PRA Air Conditioning Calculator
What size air conditioner do I need? This is one of the most common questions clients ask us.
As a result, we designed our handy air conditioning calculator which can be used for all domestic households and commercial properties.
The air conditioner calculator found below will ask for some important details: the dimensions of the room, the typical number of people using the said room and the number of tea/coffee makers or other electrical equipment within the room.
Each factor makes a significant difference to the AC requirements of a location, so please enter each figure as accurately as possible.
Approved Installers
Pasma
Iso
IPAF
LG
Cluster
Chas
DBS Checked
Warranty
Refcom
Panasonic
Safe contractor
Please Enter The Following:
- Total location dimensions in metres
- The typical number of people using the location
- The total number of tea/coffee machines within the room
- Total number of other electrical equipment (as described or similar)
Once you have determined your requirements from the calculator, we will assess them and be able to give you an estimate of your installation costs
Once you have given the calculator a try, please call us on 0800 980 1340 with the figures quoted, so we may best advise you.
All these factors make a significant difference to the air conditioning requirements of a location so please enter details as accurately as possible. This calculator is intended to provide approximate figures as a guide of your requirements only.
How to Calculate Air Conditioner Size for Houses
Upon confirming the measurements of each room in meters (length, width and height), amount of people within said room and number of electronic heat sources, you can begin to determine the approximate level of British Thermal Units (BTUs) required for each room.
See the supplied table for an average BTU/hr required for the room area.
Most AC BTU calculations are accurate for rooms that will contain no more than 1 to 2 people at a time under regular use; however, we recommend that you add approximately 600 BTU/hr to the calculated capacity for every additional person.
Location of the room and type is also important: if you choose to install an AC unit in a kitchen, we advise adding an adjustment of roughly 4,000 BTU/hr to the calculated AC capacity.
This air conditioning calculator is intended to provide approximate figures as a guide to your requirements only. Please make sure you enter the correct details to get the most accurate estimate possible.
FAQ
What capacity of air conditioner does a room need?
The adequate size of the aircon unit for a room is based on several criteria: dimensions of the room, number of people regularly using the room, the exact number of tea/coffee machines present and the total number of other electrical equipment present in the room (sometimes referred to as ‘heat sources’).
Why is it important to choose the right aircon size?
Selecting the right-sized air conditioning unit for your room is vital to achieving optimal temperature control. A small AC unit may struggle to regulate the heat in a bigger space. An AC unit that is too large for the room, on the other hand, will amend the temperature quickly but will be inadequate at the dehumidifying process – leaving the room clammy, damp and overly cold.
How do I calculate the correct aircon size?
By using our handy AC calculator, you can work out the adequate aircon size for a room by detailing the area/dimensions of a room, the number of people who will regularly use said room, amount of hot beverage-making devices and the total amount of other heat sources (usually computers, fax machines, copiers etc).
How do I calculate the air conditioner size for a house?
Upon confirming the measurements of each room in meters (length, width and height), amount of people within said room and number of electronic heat sources, you can begin to determine the approximate level of British Thermal Units (BTUs) required for each room.
See the supplied table for an average BTU/hr required for the room area.
Most AC BTU calculations are accurate for rooms that will contain no more than 1 to 2 people at a time under regular use; however, we recommend that you add approximately 600 BTU/hr to the calculated capacity for every additional person.
Location of the room and type is also important: if you choose to install an AC unit in a kitchen, we advise adding an adjustment of roughly 4,000 BTU/hr to the calculated AC capacity.
How do I calculate the kilowatts for my house?
Though not integral to the AC calculations, knowing an approximation of the total amount of Area Power Usage (in KW) is advantageous in gleaning more accurate and adequate results for your home. To do this, you must take the wattage of each electrical device and add them together to make a total, whilst also doing the same for your lighting power (again, in KW).
A KW is equal to 1,000w, meaning that 100w = 0.21KW.
How much does air conditioning cost?
The costs of your aircon system will depend on numerous factors.
Firstly, your initial setup costs will depend on the number of rooms you wish to install AC units in, the size of each room, which systems you wish to install and whether you want to install separate, individual AC units or one, homogenous system across your whole home.
Secondly, the long-term costs of installing an aircon system will depend on the prices set by your electricity provider (including if you pay by direct debit or pay-as-you-go), whether you fix the price of your fuel or let it fluctuate and how well you maintain your HVAC system/s.
Contact PRA today for a simplified approach to tackling your aircon-related questions.