Ventairs Fan Selection Guide is a fast and easy way to help select which size fan is best for a specific type of room or living areas. There are no set rules as most fans have a variety of speeds and consumers may have individual needs and expectations. Follow the Guide and you can’t really go wrong.
Very much so!
A standard size DC ceiling fan may cost as little as 1 to 2 cents per (8 hours) night on low speed. In addition to this, cooling (and heating) costs can be slashed by utilising the fan's ability to create an effective cooling effect in summer, and heat distribution in winter.
AC (alternating current) motors are generally lower cost, but also noisier and less efficient than DC (direct current) motors.
DC motors can use between 50% to 75% less power than AC and although the initial cost may be a little more, savings over time will work out in favour of the consumer.
EC (electronically commutated) motors are a modern solution that is set to replace both ‘AC and DC’ and offer the best energy efficiency and controllability.
In the summer (forward) setting, air will be directed downwards to create an effective cooling effect while reversing the direction in winter (reverse), will create a gentle indirect circulation that spreads heat evenly rather than having it accumulate near the ceiling.
The difference in performance and airflow between three, and four blade fans (of similar size), is minimal. Therefore, the choice is more often based on personal preference and aesthetics.
Many of todays molded fans can be used for both indoor and covered outdoor applications. A coastal rated fan will have components that are better equipped to cope with harsher conditions and areas that are prone to sea mist exposure.
For safety reasons, current regulations state that ceiling fan blades should be at least 2.1meters from the floor. For most domestic applications, ceiling fans are designed to work best at heights between 2.1 meters and 2.7 meters and it is recommended that extension rods are considered once ceiling height exceeds 3.1 meters.
For low ceilings (less than 2.43 meters), the down-rod of some fans can be reduced in length by a qualified installer to maintain a minimum of 2.1 meters from floor to blades.
Yes, most fans today use a ball and socket suspension system that will allow for an angle of up to 15 degrees of slope (approx.). Extension rods may be required if the blade tips are too close to the descending slope of the ceiling.
For slopes greater than 15 degrees, please consult your licensed installer for alternate installation options.