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filters Issue

Filter Change Due

Regular filter changes are the foundation of booth performance. Here's how to get it right.

Emergency: (877) 489-3727Start Diagnosis

What You're Experiencing

Paint booth filters are due for replacement based on time, usage, visual inspection, or manometer readings.

Visual Signs:

  • Manometer reading in red/change zone
  • Exhaust filters visibly loaded with paint
  • Intake filters showing discoloration
  • Calendar schedule indicates change due
  • Paint consumption records suggest high filter loading
  • Reduced airflow velocity

Sound Signs:

  • Fan working harder (louder than normal)

Safety Risks — Read Before Proceeding

high(NFPA 33 Section 10.3)

Operating with loaded filters

Action: Heavily loaded exhaust filters are a fire hazard and reduce airflow below safe levels.

medium(OSHA HazCom)

Handling loaded filters

Action: Filters with solvent-based overspray may be flammable waste. Handle and dispose properly.

Immediate Steps to Take

  1. 1

    Check manometer reading before change

  2. 2

    Have replacement filters ready and staged

  3. 3

    Plan for brief booth shutdown during change

  4. 4

    Use proper PPE for filter handling

  5. 5

    Dispose of spent filters properly

  6. 6

    Reset manometer or change indicator after change

  7. 7

    Document filter change in maintenance log

Common Causes

Here are the most likely reasons you're experiencing this problem, ranked by how often we see them.

Normal Usage

common

Filters have captured expected overspray and contaminants over normal service life.

High Production

occasional

Production volume higher than anticipated, loading filters faster.

Excessive Overspray

occasional

Low transfer efficiency or spray issues creating extra overspray load.

Environmental Factors

occasional

Shop dust, construction, or unusual debris loading intake filters.

Interactive Diagnostic Tool

Filter Change Decision

Step 1 of 5

Is the manometer in the red/change zone?

If unsafe at any point: If airflow alarm has triggered, change filters immediately. Call WERCS at (877) 489-3727 if needed.

When to Call WERCS

While some issues can be resolved with basic troubleshooting, these situations require professional service:

  • Need filter recommendations for your booth
  • Want to set up filter delivery program
  • Considering filter upgrade
  • Filter change not resolving airflow issues
  • Need booth maintenance service
  • Training on filter maintenance

Schedule Service

(877) 489-3727

Expert technicians nationwide

Filter Change Due FAQ

Common questions about this issue

Exhaust filters: when manometer indicates, or 2-4 weeks for active booths. Intake/ceiling: monthly to quarterly depending on environment. Use manometer as primary indicator, time as backup.
Match filter to your application: efficiency (standard, high-efficiency), holding capacity, frame size. Exhaust: polyester or fiberglass media. Intake: pleated or pad style. Consult WERCS for recommendations.
Filters with solvent-based paint residue may be hazardous waste. Check your EPA region and state regulations. Options: manifest as hazardous waste, squeeze/dry then dispose, or use filter disposal service.
Generally no. Exhaust filters cannot be cleaned—paint is baked in. Some rigid intake filters can be washed, but replacement is usually more practical. Never run booth without proper filters.

Have a question not answered here?

Call us at (877) 489-3727

Related Problems

Filter CloggedLow AirflowAirflow AlarmDust ContaminationExcessive Overspray

Related Parts & Components

Intake FiltersExhaust FiltersManometer

Can't Fix It? We Can.

WERCS expert technicians service paint booths and extraction systems nationwide. 24/7 emergency service available.

Call (877) 489-3727Request Service Quote