<p class="MsoNormal" style="MARGIN: 0in 0in 0pt"><span style="FONT-SIZE: 9.5pt; COLOR: black; FONT-FAMILY: Verdana">OK, let me clarify. These (Curtis) heaters tap into the radiator hoses and circulate anti-freeze fluid through a coil in the heater, and an electric fan blows air over these coils to eventually fill the cab with heat. <span style="mso-spacerun: yes"></span>So, technically they are not electric heaters.<span style="mso-spacerun: yes">
Cheers! </span></span></p>