Mestek xf350a1ns1110 Commercial Unit Heater 350000 Btu/h 115V

Product Description

The MESTEK xf350a1ns1110 is a heavy-duty commercial unit heater designed for large-space heating applications running on natural gas. Rated at 350,000 BTU/h with an 83% AFUE efficiency rating, this heater delivers reliable warmth in demanding environments. It operates on 115 volts and uses a direct spark ignition system paired with an aluminum heat exchanger for consistent, efficient combustion. The unit is power vented and supports either standard vent or separated combustion configurations, giving installers flexibility in how combustion air is sourced. Two 1/3 HP ODP motors drive airflow distribution across the conditioned space. Licensed commercial HVAC technicians are the primary installers for this equipment.

The xf350a1ns1110 is suited for commercial and industrial spaces such as warehouses, manufacturing facilities, hangars, and large retail or service buildings where high-capacity gas heat is required. The power-vented design and separated combustion option make it adaptable to tightly constructed or high-infiltration environments. Single-stage operation simplifies controls integration, and the aluminum heat exchanger reduces weight while maintaining thermal transfer performance at this output level.

Key Features

• 350,000 BTU/h heating capacity for large commercial spaces
• 83% AFUE efficiency rating on natural gas
• Direct spark ignition for reliable, pilot-free startup
• Aluminum heat exchanger construction
• Two 1/3 HP ODP blower motors for airflow distribution
• Power vented with support for standard vent or separated combustion
• Single-stage operation for straightforward controls integration

Compatibility

Designed as an OEM commercial unit heater for natural gas heating applications requiring 350,000 BTU/h output at 115 volts with power-vented or separated combustion venting.

Installation Notes

Installation must be performed by a licensed commercial HVAC technician in accordance with the International Fuel Gas Code and all applicable local codes. Shut off the gas supply and disconnect electrical power before servicing or making any connections. Venting must be sized and routed per the manufacturer specifications and local mechanical codes, with separated combustion ducting verified clear before startup. Do not operate the unit without all vent and combustion air connections fully secured and inspected.

Technical Specifications

• Heating Capacity: 350,000 BTU/h
• AFUE: 83%
• Fuel Type: Natural Gas
• Voltage: 115 volts
• Ignition: Direct Spark
• Heat Exchanger Material: Aluminum
• Blower Motors: 2 x 1/3 HP ODP
• Venting: Power Vented, Standard Vent or Separated Combustion
• Staging: Single Stage
• Unit Weight: 325 pounds

Standard Information

• Brand: MESTEK
• Manufacturer Part Number: xf350a1ns1110