If your 5 ton air conditioner is blowing warm air or leaking refrigerant, a failing evaporator coil is likely the culprit. Five ton systems cool the largest residential spaces in North Texas, and they carry the highest evaporator coil replacement costs of any standard home ac unit. This guide breaks down real 2026 pricing, brand-by-brand comparisons, and when it makes financial sense to repair versus replace your entire system.

Key Takeaways

• Most 5 ton evaporator coil replacements in Dallas–Fort Worth run about $2,000–$3,800 installed, depending on brand, coil type, warranty status, and access difficulty.
• Under-warranty coil swaps typically cost $1,500–$2,300 (labor, refrigerant, and materials only), while out-of-warranty jobs often cost $2,000–$3,800.
• Evaporator coil replacement costs range from $1,000 to $5,000 depending on warranty status, with the average cost to replace a 5-ton ac evaporator coil ranging from $2,800 to $4,500 for premium or complex jobs.
• Trane, Lennox, and other premium brands cost more than Goodman, Rheem, and similar mid-range residential hvac brands for the same 5 ton coil size.
• If the system is 10–15+ years old, a full system replacement for $10,000–$18,000 may be smarter than spending heavily on a single coil for an aging system.

How Much Does It Cost to Replace a 5 Ton Evaporator Coil?

For DFW homeowners in Dallas, Plano, Frisco, McKinney, Arlington, Irving, and surrounding cities, the typical cost to replace a 5 ton evaporator coil in 2026 falls between $2,000 and $3,800 installed. Evaporator coil replacement costs range from $627 to $5,000 across all system sizes and scenarios, but 5 ton systems consistently land at the upper end because of their size and refrigerant requirements.

This replacement cost includes the new evaporator coil, removal of the old indoor coil, refrigerant recovery and recharge, brazing, vacuum testing, and professional labor from a licensed hvac technician. Five ton systems represent the largest common residential ac unit size in North Texas-typically cooling homes of 2,400 to 3,500+ square feet-so they carry the highest coil replacement cost of any standard residential setup. Costs for evaporator coil replacement can reach $2,700 or more even for mid-range brands at this tonnage.

At HVAC Services Pro, we specialize in full system replacements and large-tonnage coil work across the DFW metroplex. If you need a clear number before committing, request a free, no-obligation quote.

5 Ton Evaporator Coil Replacement Cost Breakdown

Your final bill is made up of several components: parts, labor, refrigerant, materials, and local taxes or permit fees. Here is how those costs stack up for a 5 ton system in DFW:

Labor costs for evaporator coil replacement can exceed $1,200 on complex jobs. Labor costs typically range from $75 to $150 per hour in the DFW market, and a 5 ton coil swap takes 4–8 hours depending on access. Attic and crawlspace units common in Plano, Garland, and Richardson add 1–2 hours versus ground-level installations. Accessibility impacts the labor hours needed for evaporator coil installation and replacement in DFW more than almost any other variable.

Refrigerant costs vary based on the type used in the system. R-410A is standard and moderately priced, while R-22 systems are far more expensive to recharge because the refrigerant is phased out. Evaporator coil replacement costs range from $2,000 to $5,000 at this tonnage when you factor in all line items.

Why 5 Ton Systems Cost More Than Smaller Systems

Five ton is the top end of common residential hvac system tonnage, and every component scales up accordingly. Replacement costs increase with the size of the ac unit, and evaporator coil prices increase with the ac unit’s tonnage. Here is why:

• Larger coil surface area: More metal, more fins, and a bigger cased or uncased cabinet means higher material costs.
• Higher refrigerant charge: A 5 ton system often requires 10–15+ pounds of refrigerant to recover, replace, and leak-check-compared to 5–8 pounds for a 2 or 3 ton system.
• Harder access in larger homes: These systems typically serve two-story homes in Dallas, McKinney, Allen, and Frisco where the air handler sits in a hot attic or above a furnace in a tight closet.
• Longer labor time: Expect 4–6+ hours for a 5 ton coil versus 2–3 hours for smaller units, adding $300–$600 to labor costs.

If you have a smaller system, check our guides on 2 ton evaporator coil replacement cost in DFW, 3 ton evaporator coil replacement cost in DFW, or 4 ton evaporator coil replacement cost in DFW for sizing-specific pricing, or review our broader 2 ton evaporator coil replacement guide for DFW homeowners if you are still comparing repair options.

