±60%

• Set by each jurisdiction with no national schedule, so a band rather than a figure. It is listed because leaving it out would make every quote that includes it look expensive.

Not included in this dataset

Ductwork repair, resizing or replacement

This prices the equipment and its connections. Undersized or leaking ducts are what make a correctly sized system underperform, and fixing them is a separate job that is sometimes larger than the equipment.

Running a line set through finished walls

The cost there is opening and repairing the wall, not the pipe. It depends entirely on the route and cannot be estimated without seeing it.

Electrical panel work

Assumes the panel has a suitable breaker position. If it does not, that is a separate job.

A Manual J load calculation

The tonnage here is a screening estimate from square feet and climate, not a room-by-room load calculation. A real one costs money and frequently comes back smaller than the rule of thumb.

Heating

The coil sits on top of your furnace and this figure leaves the furnace alone. Replacing both at once is common and is priced on our furnace page.

Repairs to an existing system

A capacitor, a contactor or a leak repair is service work, not a replacement, and is a fraction of anything on this page.