Cost for Replacement of Gas Wall Heater in Los Angeles

[Jordan F.]

Hi Everyone,

I have a unit whose gas wall heater just got tagged by the gas company for leaking CO.  I was quoted $5,700 by licensed contractor and $3,200 by one not licensed who wouldn't pull a permit but has done several of these before.   Both said that the whole flue would have to be replaced.  The current heater is the original from 1950 with 1950 flue.  Manager said when they replace unit they replace flue because shape on new ones is different and/or Dept of Bldg and Safety require it.  Does this sound right? Do we really need to pull the permit? The contractor with the lower price said he could do it but it would add $900 to the price.  What do you think of this and the prices?  Thank you.