Home Improvement

How To Install A Bathroom Vent Fan By Yourself

You can keep mold, fungus, and aromas at bay by upgrading or installing a bathroom vent fan. That’s how to figure out what type and size of fan you’ll need and what you’ll need to complete the project yourself. 

Restroom fans shouldn’t have to be loud to move enough damp air to maintain your toilet free of mildew and odors. A loud bathroom vent fan, on the other hand, may indicate incompetence. The newest toilet fans are whisper silent, yet they expel just as much air as the old rattletrap. These vent fans are also more eco-friendly. Restroom blowers that utilize about 125 watts of energy and emit 5 to 6 sones are present in most houses at least 20 years old. If your house is this old, it’s necessary to get a dryer vent cleaning in Smyrna, GA, on time.

By replacing your restroom fans with a newer, more energy-efficient version, you’ll be able to operate them for extended periods to eliminate more dampness while also saving money on your electricity bill, often without the annoyance of an annoying roar. You may be hesitant to tackle the setup on your own, but don’t let fear stop you. The bathroom vent fan installation instructions will get you started in the correct direction.

There are a few things to think about before changing or putting on a washroom fan.

Any home improvement job can be both tough and gratifying. Still, there are several considerations before replacing or installing a bathroom vent fan, including if you require permission and the sort of toilet fan you require.

Determine if you need an electrical permit

A permit is government-issued documentation that authorizes an individual or corporation to execute specific tasks. Local authorities frequently utilize it to guarantee that professionals doing any work on a building or home is safe and acceptable. Taking into account the current framework’s age and condition, the power system’s duration, and any local restrictions that may prevent major structural changes.

For optimum circulation, a restroom fan needs an electrical connection and ductwork to convey damp air to the house’s exterior. Such work will most likely fall under the electrical and mechanical classifications, which require a license in most cases. It’s worth noting, however, that each city’s permission requirements change slightly. So, check with your local government to see if you need to get a license for this activity.

Decide on the type of fan you require.

Roof, ceiling, and line integrated fans are the three types of washroom fans. Before choosing a substitute, you must know what kind you already have.

Ceiling Mounted:

Restroom fans with a roof mounting have a conscience fan unit that draws air in from the toilet. It then pumps it out via ductwork that extends up to and out through the ceiling. The most frequent sort of lavatory fan is this one.


Wall-mounted toilet blowers are similar to roof bath fans except that specialists have to fix them. It’ll be on an outside wall of the home, and the vent ducting passes through the wall rather than the roof.


One or more vent lines run from the toilet fans to the different bathrooms throughout the house. On the other hand, professionals position the real fan in a distant location, such as a loft, rather than in the restrooms. Even though they may be efficient enough to deliver enough airflow to several bathrooms. These fans are often significantly larger than the roof or wall-mounted fans.

Choose the Right Fan Style and Size

Restroom fans are available in various sizes, ranging from small models that only remove fifty cubic feet per minute to bigger units that clear over 200 CFM. It’s critical to pick the right fan type from this large selection. A too-small blower will not remove sufficient smell or humidity, resulting in mold, fungus, and flaking paint in the restroom. 

You should get mold air duct cleaning in Smyrna, GA, if you ever see mold in your house. In rare cases, a too-large one could lead to a hazardous low air pressure scenario. It can drag lethal monoxide back through a thermostat or water heater’s flue. To determine the size that best suits your needs, add the width, height, and length of the restroom to get the total cubic feet.


Calculate the entire cubic feet by.13 and round up to a single tenth of a cubic foot to obtain the desired CFM. A 7-by-9-foot lavatory with an 8-foot roof, for reference, is 504 cubic feet. Whenever you divide 504 by.13, you get 65. Therefore you’d adjust up to a 70 CFM restroom exhaust fan. It’sIt’s ideal to raise the fan capacity by 50 CFM if you have a big washroom.

Fairly quiet fans are more expensive, but you may find that the lowered sound is worth the extra cost. If you have a mold problem in the restroom, a kind with a developed humidity sensor that operates the motor until the dampness falls to a safe level is a good choice. When changing an existing bathroom motor, designers should choose a substitute fan. It is somewhat bigger in scale than the existing fan for ease of implementation. Professionals may have fitted the conversion models from within the bathroom. It saves you a visit to the loft, and their wider footprint means you won’t have to fix the wall afterward.

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