What is the AC unit cost in 2026? No federal agency measures installed prices, but the newest federal estimate we located, from EIA, puts a 3-ton central air conditioner at the northern federal minimum at $5,310 installed, in 2022 dollars. It is a modelled planning average, not a quote.
Key Takeaways
- EIA models a 3-ton split central AC at $5,310 installed at the northern minimum and $5,520 at the southern minimum, in 2022 dollars (EIA, March 2023).
- DOE’s 2017 rule averaged $4,092 installed for a 14 SEER split AC in northern states, in 2015 dollars (82 FR 1786, Table V-2).
- In DOE’s model a 14 SEER coil-only system cost $2,754 installed at 2 tons and $6,175 at 5 tons, in 2015 dollars (DOE technical support document, Table 8.2.31).
- LBNL found a $5,930 median across 71 central AC installs, in 2019 dollars (LBNL, August 2021).
- HVAC equipment producer prices in August 2026 were 19.0% above their 2022 average (BLS series PCU333415333415).
- The 33,000 to 38,900 Btu/h band (3-ton) was 22.0% of residential AC and heat pump shipments through July 2026 (AHRI, July 2026 release).
What is the AC unit cost in federal and national lab estimates?
Three public research sources price a new installed central air conditioner, each in a different dollar year. EIA gives $5,310 for a 3-ton northern minimum unit in 2022 dollars, DOE averaged $4,092 in 2015 dollars, and LBNL recorded a $5,930 median in 2019 dollars.
None is a measured market price. EIA’s figures, prepared by Guidehouse and Leidos, trace to DOE’s 2016 rulemaking analysis and LBNL’s 2021 study. All three describe the split system covered in how central air moves heat through ducts: an outdoor condensing unit paired with an indoor coil.
| Metric | Value | Source |
|---|---|---|
| Installed, 3-ton split AC, 13.4 SEER2, north | $5,310 (2022$) | EIA 2023, p.27 |
| Equipment portion | $2,680 (2022$) | EIA 2023, p.27 |
| Installed, 3-ton split AC, 14.3 SEER2, south | $5,520 (2022$) | EIA 2023, p.28 |
| DOE average installed, 14 SEER, North | $4,092 (2015$) | 82 FR 1832, Table V-2 |
| DOE average installed, Hot-Dry region | $4,584 (2015$) | 82 FR 1832, Table V-2 |
| DOE average installed, Hot-Humid region | $4,183 (2015$) | 82 FR 1832, Table V-2 |
| LBNL median installed, 71 central ACs | $5,930 (2019$) | LBNL 2021, 10.1.3 |
| LBNL median per ton and per square foot | $2,000 and $2.93 (2019$) | LBNL 2021, 10.1.3 |
The DOE figures are oldest. They come from the direct final rule of January 6, 2017, which set the standards effective January 1, 2023, and those are the federal standards in force in September 2026. DOE used 2015 dollars and a 2021 purchase year.
Median installed cost of 71 central air conditioners among 1,739 energy upgrade projects from 15 states and 12 programs, in 2019 national average dollars. The middle half ran from about $4,000 to $9,000.
Lawrence Berkeley National Laboratory, August 2021 (2019 dollars; projects from roughly 2010 to 2020; LBNL describes the data as a sample of convenience)
How does AC unit cost change with system size?
Cost climbs steeply at the large end. In DOE’s 2017 analysis a 14 SEER coil-only split air conditioner cost $2,754 installed at 2 tons, $3,540 at 3 tons and $6,175 at 5 tons, all in 2015 dollars, so the 5-ton system cost 2.2 times the 2-ton system.
Installation explains much of that gap. The DOE technical support document lists installation at $853 for 2 tons and $2,923 for 5 tons, which is 31% of the 2-ton total, 38% at 3 tons and 47% at 5 tons. DOE drew installation labor from RS Means Mechanical Cost Data 2015.
| 14 SEER coil-only split AC (2015$) | Product price | Installation | Total installed | Source |
|---|---|---|---|---|
| 2-ton | $1,901 | $853 | $2,754 | DOE TSD |
| 3-ton | $2,201 | $1,339 | $3,540 | DOE TSD |
| 5-ton | $3,252 | $2,923 | $6,175 | DOE TSD |
The house sets the size, not the budget. A room-by-room load calculation decides tonnage, and our walkthrough of BTU sizing inputs explains the inputs.
