If you want a Trane heat pump without the premium dealer markup, you’ll want to look at the Oxbox by Trane lineup available here.
Oxbox is Trane’s factory-built value line, built with the same engineering, so you still get dependable year-round comfort for less.
| Feature | 1.5 Ton System | 2 Ton System | 3 Ton System | 3.5 Ton System | 4 Ton Condenser |
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| SEER2 Rating | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 |
| Cooling & Heating Capacity | 18,000 BTU | 24,000 BTU | 36,000 BTU | 42,000 BTU | 48,000 BTU |
| System Type | Complete System (Condenser + Air Handler) | Complete System + TXV Kit | Complete System (Condenser + Air Handler) | Complete System (Condenser + Air Handler) | Condenser Only |
| Refrigerant | R-454B | R-454B | R-454B | R-454B | R-454B |
| Air Handler | Matched Air Handler Included | 2.5 Ton Multi-Position Air Handler | Multi-Position Air Handler | Matched PSC Air Handler | Not Included |
| Dimensions (L x W x H) | 28″ x 28″ x 25″ | 28″ x 28″ x 25″ | 28″ x 28″ x 25″ | 28″ x 28″ x 33″ | 28″ x 28″ x 33″ |
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| Product | Image | Feature 1 | Feature 2 | Feature 3 | Feature 4 | Feature 5 | Feature 6 | Buy Now |
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| 1.5 Ton System | [Image loads via plugin] | 14.3 SEER2 | 18,000 BTU | Complete System | R-454B | Air Handler Included | 28″ x 28″ x 25″ | |
| 2 Ton System | |
14.3 SEER2 | 24,000 BTU | Complete System + TXV | R-454B | 2.5 Ton Air Handler | 28″ x 28″ x 25″ | |
| 3 Ton System | |
14.3 SEER2 | 36,000 BTU | Complete System | R-454B | Multi-Position Air Handler | 28″ x 28″ x 25″ | |
| 3.5 Ton System | |
14.3 SEER2 | 42,000 BTU | Complete System | R-454B | PSC Air Handler | 28″ x 28″ x 33″ | |
| 4 Ton Condenser | [Image loads via plugin] | 14.3 SEER2 | 48,000 BTU | Condenser Only | R-454B | Not Included | 28″ x 28″ x 33″ | |
1. 1.5 Ton Heat Pump System, 14.3 SEER2 (Oxbox by Trane)
If you’re heating and cooling a smaller home, apartment, or addition, this 1.5 ton system is sized right and priced to match.
It includes both the heat pump condenser and a matched air handler, so you get a genuinely complete solution rather than mismatched parts.
Backed by Trane engineering, it’s built for long-lasting reliability at an accessible price point.
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Features
- 14.3 SEER2, 18,000 BTU cooling and heating capacity
- Complete system with matched air handler included
- R-454B refrigerant, current efficiency standards
- Backed by Trane engineering and design
Pros
- Right-sized for smaller homes, no wasted capacity
- Complete matched system removes compatibility guesswork
- Trane-backed reliability at a more accessible price
Cons
- 18,000 BTU won’t be enough for larger homes
- Single-stage operation is less nuanced than two-stage systems
If you’re replacing an aging system in a smaller home and want Trane-backed reliability without paying for capacity you don’t need, this system is a genuinely solid fit.
Check its current price on Amazon
2. 2 Ton Heat Pump System with Air Handler, 14.3 SEER2 (Oxbox by Trane)
This 2 ton system steps up the capacity while keeping everything genuinely complete: condenser, a 2.5 ton multi-position air handler, and a factory-approved TXV kit.
That multi-position air handler means it adapts to upflow, downflow, or horizontal installation, fitting whatever layout your home needs.
R-454B refrigerant keeps it aligned with current efficiency standards.
Features
- 14.3 SEER2, 24,000 BTU cooling and heating capacity
- 2.5 ton multi-position air handler included
- Factory-approved R-454B TXV kit included
- Supports upflow, downflow, and horizontal installation
Pros
- TXV kit included, nothing extra to source
- Multi-position flexibility fits varied duct layouts
- Genuinely complete all-electric heating and cooling package
Cons
- 24,000 BTU suits smaller to mid-size homes only
- Single-stage operation is less nuanced than two-stage systems
If your installation calls for flexibility in mounting orientation plus a genuinely complete parts kit, this 2 ton system covers it all in one purchase.
Check its current price on Amazon
3. 3 Ton Heat Pump System, 36,000 BTU, 14.3 SEER2 (Oxbox by Trane)
This 3 ton system is sized for the majority of mid-size homes, pairing the heat pump condenser with a multi-position air handler for genuinely flexible installation.
At 36,000 BTU, it covers both cooling and heating without stepping up to a larger, pricier system.
