Mestek gg105a1nsa11 Low Profile Gas Unit Heater 105000 Btu/h

Product Description

The MESTEK gg105a1nsa11 is a residential and commercial low-profile gas-fired unit heater rated at 105,000 BTU/h on natural gas. It operates on 115 volts and delivers 82% thermal efficiency through an aluminum heat exchanger. Ignition is handled by a direct spark system, and the unit is driven by a 1/10 HP open drip-proof (ODP) motor. The power-vented design supports either standard venting or separated combustion configurations. An LP conversion kit is available, making the unit adaptable to propane applications where needed. Licensed HVAC technicians and mechanical contractors are the primary installers of this equipment.

This unit heater is suited for residential garages, light commercial shops, warehouses, and similar spaces that require overhead or wall-mounted supplemental or primary heat. The single-stage heating control keeps operation straightforward. The low-profile cabinet is appropriate for installations where ceiling clearance or mounting space is limited. The power-vented configuration allows flexible flue routing to meet site-specific venting requirements.

Key Features

• 105,000 BTU/h input on natural gas with 82% AFUE efficiency
• Aluminum heat exchanger for corrosion resistance and heat transfer performance
• Direct spark ignition eliminates standing pilot, reducing gas consumption during idle
• 1/10 HP ODP motor drives the blower for forced-air heat distribution
• Power-vented design supports standard vent or separated combustion setup
• LP conversion kit included for propane fuel compatibility
• Low-profile cabinet designed for space-constrained installations

Compatibility

Designed as an OEM-style residential and commercial low-profile gas unit heater; compatible with LP conversion kit as noted. Verify venting type and BTU/h sizing against local load calculations before specifying.

Installation Notes

Installation must be performed by a licensed HVAC or mechanical contractor in accordance with IFGC requirements and local mechanical codes. Shut off gas supply and disconnect electrical power before servicing or mounting the unit. Venting must be sized and installed per the manufacturer venting instructions and applicable codes; do not mix vent materials or reduce flue diameter below listed minimums. Verify fuel type and supply pressure match the unit configuration before commissioning.

Technical Specifications

• Input Capacity: 105,000 BTU/h
• AFUE: 82%
• Fuel Type: Natural Gas (LP kit included)
• Voltage: 115 volts
• Motor: 1/10 HP ODP
• Ignition: Direct spark
• Heat Exchanger Material: Aluminum
• Staging: Single-stage
• Venting: Power vented, standard vent or separated combustion
• Unit Weight: 115 pounds

Standard Information

• Brand: MESTEK
• Manufacturer Part Number: gg105a1nsa11