How much more does higher SEER2 efficiency add?
In EIA’s 2022-dollar estimates, moving a 3-ton northern system from the 13.4 SEER2 minimum to the 16.2 SEER2 high tier adds $670 installed, from $5,310 to $5,980. The ENERGY STAR tier at 15.2 SEER2 sits at $5,880.
Location sets the legal floor. Under 10 CFR 430.32(c)(6), a split air conditioner under 45,000 Btu/h installed in the Southeast or Southwest must reach 14.3 SEER2, which is why EIA’s southern minimum is $5,520. State lists are in our guide to national and regional SEER2 floors.
Added installed cost of a 16.2 SEER2 system over the 13.4 SEER2 northern minimum, for a 3-ton split air conditioner.
EIA, March 2023 (2022 dollars; difference calculated by The HVAC Brief)
A heat pump also heats. EIA puts a 3-ton heat pump at the 14.3 SEER2 and 7.5 HSPF2 minimum at $6,810 installed, $1,500 above the northern AC minimum, with $4,110 of that in equipment. Payback turns on local energy prices, set out in our heat pump and gas furnace comparison.
How far have equipment prices moved since each estimate?
Equipment prices have risen since every one of these dollar years. The BLS index for HVAC equipment manufacturing reached 324.82 in August 2026, which is 80.7% above its 2015 average, 60.0% above 2019 and 19.0% above 2022.
| Metric | Value | Source |
|---|---|---|
| PPI, August 2026 | 324.82 | BLS PCU333415333415 |
| 2015 average (DOE year) | 179.78 | BLS |
| 2019 average (LBNL year) | 203.04 | BLS |
| 2022 average (EIA year) | 272.89 | BLS |
| Equipment line, 13.4 SEER2 AC, derived | $3,190 | $2,680 × (324.82 ÷ 272.89) |
| Equipment line, 14.3 SEER2 AC, derived | $3,702 | $3,110 × (324.82 ÷ 272.89) |
| Equipment line, heat pump, derived | $4,892 | $4,110 × (324.82 ÷ 272.89) |
Derived rows are our arithmetic: EIA equipment cost times the August 2026 index over the 2022 average. They move only the equipment line, at factory-gate prices, excluding labor and margins.
The monthly path is in our August producer price report. For the comparison with general inflation, see the 2026 price index analysis.
Compare the sourced AC unit cost figures by size and class
Each value carries its own dollar year; do not add or average across sources.
| Metric | Value | Source |
|---|---|---|
| Installed, 13 SEER | $2,703 (2015$) | DOE 8.2.31 |
| Installed, 14 SEER | $2,754 (2015$) | DOE 8.2.31 |
| Installed, 15 SEER | $2,893 (2015$) | DOE 8.2.31 |
| Installation only | $853 (2015$) | DOE 8.2.30 |
| DOE projected 2021 shipment share | 31% | DOE TSD Table 8.2.1 |
| 2026 shipment share, 22,000 to 26,900 Btu/h | 21.8% | AHRI July 2026 |
Old SEER scale, not SEER2.
| Metric | Value | Source |
|---|---|---|
| Installed, 13.4 SEER2, north | $5,310 (2022$) | EIA 2023 |
| Installed, 14.3 SEER2, south | $5,520 (2022$) | EIA 2023 |
| Installed, 13 SEER | $3,456 (2015$) | DOE 8.2.31 |
| Installed, 14 SEER | $3,540 (2015$) | DOE 8.2.31 |
| Installed, 15 SEER | $3,896 (2015$) | DOE 8.2.31 |
| Installation only | $1,339 (2015$) | DOE 8.2.30 |
| DOE projected 2021 shipment share | 39% | DOE TSD Table 8.2.1 |
EIA and DOE dollar years differ.
