Bosch Climate 5000 12,000 BTU vs Carrier Performance 38MARB 12,000 BTU
Quick take: The Bosch Climate 5000 12,000 BTU costs $1,150 less; the Carrier Performance 38MARB 12,000 BTU is the more efficient unit (23.6 SEER2).
| Spec | Bosch Climate 5000 12,000 BTU | Carrier Performance 38MARB 12,000 BTU |
|---|---|---|
| Price | $1,150 | $2,300 |
| Rating | — | — |
| Type | Single-Zone | Single-Zone |
| Capacity | 12k BTU | 12k BTU |
| Coverage | ~550 sq ft | ~550 sq ft |
| SEER2 (cooling) | 23.4 | 23.6 |
| HSPF2 (heating) | 9.5 | 11 |
| Low-Ambient Heating | to -13°F | to -22°F |
| Zones | Single zone | Single zone |
| Voltage | 230V | 230V |
| WiFi Control | Optional / none | Optional / none |
| Install | Professional installation with standard flare fittings and a 230V circuit; sold through Home Depot, Lowe's, and HVAC distributors, and Bosch's warranty terms favor accredited installers. | Dealer-installed in most cases since Carrier sells through its distributor network; requires a 208/230V circuit, and the outdoor unit ships with factory base-pan and crankcase heaters for cold-climate mounting. |
| Warranty | 10-year compressor and 5-year parts limited warranty with product registration | 10-year parts and compressor limited warranty with timely registration (5 years unregistered) |
Pros & cons
Bosch Climate 5000 12,000 BTU
- ✓Excellent 23.4 SEER2 / 9.5 HSPF2 efficiency for the price class
- ✓Widely available at Home Depot, Lowe's, and HVAC supply houses
- ✓Intelligent Eye occupancy sensor and inverter compressor trim energy use
- ✓Bosch dealer network is far larger than typical value brands
- ✗It's rebadged Midea hardware, so you pay a brand premium over the identical Midea version
- ✗Owners report aggressive defrost cycling near 32F that interrupts heating
- ✗Not a hyper-heat unit — output falls off well before its -13F rated floor
- ✗Wi-Fi control requires an optional dongle rather than being built in
- ✗Best warranty terms require registration and Bosch-accredited installation
Carrier Performance 38MARB 12,000 BTU
- ✓Maintains its full rated 12,000 BTU heating output at 5F per Carrier's submittal data
- ✓Rated heating operation all the way down to -22F
- ✓Strong 23.6 SEER2 efficiency with a 14 EER for hot afternoons
- ✓Factory-installed base-pan and crankcase heaters, not optional add-ons
- ✓Huge nationwide dealer and parts network compared to import brands
- ✓Energy Star certified and AHRI-listed pairing
- ✗Built by the Carrier-Midea joint venture, so you pay a big premium over identical Midea hardware
- ✗Dealer-channel pricing makes total installed cost hard to compare shop
- ✗Wi-Fi control requires an optional adapter instead of coming built in
- ✗Still on R-410A while Carrier's newest ductless line has moved to R-454B
- ✗Warranty drops to 5 years if you miss the registration window