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Plastic caps and plugs for HVAC heat exchanger open ports are available. According to the manufacturer, for efficiency, heat exchanger tubing requires protection from dirt, moisture, and debris, from manufacturing through installation in a final unit. By using stock caps or plugs, contamination is easily prevented. Available caps and plugs include short caps, EPDM caps, long caps, end caps, tear caps, side pull plugs, and T-plugs.
StockCap, 123 Manufacturers Dr., Arnold, MO 63010; 800-827-2277; www.stockcap.com
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This overview of the benefits of zoning includes tips for selling to consumers and businesses. Tom Jackson discusses options for new construction and retrofit, as well as some ways a residential contractor can get into the light commercial business with zoning products. Speaker: Tom Jackson, CEO, Jackson Systems
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