Mestek xf250a1ns1110 Commercial Unit Heater 250000 Btu/h

Product Description

The MESTEK xf250a1ns1110 is a commercial gas-fired unit heater rated at 250,000 BTU/h, designed for demanding heating applications in large commercial and industrial spaces. Running on natural gas at 115 volts, it delivers 83% thermal efficiency through a single-stage direct spark ignition system. The heat exchanger is constructed of aluminum, and the unit is driven by a 1/3 horsepower open drip-proof motor. Power-vented operation supports both standard vent and separated combustion configurations, giving installing contractors flexibility in venting design. At 194 pounds, this is a substantial unit intended for permanent overhead or wall-mount installation by qualified commercial HVAC technicians.

This unit heater is suited for commercial and light-industrial environments such as warehouses, manufacturing facilities, garages, loading docks, and large retail or agricultural spaces where high-output gas heat is required. The power-vented design with separated combustion capability makes it appropriate for tightly constructed buildings where indoor air quality and combustion safety are critical installation considerations. Single-stage firing simplifies control wiring and thermostat integration in straightforward commercial heating systems.

Key Features

• 250,000 BTU/h output for high-capacity commercial heating
• 83% AFUE thermal efficiency on natural gas
• Single-stage direct spark ignition for reliable, straightforward operation
• Aluminum heat exchanger for corrosion resistance and heat transfer efficiency
• 1/3 HP open drip-proof motor for fan-forced air delivery
• Power-vented with standard vent or separated combustion venting options

Compatibility

Designed as an OEM-style commercial unit heater replacement or new installation for natural gas power-vented heating systems in commercial and industrial applications requiring 250,000 BTU/h capacity.

Installation Notes

Installation must be performed by a licensed commercial HVAC or mechanical contractor in accordance with local mechanical codes and NFPA 54 for gas appliances. Shut off gas supply and disconnect electrical power before servicing or making connections. Venting must be installed per the manufacturer specifications and applicable code requirements for power-vented or separated combustion appliances. At 194 pounds, proper rigging and structural support must be confirmed before mounting.

Technical Specifications

• Heating Capacity: 250,000 BTU/h
• AFUE: 83%
• Voltage: 115 volts
• Motor Output: 1/3 HP
• Motor Type: Open Drip-Proof (ODP)
• Ignition Type: Direct Spark
• Staging: Single-Stage
• Heat Exchanger Material: Aluminum
• Fuel Type: Natural Gas
• Venting: Power Vented, Standard Vent or Separated Combustion
• Unit Weight: 194 pounds

Standard Information

• Brand: MESTEK
• Manufacturer Part Number: xf250a1ns1110