GSI 1222S & 1222H Portable Grain Dryer

The GSI 1222S and 1222H are single-module portable grain dryers in the 1200S&H Series, built around two vane axial fans, two heaters, and a balanced 50/50 plenum split. With 599 bushels of holding capacity and Full Heat drying performance up to 1,080 BPH at 5-point moisture removal, the 1222 is the first model in the 1200S&H lineup to consistently exceed the 1,000 BPH threshold — making it a strong choice for operations that need four-figure single-module drying capacity without stepping into a multi-module dryer.

The 1222 is offered in three configurations: upgradable S-Series, stand-alone H-Series, and X-Stream optimized 1222HX. All three share identical drying performance, fans, heaters, plenum split, grain column, and control system — the differences are structural and operational, giving buyers flexibility to match the dryer to long-term plans and grain quality requirements.

For mid to large farms handling 2,500 to 5,000 acres of corn, the 1222 is frequently the optimal balance point between throughput, footprint, and capital cost.

1222S vs 1222H vs 1222HX — Configuration Choice

1222S — Upgradable Stand-Alone

The S-Series is engineered as the foundation for a future multi-module dryer. Operators starting with a 1222S can later add modules to convert the unit into a 2300 Series two-module dryer or a 3400 Series three-module dryer — without replacing the base. The frame, augers, control system, and electrical capacity are all sized from day one to support that upgrade path.

Best for: Growing operations, expanding farms, or buyers planning a step up to multi-module capacity within 5–10 years.

1222H — Stand-Alone (Non-Upgradable)

The H-Series delivers identical drying performance to the 1222S but is not upgradable. The structural design is optimized for permanent single-module operation, which keeps the unit lighter and simpler than its S-Series counterpart while preserving every drying advantage.

Best for: Established operations with stable acreage, custom drying businesses with fixed throughput needs, or anyone replacing an existing single-module dryer with no expansion plans.

1222HX — X-Stream Variant

The 1222HX is a 1222H with the X-Stream fan rearrangement applied. X-Stream redistributes airflow and heat across the grain column from front to back, producing more uniform drying. Capacity numbers stay identical to the 1222H (1,080 BPH Full Heat at 5-point removal), but grain quality at that throughput improves measurably — fewer overdried kernels at hot spots and fewer wet pockets at cooler areas in the column.

Best for: Operators handling food-grade corn, seed corn, malting barley, or any grain where uniformity directly affects grading and price. X-Stream is offered only in the H-Series body, so choosing 1222HX commits to the stand-alone (non-upgradable) configuration.

Key Specifications

Specification	Value
Series	1200S&H
Configuration	1 Module / 2 Stages
Fans	2 vane axial @ 15 HP, 36″
Heaters	2 @ 4.5 Mil. BTU/hr
Plenum Split	50/50
Grain Column	14″ × 22′
Total Holding Capacity	599 BU
Grain Column Holding Capacity	517 BU
Top Auger (Loading)	8″ flight, 7.5 HP — 3,800 BPH
Bottom Auger (Unloading)	8″ flight / 10″ tube, 7.5 HP
Meter Roll Drive	VFD, 1 HP — 3,080 BPH max
Fuel	LP or Natural Gas
Phase Options	Single Phase or Three Phase
Voltage	230V / 208V / 460V / 575V
Inverter (VFD) Available	Yes
Configurations Available	S (upgradable), H (stand-alone), HX (X-Stream)
Control System	Vision Controls (GSI Connect compatible)

Drying Capacity

All capacities below are wet bushels per hour, based on mature unfrozen #2 yellow shelled dent corn. Full Heat assumes grain is cooled in-bin after discharge; Dry & Cool numbers reflect grain that exits the dryer already cooled. The 1222S, 1222H, and 1222HX share identical capacity ratings.

