Sirair Frequently Asked Questions

Most air-conditioning systems these days are of inverter type. Inverter air conditioners use a variable frequency drive to control the speed of the motor thus in turn the compressor. When the cooling demand is met the compressor will slow down, in return reducing running costs.
Inverter air-conditioners reach the desired room temperature faster, and then constantly adjust to maintain perfect comfort. Inverter air conditioners are more economical to operate and quieter to run than fixed speed units but need to be correctly sized.

The key difference between an inverter and a non–inverter air conditioner is that an inverter air conditioner can regulate the speed of its compressor motor. … In comparison, non–inverter motors only run at full speed or stop. The motor runs at full speed but turns off once room temperature drops to the desired level.

The cooling and heating capacity of an air conditioner is measured in kilowatts (kW).
The size of the Air-conditioner is measured in BTU’s.

Air-conditioner Sizing Guide

9000btu
SUITABLE FOR SPACES + – 18 SQ METERS
Bedrooms
Studies
Small lounges
Small kitchens
Small offices
3.5kW RANGE –

12000btu
SUITABLE FOR SPACES + – 24 SQ METERS
Bedrooms
Bedrooms with ensuites
Studies
Small lounges
Mid-sized kitchens
Small rooms with high ceilings
Offices

18000btu
SUITABLE FOR SPACES 36 SQ METERS
Large bedrooms
Bedrooms with ensuites
Studies
Mid-size lounges
Large kitchens
Mid-sized rooms with high ceilings
Offices

24000btu
SUITABLE FOR SPACES + – 48 SQ METERS
Large lounges
Large open plan areas
Small shops
Offices

30000btu
SUITABLE FOR SPACES + – 60 SQ METERS
Shops
Halls
Large open plan areas
Offices

For more complex installations a heat load calculation should be performed. A heat load calculation comprises many factors such as the size of the area, size of windows, roof type, building material, whether there is insulation, external shading or internal shading, etc. Incorrect sizing will mean inadequate cooling/heating. An air-conditioner is designed to work within a certain space/enclosure. Always remember to size up your air-conditioner for open plan areas.
If you are unsure on sizing please email us, or go to Request a Quote or call 011 315 1246

Unlike R22, R410a does not contribute to the depletion of the ozone layer. R410a is better at absorbing and releasing heat than R22, making it more energy-efficient to use. Since R410a operates at higher pressures it requires the use of tougher and more durable air conditioner parts

Heat pumps transfer heat by circulating a substance called a refrigerant through a cycle of evaporation and condensation. A compressor pumps the refrigerant between two heat exchanger coils. In one coil, the refrigerant is evaporated at low pressure and absorbs heat from its surroundings 

Length x breath x average dept x 1000 = your literage
Eg: 6 x 3 x 1,5 x 1000 = 27000 litres

A heat pump that has a CoP of three can create three kW of heat from every one kW of electricity. The average home requires around 12,000-kilowatt-hours (KwH) of heat per year. Therefore, in order to achieve this, a heat pump with a CoP of three would use 4,000 kW of electricity annually.

A heat pump works like an inverse air conditioner. It takes heat particles from the atmosphere, compresses them, pumps them into your geyser, and circulates the water around. Heat pumps are efficient in how they use electricity and a 1kw input of electricity generally translates to a 4 kW output of electricity. 

This refers to the energy efficiency rating and measures the air-conditioner’s energy consumption and efficiency. A higher EER rating on your air conditioning system means the system is more energy-efficient. You can compare the ratings from each manufacturer.

This simply means that the system is able to both cool and heat.

Sirair can help guide you if a warranty issue arises. Firstly the client needs to contact Sirair. When placing a warranty claim you will need to provide proof of purchase (your tax invoice), installers’ details, and proof of service history.

Domestic Air-conditioners – 5 year warranty

Commercial Air-conditioners – 3 year warranty

Portable Air-conditioners – 1 year warranty

Air coolers – 1 year warranty

Pool Heatpumps – 2 year warranty

Hot water Heatpumps – 2 year warranty

All systems sold by Sirair carry a warranty. For more details refer to each product warranty guideline.

Should any product be purchased via a reseller, the reseller is responsible for your warranty. Free spare parts are covered under our warranty.

Important Information to Maintain Your Warranty!

Keep a copy of your invoice

Ensure your product is installed by a qualified Sirair technician – contact Sirair for this information.

Ensure operation is as per the manufacturer’s instructions.

Ensure the air inlet and outlet of the outdoor unit are kept clear of obstructions.

Ensure that the correct size is installed for the application.

Ensure that you carry out the bi-annual or annual service.

If your system fails, contact the manufacturer without delay.

No warranty due to “acts of god”

EFT and Credit card. No cheque payments. Funds would have to be cleared into our account before dispatching.