Adventures in chimney replacement

We purchased Hacienda de la Tortuga knowing that the circa-1928 chimney was no longer fit for purpose. The chimney is built with a single brick thickness and some of the bricks and mortar had deteriorated due to age and use. Because the structure is not reinforced, an earthquake could send it tumbling into the house or onto the neighbors driveway.

A chimney liner is a flexible or rigid metal tube that is placed into the existing chimney

A traditional fix for this sort of problem is the installation of a metal chimney flue “liner”, a relatively straightforward and inexpensive operation. But due to the narrowness of the chimney and the lack of reinforcement, a liner alone would not solve our problem.

The two masons we consulted both said we needed to tear down the chimney and either seal the fireplace (making it non-functional) or rebuild the chimney at great expense. Neither option was particularly appealing, but we were also unwilling to give up on the charm and comfort of a fireplace.

How a direct vented fireplace works when vented through a rear wall

Having lived on the East coast, I was convinced that another approach would be easy and cost-effective: tearing down the existing chimney and installing a direct venting fireplace instead. While standard wood burning fireplaces are dirty, inefficient, and actually pull heat out of the house, direct vent units are sealed, clean, use natural gas for fuel, and provide substantial heating capacity. Plus, they do not require a chimney!

And this is when I started to think I was losing my mind. While I was convinced that direct vent was the way to go, the local “experts” I consulted were dismissive of the option. They told me direct vent fireplaces are ugly, cheaply made, and inflexible, since you cannot use them to burn wood or to put in other decorative elements. They said that venting through a masonry wall was not possible and would not meet code requirements. I could only find one nearby store that even stocked direct vent units; even there the salesman tried to discourage me from buying one. And if I had bought it, would I have been able to find someone to install it?

I could only find one nearby store that even stocked direct vent units; even there the salesman tried to discourage me from buying one.

Direct vented fireplaces are sealed units that can look quite nice when properly installed

Eventually I identified a local company that was willing and able to reinforce and line the existing chimney for about half the price of a full replacement. That work was completed right before Thanksgiving and, pending final city approval, we now have a functional fireplace that can burn wood.

As I write this on a 40ºF winter morning, I still regret that the direct vent gas option was not possible. It would be nice to have a crackling fire accompanied by heat. At least I know I’m not crazy — plenty of YouTube videos, including one by This Old House, espouse the benefits of the approach I was pursing.

California is a land of paradoxes, and this strange fireplace journey is just another one to add to the list. In an era of climate emergency, why wouldn’t the state be encouraging and even incentivizing the replacement of dirty wood-burning fireplaces with cleaner natural gas alternatives? I wonder how often we will actually burn wood, and how much the heartburn about our contribution to atmospheric carbon pollution will offset our enjoyment of the crackling flames.

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1 Comment

  1. I must admit that I prefer our gas fireplace to the wood burning one we had before. Cleaning the other one was such a messy job and if the cats got into it there would be sooty footprints everywhere!

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