Mode	Moisture Removal	Capacity
Full Heat	30% to 15%	490 BPH
Full Heat	25% to 15%	670 BPH
Full Heat	20% to 15%	1,080 BPH
Dry & Cool (Continuous)	25% to 15%	300 BPH
Dry & Cool (Continuous)	20% to 15%	485 BPH
Dry & Cool (Staged Batch)	25% to 15%	430 BPH
Dry & Cool (Staged Batch)	20% to 15%	570 BPH

The 1222 hits 1,080 BPH in Full Heat at 5-point removal — about 9% more than the 1220 and the first model in the 1200S&H lineup to clearly break the 1,000 BPH barrier. The capacity gain is delivered by extending the grain column from 20′ to 22′ while keeping the same fan and heater specs as the 1220 — the longer dwell time in front of the heated air translates directly into higher throughput.

For operators running Staged Batch Dry & Cool, the 1222 delivers 570 BPH at 5-point removal — roughly 17% faster than continuous Dry & Cool in the same conditions.

Fan & Heater Configuration

The 1222 runs two vane axial fans rated 15 HP each, with 36-inch fan housings — the same fan specification as the 1220, paired with the longer 22-foot grain column. Both fans pair with their own 4.5 Mil. BTU/hr heater feeding a dedicated plenum. The 50/50 plenum split delivers equal heat input to both halves of the grain column — a key advantage over the standard 1200 Series with its 67/33 split.

In the X-Stream (1222HX) configuration, the fan layout is rearranged to optimize airflow distribution from front to back of the column. This produces more uniform drying across the depth of the dryer, particularly beneficial when running at peak Full Heat capacity where uneven heat exposure is most visible in final grain quality.

For single-phase operations, the 1222S and 1222H are available with single-phase fans drawing 211–266 amps at 230V. The 1222 represents the practical upper limit for single-phase 1200S&H operation — above this, the 1226 requires three-phase service due to higher motor loads. Three-phase configurations are available across all standard voltages (208V, 230V, 460V, 575V) and deliver lower amp draw at the same drying capacity.

Grain Column & Holding Capacity

The 1222 uses standard 14-inch wide grain columns measuring 22 feet long. Total holding capacity is 599 bushels, with 517 bushels held inside the active grain column itself — the remainder occupies the loading and discharge zones above and below.

The 14″ column width is GSI’s standard for the entire portable lineup and is optimized for corn-sized kernels. For drying canola or other small grains, the optional small grain screen with 0.055″ perforations is available. Note that installing the small grain screen reduces corn drying capacity by approximately 20%.

Loading, Unloading & Metering

Top auger (loading): 8-inch flight driven by a 7.5 HP motor, with a peak loading rate of 3,800 BPH. The 7.5 HP loader handles the 1222’s longer column without extending fill time relative to the 1220, keeping truck cycle time short during peak harvest.

Bottom auger (unloading): 8-inch flight in a 10-inch tube, also 7.5 HP. The unloading auger is sized to keep pace with the dryer’s peak metering capacity.

Meter roll drive: 1 HP VFD with maximum metering capacity of 3,080 BPH — meaningful headroom over the 1222’s actual maximum throughput of 1,080 BPH. This margin matters most in All Heat mode at 5-point removal, where actual discharge rates can spike during high-throughput drying cycles.

The VFD-driven meter roll, combined with Vision Controls, lets the 1222 target a specific exit moisture content and adjust unload speed dynamically as inlet moisture varies. For operations handling grain with variable moisture across the harvest day, this dynamic targeting consistently reduces overdrying losses.

Operating Modes

The 1222S, 1222H, and 1222HX all support the four standard 1200S&H operating modes:

All Heat — Maximum throughput. Grain leaves the dryer hot and is cooled in-bin. Best for corn and rice operations with adequate in-bin cooling air. Peak capacity: 1,080 BPH at 5-point removal.

Continuous Dry & Cool — Full continuous flow with integrated cooling. Grain exits cooled and ready for direct binning. Slower than All Heat but eliminates in-bin cooling requirements.

Staged Batch Dry & Cool — Alternating dry/cool cycles inside the dryer. Faster than continuous Dry & Cool while still delivering pre-cooled grain. Particularly useful for high-moisture corn or sensitive grains where extended exposure to heat affects quality.

