Richardson, TX Cost Guide
AC Replacement Cost in Richardson, TX: 2026 Prices, Rebates & How to Compare Quotes
Most Richardson homeowners pay $7,500 to $14,000 to replace a central AC with a matching indoor coil, and $11,000 to $18,000+ for a full system with a furnace. Here is what drives the price and how to compare quotes.
Written by the Richardson TX HVAC Hub team | Last updated: September 30, 2026 | 7 min read
Quick Answer
Key Takeaways
- AC replacement in Richardson, TX typically costs $7,500 to $14,000 for a new condenser and indoor coil, and $11,000 to $18,000+ for a full system with a furnace.
- New AC systems in Texas must meet at least 15.2 SEER2, the federal minimum for split systems in the southern region since 2023.
- Replacing only the outdoor unit rarely works in 2026 because new systems use R-454B or R-32 refrigerant, which requires a matching new indoor coil.
- AC replacement in Richardson requires a city mechanical permit, and the contractor must be registered with the City of Richardson to pull it.
- Richardson homeowners are in Oncor’s service area and may qualify for high-efficiency HVAC incentives through Oncor’s Take a Load Off Texas program.
- Richardson homes built in the 1960s to 1980s often need duct work during AC replacement, which can add to the total.
The Basics
What Is Included in an AC Replacement?
An AC replacement is the removal of an existing central air system and installation of new matched cooling equipment, plus the connections needed to make it run safely and to code. A complete AC replacement in Richardson usually includes:
- Outdoor condenser (or heat pump)
- Indoor evaporator coil
- Furnace or air handler (on full system replacements)
- Refrigerant line set, or flush of the existing line set
- Electrical disconnect and whip
- Condensate drain line and safety float switch
- Thermostat
- City of Richardson permit and inspection
- Removal and disposal of old equipment
2026 Pricing
How Much Does AC Replacement Cost in Richardson?
AC replacement in Richardson costs between $7,500 and $22,000+ depending on system type, size, and efficiency. Typical installed prices in Richardson and North Dallas are shown below.
| System | Size | Typical Installed Range |
|---|---|---|
| AC condenser + evaporator coil | 2.5 to 3 ton | $7,500 to $10,500 |
| AC condenser + evaporator coil | 4 to 5 ton | $9,500 to $14,000 |
| Full split system (AC, coil, gas furnace) | 3 to 5 ton | $11,000 to $18,000+ |
| Heat pump system (heat pump + air handler) | 3 to 5 ton | $10,000 to $17,000+ |
| Variable-speed high-efficiency system | 3 to 5 ton | $15,000 to $22,000+ |
Cost Factors
What Affects AC Replacement Cost in Richardson?
System Size
AC system size should be set by a Manual J load calculation, not the old unit’s tonnage or a square-footage rule. An oversized AC short cycles and leaves a Richardson home humid. An undersized AC runs nonstop during 100°F+ summer days.
Efficiency Rating (SEER2)
SEER2 ratings measure cooling efficiency, and higher ratings cost more upfront. The Texas minimum for new split AC systems is 15.2 SEER2. Richardson air conditioners run five to six months a year, so a higher SEER2 system often pays back for homeowners who plan to stay 8+ years.
Refrigerant Type
New AC systems now use R-454B or R-32 refrigerant in place of R-410A. The refrigerant change means the indoor coil almost always gets replaced with the outdoor unit.
Installation Conditions
AC installation cost rises when the job needs extra work:
| Added Work | Why It Comes Up |
|---|---|
| Duct repair or replacement | Older ducts are undersized or leaky |
| Electrical disconnect or breaker upgrade | New equipment has different amperage |
| Drain line, pan, or float switch | Code requirement for attic units |
| Attic platform or access changes | Tight or unsafe attic access |
| New thermostat | Old thermostat not compatible |
Local Insight
What AC Contractors Don’t Always Tell Richardson Homeowners
- Older Richardson homes often have undersized ducts. Homes in Canyon Creek, Richland Park, and Prairie Creek were largely built between the 1960s and 1980s. A new high-efficiency AC connected to original ductwork may never hit its rated efficiency.
- Attic heat raises labor costs. Most Richardson furnaces and coils sit in attics that pass 130°F in summer. Narrow pull-down stairs and missing walkways add install time.
