Carrier arrangement for mounting a preferably fuel-operated heating device on a vehicle, comprising a mounting area for mounting the carrier arrangement on a vehicle and a carrying area for mounting a heating device on the carrier arrangement , further comprising: - a combustion air line area for guiding combustion air to a combustion air inlet of a heating device , and - a heat transfer medium line area for guiding heat transfer medium flowing in a heat transfer medium circuit of a vehicle through the carrier arrangement and to or from a heat exchanger area of the vehicle heating device , wherein the heat transfer medium line area comprises: - a first line area with a first heat transfer medium circuit connection area to be connected to the heat transfer medium circuit and with a first switching valve connection area to be connected to a switching valve , and - a second line area with a second heat transfer medium circuit connection area to be connected to the heat transfer medium circuit and with a second switching valve connection area to be connected to the switching valve , and - a third line area with a third heat transfer medium circuit connection area to be connected to the heat transfer medium circuit and with a third switching valve connection area to be connected to the switching valve , and - a fourth line area with a first heat exchanger area to be connected to the heat exchanger area and with a fourth switching valve connection area to be connected to the switching valve , and - a fifth line area with a second heat exchanger area connection area to be connected to the heat exchanger area and with a fourth heat transfer medium circuit connection area to be connected to the heat transfer medium circuit . - a combustion air line area for guiding combustion air to a combustion air inlet of a heating device , and - a heat transfer medium line area for guiding heat transfer medium flowing in a heat transfer medium circuit of a vehicle through the carrier arrangement and to or from a heat exchanger area of the vehicle heating device , wherein the heat transfer medium line area comprises: - a first line area with a first heat transfer medium circuit connection area to be connected to the heat transfer medium circuit and with a first switching valve connection area to be connected to a switching valve , and - a second line area with a second heat transfer medium circuit connection area to be connected to the heat transfer medium circuit and with a second switching valve connection area to be connected to the switching valve , and - a third line area with a third heat transfer medium circuit connection area to be connected to the heat transfer medium circuit and with a third switching valve connection area to be connected to the switching valve , and - a fourth line area with a first heat exchanger area to be connected to the heat exchanger area and with a fourth switching valve connection area to be connected to the switching valve , and - a fifth line area with a second heat exchanger area connection area to be connected to the heat exchanger area and with a fourth heat transfer medium circuit connection area to be connected to the heat transfer medium circuit . <EOS>