AC installation in Dallas costs about $5,000 to $20,000 in 2026, based on 4 published DFW ranges.
Most mid-tier AC-only replacements on existing ducts are quoted between $7,000 and $13,000.
The price moves with system size, efficiency, refrigerant, whether the furnace or air handler and ducts are replaced, electrical work and the permit. Every figure below is a range someone else published, with the date we read it. None is our quote, and none predicts yours.
Independent publisher, not a contractor
Reviewed · 22 named sources · No named reviewer yet; see our editorial policy.
“AC replacement” covers three different jobs, and most of the spread between Dallas quotes comes from which one is being priced. Identify yours first, then read the matching row.
Published DFW ranges for the three kinds of AC replacement
Job
What is replaced
Published range
Source
AC only, 3 ton
Outdoor unit + indoor coil; ducts and furnace stay
For Oncor customers, the 2026 program caps the incentive per system at $2,000 (2 ton) to $3,400 (5 ton), paid through a participating contractor. Rules for Oncor, Garland, Denton and CoServ customers are on Dallas AC rebates by utility.
Central AC replacement cost by size
Replacing the outdoor unit and the indoor coil and reusing the existing ducts. The low end of each row is an entry 14.3 SEER2 system; the high end is a premium variable-speed system.
Published installed price ranges for AC-only replacement in DFW by system size
System size
Typical home (rough guide only)
Published range
Sources
2 ton
under ~1,500 sq ft
$7,500–$15,000
1
3 ton
~1,500–2,000 sq ft
$5,500–$16,500
3
4 ton
~2,000–2,500 sq ft
$7,500–$18,500
3
5 ton
over ~2,500 sq ft
$7,500–$20,000
3
The 2-ton row rests on a single source, so treat it as the least settled. The square-footage column is a rule of thumb, not a sizing method.
Heat pump and ductless mini-split costs
Fewer published Dallas sources exist for these, so each row is shown on its own rather than merged into one range. A national row is labeled as national.
Published installed ranges by system, 2026
Central AC, 3 ton$5.5k–$16.5k
Central AC, 4 ton$7.5k–$18.5k
Heat pump, ducted$6.5k–$14.5k
Mini-split, 1 zone$2k–$5.2k
Mini-split, 3 zones$6.5k–$12k
Each bar runs from the lowest to the highest published figure for that system, on a scale starting at $0. Central AC: DFW sources, existing ducts. Heat pump: two DFW sources, all sizes. Mini-split: Filterbuy (Dallas, an equipment seller) and RFP Homes (DFW). Not our prices; the tables list every row and source.
Published installed price ranges for heat pumps and ductless mini-splits
A heat pump replaces both the AC and the furnace, so compare it with a full-system quote, not an AC-only one. Mini-splits are priced per indoor zone. Which one fits is covered in AC system options for Dallas homes.
What changes the number on a Dallas quote
Published cost adders for a DFW air-conditioning installation
Item
Published adder
Why it varies
Replacing the furnace or air handler too
+$1,000–$4,000
Most DFW homes pair the AC coil with a gas furnace in the attic; the coil sits on it.
New or major ductwork
+$3,000–$8,000
Attic ducts in older homes leak; ENERGY STAR puts typical duct losses at 20–30% of the air moved.
Stepping up to 16+ SEER2
+$1,000–$3,000
Two-stage and variable-speed equipment costs more to buy.
A2L refrigerant equipment vs older R-410A stock
+$500–$1,000
New R-454B and R-32 equipment; pre-2025 R-410A stock may still be installed.
Electrical panel work
+$500–$2,000
A new breaker, disconnect or panel capacity for a larger or electric-heat system.
Adders as published by HVAC Services Pro (DFW, 2026-03-06 and 2026-04-13), Cold Factor Heating & Air (Flower Mound, 2026) and HVACProjectCost.com (Dallas, 2026-08-02). Duct losses: ENERGY STAR, "Duct Sealing", read 2026-10-20.
Cost by scope of work
The fastest way to make sense of a quote is to split it into the jobs it contains. Most Dallas quotes are one core system plus zero to three add-ons, and each add-on has its own published range.