| Metric | Value | Source |
|---|---|---|
| Installed, 13 SEER | $5,815 (2015$) | DOE 8.2.31 |
| Installed, 14 SEER | $6,175 (2015$) | DOE 8.2.31 |
| Installed, 15 SEER | $6,473 (2015$) | DOE 8.2.31 |
| Installation only | $2,923 (2015$) | DOE 8.2.30 |
| DOE projected 2021 shipment share | 30% | DOE TSD Table 8.2.1 |
| 2026 shipment share, 54,000 to 64,900 Btu/h | 8.6% | AHRI July 2026 |
EIA publishes 3-ton figures only.
| Metric | Value | Source |
|---|---|---|
| Installed, 3-ton, 14.3 SEER2, 7.5 HSPF2 | $6,810 (2022$) | EIA 2023 |
| Equipment portion of that figure | $4,110 (2022$) | EIA 2023 |
| Installed, 3-ton, high tier | $8,620 (2022$) | EIA 2023 |
| Installed, 3-ton, 15 SEER | $4,806 (2015$) | DOE 8.2.34 |
| Average installed, national, 15 SEER | $5,391 (2015$) | 82 FR 1832, V-4 |
The DOE average blends all sizes.
Which central air conditioner sizes ship most in 2026?
Mid-sized systems dominate. Through July 2026, the 22,000 to 26,900 Btu/h band (2-ton) was 21.8% of residential AC and heat pump shipments and the 33,000 to 38,900 Btu/h band (3-ton) was 22.0%, against 8.6% for 54,000 to 64,900 Btu/h (5-ton), per AHRI.
The bands combine ACs and heat pumps, 5,466,841 residential units under 65,000 Btu/h through July; air conditioners alone were 3,063,290. EIA likewise uses 36 kBtu/h, or 3 tons, as its typical capacity, and DOE projected 3-ton units at 39% of coil-only split AC shipments in 2021. The month-by-month detail is in our July shipments analysis.
What these AC unit cost numbers are not
These are modelled or benchmark averages, not quotes and not a measured national price. No federal agency surveys what homeowners pay, the point made in our explainer on why HVAC replacement quotes vary.
- Not a quote. DOE builds installed cost from manufacturer cost, markups, sales tax and a labor estimate.
- Not today’s dollars. They are 2015, 2019 and 2022 dollars.
- Not ductwork. LBNL recorded duct replacement separately, medians $3,645 to $3,953 in 2019 dollars.
- Not your region. EIA splits north and south only; LBNL normalized to a national average.
- Not a random sample. LBNL’s 71 units came from energy program records.
- Not itemized. None of these tables separates permits, electrical upgrades or financing.
Common myth
No federal agency publishes a national “average AC unit cost”. Federal figures were built to test whether efficiency standards save consumers money, and each carries a dollar year. Contractor survey figures are not official data.
New ducts are a separate decision, covered in what a duct test should show. For loan terms to check, see our HVAC financing checklist.
How we researched this
Research date: September 17, 2026. We read the DOE direct final rule and its technical support document, the EIA equipment cost report, the LBNL retrofit cost report, DOE’s rulemaking page, the BLS producer price series, AHRI’s July 2026 release and 10 CFR 430.32. We consulted 12 sources and cite 8.
Excluded: vendor and contractor price surveys (no federal series behind them); DOE’s 2024 commercial unitary analysis (commercial equipment); NREL’s residential measures database (did not respond). Derived figures are our calculations and are labelled.
Freshness: four cited sources are current to 2026 (BLS, AHRI, eCFR, DOE rulemaking page); installed cost dollar years are 2022 (EIA), 2019 (LBNL) and 2015 (DOE). Updates: the producer price adjustment monthly with BLS, installed figures when EIA or DOE publishes new ones.
Frequently asked questions
How much does a central AC unit cost to install?
EIA’s March 2023 report estimates $5,310 installed for a 3-ton split central air conditioner at the northern minimum and $5,520 at the southern minimum, in 2022 dollars. These are modelled planning averages, not quotes, and predate a 19.0% rise in equipment producer prices since 2022.
