48,500 BTU heat pump

PerfectAire 48,500 BTU Multi-Zone

Name: PerfectAire 48,500 BTU Multi-Zone
Brand: PerfectAire

Model #: 4PAMS48-HH-MZO5

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

PerfectAire4PAMMini-split heat pump

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Decision guide

What the published numbers mean before you compare every spec.

48,500 BTU is sized across zones. Each zone needs its own load calculation.

At 5°F, certified output is 48,000 BTU/h — 99% 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 10.6 is above the 10.0 average among 46 models in the same rounded capacity class.

A room-by-room load calculation supports this outdoor system across the planned zones.

You have not calculated each zone’s load.

Multi-zone systems need room-by-room load calculations and zone planning; use Manual J for final sizing.

Outdoor model number	4PAMS48-HH-MZO5Source: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
AHRI reference number	217221818Source: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
Series	4PAMSource: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
Heating capacity at 47F	48,500 BTU/hSource: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
Heating capacity at 17F	46,000 BTU/hSource: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
Heating capacity at 5F	48,000 BTU/hSource: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
SEER2	20.8Source: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
EER2	11.9Source: ENERGY STAR Mini-Split Heat Pumps dataset · 2026-07-23
HSPF2	10.6Source: 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The sources we cite do not publish these values for this model, so we leave them blank rather than guess.

Indoor model numberVoltageMinimum 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.