0307-01 Heating, ventilation, air conditioning, refrigeration and furnace systems: Installation, service or repair.

Applies to:

Installation, service, or repair of heating systems, ventilation systems, air conditioning systems, refrigeration systems, furnaces, built-in vacuum systems, or pneumatic tube systems.

Materials used and goods installed, serviced or repaired may include, but are not limited to:

• Air conditioning units;

• Air purification systems;

• Concrete pads;

• Duct systems, including duct cleaning;

• Fittings;

• Flat sheets of metal;

• Galvanized pipe;

• Heat pumps;

• Heater units;

• Hoods and protective metal covers;

• Hot water tanks;

• Insulation wrap;

• Preformed or bent venting duct and pipe;

• Refrigeration units;

• System controls;

• Thermostats; and

• Vent collars and reels.

Work environments may include, but are not limited to:

• Construction sites;

• Residential customer locations;

• Commercial customer locations;

• Yards and shops; and

• Display areas or showrooms.

Exclusions:

• Worker hours engaged in sheet metal fabrication shop operations are reported separately in classification 3404.

Note:

When a contractor's business is assigned a manufacturing shop or plant classification such as classification 3404, all shop and yard operations are reported in the manufacturing shop or plant classification and the special exception classification 5206 is no longer applicable to the contractor's business.

• Businesses doing only duct cleaning or duct cleaning combined with other business activities in 1105-02 are classified in 1105-02.

• Worker hours engaged in other sheet metal installation or sheet metal construction are reported separately in classification 0519.

Notes:	• For rules on assigning and reporting in more than one basic classification, see WAC 296-17-31017 Multiple classifications.
	• Classification 0307 is a construction industry classification (see WAC 296-17-31013);
	• In most cases, contractors cannot have a store classification in addition to classification 0307, unless store operations are their principal business. To determine if a contractor can also have a store classification such as classification 2009 or 6309, apply the multiple classification rule (WAC 296-17-31017). If a contractor does not qualify for a store classification, the contractor may report employees working in a display area or showroom in classification 5206 or 6303 if the work meets the restrictions described in the exception rule (WAC 296-17-31018) and the applicable classification description (chapter 296-17A WAC).

0307-05 Wood, pellet or gas stove: Installation, service or repair.

Applies to:

Installation, service, or repair of stoves that burn wood, pellets or gas.

Materials used and goods installed, serviced or repaired may include, but are not limited to:

• Electric furnace units;

• Fireplace inserts or units;

• Fittings;

• Gas fireplace logs;

• Gas stoves or furnaces;

• Hearth pads;

• Hoods and protective metal covers;

• Preformed or bent venting duct and pipe;

• Pellet stoves;

• System controls;

• Thermostats;

• Vent collars and reels; and

• Wood stoves.

Work environments may include, but are not limited to:

• Construction sites;

• Residential customer locations;

• Commercial customer locations;

• Yards and shops; and

• Display areas or showrooms.

Exclusions:

• Worker hours engaged in brick or masonry work are reported separately in classification 0302.

• Worker hours engaged in sheet metal fabrication shop operations are reported separately in classification 3404.

Note:

• Worker hours engaged in other sheet metal installation or sheet metal construction are reported separately in classification 0519.

Notes:	• For rules on assigning and reporting in more than one basic classification, see WAC 296-17-31017 Multiple classifications.
	• Classification 0307 is a construction industry classification (see WAC 296-17-31013);
	• In most cases, contractors cannot have a store classification in addition to classification 0307, unless store operations are their principal business. To determine if a contractor can also have a store classification such as classification 2009 or 6309, apply the multiple classification rule (WAC 296-17-31017). If a contractor does not qualify for a store classification, the contractor may report employees working in a display area or showroom in classification 5206 or 6303 if the work meets the restrictions described in the exception rule (WAC 296-17-31018) and the applicable classification description (chapter 296-17A WAC).

[Statutory Authority: RCW 51.04.020 and 51.16.035. WSR 22-21-117, § 296-17A-0307, filed 10/18/22, effective 1/1/23; WSR 16-14-085, § 296-17A-0307, filed 7/5/16, effective 1/1/17. Statutory Authority: RCW 51.04.020, 51.16.035, and 51.16.100. WSR 12-11-109, § 296-17A-0307, filed 5/22/12, effective 7/1/12. Statutory Authority: RCW 51.16.035 and 51.16.100. WSR 07-12-047, § 296-17A-0307, filed 5/31/07, effective 7/1/07. WSR 07-01-014, recodified as § 296-17A-0307, filed 12/8/06, effective 12/8/06. Statutory Authority: RCW 51.16.035, 51.16.100. WSR 06-12-075, § 296-17-513, filed 6/6/06, effective 1/1/07. Statutory Authority: RCW 51.16.035. WSR 98-18-042, § 296-17-513, filed 8/28/98, effective 10/1/98; WSR 96-12-039, § 296-17-513, filed 5/31/96, effective 7/1/96; WSR 85-24-032 (Order 85-33), § 296-17-513, filed 11/27/85, effective 1/1/86; WSR 83-24-017 (Order 83-36), § 296-17-513, filed 11/30/83, effective 1/1/84; Order 73-22, § 296-17-513, filed 11/9/73, effective 1/1/74.]

PDFWAC 296-17A-0307

Classification 0307.