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Texas AC Guide

AC and Furnace Replacement Cost in Dallas

Last updated 2026-08-31

Estimate for your Dallas home

AC and Furnace Replacement in Dallas

$7,680 to $12,000

  • 3 ton system for roughly 2,000 sq ft in Dallas
  • 14.3 SEER2, the federal minimum for Texas

This is an estimate, not a quote. Correct sizing comes from a Manual J load calculation that accounts for your insulation, windows and orientation. Ask any contractor for theirs in writing.

The short answer

AC and Furnace Replacement in Dallas usually runs $7,680 to $12,000. Replacing cooling and heating equipment at the same time, which is usually cheaper than doing them two years apart.

What drives the price here

Your system runs far more than the national average

This is the single biggest reason national cost guides mislead Dallas homeowners. Cooling season here runs most of the year, and a system accumulates compressor hours at a pace that national lifespan figures were never built around. The practical effect is that equipment reaching its mid teens in Dallas is closer to the end of its usable life than the same equipment would be in a milder climate, and the repair-versus-replace math tips earlier as a result.

Sizing is a calculation, not a rule of thumb

Dallas sits in climate zone 3A, hot enough that undersizing shows up immediately in August and humid enough that oversizing shows up as a house that feels cool and damp. Correct sizing comes from a Manual J load calculation accounting for insulation, window area and orientation, not from square footage alone. Ask for it in writing.

Oncor delivers your power, someone else sells it

Dallas is in the deregulated part of the Texas market. You buy electricity from a retail provider you chose, while Oncor owns the wires and runs the efficiency programs. The practical consequence for a replacement is that incentives usually flow through a participating contractor rather than being something you apply for yourself, so whether your contractor is enrolled in the program directly determines whether you see the money. Ask before you sign, not after.

When the equipment in this market was installed

Older core than the other four metros, with a large 1960s-1980s stock where original gas furnaces are long past replacement and the heating side of the decision actually matters. That matters for a practical reason: systems installed with a house tend to fail on a similar schedule across a neighborhood, so an unusually busy season for contractors in one part of Dallas is often a whole subdivision reaching end of life at once. It also affects wait times, since the same weeks are busy for everyone.

How to check a quote before you sign

  1. Verify the license. Air conditioning contractors in Texas are licensed by the Texas Department of Licensing and Regulation. Ask for the ACR license number and confirm it is active and held by the company, not borrowed from someone who no longer works there.
  2. Ask for the Manual J. In writing. If the tonnage came from square footage alone, the sizing is a guess.
  3. Confirm the permit is included in the price and pulled by the contractor.
  4. Check the coil and condenser are a matched set. Replacing only the outdoor unit leaves a mismatched system that underperforms its rating and can void the warranty.
  5. Get the model numbers and confirm the efficiency rating yourself rather than taking the figure on the proposal at face value.
  6. Get more than one quote. Spread on this work is wide, and the second quote is the cheapest information you will ever buy.

Common questions

How much does ac and furnace replacement cost in Dallas?
Most Dallas homeowners pay $7,680 to $12,000 for ac and furnace replacement. Replacing cooling and heating equipment at the same time, which is usually cheaper than doing them two years apart.
How long should this last in Dallas?
15 to 20 years is the usual range, and Dallas systems land in the lower half of it because equipment here runs far more hours per year than the national average.
Do I need a permit for this work?
Permit rules are set by the local jurisdiction rather than the state, so they differ across Texas. We publish the rule for Dallas on this page once we have confirmed it directly with the permitting authority.

Other work in Dallas

Texas AC Guide is not a contractor and does not perform HVAC work. Cost figures are estimates based on typical Dallas installations and are not a quote.