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Quick specs
Brand
Oxbox by Trane
Tonnage
4 Ton
SEER2
14.3
EER2
11.7
Compressor Type
Single-Stage Scroll
Voltage
208/230V, 1-Phase, 60Hz
Blower Motor
PSC
Condenser Fan Motor
ECM
Liquid Valve Size
3/8"
Suction Valve Size
7/8"
Refrigerant
R-454B
AHRI
215225181
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
4 Ton Oxbox by Trane 14.3 SEER2 R-454B Single Stage Air Conditioner Split System
10 Year Warranty on Parts·Heavy Duty Construction
$4,236.40
-
- Free shipping — most items ship by the next day
Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.
Secure payment
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4 Ton Oxbox by Trane 14.3 SEER2 R-454B Single Stage Air Conditioner Split System
Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.
Need help? (888) 292-0874
- Free shipping — most items ship by the next day
Secure payment
VISA MC AMEX DISC PayPal Affirm CHECK
In stock
In most items, small items ship same day. Complete systems ship next business day.
$4,236.40
-
Need help? (888) 292-0874
- Free shipping — most items ship by the next day
Secure payment
VISA MC AMEX DISC PayPal Affirm CHECK
Quick specs
Brand
Oxbox by Trane
Tonnage
4 Ton
SEER2
14.3
EER2
11.7
Compressor Type
Single-Stage Scroll
Voltage
208/230V, 1-Phase, 60Hz
Blower Motor
PSC
Condenser Fan Motor
ECM
Liquid Valve Size
3/8"
Suction Valve Size
7/8"
Refrigerant
R-454B
AHRI
215225181
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
Why Oxbox works well for homeowners
The Oxbox J5AC and J5AH is a matched split air system from Trane’s value brand. Both are set up for R-454B, the lower-impact refrigerant that already meets the 2025 EPA rules.
The outdoor J5AC is a no-frills condenser: scroll compressor, painted galvanized cabinet, and a louvered coil guard so the outdoor coil is not left wide open to weather and yard debris. It is built to run cooling duty day after day, not to look like a premium communicating system.
The indoor J5AH is the flexible half. It can go upflow, downflow, or sideways, which helps in closets, attics, and tight replacements. The coil is all-aluminum, so it stands up better to corrosion. The cabinet is sealed tight enough that cooled air is less likely to leak into the attic or closet. When service is needed, the blower slides out instead of forcing a full teardown.
A refrigerant sensor in the air handler can shut the outdoor unit down if a leak is detected. If the house needs extra heat in winter, electric heat strips can be added later.
This system is meant for homeowners who want a durable and simple cooling system without extra bells and whistles.
Key features
- 10 Year Warranty on Parts — Replacement for any part of this product which fails in normal use in accordance with the terms of the limited warranty.
- Heavy Duty Construction — Powder-painted galvanized steel, tested for salt-spray durability, steel coil guard & wire fan guard.
- PlusOne Refrigerant Detection System — Pauses outdoor unit if a refrigerant leak is detected.
- 100% Factory Run Tested — Fully assembled and run under real operational conditions before it leaves the factory.
Why homeowners choose NAW
Genuine OEM parts
Every part we sell is the real thing — authorized, factory-genuine, and backed by the full manufacturer warranty.
Easy online ordering
Find your part by model number, add to cart, and get it delivered to your door — no middleman, no markup.
30-day hassle-free returns
Ordered the wrong part? Send it back within 30 days.
Help when you need it
Not sure if this is the right part? Call us at (888) 292-0874 and we’ll help you find the correct replacement.
Condenser
Height 29-3/8 in
Width 28 in
Length 28 in
Weight 165 lb
Air Handler
Height 54-1/2 in
Width 22 in
Length 24 in
Weight 159 lb
Customer reviews
What buyers are saying
Verified reviews from customers who purchased this product.
5.0
6 verified reviews
TF
Teddy F
The 4 Ton Oxbox by Trane 14.3 SEER2 R-454B Single Stage Air Conditioner Split System truly exceeded expectations with its powerful performance and solid build quality. At such an excellent price, it’s amazing how well this unit cools and runs so efficiently—highly recommended.
PD
Paul D
The 4 Ton Oxbox by Trane 14.3 SEER2 R410A Single Stage Air Conditioner Split System blew me away with its incredible performance and unbeatable price! It cools my home effortlessly, providing consistent comfort while saving on energy bills—definitely a smart investment!
PE
Peter E
The 4 Ton Oxbox by Trane 14.3 SEER2 Air Conditioner Split System is a game-changer, providing robust cooling that instantly turned our home into a cool and refreshing space! Considering its reliable performance and high-quality build, the price was astonishingly low, making this system a fantastic investment for anyone seeking quality air conditioning at an excellent value.
JM
Jeremy M
I recently purchased the 4 Ton Oxbox by Trane 14.3 SEER2 R410A Single Stage Air Conditioner Split System, and I’m ecstatic about the unbeatable price, top-notch equipment, and stellar performance—it exceeded all my expectations!
T
Teddy
I recently purchased the 4 Ton Oxbox by Trane 14.3 SEER2 R410A Single Stage Air Conditioner Split System, and I’m blown away by its powerful cooling capabilities and the surprisingly reasonable price tag. This air conditioner split system not only delivers outstanding performance but also offers incredible value – a fantastic product that combines top-notch quality with affordability!
J
John
Absolutely blown away by the 4 Ton Oxbox by Trane 14.3 SEER2 R410A Single Stage Air Conditioner Split System! The price for such high-quality equipment was an unexpected find, and its single-stage performance has consistently kept my space refreshingly cool—truly remarkable value!
