Aircon BTU Guide Singapore Calculation (2023)

FAQs

How to calculate BTU for aircon Singapore? ›

Take the area of the room (in sq ft) that you wish to install the aircon at, and simply multiply by around 50-60. You will get the BTU you need. Size of an average HDB room is 130 square feet. There's no definite thumb of rule to follow, saying which number you should multiply by, but the range given is 50-60.

Generally, your temperature control system should have 20 BTU for every square foot of living space in the area you wish to heat or cool. For example, if your room or area is 400 square feet in size, then you should opt for a temperature control system with a capability of around 8,000 BTU.

A higher number indicates a more efficient unit. A higher EER is better (costs less to operate) but units w/ high EER are generally more expensive. All air conditioners made after 2000 have an EER of at least 9.7. An air conditioner that receives an Energy Efficiency rating has an EER of at least 10.7.

A 1,500-square-foot home will require between 45,000 to 90,000 BTUs. A 1,800-square-foot home will require between 55,000 to 110,000 BTUs. A 2,100-square-foot home will require between 65,000 to 125,000 BTUs. A 2,400-square-foot home will require between 75,000 to 145,000 BTUs.

First multiply the width of the room by its length, then multiply it with 25 BTU to get sufficient cooling, under different weather conditions, for the room. (W x L x 25) So, if the room is 12 feet wide and 15 feet long, it equals 180 square feet. Now multiply 180 by 25 BTU per square foot and you get 4500 BTU.

Measure and subtract any obstructions in the room, such as water coolers or furniture, to get your usable floor space. Divide your usable floor space by 36, to determine how many people can fit in the space (assuming a 36 sq. ft. allotment)

What is the thumb rule for AC tonnage calculation? ›

The 1.7X rule

This rule of thumb states that the MAX heating capacity required for your comfort cooling application is 1.7 x the cooling load. For example, if the cooling required is 30 tons (360,000 btus), then the MAX heating capacity required would be 612,000 btus (1.7 x 360,000).

BTU Information

As a general rule we advise you to buy an Air Conditioner with a minimum 7000BTUs as this is the minimum required to call a small room (18sq/m) on a hot day. Medium rooms (24sq/m) need around 10,000BTUs and larger rooms and office spaces (36sq/m) require around 15000BTUs.

25° Celsius is the ideal temperature for Singapore at which your organs will neither feel excessively cold nor hot. This implies that you will experience the highest level of comfort and sleep through the night without any issues. Moreover, setting your air conditioner at 25° Celsius balances the humidity levels.

In a survey on sustainable habits and awareness of climate change conducted in Singapore, around 41 percent of respondents stated that they used the air conditioner between three and six hours per day.

On average, an air conditioner's usage costs $0.25 to $0.35 per hour.

The weighted energy consumption profile across all housing types shows that air-conditioners, water heaters and refrigerators account for about 52% of the total electricity consumption in a household.

How much electricity does an aircon use in Singapore? The amount of electricity that an air conditioning system uses can vary dramatically from one country to another. In Singapore, for example, the average household spends $30-$45 per month on electricity for an air conditioner.

You should keep your filter clean:

When you are using aircon 24 hours 7 day in the week in Singapore, there is no doubt that your electricity will be much higher. Moreover you have to take your air conditioner for servicing at regular intervals. Thus, these two will consume about 50% of your expenses.

How big of a room will 15000 BTU cool? ›

Air conditioners rated at 15,000 Btu should be enough to cool most rooms up to about 875 sq. ft.

400 – 450 sq. feet: 10,000 BTUs.

HVAC contractors use a rule of thumb to allocate 20 BTUS to every square foot of space inside your home.

To determine the number of BTUs per square foot that you need to heat a room, simply multiply the square footage by 20 BTUs per square foot. For example, if a room has 1,000 square feet, you would require 20,000 BTUs to heat it.

8,000 BTUs will cover 200 sq. ft. (1,600 cubic feet)

In our experience, a 12,000 BTU portable can work well in a bedroom up to about 200 square feet, and a 14,000 BTU unit will make some difference up to 400 square feet if you can tolerate the noise.

Air conditioners that are too big consume more energy, endure more wear and tear, and simply don't work as well or as long as an appropriately sized unit. This can cause higher utility bills, more repairs, and discomfort in your home.