Does a 5-ton AC cost twice as much as a 2-ton?
Slightly more than twice in DOE’s model. A 14 SEER coil-only split system cost $2,754 installed at 2 tons and $6,175 at 5 tons, in 2015 dollars, per DOE’s 2017 technical support document. Installation grew fastest, from $853 to $2,923.
Is a high-SEER2 air conditioner worth the extra cost?
It depends on the household. EIA estimates a 16.2 SEER2 3-ton system adds $670 installed over the 13.4 SEER2 northern minimum, $5,980 against $5,310 in 2022 dollars. In DOE’s 2017 analysis, a national 16 SEER standard would have cost the average affected buyer $122 over the unit’s life, and 63% of affected buyers would have faced a net cost, in 2015 dollars.
How much more does a heat pump cost than a central air conditioner?
EIA puts a 3-ton heat pump at the 14.3 SEER2 and 7.5 HSPF2 minimum at $6,810 installed, $1,500 more than a northern minimum air conditioner at $5,310, in 2022 dollars. The heat pump also heats, so compare it with an air conditioner plus the heating it replaces.
Have AC prices gone up since these estimates were made?
Equipment prices have. The BLS producer price index for HVAC equipment manufacturing was 324.82 in August 2026, up 19.0% on its 2022 average and 80.7% on its 2015 average. That is a factory-gate measure of equipment prices, not an installed price paid by homeowners.
Do these AC unit cost figures include new ductwork?
No. The federal models price installing the air conditioner itself, and LBNL recorded duct work as a separate measure. In LBNL’s 2021 report, median duct system replacement costs ran from $3,645 to $3,953 in 2019 dollars. A quote with new ducts is a larger job.
Why is my quote higher than the federal estimate?
The estimates are in older dollars, they exclude much of the scope a real job carries, and they are averages. LBNL’s 71 central air conditioner installs had a $5,930 median in 2019 dollars, but the middle half ran from about $4,000 to $9,000, so wide spreads between individual jobs are normal.
Sources
- US Energy Information Administration (prepared by Guidehouse and Leidos). “Updated Buildings Sector Appliance and Equipment Costs and Efficiencies.” March 2023. https://www.eia.gov/analysis/studies/buildings/equipcosts/pdf/full.pdf. Accessed September 2026.
- US Department of Energy. “Energy Conservation Program: Energy Conservation Standards for Residential Central Air Conditioners and Heat Pumps; Direct final rule.” 82 FR 1786, January 6, 2017. https://www.federalregister.gov/d/2016-29992. Accessed September 2026.
- US Department of Energy. “Final Rule Technical Support Document: Residential Central Air Conditioners and Heat Pumps.” Docket EERE-2014-BT-STD-0048-0098, December 2016. https://downloads.regulations.gov/EERE-2014-BT-STD-0048-0098/attachment_1.pdf. Accessed September 2026.
- Lawrence Berkeley National Laboratory. “The Cost of Decarbonization and Energy Upgrade Retrofits for US Homes.” August 2021. https://escholarship.org/uc/item/0818n68p. Accessed September 2026.
- US Bureau of Labor Statistics. “Producer Price Index by Industry: Air Conditioning, Refrigeration and Forced Air Heating Equipment Manufacturing, series PCU333415333415.” https://data.bls.gov/timeseries/PCU333415333415. Accessed September 2026.
- Air-Conditioning, Heating, and Refrigeration Institute. “AHRI Releases July 2026 U.S. Heating and Cooling Equipment Shipment Data.” September 11, 2026. https://ahrinet.org/sites/default/files/2026-09/July2026StatisticalRelease.pdf. Accessed September 2026.
- Electronic Code of Federal Regulations. “10 CFR 430.32, Energy and water conservation standards and their compliance dates.” https://www.ecfr.gov/current/title-10/chapter-II/subchapter-D/part-430/subpart-C/section-430.32. Accessed September 2026.
- US Department of Energy. “Consumer Central Air Conditioners and Heat Pumps.” https://www.energy.gov/cmei/buildings/consumer-central-air-conditioners-and-heat-pumps. Accessed September 2026.
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