ford escort 1.4, year 2000, heater is not blowing hot air?

I had this problem on my escort 55td van. it turned out to be the heater matrix (whatever that is!) the mechanic said he had to use a steam cleaner on the inlet & outlet pipes to clear a build up of debris. it now works fabulously. he charged me just £35 well worth it i'd say!. good luck.
i live in manchester.

arthur collins
December 2008