Although you may live in a climate where "heat" is not necessary, the heater box must work properly.  Two of the important functions of the heater box and heater valve are to shut the heat "OFF", and provide a fresh air intake into the cockpit.

We start by disassembling the entire heater box.  Then we acid dip the rusty steel parts and powder coat them with a gloss black finish. We replace the heater core or matrix (which is the part that carries and holds the water).  We then make sure the doors inside the heater box move freely and felt line them for a smooth, quiet - somewhat air tight operation.  On the MK II, the heater valve is mounted to the heater box.  We always replace the old heater valve with a new one and a special seal to prevent leakage.  The XKE heater valve is remotely mounted to a steel tube which runs behind the dash.  Not only do we replace the heater valve but we also replace those tubes with an upgraded stainless steel design.  In addition, both cars have mechanically operated valves, which means "cable operated".  We replace all the heater cables with a stainless steel core wire with a plastic protected outer casing that we Teflon lubricate for long life and ease of operation.  We also replace the heater blower motor with an upgraded style for smooth efficient operation.

an upgraded style for smooth efficient operation.