<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31346584</termId><termName>furnaces</termName><termType>PT</termType><termNote><![CDATA[ Refers to equipment designed for the production of heat by combustion. ]]></termNote><termCreatedDate>2026-03-30 20:33:29</termCreatedDate><relation><relationType>UF</relationType><termId>31346585</termId><termName>furnace</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31322115</termId><termName>cooling, heating and humidifying components</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>31321800</termId><termName>heating systems</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31377138</termId><termName>warm air furnaces</termName><termType>PT</termType></relation></term>  </Zthes>