The table puts the core systems and the common add-ons in one place. Read the Area column before adding rows together: some figures are Dallas or DFW, others are national, and a national figure says nothing certain about a Dallas price.
Published installed cost by scope of work, with geography and source
Scope
Published range
Area
Source and notes
AC-only change-out, 3 ton, existing ducts
$5,500–$16,500
DFW
Three DFW contractor and cost pages (table above)
AC-only change-out, 4 ton, existing ducts
$7,500–$18,500
DFW
Three DFW contractor and cost pages (table above)
Ducted heat pump, all sizes
$6,500–$14,500
DFW
HVACProjectCost.com (2026-08-02); HVAC Services Pro (2026-03-06)
Duct sealing or repair
$1,300–$8,000
Dallas
Budget Heating, AC replacement cost in Dallas. Sealing through partial replacement, depending on scope
New ductwork, about 2,000 sq ft home
$6,000–$7,000
Dallas
HVAC.com, HVAC replacement costs in Dallas, TX. Page dated May 2024; treat as indicative
Panel upgrade, 100 A to 200 A
$1,800–$3,500
National
Voltflow, electrical panel upgrade cost 2026. A new meter base or service riser adds $500–$1,000
Gas furnace replacement
$4,000–$10,000
National
Budget Heating, furnace replacement cost guide. Unit, materials, labor and permits
Furnace plus 3-ton AC together
$10,500–$13,500
National
Budget Heating, furnace replacement cost guide
Smart thermostat, installed
$120–$450
National
PickHVAC, thermostat installation cost. A C-wire or transformer adds $80–$350
Dallas permit and inspection, mini-split
$300–$900
Dallas
Filterbuy, Dallas mini-split installation (an equipment seller). As published by the seller; confirm the fee with the city
Third-party published ranges read 2026-10-20, not this site's prices. Older pages (such as HVAC.com’s Dallas page, dated May 2024) are marked as indicative.
Use the table as a checklist, too
If a quote is far above the core-system range, find out which add-on rows it includes. If it is far below, find out which ones it leaves for later.
Three worked budgets
The homes below are hypothetical, built only by adding the published ranges above. They show how scope, not brand, moves a total. They are not estimates for any real house, and the wide spread in each is the honest result of using other people's ranges.
A: straight change-out
Say a 1,800 sq ft house in Plano built in the late 1990s, with a 3-ton AC that has failed, a furnace still in good shape and ducts that tested tight. The job is outdoor unit plus matching coil.
$5,500–$16,500 (DFW, 3-ton AC-only range).
B: older home, full system
Say a 1978 Garland ranch house with an original-era attic furnace, a worn 3-ton AC and leaky ducts. The job is furnace plus AC together, plus duct sealing or partial repair.
$11,800–$21,500 (national furnace-plus-AC range $10,500–$13,500, plus Dallas duct range $1,300–$8,000).
C: heat pump with a panel upgrade
Say a 2,200 sq ft Richardson house on a 100 A panel whose owner wants a ducted heat pump instead of AC plus gas furnace, and the contractor says the panel needs to go to 200 A.
$8,300–$18,000 (DFW heat pump range plus national panel range $1,800–$3,500).
Notice what the examples share. The core equipment range is the biggest number, but the add-ons decide whether a quote lands at the low or high end. Budget B mixes national and Dallas figures, so treat it as the loosest of the three.
To narrow a range for your own house, you need a load calculation and a contractor's look at the ducts and panel. The sizing preparation tool lists what to gather before that visit, and the older-homes guide explains why budget B's add-ons are common in pre-1990 houses.
How to read the price lines on a quote
A good quote lets you find each part of the job and its cost, or at least confirm that it is included. These are the lines to look for, in the order they usually appear.
Equipment, with model numbers. The outdoor unit, the indoor coil and, if replaced, the furnace or air handler. Model numbers let you check the size, SEER2 rating and whether the pieces are a matched system.
Installation labor. Often bundled with equipment. A bundled price is normal; what matters is that the scope is written out.