Here's some math: You need around 20 BTUs per square foot, which is equivalent to 0.0016 tons. For example, a 600-square-foot space requires a 12,000 BTU or 1-ton unit. By those calculations, an average 1,800-square-foot house would need a 3-ton central air conditioning unit.

Is a 3-ton air conditioner enough for my house? Apart from the capacity of the air conditioner, you also need to account for things like your climate, house size, and existing insulation. In general, a 3-ton air conditioner will work well in an area of around 1,200 square feet.

How do you calculate capacity utilization? Capacity utilization is calculated using a formula: the rate of capacity utilization is equal to the ratio of the actual level of output over the maximum level of output multiplied by a hundred percent. That is, capacity utilization rate = actual output/optimal output.

How many people can fit in a 1200 sq ft space? ›

Room size and power consumption

For instance, a 1-ton window AC or a 1.5 ton split AC is an ideal choice for rooms measuring up to 150-160 sq ft.

For a room sized around 100 to 120 square feet, a 1-ton capacity Air conditioner should be sufficient enough. For bigger rooms, you should buy a 1.5-ton or a 2-ton Air Conditioner. Avail NoBroker's AC Repair Services to Keep Your Air Conditioner Running Efficiently!

Simply divide the BTUs by 12,000 to calculate the tonnage of your unit. For example, if your air conditioner is 36,000 BTUs, you have a 3 ton unit. Some manufacturers bury tonnage or BTU information in their model numbers. Look for an even, two-digit number between 18 and 60.

LG 7,500 BTU Window Air Conditioner with Supplemental Heat, Cools 320 Sq. Ft. (16' x 20' Room Size), Electronic Controls with Remote, 2 Cooling, Heating & Fan Speeds, Slide In-Out Chassis, 115V.

A 2,000 square foot home is best served by air conditioning with around 40,000 BTU capacity, which would be 3.5 tons or 42,000 BTU, since there are 12000 BTU per ton: In other words, to convert 1 ton of cooling to BTU, multiply ton by 12000. A 2-ton AC = 24,000 BTU, and so forth.

What size air conditioner for 1200 square feet? ›

If your space is 300 square feet, you want to find a model capable of producing at least 6,000 BTUs. As a guide, consider 5,000-BTU models for rooms 150 square feet or smaller, 8,000 BTUs for medium-size rooms (340 square feet), and 12,000 to 14,000-BTU models for rooms with square footage from 550 to 800.

Recommended BTU By Room Size

If your room is 10'x 20' (200 square feet), you'd need to look at a 6,000 BTU unit. Once you get into 340 and 400 square feet per room, you'd need an 8,000 or 9,000 BTU air conditioner, respectively.

A unit with too many BTU's, will cool the room fast, but leave the room humid. Too few BTU's will never cool the room down and the unit will run incessantly.

450 – 550 sq. feet: 12,000 BTUs. 550 – 700 sq. feet: 14,000 BTUs.

10,000 BTUs will cover 300 sq. ft. (2,400 cubic feet)

Air conditioners rated at 15,000 Btu should be enough to cool most rooms up to about 875 sq. ft.

What size air conditioner do I need for a 1,500 square foot house? A 2.5 ton air conditioner is best because about 30,000 BTU is needed for a house that's 1,500 square feet.

Here's some math: You need around 20 BTUs per square foot, which is equivalent to 0.0016 tons. For example, a 600-square-foot space requires a 12,000 BTU or 1-ton unit. By those calculations, an average 1,800-square-foot house would need a 3-ton central air conditioning unit.

Is 2 ton AC enough for 2000 sq ft? ›

It is recommended that when your home is between 600 to 900 square feet, a 1.5-ton A/C unit can supply the cooling that you need. Meanwhile, you need two tons if your home is more than 900 square feet up to 1,200 SF.

How Many BTUs to heat a 2000 sq ft house. To heat a 2,000 square foot home, you will need approximately 40,000 BTU's of heating power.

If your space is 300 square feet, you want to find a model capable of producing at least 6,000 BTUs. As a guide, consider 5,000-BTU models for rooms 150 square feet or smaller, 8,000 BTUs for medium-size rooms (340 square feet), and 12,000 to 14,000-BTU models for rooms with square footage from 550 to 800.

For a living room or family room of 350 to 550 square feet, you'll want a large air conditioner with 9,800 to 12,500 Btu, especially if you have an open floor plan.