Imagine you are sitting in your lounge with family and friends, feeling cool while the sun beats down outside. To achieve this you need the right size air conditioning unit. If the air conditioner is too large you will have wasted money buying it and it will cost more to run. If the air conditioning unit is too small, then it won't do the job and you will have wasted all your money.
With the appropriate SureCool air conditioner selector, designed to turn you into an engineer for a moment.
A client was recently offered two different sized air conditioners by two different contractors. He was prepared to pay for the larger one if necessary, but didn't want to waste money if he didn't need to spend more. By using the calculator he was able to decide which unit to buy.
The correct size air conditioner will be both more efficient and more effective in giving comfort. To find out about the latest way to get the best value for money when choosing an air conditioner, read on!
The best way to check the required size is to get a consulting engineer like myself (Clive Blanchard, Consulting Mechanical Engineer)to come and do a heat load calculation. However this is likely to cost a minimum of $300 (probably more). This isn't normally economical, so I have developed simple, quick, accurate on-line selectors for you to check it yourself!
These programs are easy to use calculators, which have been developed using industry standards combined with my experience giving independent reports on problem air conditioning.
Most sizing guides are based on multiplying the floor area by an assumed number of watts per square meter. However an analysis of the 32 most recent residential calculations I have done shows a range from 60 watts per square meter, to 355 watts per square meter. This means you could end up with an air conditioner either twice the size you needed, or even worse, end up with an air conditioner less than half the size needed.
Our selectors are the only ones easy enough for the general public to use, that meet all the above requirements.
If you are air conditioning your office or school there are no other suitable on-line calculators. Office and school air conditioning needs to take into account the fact that there are generally more people per square meter, more electrical loads (computers etc) and other differences.
If the air conditioner you buy is too large, you could waste hundreds (even thousands) of dollars, and end up with less comfort! Eric recently had problems with an air conditioner causing excessive temperature swings. The temperature would get too hot and then the air conditioner would come on, but by the time the air conditioner shut off the house was too cold. He bought my calculator and found that his contractor had put in an excessively large unit (22kW instead of 13kW). Changing the unit fixed the problem. However he would have avoided a lot of pain and hassle (and thousands of dollars) if he had checked the size before buying the air conditioner.
Even worse, if the air conditioner is too small you will have wasted all the money you spent. This could amount to thousands of dollars!
Calculators are available in the Standard on-line form (buy the standard versions by clicking on the relevant button below), or the Professional edition which installs on your computer (typically used by air conditioning contractors.) (buy the professional versions from our on-line shop)
It is possible to be confident of comfort for
Not sure which air conditioner size calculator to get: visit See the comparison table
Why do we have 4 different calculators? - So that each one is as easy to use as possible. For example if you are air conditioning your lounge you won't be asked questions about an office!
The latest upgrade includes the following improvements:
These selectors are cheap insurance for peace of mind. As most accurate air conditioner selection programs cost hundreds or even thousands of dollars, these programs represent excellent value for money.
Use the appropriate selector to find the size of air conditioner that will suit your home, office or school. The programs are valid for Australia and New Zealand only. Instructions and help are included along with free support. The program checks the data you enter and warns you if you need to recheck your measurements.
A recent survey of users of the calculators showed all users who used the calculator before purchasing their air conditioner were very happy with the air conditioner performance.
As a free added bonus, you also get my pdf publication 'How to get the most from your air conditioner'. The advice in this publication will help you get the maximum comfort for the minimum energy use.