What produces carbon monoxide in a home?

Author: Ryann Bashirian  |  Last update: Saturday, October 11, 2025

Carbon Monoxide sources in the home CO is produced whenever a material burns. Homes with fuel-burning appliances or attached garages are more likely to have CO problems Common sources of CO in our homes include fuel-burning appliances and devices such as: Clothes dryers. Water heaters.

What is the leading cause of carbon monoxide buildup in a home?

How can carbon monoxide build up in a home? The most common causes of carbon monoxide building up are incorrectly installed or poorly maintained or ventilated appliances – like stoves and hot water heaters. Poorly ventilated fireplaces and other gas- or wood-burning appliances can also pose danger.

What are the top 3 sources of carbon monoxide?

Gas stoves. Generators and other gasoline-powered equipment. Automobile exhaust from attached garages.

How can you tell if there is carbon monoxide in your house?

Signs of a carbon monoxide leak in your house or home

Sooty or brownish-yellow stains around the leaking appliance. Stale, stuffy, or smelly air, like the smell of something burning or overheating. Soot, smoke, fumes, or back-draft in the house from a chimney, fireplace, or other fuel burning equipment.

What are the sources of carbon monoxide in the indoors?

There are a number of potential sources of CO indoors, including gas stoves, malfunctioning or improperly vented gas appliances (i.e., water heaters, furnaces, clothes dryers), space heaters, fireplaces, tobacco smoke, and car or truck exhaust that enters from attached garages.

SYMPTOMS AND CAUSES OF CARBON MONOXIDE POISONING - PLUS HOW TO PREVENT IT

What things in a house give off carbon monoxide?

Carbon Monoxide sources in the home
  • Clothes dryers.
  • Water heaters.
  • Furnaces or boilers.
  • Fireplaces, both gas and wood burning.
  • Gas stoves and ovens.
  • Motor vehicles.
  • Grills, generators, power tools, lawn equipment.
  • Wood stoves.

Do electric dryers produce carbon monoxide?

Do electric dryers release carbon monoxide? No, you cannot get carbon monoxide poisoning from an electric dryer because there's no gas involved. Carbon monoxide and its potential for poisoning cannot be produced by any appliance that do not burn gas.

Will opening a window help with carbon monoxide?

If you experience symptoms that you think could be from CO poisoning: DO GET FRESH AIR IMMEDIATELY. Open doors and windows, turn off combustion appliances and leave the house.

Do electric appliances emit carbon monoxide?

Appliances that run on electricity do not produce carbon monoxide.

How to detect carbon monoxide without a detector?

Signs of carbon monoxide:
  1. Stuffy or stale air.
  2. A pilot light keeps going out.
  3. More condensation than usual on your windows.
  4. Soot build up around a fireplace, chimney, or other fuel-burning equipment.
  5. Fuel-burning equipment has a back-draft (flame flares up when a window or door opens and adds air).

What releases a lot of carbon monoxide?

The greatest sources of CO to outdoor air are cars, trucks and other vehicles or machinery that burn fossil fuels. A variety of items in your home such as unvented kerosene and gas space heaters, leaking chimneys and furnaces, and gas stoves also release CO and can affect air quality indoors.

Do electric water heaters produce carbon monoxide?

Where does CO come from? Carbon monoxide is produced by devices that burn fuels. Therefore, any fuel-burning appliance in your home is a potential CO source. Electrical heaters and electric water heaters, toasters, etc., do not produce CO under any circumstances.

How to get rid of carbon monoxide in a house?

If no one is feeling symptoms, ventilate the home with fresh air and turn off all potential sources of CO. That includes your oil or gas furnace, gas water heater, gas range and oven, gas dryer, gas or kerosene space heater, and any vehicle or small engine.

Can carbon monoxide come from AC?

Air Conditioners Do Not Produce Carbon Monoxide. CO gas is a byproduct of incomplete combustion. It is produced when you burn fossil fuels such as natural gas, oil, propane, kerosene, gasoline, charcoal, or wood for heating or cooking purposes.

What is a safe CO level in a house?

The World Health Organization recommends that the indoor air level for CO be below an average of nine parts per million (ppm) for any eight-hour period, and below 25 ppm for any one-hour period. One ppm means one part of CO per million parts of air.

Can dogs smell carbon monoxide?

Carbon monoxide, commonly known as CO, is an odorless, colorless, and non-irritating gas. No pet can identify the gas because CO lacks any scent whatsoever. Exposure can lead to carbon monoxide poisoning in both humans and pets.

Can a microwave give off carbon monoxide?

What you know about climate change is correct — for the most part. Microwaves release millions and millions of tons of carbon monoxide into the environment every year, a new study has shown.

What leaks carbon monoxide in a house?

Common sources of carbon monoxide (CO) in a house include fuel-burning appliances such as stoves, water heaters, and fireplaces. Wood-burning stoves, gas dryers, and charcoal grills used indoors can also emit CO.

What devices give off carbon monoxide?

Appliances that can cause carbon monoxide include:
  • gas boilers.
  • gas cookers and clay ovens.
  • gas or paraffin heaters.
  • wood, gas and coal fires.
  • portable generators.

What are two warning signs of carbon monoxide poisoning?

The most common symptoms of CO poisoning are headache, dizziness, weakness, upset stomach, vomiting, chest pain, and confusion. CO symptoms are often described as “flu-like.” If you breathe in a lot of CO, it can make you pass out or kill you.

Does fresh air get rid of carbon monoxide?

Its half-life is approximately four hours in the fresh air. The treatment for severe carbon monoxide inhalation is using oxygen or hyperbaric chambers to minimize the CO in your system, which you will need to do at a hospital.

How to determine where carbon monoxide is coming from?

The best way to find the source of carbon monoxide is by using a co detector. If you have a high-tech detector or several installed throughout your home, you should be able to get a general idea of where the carbon monoxide emission is coming from. However, it's best to leave your home as soon as the alarm goes off.

Is it okay to leave the dryer running overnight?

It is not recommended to leave a dryer running at night or when you are not at home. The risks of fire and overheating are too high, even though it does not happen very often. It is always better to be present when using household appliances that could pose a potential risk.

How do I know if my dryer is leaking carbon monoxide?

Carbon monoxide is not produced by electric dryers. In general, electric appliances cannot produce carbon monoxide unless they are on fire or some other kind of combustion is going on. If you have carbon monoxide in your home, the source is likely a gas appliance (and you should evacuate and call the authorities.)

Is it safe to vent an electric dryer inside?

Venting a dryer vent indoors can introduce dust, lint, and other pollutants into your home's air. Laundry detergents and dryer sheets often include chemicals that are dangerous to breathe in on a consistent basis.

Previous article
Are higher level apartments hotter?
Next article
Will vinegar damage a bathtub?