Humidifiers & Rusted Gears Farming Guide for Upgrades and Expeditions in Arc Raiders
Arc Raiders forces players into tense expeditions where scavenging specific components like humidifiers and rusted gears can make or break your build progression and weapon upgrades. This guide compiles practical spawn knowledge, route planning, loadout choices, and team strategies to help you consistently secure these items. Whether you’re farming for upgrades, completing expedition objectives, or fulfilling a daily hunt, this guide gives you repeatable routes, high-probability spawn zones, and optimization tactics to maximize each raid’s yield.
Use this guide as:
A route and spawn reference when planning raids.
A checklist for loadout choices and prioritization.
A farming playbook for solo and four-player teams.
An SEO-ready resource for your posts, videos, and guides.
Key goals in this guide:
Reveal high-probability zones and exact search behavior that yields humidifiers and rusted gears.
Provide step-by-step farming routes for solo, duo, trio, and quartet teams.
Offer quick tips on how to optimize your chance of obtaining these components per raid.
Include a FAQ and troubleshooting section to handle common pitfalls.
How the Loot System Affects Where You Find Humidifiers and Rusted Gears
Arc Raiders distributes craftable components and expedition parts across several container types: floor loot, small crates, large crates, red lockers, and rare caches. Understanding which containers are most likely to contain humidifiers and rusted gears improves search efficiency and route planning.
Humidifiers: Often categorized as industrial expedition components used in mid- to late-game upgrades and certain quest objectives. These spawn more frequently in industrial zones, boiler rooms, HVAC shafts, and inside large crates or workbench-adjacent lockers.
Rusted Gears: Basic mechanical components with higher overall spawn rates but still needed in quantity for certain weapon and gadget upgrades. They commonly appear in maintenance areas, engine rooms, near heavy machinery, and inside small crates or floor spawns.
Priority container types (best to worst for these parts):
Large crates & supply caches — highest chance for rare/valuable components.
Red lockers — guaranteed or high-chance special items in many maps.
Workbench adjacents & special containers — spawn gated by map events.
Small crates & floor spawns — frequent but low-roll on rarer items.
Enemy drops — rare, but can be consistent if map has mechanical foes.
Understanding these rules will shape the routes below and where you point your team’s attention when entering each zone.
How to Read These Routes (Quick guide to applying routes in-game)
Each route targets a specific map type (industrial, urban, tundra, or facility).
I mark container priorities and approximate time windows for clearing.
Routes assume average mobility: a single sprint-capable player can clear the route in 4–8 minutes depending on enemy activity and extraction timing.
Use pinging and short-range markers to coordinate quick loots in squad play.
For solo play, adapt routes to focus on high-value containers and avoid time sinks.
Loadouts and Perks That Increase Farming Efficiency
Optimizing for speed and survivability yields more component pickups per hour than min-maxing DPS alone. Here are loadout concepts for different playstyles:
Solo Speedfarm Loadout
Weapon: Lightweight SMG or shotgun with high mobility attachments.
Perks: Increased pick-up radius, faster container open speed, reduced special enemy aggro.
Tools: Portable cloak or smoke grenades to slip past high-traffic zones quickly.
Goal: Hit large crates and red lockers quickly, avoid prolonged fights.
Team Farming Support Loadout
Weapon: Mid-range AR with steady DPS.
Perks: Supply beacon (if available), loot radar, revive speed, buff aura.
Tools: Deployables that speed looting (workbench buffs or shared loot perks).
Goal: Hold extraction points and funnel loot runners back safely.
Aggro-Control/Tank Loadout
Weapon: LMG or heavy with crowd control.
Perks: Taunt/aggro draw, extra health/resistances.
Tools: Area denial grenades; deploy near high-value crates.
Goal: Secure high-value areas and allow looters safe windows to search containers.
General perk and trait recommendations:
Prioritize agility, pick-up speed, and container detection over raw damage for dedicated farming runs.
Choose survival options when farming in higher-difficulty expeditions; a death costs time and often a failed run.
Equip a companion or device that reveals containers or highlights red lockers.
Solo Route: Quick Industrial Sprint for Humidifiers and Rusted Gears
This route focuses on time-to-loot and maximizes chest-to-gain ratio for solo players in industrial or facility maps.
Entry procedure: Drop at the southern loading bay or main service entrance. Immediately sprint toward the large crate clusters near the central conveyor shaft.
First 90 seconds: Clear two large crates and a nearby red locker. Open large crates first.
