If you've recently updated or are considering updating to a new super-efficient gas furnace, there is something you should be aware of – potential chimney damage. It is possible that the furnace that you hope will save you a ton of money on your gas bill could be causing damage to your chimney.
How is the chimney damage caused?
Older furnaces allow a substantial amount of heat to be lost up the chimney; the newer high-efficient models are designed to prevent that heat loss. That's where the troubles could begin. As the gas burns to produce the heat, water forms. As the heat of the older models escaped through the chimney, it dried the moisture that had formed on the inner walls of the chimney. These new furnaces don't allow enough heat to escape which causes the moisture to remain on the masonry inside the chimney.
So, the moisture inside your chimney will not evaporate and rise to the top of the chimney – that's where the trouble starts.
Problems Caused by Moisture in the Chimney
There are a handful of problems that should concern you. These are:
- Chimney Blockage – Over time, the masonry will begin to deteriorate. As that happens, the chimney can become blocked and cause carbon monoxide to build up inside your home putting your family at risk of exposure. This can lead to serious illness or even death.
- Acidic Build-up – Acids are also formed as the gas buns. These acids will build up on the masonry inside the chimney and contribute to the expedited deterioration of the masonry.
- Flue Damage – The flue can also deteriorate and allow the carbon monoxide to leak into your home.
- Home Interior Water Damage – As the moisture works its way through the chimney, it can seep into the home and begin to cause water damage to the ceilings and walls. You might think that the roof is leaking and causing the damage, but it could very well be the chimney moisture soaking through to the interior materials of your home.
How do you prevent the damage?
Your first step should be to contact your local furnace repair technician. He will be able to inspect the furnace and the chimney to ensure everything is in good working order. If he finds an issue, he can make the repairs or contact a masonry repair specialist to come and make any necessary changes or repairs to the chimney.
Contact a company like Washam Plumbing Heating & Air Conditioning for more information and assistance.