AC installation in Garland, TX

What is different in Garland

Most AC advice for Dallas–Fort Worth assumes an Oncor-area home of average age. Garland breaks both assumptions. The electric utility is different, which changes where any rebate would come from, and the housing is older, which changes what a replacement is likely to uncover. This page covers what those two facts mean for planning a job.

This site is an independent publisher. It does not install equipment and does not claim contractor coverage in Garland.

GP&L and rebates

Garland Power & Light (GP&L), the city’s own electric utility, serves most Garland homes. That matters because utility efficiency programs are run by the utility: an Oncor program does not reach a GP&L customer.

For comparison, across most of DFW: 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. If your bill names GP&L, that Oncor route is generally not yours. Some addresses inside or near Garland may be served by another provider, so check the name on your electric bill before anything else.

Gas is a separate utility and a separate question. Atmos Energy’s Mid-Tex appliance rebate program, running 1 July 2026 to 30 June 2027 for its Mid-Tex residential customers, pays $300 for an ENERGY STAR gas furnace rated 90% AFUE or higher and $350 for 95% AFUE or higher. Applications close 12 months after purchase or installation. That applies only if Atmos serves your address and you are replacing a gas furnace along with the AC.

The City's "Identify My Electric Provider" page could not be opened on 2026-10-20; the GP&L service statement is marked verify in the sources.

What the GP&L program required

The ended program is still useful as a guide to what GP&L asked for, in case a new round opens. The Garland economic development page we opened on 2026-10-20 stated:

• Efficiency: at least 16.0 SEER and 12.0 EER, or 15.3 SEER2 under the 2023 ratings.
• Scope: a total system change-out, not just the outdoor unit.
• End: 30 September 2026 or when funds ran out, whichever came first.

The page did not list rebate amounts, who applies or what documents are needed, so none are published here. Compare those thresholds with the federal floor: 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. The program asked for noticeably more than the minimum.

If you are getting quotes now, ask each contractor for the SEER2 and EER2 ratings and the AHRI certificate for the exact combination. That way, if GP&L opens a new program, you already know whether the quoted system could qualify.

Older homes

Garland’s median home was built in 1978, the oldest of the 13 DFW cities we checked. A house of that age is more likely to have original ducts, a smaller electrical panel, or an R-22 system.

• Refrigerant: Production and import of virgin HCFC-22 (R-22) ended on 1 January 2020; existing R-22 systems may still be serviced with recovered or stockpiled refrigerant.
• Ducts: sealing or repair is published in Dallas at $1,300–$8,000.
• Electrical: a 100 A to 200 A panel upgrade is published nationally at $1,800–$3,500.

A median is a midpoint, not a rule: half of Garland homes are newer than 1978 and half older. The point is that a replacement in Garland is more likely than in a newer suburb to replace a system that has itself been replaced before, on ducts that may be original.

On refrigerant: 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. A new outdoor unit on new refrigerant generally needs a matching indoor coil, which is one reason older split systems are usually replaced as a set. See AC replacement and AC installation in older Dallas homes.

A 1978 Garland house, step by step

A hypothetical walk-through, not a description of any real house or quote. Say a 1978 single-story ranch in Garland has an aging R-22 split system, ducts in the attic and the original electrical panel. The AC has had refrigerant added twice.

1. Check the utility. The bill names GP&L, so Oncor incentives are out. Ask GP&L whether any program is open.
2. Get the size worked out, not copied from the old unit. Insulation and windows may have changed since 1978.
3. Look at the ducts. ENERGY STAR estimates that about 20 to 30 percent of the air moving through a typical duct system is lost to leaks, holes and poorly connected ducts. Original attic ducts are worth inspecting and, ideally, leak-testing while the system is out.
4. Check the panel. Ask whether the panel has room and capacity for the new equipment's circuit.
5. Price it in pieces. A 3-ton AC on existing ducts (DFW range $5,500–$16,500), plus duct sealing if needed (Dallas $1,300–$8,000), plus a panel upgrade if needed (national $1,800–$3,500). Each line should be separate on the quote.
6. Confirm the permit and the contractor's Garland registration before signing.

Sizing an older house

Older houses are where rule-of-thumb sizing goes wrong most often. The original system may have been sized for single-pane windows and thin attic insulation; if those have been upgraded, the house now needs less. If the house has an addition, it may need more, or a separate system for the new space.

DFW averages 20 days a year at or above 100 °F on the 1991–2020 normals, two more than on the 1981–2010 normals. Ask the contractor what load calculation they use and what it found, room by room. Our AC sizing guide for Dallas homes and the sizing preparation tool show what to have ready.

