Skip to content
Back to Blog
ESG
2026-10-197 min read1

Type 4 and 5 Air Emission Sites, Don't Pay for Control Equipment Alone — Korea's Small-Business Support for Air Pollution Control Facilities, IoT Monitoring Devices and Low-NOx Burners (Up to 90% by Local Government) and the IoT Attachment Mandate: Preparing Before the 2027 Calls

Small Type 4 and 5 air emission sites in Korea can get local government support of up to 90% for replacing control equipment and installing IoT monitoring devices or low-NOx burners. This guide covers where the IoT mandate stands and what to prepare before the 2027 calls open.

KITIM Consulting Team

Which Emission Type Is Your Plant?

Korea's Clean Air Conservation Act sorts emission sites into Types 1 to 5 by their annual volume of air pollutants. Type 4 sites emit 2 to under 10 tonnes a year, and Type 5 sites emit under 2 tonnes. Many small manufacturers fall into these two groups, including painting shops, foundries, food processors and plants running small boilers.

Small sites often hand self-monitoring and control-equipment management to outside contractors, so the compliance risk can feel remote. Before you look at any subsidy, gather three things:

  • Your emission facility permits or filings and your site type
  • The type and installation year of your control equipment, which shows how old it is
  • Self-monitoring results from the past one to two years, including any exceedances
  • The IoT Monitoring Mandate: Where Things Stand

    IoT monitoring devices became mandatory for new Type 4 sites from January 1, 2023, and new Type 5 sites from January 1, 2024. Existing small sites are being brought in step by step. Check with your local government for the date that applies to your site.

    These devices attach current, pressure or temperature sensors with telemetry to emission and control equipment so authorities can confirm remotely whether the equipment is running. In practice, running production while the control equipment is switched off leaves a data trail. Missing devices, faults left unrepaired or failed data transmission can lead to administrative action, so check the following regularly:

  • Sensor power and connectivity, and whether the monitoring system is receiving data
  • Whether operating logs for control equipment line up in time with those for emission equipment
  • A named owner and a clear process for reporting and repairing faults
  • Three Support Programs: What You Can Get

    Local governments generally run small-site support in three areas:

  • Installing or replacing air pollution control equipment, such as aging dust collectors or adsorption towers
  • Attaching IoT monitoring devices, covering sensors and gateways
  • Installing low-NOx burners, replacing boiler or dryer burners with lower-NOx models
  • Support rates differ by local government and program. Some have announced plans to cover up to 60% of IoT device costs, while others cover up to 90% of control-equipment installation for Type 4 and 5 sites. These are examples from individual calls and don't apply everywhere.

    Some local governments also run a separate maintenance support program for control equipment. Ansan City, for example, opened an additional round in 2026. This helps with running costs after installation. Most programs are announced early in the year and accept applications until the budget runs out, so applying soon after the call opens is your best bet.

    What a Winning Application Looks Like

  • Evidence of need: how old the equipment is, your self-monitoring trend, and the reduction you expect after replacement
  • Quotes and design documents: confirm the scope and capacity match the size of your emission equipment
  • Your co-payment: the balance not covered by the subsidy, plus how VAT is treated
  • Post-installation obligations: a required operating period and limits on disposing of or removing the equipment
  • Common reasons for rejection or clawback are duplicate funding, removing or idling equipment after installation, and missing follow-up reports. That is why what you do after selection matters even more.

    Year-End Checklist Before the 2027 Calls

  • Confirm your site type and emission facility filings
  • Assess whether aging control equipment needs replacing
  • Check that your IoT devices are installed and transmitting
  • Ask your local air quality office about the 2027 program schedule ahead of time
  • When you consider a low-NOx burner, weigh the fuel savings and greenhouse gas reductions too. Check whether the same equipment is also covered by carbon-neutrality equipment programs so you don't run into a duplicate-funding problem. If your site has a serious violation on record, it may be excluded from support, so fix those issues first.

    How KITIM Can Help

    KITIM works with you from start to finish. We review your site's environmental compliance, match you with local support programs, help draft applications and estimate emission reductions, and check on post-installation compliance. If you want to know what support your site could get before the 2027 calls open, contact the KITIM consulting team. A consultant will review your site and walk you through a preparation timeline.

    Air Pollution Control FacilitiesSmall Business SupportIoT Monitoring DevicesLow-NOx BurnersClean Air Conservation ActType 4 and 5 SitesManufacturing SMEsEnvironmental Compliance
    매일 자동 업데이트

    이 분야 정부지원사업, AI가 찾아드립니다

    3분 기업진단만 완료하면 귀사에 맞는 공고를 적합도 점수와 함께 추천합니다. 무료입니다.

    AI 맞춤 공고 무료로 받기

    Need Consulting?

    Our technology innovation consultants will propose the optimal solution for your company.