Can you use a patio heater in a garage?

As temperatures drop, many homeowners look for creative ways to stay warm while working or relaxing in their garage. However, as more homeowners repurpose their garages, the question arises: Is it safe to use a patio heater in this garage?

In this article, we will explore whether the patio heater can be used in a garage and the precautions you should take.

Here are reasons that using a patio heater in a garage is dangerous.

Carbon Monoxide Emission

Propane and gas heaters burn fuel to produce heat. During this process, carbon monoxide (CO) is released—a colorless, odorless gas that can be fatal in enclosed areas.
Without adequate ventilation, CO levels can rise quickly inside a garage, posing a serious health risk.

Ventilation Requirements

A propane outdoor heater requires consistent airflow to operate safely. In an open patio, air naturally circulates and disperses gases.
However, most garages lack proper ventilation, trapping exhaust gases and increasing the likelihood of suffocation or poisoning.

Fire and Explosion Risk

Garages often store flammable materials such as paint, gasoline, or cleaning solvents. The open flame of a propane heater in garage can ignite these substances, leading to severe accidents or explosions.

If using a propane heater in a garage is unavoidable, follow these essential safety tips:

• Keep the garage door fully open for continuous airflow.
• Install a carbon monoxide detector nearby.
• Maintain a safe distance between the heater and any flammable materials.
• Never leave the heater unattended.
• Always read and follow the manufacturer's safety instructions.