<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31347230</termId><termName>heat pumps</termName><termType>PT</termType><termNote><![CDATA[ Equipment used in systems that heat or cool areas and that have compression cycles and reverse refrigeration cycles. ]]></termNote><termCreatedDate>2026-03-30 20:33:40</termCreatedDate><relation><relationType>UF</relationType><termId>31347231</termId><termName>heat pump</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31347232</termId><termName>pumps, heat</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>NT</relationType><termId>31377302</termId><termName>solar-assisted heat pumps</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31377306</termId><termName>geothermal heat pumps</termName><termType>PT</termType></relation></term>  </Zthes>