It’s a dependable, no-surprises choice for a standard HVAC replacement.
Features
- 14.3 SEER2, 36,000 BTU cooling and heating capacity
- Multi-position air handler included
- R-454B refrigerant, current efficiency standards
- Complete system, nothing extra to source
Pros
- Sized right for most mid-size homes
- Multi-position air handler fits varied duct layouts
- Dependable Trane-backed build quality
Cons
- Single-stage operation is less nuanced than two-stage systems
- Larger homes may need to step up to the 3.5 or 4 ton options
If you want a straightforward, genuinely complete whole-home replacement without piecing together parts, this 3 ton system is a dependable middle-of-the-road pick.
Check its current price on Amazon
4. 3.5 Ton Heat Pump System, 42,000 BTU, 14.3 SEER2 (Oxbox by Trane)
If your home needs a bit more capacity than a standard 3 ton system, this 3.5 ton package steps up to 42,000 BTU while keeping everything genuinely matched.
It pairs the condenser with a matched PSC air handler for consistent, dependable airflow.
Built with R-454B refrigerant, it’s designed for long-lasting performance and energy efficiency.
Features
- 14.3 SEER2, 42,000 BTU cooling and heating capacity
- Matched multi-position PSC air handler included
- R-454B refrigerant, current efficiency standards
- Trusted Trane-backed engineering and construction
Pros
- Extra capacity over the standard 3 ton option
- Matched air handler removes compatibility guesswork
- Suited to larger, multi-level homes
Cons
- More capacity than smaller homes actually need
- Single-stage operation is less nuanced than two-stage systems
If a standard 3 ton system falls just short of your home’s needs, this 3.5 ton package gives you the extra headroom without jumping all the way to 4 tons.
Check its current price on Amazon
5. 4 Ton Heat Pump Condenser, 14.3 SEER2 R-454B (Oxbox by Trane)
This is the outdoor condenser on its own, which is exactly what you want if your existing air handler is still in good working order.
At 48,000 BTU, it delivers the most capacity on this list for larger homes, with convertible airflow orientation for flexible installation.
It’s built around the same R-454B refrigerant and 14.3 SEER2 efficiency as the complete systems above.
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Features
- 14.3 SEER2, 48,000 BTU condenser, no air handler included
- Convertible airflow orientation for flexible installation
- R-454B refrigerant, meets 2025 energy standards
- 182 lbs, built for durable outdoor installation
Pros
- Ideal for replacing just a failed condenser
- Largest capacity on this list for bigger homes
- Saves money when your existing air handler still works
Cons
- You’ll need a compatible existing air handler
- Not a fit if your whole system needs replacing
If your indoor air handler is still working fine and you just need more outdoor capacity, this 4 ton condenser saves you from paying for parts you don’t need.
Check its current price on Amazon
Buying Guide
Match tonnage to your home’s square footage, typically around 500 to 600 sq ft per ton. Check whether the listing includes a matched air handler or just the condenser. R-454B refrigerant meets current environmental standards across this lineup. Always hire a licensed HVAC installer, and register your warranty promptly after installation.
Tips For Choosing And Installing Your Heat Pump
Have an HVAC professional run a proper load calculation rather than just matching your old system’s tonnage.
Check whether the air handler’s mounting orientation matches your home’s layout before buying a split system.
If you’re only replacing a failed condenser, confirm your existing air handler is compatible before ordering a condenser-only unit.
Register your warranty within the manufacturer’s window to keep full parts coverage.
Schedule a seasonal tune-up every year to protect efficiency and extend the system’s lifespan.
FAQ
Is Oxbox the same as Trane?
Oxbox is Trane’s factory-built value brand, using the same manufacturing and engineering standards as Trane-branded equipment at a more accessible price point.
What size heat pump do I need for my home?
A common rule of thumb is one ton of capacity per 500 to 600 square feet, though insulation, climate, and ceiling height all affect the actual number.
Can I replace just the condenser instead of the whole system?
Yes, as long as your existing air handler or coil is compatible and still in good working condition.
What is R-454B refrigerant?
R-454B is a newer, more environmentally friendly refrigerant used across current HVAC equipment to meet updated efficiency and environmental standards.
Can I install a Trane or Oxbox heat pump myself?
No, these systems require refrigerant handling and electrical work that should always be done by a licensed HVAC professional.
Conclusion
Any of these five Oxbox by Trane heat pumps will deliver dependable, Trane-backed comfort for your home.
If you have a smaller home, the 1.5 or 2 ton systems are sized right without excess cost.
If you need a genuinely complete whole-home replacement, the 3 or 3.5 ton systems cover most mid-size to larger homes.
And if you’re only replacing a condenser, the 4 ton unit gives you the most capacity without paying for parts you don’t need.