Signs Your Evaporator Coil Is Failing

A 5 ton system cooling a large DFW home shows symptoms quickly when the coil fails-especially during summer heat when the air conditioning system runs almost continuously. Watch for these warning signs:

• Warm air comes from the vents even with the thermostat set low, or you notice warm air coming from registers that should be cold.
• Frost or ice forms on the evaporator coil or refrigerant lines near the air handler.
• The ac unit frequently starts and stops without cooling the home to the desired indoor temperature.
• High energy bills spike during Dallas summers without a clear reason.
• Unusual sounds like hissing or banging come from the ac unit, especially indoor components hissing near the coil area, which suggests leaking refrigerant.
• Weak airflow or musty odors from vents, sometimes indicating drain pan overflow or coil corrosion.
• Leaking occurs near the indoor components, with visible moisture around the indoor unit.

These symptoms can also point to other issues-low refrigerant charge, a bad blower fan, or duct leaks-so a professional diagnostic is necessary before deciding on an ac evaporator coil replacement. Schedule a coil leak test and full evaluation before committing to a major repair.

What Causes Evaporator Coils To Leak?

Most 5 ton evaporator coil replacements are driven by a refrigerant leak rather than age alone. Here are the primary causes:

• Formicary corrosion on copper tubing from indoor air contaminants (cleaning products, paint fumes, carpet off-gassing) combined with high Dallas humidity.
• Age and wear-coils in systems 10–15+ years old develop pinholes and weakened joints naturally.
• Chemical exposure and attic conditions accelerating corrosion, especially when warm air passes over corroded surfaces coils continuously.
• Dirty air filters blocking airflow, which causes the coil to freeze and thaw repeatedly, stressing joints and tubing.
• Poor installation or manufacturing defects, including bad brazing or mismatched fittings.

Newer all-aluminum evaporator coils used by Trane technologies, American Standard, RunTru, and other associated residential hvac brands resist formicary corrosion better than traditional copper-tube designs. If your current coil is copper and has developed multiple leaks, an all-aluminum new coil may last longer in North Texas conditions.

Repeated refrigerant top-offs without fixing the leak wastes money and violates EPA guidelines. A proper repair means either sealing the leak or-more often with a bad evaporator coil-performing a full coil replacement. For homeowners weighing leak repair against replacement, our guide on refrigerant leak repair cost in DFW provides detailed comparisons and expands on refrigerant leak detection and repair pricing in Dallas–Fort Worth.

5 Ton Evaporator Coil Replacement Cost By Brand

Brand has a significant impact on 5 ton evaporator coil replacement cost in Dallas–Fort Worth because of differences in part pricing, coil design, and availability. A coils are the most common evaporator coil type, but N coils cost 15% to 25% more than A-coils, and slab coils are the least expensive evaporator coil option. Slab units and z coils are less common in residential applications but appear in some horizontal air handler configurations.

Trane 5 Ton Evaporator Coil Replacement Cost

Trane and American Standard systems are among the most popular in larger Dallas, Frisco, and McKinney homes. A 5 ton Trane evaporator coil replacement in DFW typically costs $2,300–$4,200 installed, depending on warranty status and coil type-cased vs. uncased, A-coil vs. N-coil.

Trane uses all-aluminum Comfort™ coils designed for corrosion resistance and high SEER2 efficiency when properly matched to the outdoor unit. HVAC Services Pro installs and services Trane and RunTru systems and can quote both a coil-only repair and a full 5 ton system replacement. For detailed Trane system pricing, see our Trane HVAC prices in DFW guide, which also covers air conditioning Trane prices and installed system deals in DFW.

Carrier 5 Ton Evaporator Coil Replacement Cost

Carrier and Bryant systems are common in newer subdivisions across Plano, Allen, and Richardson. A typical Carrier 5 ton coil replacement cost in DFW runs $2,100–$3,800 installed, with higher prices for premium cased N-coils and tight attic installations.

Carrier, Bryant, and Payne often share compatible coil designs, which helps with part availability during peak summer months. Matching the new Carrier coil’s system tonnage and SEER2 rating to the existing central air conditioner condenser is essential for efficiency and warranty compliance.

Lennox 5 Ton Evaporator Coil Replacement Cost

Lennox is a high-end brand frequently installed in upscale communities in Frisco, Southlake, and Grapevine. Lennox 5 ton evaporator coil replacement in DFW typically runs $2,500–$4,500 installed, making it one of the most expensive brands for coil-only work.

