Read reviewsUpdated: February 13, 2026
It’s the middle of winter in Houston, and suddenly you smell some very strange odors coming from your furnace. Some smells are indications of a minor problem, but others can be signs of a major issue and can also be dangerous.
There are four types of smells that may indicate a more serious issue:
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- Dusty – This is the most common smell that emanates the first time you turn the furnace on for the season. It is caused by dust build up from sitting for many months without being used. However, if the smell does not subside after the system has run for a bit, change your air filter. If it continues from there, call in the experts!
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- Rotten egg – This is the best and only way to describe such an offensive smell. Generally, this means that you have a gas leak of some kind. Immediately turn off your furnace, open several windows and call the gas company.
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- Burning rubber – Within the furnace there are several rubber and metal parts. Sometimes aging and general wear and tear can cause a burning smell that seems somewhat mechanical. Immediately switch the furnace off and call a Richmond’s Air residential AC technician to troubleshoot the issue.
- Electrical – The smell of burning wires can indicate problems. Some of the components within the furnace may be getting too hot. Electrical problems can create fires and become bigger issues. Immediately switch the furnace off and get the situation checked out.
At Richmond’s Air, we provide a team of heating and air experts that can troubleshoot any problem that you may be having with the air flow, quality and overall function of your unit.
Click here for more tips regarding gas smells and furnace safety. If you live in the Houston or other surrounding areas, contact us at Richmond’s Air today!
