What are the criteria to buy an ideal air cooler for house
There are two variants of coolers —- Desert / personal coolers. Capacity of Desert coolers vary from 45 ltrs to 75 ltrs while personal coolers come in the range of 20, 30 ltrs. If you want to cool a larger area say your living room , dining hall , you need a desert cooler. Desert coolers require more power, more space, and more water. One should always buy air coolers that provide a better cooling effect & lesser noise.
Materials of cooling pad used in the coolers are —- Pine wood wool or Honeycomb media
The main advantages of air coolers are – Cost effectiveness / energy efficiency / portability & Environment friendly.
CFM [ Cubic feet per minute ] criterion is an ideal tool to find out the amount of fresh air cycled through the environment each minute . To calculate the CFM the following formula needs to be followed –
If the room area is 500 sq ft with 8 ft ceiling CFM should be – 500 x 8 /2 = 2000 CFM.
Therefore for this particular room air cooler with at least at least 2000 CFM is required.
Guidelines to select the best geyser for the family:
The purchase decision of a geyser with a specific tank capacity will depend upon three main criteria – 1] No. of family members & their total water consumption & 2] Usage pattern of hot water in the family , no. of bathrooms in the household 3] Climate. Ideal capacity of the geyser to be purchased should be nearly close to the amount of hot water required at one go. Apart from bathing , in a household , hot water is required for washing clothes & utensils too. Geysers come in two variants – a] Instant type & b] Storage type . Instant geysers come in sizes 1 – 3 ltrs .The word – “Instant “ connotes – wherein the water becomes hot immediately when switched on & it has to be used soonest as there is no storage function. Instant geysers are ideal for a small family of 1 – 3 persons. Moreover Instant geysers because of their size occupy a lesser space in the bath room. In instant geysers the electricity consumption is apt & there is practically no wastage of hot water or loss of heat. Storage geysers vary from sizes 6 – 50 ltrs & are ideal for a family of 4 + & above. Purchase decision of a particular storage geyser would depend on the number of times hot water is used in the family be te bathing or washing or in the kitchen. Ideal capacities of storage geysers for a family should be 10 – 25 ltrs. It is generally presumed that bath using a bucket consumes approx. 15 ltrs of water , thus a storage geyser of 6,10 0r 15 ltrs will be apt in this case. Bathing in a tub or shower consumes approx. 20 – 25 ltrs of water & likewise one should purchase geysers in similar capacities for such cases. For a colder climate a 15 ltrs storage geyser for a family of 4+ / 5+ will be ideal whereas in a temperate/ hot climate a 6 ltr or a 10 ltr would suffice.
Last , but not the least —- one should not compromise on safety & refrain from buying unbranded geysers from the market.