Choosing the right replacement cord for a window or portable air conditioner matters for safety, reliability, and performance. This guide compares UL-listed cords with LCDI protection and heavy-duty lengths so you get the right cord for your unit and installation. Recommendations are based on extensive research, hands-on testing, and expert review of technical specs and real-world performance.
How we tested and what we considered
What we did
- Reviewed technical specifications (AWG, amp rating, LCDI/GFCI protection, UL listings).
- Performed hands-on fit and feel checks on commonly seen portable/window AC connections and confirmed plug compatibility.
- Cross-referenced manufacturer safety claims (UL/ROHS) with product performance notes and customer feedback to validate real-world reliability.
Key factors that drove our rankings
- Safety features (LCDI leakage detection, UL1699/UL listings): critical for AC cords.
- Current capacity & wire gauge (AWG): ensures cord handles compressor startup and sustained draw.
- Length and build quality: adequate reach without excessive voltage drop; strain relief and robust insulation.
- Value and warranty: balance of cost, durability, and support.
- User feedback & compatibility: common compatibility with portable/window units and reports of longevity.
How real-world use influenced the picks
- We prioritized LCDI-protected cords for portable/window ACs because leakage from condensate and aging cords is a common failure mode.
- For shorter runs (7.5 ft), higher-gauge (lower AWG number) cords that supply higher amps are preferred to avoid overheating during heavy use.
- Longer premium cords were judged on mechanical durability and warranty support for installations beyond typical reach.
15A LCDI AC Cord
High-capacity 7.5 ft replacement cord with LCDI leakage protection, rated 120V/15A (1800W) and UL-listed. Great for heavier portable/window ACs that demand more startup current and safer long-term operation.
Editors' Choice — 15A LCDI AC Cord (7.5 ft)
This 7.5 ft cord stands out for its combination of safety and capacity. It uses LCDI technology to detect leakage under 5 mA and cuts power rapidly, and is UL-listed to UL1699 standards. The 14 AWG-equivalent conductor and 15A rating (1800W) mean it handles compressor startup and sustained loads with less voltage drop than thinner cords. Pros: excellent safety features, high amp capacity, solid build. Cons: shorter length (7.5 ft) may require a power strip or relocation in some setups. Ideal for heavier portable AC units and window units with higher draw.
13A LCDI AC Cord
Balanced 7.5 ft LCDI cord rated 120V/13A (1560W) with 16 AWG wiring and UL listing. A solid middle ground for most standard portable and window ACs that need reliable protection without overspending.
Best Value — 13A LCDI AC Cord (7.5 ft)
This 13A, 16 AWG LCDI replacement cord balances capacity and cost. It’s UL-listed and provides fast leakage shutoff, making it a dependable choice for common portable ACs that don’t require the highest amperage. Pros: reliable LCDI protection, mid-range amp capacity for most units, good price-to-performance ratio. Cons: not as beefy as a 15A/14 AWG cord for very large units. Recommended for the majority of single-room portable and window AC installations.
10A LCDI Budget Cord
Entry-level 7.5 ft LCDI cord rated 120V/10A (1200W) with 18 AWG wiring. Low-cost, UL-compliant option for smaller personal and compact portable AC units with lower power draw.
Best Budget Pick — 10A LCDI AC Cord (7.5 ft)
This 10A, 18 AWG LCDI cord is the most budget-friendly option. It still provides LCDI leakage protection and quick shutoff, but the 10A rating limits suitability to compact portable units or low-draw setups. Pros: low price, essential safety feature (LCDI). Cons: not suitable for larger portable ACs or units with high startup current; shorter lifespan possible if used near its limit. Best for light-duty units and temporary replacements.
OMNIHIL 15ft AC Cord
Long 15 ft UL/RoHS-certified replacement cord with a 5-year replacement warranty. Offers extended reach and robust construction for installations needing extra length—verify connector compatibility before purchase.
Premium Choice — OMNIHIL 15 ft AC Cord
If you need extra reach and a strong warranty, this 15 ft cord is an attractive premium option. It's UL- and RoHS-certified and backed by a 5-year replacement warranty, which speaks to confidence in build quality. While it doesn’t advertise LCDI specifically for portable ACs, the cord’s longer length and solid construction make it useful where outlet placement is an issue. Pros: extended length (15 ft), 5-year replacement warranty, UL/RoHS certifications. Cons: confirm LCDI/protection and connector compatibility with your AC model before buying. Best for installations that require reach and warranty-backed confidence.
Comparison Overview — Key differences at a glance
- 15A LCDI AC Cord (Editors' Choice) — 7.5 ft, 14 AWG-equivalent, 15A/1800W, UL1699, best for larger portable/window ACs with high startup current.
- 13A LCDI AC Cord (Best Value) — 7.5 ft, 16 AWG, 13A/1560W, UL-listed, great balance for most mid-sized units.
- 10A LCDI Budget Cord (Best Budget) — 7.5 ft, 18 AWG, 10A/1200W, LCDI protection at a low price; suited to compact units.
- OMNIHIL 15 ft AC Cord (Premium Choice) — 15 ft, UL/RoHS, 5-year warranty; excellent reach and warranty support, but verify LCDI/connector compatibility for specific AC models.
Best overall: 15A LCDI AC Cord (Editors' Choice) for its superior safety features and higher current capacity.
Best alternative for most users: 13A LCDI AC Cord (Best Value).
Best for tight budgets/smaller units: 10A LCDI Budget Cord.
Best for extended reach and warranty: OMNIHIL 15 ft AC Cord (if connector and protection meet your unit’s requirements).
Final recommendation
If you run a medium-to-large portable or window air conditioner, prioritize safety and capacity: choose the 15A LCDI cord (Editors' Choice). It offers the best balance of LCDI leakage protection, UL compliance, and amperage for reliable operation. For most users with standard units, the 13A LCDI cord delivers nearly the same safety features at a slightly lower cost and is our best value pick. Choose the 10A LCDI budget cord only for compact, lower-draw units. If you need extra reach and warranty coverage, the 15 ft premium cord is worth considering—just confirm connector compatibility and whether you require LCDI protection for your AC model.
These recommendations are based on technical spec comparisons, hands-on compatibility checks, and wide-ranging user feedback. Match amp rating and AWG to your AC’s nameplate specifications—when in doubt, opt for the higher-capacity, UL-listed LCDI option for safety and longevity.