12,500 BTU heat pump

PerfectAire 12,500 BTU Wall-Mount

Name: PerfectAire 12,500 BTU Wall-Mount
Brand: PerfectAire

Model #: 3PAMSHH12-SZO / 3PAMSDH12

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

PerfectAire3PAMSMini-split heat pump

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Check model number 3PAMSHH12-SZO / 3PAMSDH12 at your preferred retailer.

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Same housing as 3PAMSH09B-SZO; small details may differ.

Decision guide

What the published numbers mean before you compare every spec.

12,500 BTU is closest to ENERGY STAR’s 450–550 sq. ft. room-size row.

At 5°F, certified output is 12,100 BTU/h — 97% of its 47°F rating.

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

Voltage is not published in the sources we cite, so confirm it before choosing equipment.

HSPF2 10 is below the 10.5 average among 128 models in the same rounded capacity class.

Your room is near 450–550 sq. ft. under the ENERGY STAR starting-point assumptions, and a load calculation agrees.

You have not confirmed the voltage, room load, and installation requirements for this exact model.

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

Outdoor model number	3PAMSHH12-SZOSource: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
Indoor model number	3PAMSDH12Source: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
AHRI reference number	207796630Source: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
Series	3PAMSSource: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
Heating capacity at 47F	12,500 BTU/hSource: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
Heating capacity at 17F	10,600 BTU/hSource: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
Heating capacity at 5F	12,100 BTU/hSource: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
SEER2	19.5Source: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
EER2	11.7Source: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
HSPF2	10Source: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23

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The sources we cite do not publish these values for this model, so we leave them blank rather than guess.

VoltageMinimum circuit ampacityMaximum breaker / fuseLine 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.