Why does my whole house fan keep turning off?

The whole house fan motor belt may be loose or broken, in which case it will need replacement. The fan operates for a while and then stops. The internal thermal sensor may be automatically switching your unit off due to malfunction, inadequate attic ventilation, or a faulty motor bearing or fan shaft bearing.

How long should my whole house fan run for?

For best results, run your whole house fan for at least 10 minutes first thing in the morning to bring a cool breeze through the house and into the attic. This will expel any hot stale air buildup from the night before. Then, close windows, doors and the blinds on the sunny side of your home.

Can you run a whole house fan all night?

Whole house fans can be ran at any time of the day, however, depending on the time of year and the goal you have, the time of day may be different. For cooling purposes during the warmer months of the year, Whole house fans are designed to run whenever it is cooler outside than inside your home.

Do whole house fans need maintenance?

For most whole-house fans, annual maintenance isn’t really much of a need. Whole-house fans that have oil ports to help the motor run will need basic lubrication every few years, but little more. An attic exhaust fan, which is designed only to cool the attic space, almost never requires any maintenance.

How much does it cost to fix a whole house fan?

Whole House & Attic Fan Repair Costs
Whole house fan repair ranges from $250 to $350 but can cost up to $650. Replacing a broken motor will cost about $125 for an attic fan and between $50 and $100 for a whole house model. Professional installation will run an added $80 to $100 per hour.

Why does my AC fan keep turning on and off?

Your air conditioner may be short cycling because it is repeatedly starting up then overheating (and shutting down) due to a bad compressor, dirty filters, dirty coils, low refrigerant, or frozen coils. An overcharged system will cause liquid Freon to get into your compressor and cause it to malfunction.

Does a whole house fan use a lot of electricity?

A whole house fan uses 200-700 watts while an air conditioner uses 2,000-5,000 watts. It will cost 90% less to run a whole house fan than the central air. For example, if your bill is $150 for a month, using a whole house fan will allow you to save up to $135 a month!

How many windows should you open with a whole house fan?

A: Opening two or more windows half way or more is recommended. Basically you should make it easy for the home ventilation system to pull in air. As for which windows to open, for general cooling you want to open windows far away from the fan to provide airflow to the whole house.

Should I run my whole house fan in the winter?

A whole house fan can provide benefits nearly every day of the year. Not only does it help remove hot air from your home, but it can provide air circulation and improve the overall air quality in every room of your home. Here are some things to know about using the whole house fan in the winter.

How do you service a whole house fan?

Simply dusting your whole house fan on a regular basis can help ensure that it stays in working condition. You can use basically any type of standard household cleaning product. A mild and non-abrasive cleaner is effective at removing dust and debris from the blades.

Is a whole house fan cheaper than AC?

The cost of operating a whole-house fan is also less expensive compared to an air conditioning unit. While energy usage will vary depending on how much you use it and what type of unit you have, in most cases it’s pretty much accepted that whole house systems are less expensive and use less energy.

How do I get the most out of my whole house fan?

Use high speed to ‘kick-start’ the cooling, and use low to run quietly through the night. Make sure at least one window is open. Opening two or more windows halfway or wider is recommended to allow the fan to do its job. For general cooling, open windows far away from the fan to provide airflow to the whole house.

How much should I pay for a whole house fan installation?

Cost to Install a Whole House Fan
To add a whole house fan, homeowners pay between $1,250 and $1,830 on average. On the low end, you can expect to pay between $700 and $950 including labor. On the high end, the project can cost $2,000 to $2,750 including labor.

Do electricians repair attic fans?

If the problem with your attic fan is in the electric installation, it’s repaired by an electrician at a cost of $40 to $100 per hour.

What’s the difference between an attic fan and a whole house fan?

In a nutshell, whole house fans are designed to run after sundown, using cool night air to ventilate and cool your entire living space. Attic fans are designed to run on hot sunny days to clear super-heated air from your attic.

Do you need both attic fan and whole house fan?

The Verdict
You don’t need to choose between either a whole house fan or an attic fan; they are not mutually exclusive. You can install a whole house fan to draw air up through the house and an attic fan to remove that air from the attic.

Can Whole house fans cause mold?

Many homeowners that have a whole house fan love running them when they get out of the shower to exhaust all that steam and humidity that builds up and can cause mold.

What temperature should attic fan be set to?

90 to 110 degrees Fahrenheit

When it comes to an attic fan’s temperature setting, it’s best to adjust it to anywhere from 90 to 110 degrees Fahrenheit. It’s impossible to state a single number because your attic can effortlessly soar above 95 degrees (on average).

Should I turn off my attic fan in the winter?

But did you know that an attic fan can also play an important role in your attic during winter? It’s true. An attic fan in winter can help prevent ice dams, reduce moisture in your attic during winter months, and prevent mold and mildew buildup due to moisture problems in the attic.

Should my attic fan run all the time?

In this post, we leverage industry professional knowledge and research to provide a thorough answer. Generally speaking, an attic fan should run as long as it takes to replace all the attic air with outside air. Usually, this takes roughly 15 minutes.