Trane XL18i Heat Pump
$8,900 to $11,900
(price includes indoor coil/install)
Staging: Two-Stage
Efficiency: up to 18.00 SEER
Heat Rating: up to 9.60 HSPF
Sound Rating: low as 73 dB
Expert Install Included
Our price includes equipment, materials, and professional installation of your new system by our expert install team.
Save with Watkins Discounts
Get up to $1,000 in savings on instant rebates from Watkins specials, and factory rebates.
Product Downloads
Get everything you need for your new Trane HVAC system here! Download the product specifications, owner's manual, product brochure, and Trane manufacturer warranty details to ensure you're fully informed and your system is fully protected:
Product Information
| Brand | Model | Model Number | Refrigerant | Size | Height | Width | Depth | Sound Rating |
|---|---|---|---|---|---|---|---|---|
| Trane | XL18i | 4TWX8024A1000 | R-410a | 2 ton | 47 | 37 | 34 | 72 |
| Trane | XL18i | 4TWX8036C1000 | R-410a | 3 ton | 51 | 37 | 34 | 72 |
| Trane | XL18i | 4TWX8048A1000 | R-410a | 4 ton | 51 | 37 | 38 | 72 |
| Trane | XL18i | 4TWX8060A1000 | R-410a | 5 ton | 51 | 37 | 34 | 74 |
Overview
The Trane XL18i heat pump offers flexible comfort with two-stage cooling and heating.
The XL18i has been replaced by the Trane XL17i model due to the Department of Energy’s shift from SEER to SEER2 in 2023. The features and efficiency of the XL17i are largely identical, with minor improvements, and it is rated using the DOE’s new method which yields a lower SEER2 rating even though the performance is unchanged. Click here to read more about the change from SEER to SEER2.
Again in 2025, the Trane XL17i was updated to use the new refrigerant, R-454b. At the same time, they upgraded the compressor from a 2 stage scroll to a multi-speed inverter-driven compressor.
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