System choices

Compare the options in the system comparison tool, or read heat pump installation and ductless mini-split installation.

Permit and registration

Garland requires a permit to replace an air-conditioning unit, and contractors register with Building Inspection with a copy of their state HVAC license. The Texas Department of Licensing and Regulation (TDLR) licenses air conditioning and refrigeration (ACR) contractors, and ACR companies must employ a licensed ACR contractor at each permanent location.

Garland's permit page could not be opened on 2026-10-20; the wording comes from its search listing. Confirm with Garland Building Inspection.

In practice this means two separate checks: the state license, which you can look up yourself with the TDLR license check, and city registration, which you confirm with Garland Building Inspection. The permit should be in the contractor's name, and the job should end with a city inspection. Keep the permit number with your warranty papers.

For how Garland's office fits with the others in the area, see DFW AC installation permits.

Costs

No Garland-specific prices are published that we could find, so the Dallas–Fort Worth ranges apply. Published third-party ranges, not this site's prices:

• 3-ton central AC on existing ducts: $5,500–$16,500 (DFW)
• Ducted heat pump, all sizes: $6,500–$14,500 (DFW)
• Single-zone mini-split: $2,000–$5,200 (Dallas)
• Duct sealing or repair, added to an AC job: $1,300–$8,000 (Dallas)
• Panel upgrade, 100 A to 200 A: $1,800–$3,500 (national)

Do not subtract a GP&L rebate from any of these: the published program has ended. The full cost guide lists every source and date.

Timing a Garland job

Average first 100 °F day: July 1. Average last: August 27. A system that fails in July is replaced under pressure, with less time to compare quotes, check ducts and confirm the permit. In an older house, where a replacement can uncover duct or panel work, that time matters more.

If your system is aging and has needed refrigerant more than once, getting quotes in spring or fall leaves room to price the ducts and panel properly and to ask GP&L about any new program. Our repair versus replacement guide helps decide whether now is the time.

Allow for the permit and the city inspection in the schedule, and ask the contractor how long the installation itself will take for your scope.

Before you sign

• Electric provider confirmed from your bill.
• Any current GP&L program confirmed directly with GP&L, in writing.
• Load calculation done and shared.
• Ducts inspected; sealing or replacement priced as its own line.
• Panel capacity checked.
• Refrigerant of the new system named on the quote.
• SEER2 rating and AHRI certificate number on the quote.
• TDLR license number on the proposal, and Garland registration confirmed.
• Permit included, with the city inspection.
• Parts and labor warranty terms in writing. See AC installation warranties.

What to ask a Garland contractor

• Are you registered with Garland Building Inspection, and will you pull the permit?
• Is there any current GP&L incentive for this equipment?
• Do my ducts and panel need work for the new system?
• What refrigerant does my current system use, and does the indoor coil need replacing?
• How did you size the new system for this house?

Put the answers side by side in the quote comparison tool.

Sources

• Garland Power & Light (GP&L) (retrieved 2026-10-20) — verify before relying on it
• GP&L’s central air conditioning and heat pump program required at least 15.3 SEE (retrieved 2026-10-20)
• Garland’s median home was built in 1978 (retrieved 2026-10-20)
• Garland requires a permit to replace an air-conditioning unit (retrieved 2026-10-20) — verify before relying on it
• US Census Bureau ACS 2024 5-year, table B25035 (median year structure built), via Census Reporter (retrieved 2026-10-20)
• US EPA, GreenChill regulatory context (archived page) (retrieved 2026-10-20) — verify before relying on it
• NAHB summary of the EPA final rule (May 2026); EPA AIM Act Technology Transitions program (retrieved 2026-09-23)
• AHRI, "2023 Energy Efficiency Standards"; DOE regional standards (retrieved 2026-09-23)
• ENERGY STAR, "Duct Sealing" (retrieved 2026-10-20)
• NWS Fort Worth, "1991–2020 Normals" (retrieved 2026-10-20)
• NWS Fort Worth, "DFW 100° Info" (retrieved 2026-09-23)
• Oncor "Take A Load Off Texas" (retrieved 2026-09-23) — verify before relying on it
• Atmos Energy, Mid-Tex Appliance Rebate Program (retrieved 2026-10-20)
• Budget Heating, AC replacement cost in Dallas (Dallas, page dated undated) (retrieved 2026-10-20)
• Voltflow, electrical panel upgrade cost 2026 (National, page dated 2026-04) (retrieved 2026-10-20)
• Filterbuy, Dallas mini-split installation (an equipment seller) (Dallas, page dated 2026-08-07) (retrieved 2026-10-20)
• TDLR, Air Conditioning and Refrigeration (retrieved 2026-10-20)

Questions

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