- “Condenser only” quotes are a red flag in 2026. A quote that replaces the outdoor unit and keeps the old coil may void the manufacturer warranty because of the refrigerant change.
- Newer homes cost less to replace. Homes near CityLine and Breckinridge usually have better duct layouts and attic access, which keeps pricing near the low end of the range.
- Oncor rebate funding runs out. Oncor program budgets are limited each year, so a rebate available in spring may be gone by late summer.
Decision Guide
Should You Repair or Replace Your AC?
Replacing an AC usually makes sense when the system is 12 to 15+ years old, uses R-22 refrigerant, or needs a repair costing more than half the price of a new system.
| Repair Is Usually Better | Replacement Is Usually Better |
|---|---|
| System under 10 years old | System 12 to 15+ years old |
| Failed capacitor, contactor, or fan motor | Failed compressor on an older unit |
| First major repair | Repairs two summers in a row |
| Uses R-410A | Uses R-22 (installed before about 2010) |
| Even cooling throughout the home | Hot rooms and rising electric bills |
Permits
Richardson AC Permit Requirements
AC replacement in Richardson requires a mechanical permit from the City of Richardson. Contractors must be registered with the City before a permit can be issued. Richardson has adopted the 2021 International Energy Conservation Code with local amendments.
The contractor should pull the Richardson permit and schedule the inspection. Skipping the permit can create problems with insurance claims, equipment warranties, and future home sales.
Rebates
Oncor Rebates for AC Replacement in Richardson
Richardson homeowners are in Oncor’s service area and may qualify for incentives on high-efficiency HVAC replacements through Oncor’s Take a Load Off Texas program. Oncor program availability and requirements change each year. Ask the contractor whether the contractor participates and whether the selected equipment qualifies before signing.
Quote Checklist
How to Compare AC Replacement Quotes in Richardson
Comparing AC replacement quotes works best when every contractor prices the same scope. Check each written quote for these items:
- Equipment: Brand, model numbers for indoor and outdoor units, tonnage, and SEER2 rating
- Included components: Condenser, coil, furnace or air handler, thermostat, pad, and line set
- Installation scope: Ductwork, electrical, drain, attic access, and haul-away
- Permit: Who pulls the Richardson permit and schedules inspection
- Warranty: Manufacturer parts coverage (and registration requirements) plus contractor labor warranty
- Total price: What could change the total, and whether rebates or financing are already included
A quote far below the others usually leaves out work. A quote far above the others should list the specific equipment or work that explains the difference.
Hiring
What to Look For in a Richardson AC Contractor
- Holds an active TDLR air conditioning license (look it up here)
- Carries general liability and workers’ comp insurance
- Is registered with the City of Richardson
- Sizes the system with a Manual J load calculation
- Provides a written, itemized quote with model numbers
- Participates in Oncor’s rebate program
- Offers a written labor warranty
FAQ
Frequently Asked Questions
How much should a new AC unit cost in Richardson?
A new AC unit with an indoor coil typically costs $7,500 to $14,000 installed in Richardson, depending on size and efficiency.
Can I just replace the outside unit?
Replacing only the outside AC unit rarely works in 2026. New refrigerants require a matching indoor coil to run correctly and keep the warranty valid.
How long does it take to replace an AC?
A standard AC replacement takes one day. Jobs with duct or electrical work can take two to three days.
Do I need a permit to replace my AC in Richardson?
Yes. Richardson requires a mechanical permit for AC replacement, and a city-registered contractor must pull it.
When is the best time to replace an AC in Texas?
Spring and fall are the best times to replace an AC in Texas. Contractors have shorter wait times, and homeowners avoid going without cooling in July.
Is my 15-year-old AC worth fixing?
A 15-year-old AC is usually not worth a major repair such as a compressor. A small repair such as a capacitor can still make sense.
Are there rebates for a new AC in Richardson?
Richardson homeowners may qualify for Oncor rebates on high-efficiency HVAC systems. Check current program funding before counting on the incentive.
Is financing available for AC replacement?
Most Richardson HVAC contractors offer financing. Compare the total financed cost, not just the monthly payment.
Free Quote
Get a Richardson AC Replacement Quote
Richardson TX HVAC Hub connects homeowners with licensed local contractors for written AC replacement quotes. Each quote should cover equipment, full installation scope, permit handling, and rebate eligibility.
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Serving Richardson, Plano, Garland, Murphy, and Lake Highlands.