Linn County Air Quality Division
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Residential Heater Registration Permits



On September 16, 2009, the Linn County Board of Supervisors approved revisions to the Linn County Code of Ordinances requiring owners of indirect-fired residential heaters to submit a registration permit for these units. Owners or operators of existing indirect-fired residential heaters, or who are planning on installing, modifying, or reconstructing their heaters, must submit a registration permit. An initial filing fee is not required at this time.

FINAL RULE (PDF File).
Residential Heater FAQ (PDF File).
Burn-Wise Operating Tips (PDF File | EPA Website).
Hearth, Patio, and Barbecue Association Best Burn Practices (PDF File).
Consumer Fraud Act (PDF File).

Residential Heater Registration - New or existing after October 1, 2009 (DOC File | PDF File)
Planning & Development Mechanical Permit Application (PDF File)

Brief Summary
New Linn County Ordinance
Locally Required Permits: Residential Heaters
LCCO 10.5(1)-(9)

Linn County residents and business owners are required to obtain the appropriate mechanical permits from the Department of Planning and Development (see the link above), but many don't realize they may need a permit or registration from the Air Quality Branch as well. On September 16, 2009, the Linn County Board of Supervisors approved revisions to the LCCO requiring owners or operators of indirect-fired residential heaters to submit a general registration instead of obtaining a standard air construction permit, while complying with the applicable requirements. This change was enacted to ease the financial and paperwork burden on owners and operators of indirect-fired heating units. An owner or operator planning to install, modify, or reconstruct a residential heater must submit a registration permit. Additionally, owners or operators of existing residential heaters must submit a registration permit, unless otherwise exempt or required. If it is unclear whether or not your home or business must obtain a standard air construction permit or qualifies for this general registration, please contact the Air Quality Branch.

Indirect-fired residential heaters are any heater in which combustion occurs in a sealed chamber, where air or water passes across a heat exchanger and is not in direct contact with the flame. Examples of indirect-fired residential heaters are: most central air heating units, boilers, outdoor wood boilers, and some hot water heaters. These units can utilize many fuels, such as natural gas, fuel oil (#1 and/or #2), waste oil, wood, or other fuels. Linn County exempts certain units from obtaining permits or registrations, depending on their size and fuel use. The following is a summary of the exemptions and/or requirements based on fuel:

  • Units combusting waste oil are required to obtain a standard air construction permit, regardless of the size of the unit (application forms can be found here).
  • Pursuant to LCCO 10.5(9)"a", units combusting natural gas with a maximum heat rating less than 10,000,000 British thermal units per hour (10 MMBtu/hr) are exempt from obtaining a standard air construction permit or a general registration.
  • Pursuant to LCCO 10.5(9)"b", units combusting fuel oil (#1 or #2) with a maximum heat rating less than 1 MMBtu/hr are exempt from obtaining a standard air construction permit or a general registration.
  • Indirect-fired residential heaters powered by electricity are not required to obtain a permit or registration.

Pursuant to LCCO 10.8(2)"b", all indirect-fired residential heaters installed, modified, or reconstructed after October 1, 2009 must meet the 0.6 pound per million British thermal unit (lb/MMBtu) emission standard for particulate matter (PM). If the owner or operator is unable to demonstrate compliance pursuant to LCCO 10.17. Failure to demonstrate compliance will result in the unit being sealed pursuant to LCCO 10.23. Individuals proposing to install an outdoor wood boiler should visit the EPA Burn-Wise Website for information on EPA Phase 1 and 2 qualified units certified to meet the 0.6 lb/MMBtu PM emission standard.


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