Some older Lennox models use proprietary coil dimensions, which can increase lead times and cost if the air handler or plenum must be modified. When facing a high Lennox coil estimate on a 10–15-year-old system, it can make more financial sense to replace the entire system with a new high-SEER2 unit.

Goodman 5 Ton Evaporator Coil Replacement Cost

Goodman and Amana are very common across North Texas thanks to their availability and value pricing. A 5 ton Goodman evaporator coil replacement costs about $1,900–$3,400 installed, depending on whether it is a cased coil or uncased and how accessible the indoor unit is.

Goodman 5 ton cased coils are generally easier to source and install, keeping labor costs down compared to some premium brands. A full 5 ton Goodman system replacement may sometimes be only a few thousand dollars more than a coil-only repair-especially when factoring in rebates, financing, and new warranties.

Rheem 5 Ton Evaporator Coil Replacement Cost

Rheem and Ruud are mid-range brands often found in older Plano, Garland, and Mesquite homes and light commercial spaces. A 5 ton Rheem or Ruud evaporator coil replacement in DFW costs approximately $2,000–$3,600 installed.

The coil type (cased A-coil vs. slab) and refrigerant (R-22 vs. R-410A) affect the final cost and whether replacement parts are still available. When parts availability is limited or the refrigeration system uses obsolete refrigerant, a full system upgrade is often the better path. The refrigerant inside absorbs heat from the indoor air, and if the system can’t hold a charge because of an aging coil, no amount of recharging will solve the problem.

Under Warranty vs Out-of-Warranty Coil Replacement Costs

Warranty status is one of the biggest factors in any hvac coil replacement cost, especially for 5 ton systems. Most AC coils have a 5- to 10-year warranty from the manufacturer. That warranty typically covers parts but not labor costs, refrigerant, or installation materials.

When the evaporator coil covered under warranty needs replacement, you typically pay only for labor and materials. In DFW, that under-warranty average cost range runs $1,500–$2,300 for a 5 ton coil. The average cost for evaporator coil replacement under warranty can drop as low as $1,350 when the part is fully covered and access is straightforward. Replacement costs can be $400 to $1,000 under warranty for smaller systems, though 5 ton units land higher due to refrigerant volume and labor. Warranty coverage can reduce replacement costs by 40% to 60%-replacement costs are 40% to 60% less if under warranty compared to paying full price.

Out-of-warranty jobs include the full coil price, labor, and refrigerant, pushing the typical range to $2,000–$3,800 or more for premium brands. Labor warranties can extend coverage up to 5–10 years on new system installations, which is one reason a full system replacement with a 5-year labor and 10-year parts warranty from HVAC Services Pro can dramatically reduce future repair cost exposure.

Repair vs Replace Your Air Conditioner

For a large 5 ton system, the decision between coil-only repair and a full system replacement has major long-term cost and comfort implications. Here are straightforward decision guidelines:

• Consider coil replacement if the system is under 8–10 years old, properly sized, uses R-410A or newer refrigerant, and is otherwise reliable.
• Consider full system replacement if the entire system is over 10 years old, uses R-22 refrigerant, or has a history of expensive repairs. Older systems may not be cost-effective to service compared to replacement.

The standard rule of thumb: repair if costs are less than 30% of replacement. If the coil repair cost exceeds 30–40% of the price of a new air conditioner system, replacement usually wins. Consider replacing if repair costs exceed $5,000-at that level, you are close to the entry point for a brand-new high-efficiency system.

A full 5 ton central air conditioner or heat pump replacement in DFW runs $10,000–$18,000 installed and delivers higher SEER2 efficiency, lower electric bills, and new warranties. HVAC Services Pro offers 5-year labor and 10-year parts warranties on qualifying installs, plus financing options. Compare your options using our HVAC installation cost calculator or review AC repair cost in DFW and our detailed 2026 AC repair cost guide for Dallas–Fort Worth homes for additional context.

How Long Does A New Evaporator Coil Last?

Evaporator coils typically last 10 to 15 years under normal North Texas conditions. Replacing coils can extend system life by 5 to 10 years, making a new coil a worthwhile investment when the rest of the hvac system is in good shape, especially when compared to major repairs like AC compressor replacement cost in DFW.