2–4 minutes: Move to the boiler room corridor. Check floor spawns around piping and behind pallets—high chance for humidifiers here.
4–6 minutes: Cut through maintenance corridor to engine room. Search small crates and the back-of-engine lockers for rusted gears.
Extraction window: Only pursue extra sites (secondary caches) if you have time remaining; otherwise head to extraction with obtained components.
Pro tips:
Use short routes: don’t detour more than 30 seconds for side rooms unless a red locker is pinged.
When you find a humidifier, communicate or mark the spot for later runs — many maps have repeatable high-chance nodes.
Duo Route: Two-Person Sweep with Safety Net
Duo play allows split tasks: one player secures containers while the other holds a safer perimeter and hunts additional enemy drops.
Drop split: Player A (looter) takes the maintenance and HVAC shafts; Player B (cover) secures the entrance and clears enemy waves.
Timed split: First two minutes focus on large crates and red lockers. Player A sweeps while Player B controls spawn chokepoints.
Moving together: After initial sweep, regroup at the engine room to clear any holdout containers.
Extraction plan: Assign an extraction watch—Player B can start extraction sequence while Player A does a last-pass sweep for missed containers.
Pro tips:
Use quick revive mechanics to avoid losing a whole run’s value.
Duo speedfarm excels at chaining red locker checks: one player opens while the other watches flanks.
Trio and Quartet Routes: Max Loot, Minimum Risk
With three or four players, you can cover entire map quadrants and perform coordinated, redundant searches to guarantee humidifier or rusted gear spawns are found.
Division of labor:
Player 1: Industrial wing + boiler room
Player 2: Engine room + machine shop
Player 3: Loading bay + outer yard
Player 4: Extraction watch and rapid redeploy support
Opening minutes: Split-and-check all red lockers simultaneously to avoid duplication of effort.
Mid-run: Rotate players between zones every 3 minutes to keep pace with enemy AI and respawn triggers.
Endgame: Consolidate at high-value cache spots and pull all loot to extraction.
Pro tips:
With four players, you can guarantee coverage of all red lockers and most large crates in a single run on many maps.
Use voice comms and short pings to trade spoils quickly and avoid inventory blowouts.
Map-Specific Hotspots (Generalized by Map Type)
Because Arc Raiders maps vary, the following are generalized hotspot descriptions to help you translate into any map layout. Use these descriptors to find likely spawn points.
Industrial/Factory Maps
Hotspots: Boiler rooms, HVAC ducts, maintenance closets, conveyor-control rooms, and crates near assembly lines.
Item type tendencies: Humidifiers show up frequently in HVAC and boiler room containers; rusted gears populate maintenance tools and crates.
Facility/Lab Maps
Hotspots: Utility corridors, equipment rooms, janitorial closets, and large storage caches.
Item type tendencies: Humidifiers in climate control rooms; rusted gears in maintenance lockers.
Urban/Derelict Maps
Hotspots: Basements, generator rooms, sublevels, and mechanical garages.
Item type tendencies: Rusted gears from floor spawns and small crates; humidifiers less common but can appear in HVAC shafts.
Tundra/Outdoor Maps
Hotspots: Generator pods, mobile workshops, terminated vehicle stacks, and temporary supply crates.
Item type tendencies: Rusted gears common; humidifiers rare but appear near enclosed generator structures.
Container Checklist — Where to Look First Every Time
When you enter a new zone, prioritize containers in this order to maximize short-run efficiency:
Red Locker — often yields high-tier expedition parts.
Large Crate / Supply Cache — check these next.
Workbench-adjacent Cabinets — sometimes scripted to drop components.
Engine Room Lockers — excellent for rusted gears.
Floor Spawns near Machinery — quick to scan; often contain small quantities.
Enemy Drops near special objectives — check corpses and nearby crates.
Always perform a two-pass sweep: first to ping and open high-value containers, second for quick floor searches.
When to Abandon a Run: Time Management Rules
Knowing when to abort is crucial. Don’t waste time chasing low-probability spawns when extraction windows narrow.
Abandon if:
You’re below 60% extraction window and still two nodes away from extraction.
Major team member deaths or lost equipment cause severe time penalty.
Hostile enemy waves reset map events that slow progress.
Continue if:
You’ve opened at least two high-priority containers and are within one minute of extraction.
The squad has full revives and extraction is secure.
Abandoning a run with a single humidifier or a few rusted gears can be better than dying trying to farm more; consistent small hauls compound faster than rare jackpot runs that fail.