Refrigerant lines and line set. Reused or replaced. A line set sized for an older system may not suit the new one, so ask which and why.
Pad, drain pan, condensate line and float switch. Small items that are easy to leave off and charge for later.
Electrical. Disconnect, whip, breaker and any panel work. Panel work may be a separate electrician's line.
Duct work. Transitions to fit the new coil, sealing, repair or replacement, stated plainly.
Permit and inspection. Who pulls it and whether the fee is in the price.
Removal and refrigerant recovery. Haul-away of old equipment and recovery of its refrigerant.
Thermostat. Reused, replaced, or upgraded. The national installed range is $120–$450.
Tax, warranty and payment terms. Materials tax, the labor warranty term and the deposit schedule.
The license number and the TDLR consumer notice should also be on the document; the contract checklist covers the rest of the paperwork. When you have more than one quote, put the lines side by side in the quote comparison tool.
Replacement vs first-time install
Nearly all the ranges on this page are for replacement: the house already has ducts, a pad, refrigerant lines, a drain and a circuit sized for an air conditioner. A first-time installation has to create some or all of that, so it starts from a different number.
How a replacement and a first-time install differ in scope
Item
Replacement
First-time install
Ducts
Usually reused, maybe sealed
New ducts, or a ductless system instead (Dallas new-duct range $6,000–$7,000 for about 2,000 sq ft, page dated May 2024)
Electrical
Existing circuit, maybe a new disconnect
New circuit; possibly panel capacity
Line set, drain, pad
Often reused or updated
All new
Permit
Mechanical permit
Mechanical and often electrical permit
For a house with no ducts, a mini-split priced per zone is often the comparison point. See central air without ductwork for how the two approaches compare.
Timing and what it does to price
Timing changes your options more reliably than it changes the price. No source we found publishes a seasonal discount for DFW installs, so this page does not claim one.
What is documented is the heat. NWS Fort Worth puts the average first 100 °F day at DFW in early July and the last in late August (Average first 100 °F day: July 1. Average last: August 27). A system that fails in that window leaves little time to collect and compare three quotes.
Plan before it fails. ENERGY STAR says to consider replacement when a heat pump or air conditioner is more than 10 years old. If yours is past that age, getting quotes in spring or fall gives you time to compare.
Ask about equipment stock. Some older R-410A stock may still be offered alongside newer A2L equipment; ask which you are being quoted and why.
Ask how long the price holds. A quote with an expiry date tells you how long you have to decide.
In an emergency, still get it in writing. A short decision window is not a reason to skip model numbers, scope and the license number.
The repair vs replacement guide helps decide whether a mid-summer repair can carry the system to a calmer season.
Paying and financing: questions to ask
acinstallationdallas.com does not arrange or recommend any lender. The paying for AC replacement guide goes further, including deferred interest. These are the questions to ask whoever offers you payment terms, so you can compare a financed quote with a cash one on equal footing.
Is the cash price the same as the financed price? If a financed offer carries a higher equipment price, the "low rate" is partly built into the total.
Who is the lender, and is the contractor paid a fee by it? You are entitled to know who holds the loan.
What is the APR, the term and the total paid over the life of the loan? Compare the total, not the monthly payment.
Is a promotional rate deferred interest? Ask what happens if the balance is not paid in full by the promotional end date.
Does the loan place a lien on the house? Texas has written-contract requirements for a lien on a homestead, including both spouses' consent where the owner is married; ask whether they apply.
What deposit is due, and when is the balance due? Tying the final payment to a passed inspection is a reasonable request.
Can you cancel? Under Texas Business and Commerce Code §601.051, a consumer may cancel a consumer transaction until midnight of the third business day after signing, where the sale was solicited and agreed somewhere other than the merchant’s place of business and the price is over $25.
No federal credit to count on
The federal 25C credit does not apply to equipment placed in service after 31 December 2025. If a quote's math depends on a credit or a utility rebate, ask for the program name and confirm it yourself before signing.
Estimate a size and price band for your home
Use this to spot a quote that is far off, not to choose equipment. It turns square footage into a rough tonnage band and shows the published range for that size.
