29,000 BTU heat pump

MRCOOL 29,000 BTU Wall-Mount

Name: MRCOOL 29,000 BTU Wall-Mount
Brand: MRCOOL

Model #: O-ES-24-HP-C-230C-O1 / O-24-HP-WMAH-230C-O

Every spec on this page comes from an official certification record or a cited manufacturer document. The source is linked next to each value.

MRCOOLOMini-split heat pump

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Decision guide

What the published numbers mean before you compare every spec.

29,000 BTU is closest to ENERGY STAR’s 1500–2000 sq. ft. room-size row.

At 5°F, certified output is 24,200 BTU/h — 83% of its 47°F rating.

The cited fields do not confirm a pre-charged line set or DIY-line designation for this model.

208/230V equipment; confirm the dedicated circuit and disconnect requirements with an electrician.

HSPF2 13.5 is above the 11.3 average among 16 models in the same rounded capacity class.

Your room is near 1500–2000 sq. ft. under the ENERGY STAR starting-point assumptions, and a load calculation agrees.

Your electrical plan does not yet account for 208/230V equipment, or your room falls outside the sizing range above.

Room guidance is a screening estimate for standard conditions. Check your room inputs; use Manual J for final sizing.

Outdoor model number	O-ES-24-HP-C-230C-O1Source: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
Indoor model number	O-24-HP-WMAH-230C-OSource: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
AHRI reference number	217666290Source: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
Series	OSource: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
Heating capacity at 47F	29,000 BTU/hSource: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
Heating capacity at 17F	22,200 BTU/hSource: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
Heating capacity at 5F	24,200 BTU/hSource: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
SEER2	21Source: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
EER2	13Source: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
HSPF2	13.5Source: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
Voltage	208/230VSource: Manufacturer spec ↗ · 2026-07-16
Minimum circuit ampacity	24.9 ASource: Manufacturer spec ↗ · 2026-07-16
Maximum breaker / fuse	25 ASource: Manufacturer spec ↗ · 2026-07-16

Values marked ENERGY STAR come from the certification dataset; values marked Manufacturer spec come from the linked product documents.

The sources we cite do not publish these values for this model, so we leave them blank rather than guess.

Line set length rangePre-charged line setBrand DIY line

Room-size guidance is a starting point, not a load calculation. Confirm sizing and installation requirements with a qualified contractor.