Advanced Techniques: Spawn Triggers and Respawn Behavior
While Arc Raiders’ loot spawns have elements of randomness, certain triggers and map events increase chances for desired components.
Event-triggered caches: Completing an objective often unlocks a high-value cache near the event area. Prioritize these events when aiming for humidifiers.
Timed respawns: Some maps respawn floor spawns after a short interval; performing a rapid sweep and looping back can yield extra rusted gears on longer raids.
Enemy behavior: Clearing certain mechanical or boss enemies can trigger supply drops; plan to engage or kite these enemies to force their drops into predictable locations.
Use coordinated triggers: in multiplayer, designate someone to complete map events while others clear adjacent caches.
Inventory Management and Prioritization
To avoid inventory overflow and lost loot:
Carry only what you need for speed. Free up space for humidifiers and rusted gears by leaving heavy gear behind.
Use shared inventory or team vaults if available before extraction to consolidate components.
Prioritize humidifiers over rusted gears when mission objective demands specific counts; if farming for quantity, favor rusted gears because they drop more often.
Farming Schedules and Session Tips
Maximize efficiency across sessions:
Run short 6–10 minute raids repeatedly rather than single long raids with uncertain yields.
Schedule runs during off-peak hours if the game has variable server populations affecting enemy AI or player traffic.
Trade runs with teammates: rotate responsibilities so looters are always fresh and efficient.
Common Mistakes and How to Avoid Them
Mistake: Clearing every single room on first run. Fix: Prioritize high-value containers first; do targeted sweeps.
Mistake: Carrying heavy weapons that slow movement. Fix: Use mobility-oriented gear for farming sessions.
Mistake: Ignoring extraction planning. Fix: Assign extraction watch and time your second pass.
Mistake: Not coordinating red locker checks in squads. Fix: Assign lockers to specific players to avoid duplicate searches.
Checklist Before Launching a Farming Run
Loadout set to mobility and pick-up speed
Perks active: loot detection, faster container interaction
Team roles assigned: looter, cover, extraction
Waypoints pinged for red lockers and large crates
Clear plan for when to abort and when to rotate zones
FAQ
How common are humidifiers compared to rusted gears in Arc Raiders?
Humidifiers are less common than rusted gears and usually belong to mid-tier or specialty component pools. Rusted gears are basic mechanical parts with higher drop rates and can often be farmed in larger quantities per run. Focus humidifier searches on HVAC and boiler room areas, and expect to collect rusted gears by clearing maintenance and engine rooms.
What container types should I prioritize for humidifiers?
Prioritize large crates, red lockers, and workbench-adjacent cabinets. These container types have a higher probability of dropping humidifiers than random floor spawns.
Can I solo farm humidifiers effectively?
Yes, with a mobility-focused loadout and strict route discipline you can solo farm humidifiers. Use the solo industrial sprint route described above to maximize the number of high-value containers you open per hour.
Do higher difficulty expeditions increase humidifier or rusted gear drops?
Higher difficulties typically increase the quantity or quality of loot containers and sometimes the drop rates for rarer components. However, they also introduce more risk and slower runs. Balance difficulty with your team’s ability to clear in a timely manner for best hourly yields.
Are there reliable spawn timers for rusted gears?
Rusted gears are more common and populate floor spawns and small crates more frequently than humidifiers. Certain maps will respawn floor spawns after short intervals, so looping back can net extra rusted gears on longer excursions.
Should I prioritize humidifiers over rusted gears?
Prioritize based on your goal. For specific upgrades and mission objectives, humidifiers may be mandatory and thus should be prioritized. For general crafting and quantity needs, rusted gears are more forgiving and can be farmed in larger numbers.
Quick Reference Cheat Sheet (One-minute preparation)
First target: Red lockers
Next: Large crates near assembly lines or boilers
Solo sprint: Loading bay → Boiler room → Engine room → Extraction
Duo: Split looter + cover; check red lockers simultaneously
Quad: Quadrant sweep with extraction watch
Abort threshold: Less than 60% extraction time left with two nodes away
Closing Tips from High-Efficiency Farmers
Treat each run like a delivery route: minimize detours and prioritize high-yield containers.
Use short, repeated raids to compound loot gains faster than long, risky searches.
Rotate maps to avoid diminishing returns from learned spawn patterns; unpredictable routes prevent boredom and maintain focus.
Share spawn observations with teammates — over time you’ll build a personal spawn map that outperforms generalized guides.
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