Continuous Flow — Steady-state production mode for lower moisture differentials.

The 1222HX X-Stream variant runs all four modes with the same capacity numbers but delivers measurably better grain uniformity at any given throughput — most visible in Staged Batch and Continuous Dry & Cool modes where dwell time variations within the column are most apparent in final grain quality.

Transport & Installed Dimensions

The 1222 is engineered as a true portable dryer. Note that installed width differs slightly between configurations — the 1222S is wider due to the structural reinforcement required for future module additions.

Dimension	Transport	Installed
Length	31′ 2″ (hitch to discharge auger)	30′ 2″
Width	8′	8′ 8″ (S) / 8′ (H)
Height	13′ 5″ (11′ 9″ shortest)	14′ 6″ (excl. foundation supports)
1222S Weight	15,500 lbs	—
1222H Weight	15,500 lbs	—
1222HX Weight	15,500 lbs	—

Transport height is given with both standard and shortest configurations — the lower 11′ 9″ figure assumes the discharge auger is folded down for road transport under low bridges and power lines. Installed width on the S-Series is slightly wider (8′ 8″) compared to the H-Series (8′) due to the reinforced module-ready structure.

At 15,500 lbs transport weight, the 1222 is roughly 1,000 lbs heavier than the 1220 — primarily from the extended grain column. This still keeps it within practical range for most farm tractors and trucks rated for portable grain handling equipment.

Vision Controls

The 1222 ships standard with Vision Controls — GSI’s purpose-built color touchscreen control system for grain dryers. Vision handles:

• All four operating modes with dedicated mode-select interface
• Plenum temperature setpoints for both upper and lower heaters
• Moisture-targeting through automatic meter roll VFD adjustment
• Full system diagnostics and fault logging
• Multi-grain profiles for fast switching between corn, soybeans, wheat, rice, and other crops

The Vision display can be mounted directly on the dryer or remoted into a shop or office with a hardwired connection. The remote option is particularly useful for operators running the 1222 continuously during harvest who want monitoring without walking to the unit.

GSI Connect Remote Management

The 1222 is GSI Connect compatible, enabling phone-based remote monitoring and control through the GSI Connect mobile app. Connect functionality includes:

• Real-time dryer status (running, idle, fault)
• Live plenum temperatures and grain moisture readings
• Remote setpoint adjustment
• Remote stop function
• Unload speed adjustment
• Performance logs and runtime alerts

GSI Connect is especially valuable for overnight drying runs or when the dryer is sited away from the main farmstead. Historical performance data captured through Connect can also be used to optimize drying efficiency season over season.

Optional Equipment

Beyond the standard configuration, the 1222 supports several factory and dealer-installed options:

Static Moisture Sampler — Improves moisture reading accuracy by sampling only when grain is stationary. Includes debris guards to prevent fines from contaminating the sensor. Recommended for operators using moisture-targeting mode in Vision Controls.

Inverters (VFDs) — Available on all 1200S&H models including the 1222. VFD upgrades allow finer control over fan and auger speeds, reducing energy consumption at partial loads.

Small Grain Screen — 0.055″ perforations for canola and other small grains. Reduces corn capacity by approximately 20% when installed.

Single-to-Three-Phase Converter — For operators wanting three-phase fan performance on a single-phase service.

X-Stream Upgrade (HX configuration) — Available at order for the 1222 in H-Series body. Cannot be retrofitted to S-Series.

Best Applications for the 1222S, 1222H, and 1222HX

The 1222 fits a specific operational profile, and the right configuration depends on long-term plans and grain quality requirements.

