The Importance of Smoke & CO Detectors for Homes with Gas Furnaces in Central Texas

Smoke and CO detectors

Natural gas furnaces keep Central Texas homes comfortable through chilly winters, but this comfort comes with responsibility. If your home uses a gas furnace, having both smoke and carbon monoxide (CO) detectors isn’t just a “nice to have”, it’s a safety essential that could save lives. Here’s what every homeowner should know, including the latest on detector placement and safety codes in our region.

Why Gas Furnaces Need Special Attention

Gas furnaces work by burning fuel to create heat. Most of the time, this process is safe and efficient, but not always foolproof. Sometimes, due to lack of maintenance or equipment failure, gas furnaces can release carbon monoxide.

Carbon monoxide is especially dangerous because it’s colorless, odorless, and tasteless, which means you won’t see, smell, or taste it in your home. Even a small leak could cause serious health issues before anyone realizes there’s a problem.

Smoke detectors are equally critical, since electrical faults or blockages in the furnace can spark house fires. Both types of detectors work together to cover the biggest risks associated with gas heating.


The Silent Danger: What is Carbon Monoxide?

Smoke and CO detectors


CO is often called “the silent killer,” and for good reason. When natural gas or propane doesn’t fully combust, the furnace produces this invisible gas. Inhaling CO reduces your blood’s ability to carry oxygen, leading to symptoms like headache, dizziness, nausea, and, if undetected, even death.

Warning Signs of CO Issues from Your Furnace:

  • Soot streaks on or near the furnace
  • Excessive moisture on windows near the furnace
  • Rusting on vents or flue pipes
  • Unusual furnace smells or pilot lights frequently blowing out

Don’t ignore these warnings! They’re clues you might have a hidden issue, and it’s time to call an HVAC pro (like Accu-Temp) for an inspection.


Placement: Where Should Smoke & CO Detectors Go?

Where you install your smoke and CO detectors is just as important as having them in the first place. The National Fire Protection Association (NFPA) and Texas building codes offer clear advice, if in doubt, follow these best practices:

For Smoke Detectors:

  • Install inside every sleeping room and outside each sleeping area
  • Have at least one on every level of your home, including basements
  • Mount high on walls or ceilings, since smoke rises
  • Avoid installing right next to bathrooms, stoves, or air vents to prevent false alarms

For CO Detectors:

  • Place at least one CO detector on every floor
  • Install within 15 feet of every sleeping area
  • Put near, but not directly above, your gas furnace
  • Avoid corners, crawl spaces, bathrooms, kitchens, and directly beside windows or exterior doors
Central Texas Code Tip:
Many Central Texas municipalities now follow guidelines that require CO detectors in any dwelling with a gas furnace, water heater, or attached garage. Some local ordinances may specify detectors within a certain distance of sleeping areas, always check city-specific codes for updates.

Check local codes

Pro Tip: In multi-story homes, don’t forget attics with gas furnaces or basements where gas pipes run, CO can accumulate in any closed space.


Combo Detectors: A Smart Solution

carbon monoxide and smoke detectors

You can streamline safety with combination smoke and CO alarms. These are widely available and meet code as long as the device is certified by agencies like Underwriters Laboratories (UL). Just check installation recommendations before mounting, CO sensors are effective both high on the wall or at knee height (since CO mixes evenly with air), while smoke sensors should always be high!


Testing, Maintenance, and Detector Lifespan

It’s not enough just to install your detectors and forget about them. Make safety a habit with these simple steps:

  • Test all detectors monthly by pressing the “Test” button
  • Replace batteries twice a year (think: when daylight saving time changes)
  • Vacuum detector vents to prevent dust buildup
  • Replace detectors every 7-10 years (check the manufacturer’s label on the device)

If your alarm sounds and it’s not a test, evacuate the house immediately and call 911 or your local fire department. Don’t re-enter until a professional assures you it’s safe.


What’s the Law? Local Codes in Central Texas

Most cities in Central Texas reference the International Residential Code (IRC) or International Building Code (IBC), both of which call for CO detectors near sleeping areas in homes with fuel-burning appliances.

For example, Austin and surrounding Travis County require:

  • Smoke detectors in every bedroom, outside sleeping areas, and on every story
  • Carbon monoxide detectors outside each sleeping area and on every level with a fuel-fired appliance

Williamson, Bastrop, Burnet and Hays counties have similar ordinances. If you live in a suburb, always check your city’s website. Many local fire departments offer a home visit to ensure your smoke and CO detectors are properly placed or even help install them. Just be sure to call the non-emergency number!


Accu-Temp’s Honest, Helpful Approach

At Accu-Temp Air Conditioning & Heating, we’ve seen it all, from dangerously outdated furnace venting to homes lacking safety requirements. Our techs are trained to spot code violations, solve comfort or safety issues, and give straightforward, no-pressure advice.

If you’re adding a new furnace, renovating, or just want peace of mind, let us assess your system setup. We’ll confirm:

  • Your equipment is code-compliant
  • Test your furnace for carbon monoxide issues
  • You have the best system for your home

Change the batteries in your detectors

Safety comes first, always. Reach out today if you have questions, or need a pro to double-check your furnace (contact us here).


Quick Safety Checklist


Protect your home and your loved ones: smoke and CO detectors are inexpensive insurance against Central Texas’ biggest furnace-related risks. When in doubt, Accu-Temp is here to help keep your home safe, cozy, and code-compliant!