The coil’s lifespan depends on refrigerant type, coil material (all-aluminum vs. copper), indoor air quality, and proper maintenance habits like regular filter changes and coil cleaning. With annual tune-ups and good filtration, some coils perform well for 15–20 years, but leaks often appear sooner in attic installations where temperature swings and humidity stress the metal. Professional hvac technicians recommend biannual maintenance for 5 ton systems that work hard through Dallas summers, and many homeowners rely on air conditioning repair services in Dallas to keep older systems running efficiently.

Frequently Asked Questions

These ac evaporator coil FAQs address practical concerns DFW homeowners face beyond the main cost discussion.

How long does it take to replace a 5 ton evaporator coil?

A straightforward 5 ton coil replacement in an accessible closet or garage typically takes 3–5 hours. Attic and crawlspace units-common across DFW homes in Plano, Garland, Irving, and Lewisville-can take 5–8 hours or more. This includes refrigerant recovery, brazing, vacuum testing, and startup. Emergency same-day replacements may be available during peak summer, though scheduling flexibility can sometimes reduce your total cost. The blower fan inside the air handler must be removed and reinstalled during the process, which adds time in tight configurations. Homeowners in suburbs like Plano often coordinate coil work with broader HVAC services in Plano, TX to handle other maintenance tasks at the same visit. When warm air passes over a properly installed new coil, the refrigerant circulates through the tubing and the blower fan pushes cooled air through your duct system to reach a straight horizontal line on your thermostat’s temperature graph.

Can you replace just the evaporator coil without replacing the condenser?

Yes, you can often replace an evaporator coil without replacing the outdoor unit, as long as the new coil matches the condenser’s tonnage, refrigerant type, and SEER2 rating. Mismatched components reduce efficiency, shorten equipment life, and may void manufacturer warranties. A qualified hvac technician from hvac companies with experience repairing air conditioners can verify compatibility before ordering parts. The evaporator coil located inside the air handler or above the furnace must work in concert with the outdoor condenser for the refrigeration system to function properly, whether you are planning a future 3 ton air conditioner unit replacement in DFW or a larger system upgrade.

Will my home be without cooling during coil replacement?

The ac unit must be fully shut off during the coil replacement process, including refrigerant work and vacuum testing. Your home will be without cooling for several hours-typically the full duration of the job. We recommend scheduling morning appointments during DFW summer months so cooling is restored before afternoon heat peaks. HVAC Services Pro works efficiently to minimize downtime and get your system running, and our average AC repair cost guide for Fort Worth homeowners explains how timing and urgency can affect what you pay for emergency visits.

Are there financing options for 5 ton coil or system replacement?

Many DFW hvac companies, including HVAC Services Pro, offer financing for large repairs and full system replacements, subject to credit approval. Financing can spread the cost of a $2,000–$4,000 coil replacement or a $10,000–$18,000 entire system install over manageable monthly payments, making a major repair or upgrade accessible without draining savings, whether you’re planning a 4 ton AC replacement for your home or a larger 5 ton system. Security verification and security service checks during the application are standard. Verification successful approvals typically happen quickly-check other service provider websites and service provider websites for comparison, but our process is designed to be fast and transparent, without interference from malicious bots or unnecessary delays.

How do I know what size (tonnage) AC I have?

Check your outdoor unit’s nameplate or model number. Five ton systems typically show “60” somewhere in the model code, representing 60,000 BTU of cooling capacity. The data tag on the air handler or furnace also lists this information. If you are unsure of your ac unit size, call HVAC Services Pro for a quick over-the-phone or on-site verification and sizing check before investing in a major coil repair.

Get A Free Coil Replacement Quote

If you are a homeowner in Dallas, Plano, Garland, McKinney, Frisco, Irving, Arlington, Lewisville, Grapevine, Richardson, or anywhere in North Texas, HVAC Services Pro is here to help with transparent, no-pressure pricing on your 5 ton evaporator coil replacement.

We provide free estimates for:

• 5 ton evaporator coil replacement (all major brands)
• Full 4–5 ton central AC or heat pump system replacement
• Gas furnace and coil upgrades with indoor air quality add-ons

Every qualifying new system install comes with a 5-year labor warranty and 10-year parts warranty, plus high-efficiency Trane and RunTru options designed for North Texas conditions. Emergency replacement service is available across the DFW area.