Best fit for the 1222S:

• Large farms with active expansion plans (2,500–5,000 acres of corn)
• Operations expecting to need a 2300 or 3400 Series dryer in 5–10 years
• Buyers wanting over-1,000 BPH capacity now with insurance against future capacity needs
• Single-phase farmsteads needing maximum practical capacity without three-phase service

Best fit for the 1222H:

• Established mid to large farms with stable acreage
• Custom drying operations needing fixed single-module throughput above 1,000 BPH
• Replacement of an existing single-module dryer where expansion isn’t planned
• Buyers prioritizing lower upfront cost over future upgrade flexibility

Best fit for the 1222HX:

• Food-grade corn producers with throughput needs above 1,000 BPH
• Seed corn operations
• Malting barley growers (with small grain screen)
• Specialty grain producers selling into markets where overdried or unevenly dried kernels are penalized

Less suitable for:

• Operations consistently exceeding 1,300 BPH demand — step up to the 1226S/H
• Pure small-grain operations where canola or wheat is the primary use — the 14″ column is corn-optimized

How the 1222 Compares to Adjacent Models

1222 vs 1220S/H: The 1222 adds 2 feet of grain column (22′ vs 20′) while keeping identical fans (15 HP, 36″) and heaters (4.5 Mil. BTU/hr each). The longer column delivers 90 BPH more Full Heat capacity at 5-point removal (1,080 vs 990 BPH) — about 9% more throughput. The 1222 is the right step up if your typical drying volume regularly exceeds 950 BPH.

1222 vs 1226S/H: The 1226 jumps to a 26-foot column, upgrades fans to 25 HP at 40″, and steps heaters to 6.75 Mil. BTU/hr each — roughly 50% more heater output per unit. Full Heat capacity rises to 1,330 BPH, but the 1226 requires three-phase power and adds significant cost. The 1226 is the better choice only when consistent throughput above 1,200 BPH justifies the step up.

1222S/H vs 1122 (1100 Series): The 1122 is a single-fan, single-heater dryer at the same column length. The 1222 delivers nearly double the Full Heat capacity, full mode flexibility, and the 50/50 split for more uniform drying. The 1222 is the better long-term investment for any operation handling more than 600 BPH or wanting four-mode operation.

Frequently Asked Questions

What is the difference between the 1222S and 1222H? The 1222S is upgradable — it can be expanded into a multi-module 2300 or 3400 Series dryer by adding modules later. The 1222H delivers identical drying performance but is not upgradable, with structural design optimized for permanent single-module operation.

What is the 1222HX? The 1222HX is the 1222H with the optional X-Stream fan rearrangement, which improves heat distribution from front to back of the dryer for more uniform grain quality. Capacity ratings are identical to the 1222H.

What is the holding capacity of the GSI 1222? All three configurations (1222S, 1222H, 1222HX) have a total holding capacity of 599 bushels, with 517 bushels in the active grain column.

What is the maximum drying capacity of the 1222? At 5-point moisture removal (20% to 15%) in Full Heat mode, the 1222 delivers up to 1,080 BPH on standard corn — identical across all three configurations.

Can the 1222 run on single-phase power? Yes. The 1222S and 1222H are available in single-phase configurations with 230V single-phase fans drawing 211–266 amps. The 1222HX X-Stream variant is also available in single-phase. The 1222 represents the practical upper limit for single-phase 1200S&H operation.

Is the 1222H upgradable? No. The H-Series is engineered as a permanent stand-alone dryer and cannot accept additional modules. For upgrade flexibility, choose the 1222S.

Can X-Stream be added to a 1222S later? No. X-Stream is currently offered only in the H-Series body and must be specified at order. It cannot be retrofitted to the S-Series configuration.

What fuel does the 1222 use? All 1222 configurations support both liquid propane (LP) and natural gas (NG), selectable at order.

What is the transport weight of the 1222? Approximately 15,500 lbs across all three configurations.

Does the 1222 support remote monitoring? Yes. All 1222 configurations ship with Vision Controls and are GSI Connect compatible.

Related Models in the 1200S&H Series

• 1214S — Entry point in the series, 381 BU holding, 730 BPH Full Heat
• 1218S — Mid-range, 490 BU holding, 860 BPH Full Heat
• 1220S / 1220H — 544 BU holding, 990 BPH Full Heat, X-Stream available
• 1226S / 1226H — Series flagship, 708 BU holding, 1,330 BPH Full Heat, X-Stream available

GSI 1222S & 1222H Reviews & Ratings