Size and price band estimator
A DFW rule of thumb for sanity-checking quotes: roughly one ton of cooling per 550–650 square feet of conditioned space in this climate, adjusted for stories and sun exposure. It is not a load calculation. Dallas requires a Manual J from the contractor before the system is sized; use this to spot a quote that is far off.
Published-range sources by tonnage: Cold Factor Heating & Air (Flower Mound, TX); HVAC Services Pro (DFW); HVACProjectCost.com, Dallas page. Full-system and ductwork adders from HVAC Services Pro (2026-03-06) and HVACProjectCost.com (2026-08-02).
Your band
3–3.5 tons
Ask for the Manual J result; it should land near this.
Published DFW range for this size$5,500–$16,500
Full-system adder (furnace/air handler)—
New ductwork adder—
Sources for this size3 published DFW ranges
These are published 2026 figures from DFW contractors and cost sites, with the dates shown below. They are not quotes from us and not a prediction of yours. A quote outside the band is not wrong; it should explain why.
Texas is in the DOE Southeast region. Since 1 January 2023 a split-system central AC under 45,000 BTU (about 3.75 tons) must be at least 14.3 SEER2 on the date it is installed; larger systems need 13.8. Split heat pumps need 14.3 SEER2 and 7.5 HSPF2 nationwide.
Equipment made or imported since 1 January 2025 uses lower-GWP A2L refrigerants (R-454B or R-32) instead of R-410A. An EPA rule finalized in May 2026, effective 27 July 2026, removed the 1 January 2026 cutoff, so contractors may install pre-2025 R-410A systems until that stock runs out.
The federal Energy Efficient Home Improvement Credit (25C) applied to qualifying property placed in service before 31 December 2025. It is not available for a system installed in 2026. Oncor, the wire-and-meter utility for most of DFW, pays residential efficiency incentives through participating service providers, not to homeowners. Amounts change by year; ask the contractor whether they participate and verify on the program site.
IRS; Oncor program site (verify: the Oncor page could not be confirmed on 2026-10-20)
Sales tax
In Texas, labor to repair or remodel residential property is not taxable; the materials are. Your invoice can be lump-sum (tax built into the contractor's material cost) or separated (tax shown on the materials line). Both are normal.
The permit fee belongs in the quote too. Who issues it depends on your address: see the Dallas-area permit guide.
Prices raise other questions: whether to repair instead, how to size, what goes in the contract. The Dallas AC installation guides cover each one, and the AC installation FAQ gives the short answers.
Every source behind these ranges
We publish a figure of our own only once our quote log holds at least twelve dated DFW quotes for that size. It does not yet, so every number here is someone else's, as the editorial policy explains.
AC only, 3 ton $5,500–$9,500; 4–5 ton $7,500–$11,500; AC + gas furnace $6,000–$13,800; heat pump $6,500–$14,500. Ductwork replacement adds $3,500–$8,000.
How much does a new AC unit cost installed in Dallas?
Published 2026 DFW ranges for replacing the outdoor unit and indoor coil on existing ducts run from about $5,000 to $20,000, with most mid-tier jobs quoted at roughly $7,000 to $13,000. These are figures from named DFW sources, not our prices.
Why do two Dallas quotes for the same house differ by thousands?
Usually because they are not for the same job: different tonnage, efficiency tier, refrigerant, or a different answer on the coil, ducts, electrical and permit. Put them side by side in the quote-comparison tool before judging the price.
Can I size my AC from square footage?
Not reliably. Square footage gives a rough band to sanity-check a quote. The size should come from an ACCA Manual J load calculation that accounts for windows, insulation, orientation and ducts.
Is there a federal tax credit for a new AC in 2026?
No. The federal 25C credit applied to qualifying equipment placed in service before 31 December 2025. Utility incentives may exist through Oncor participating contractors; confirm the current program before counting on one.
Does Texas charge sales tax on AC installation?
Labor to repair or remodel residential property is not taxable in Texas; the materials are. A quote may build the tax into the materials cost or show it separately. Both are normal.
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