Learn more about daytime use here and learn about sleeping with Close Comfort here.

Check out our questions and answers pages here: Urdu

Or, please call our office on 042 3575 6311 or 0310 571 6505 or 0310 571 6506 and our friendly staff can help answer your questions.


Here are frequently asked questions and answers in English.

Common Questions and Answers about the World’s Smallest Air Conditioner 

Why doesn’t Close Comfort have a stronger throw of cold air like other ACs?

An AC with a strong blast of cold air feels great in the shop, but wastes your money because most of the cold air runs up against the hot walls.

The whole idea of this AC is to just cool you and your friends or family, not the walls, floor and furniture.  With more cool air, you will be no more comfortable, but your monthly electricity bill will be much much higher.

With the Cool Focus accessory, you can double the air throw on any Close Comfort model without increasing noise or electricity consumption.

Where does the hot air go? Is it better with exhaust pipe?

Surely the room gets hotter if the hot air comes out inside the room.  Isn’t it  better to send it outside with a pipe?

Close Comfort uses so little power that the air coming out is warm, not hot and rises to the ceiling, just like the air from a kitchen fridge. The room might seem to be warmer, but if you measure the temperature, it is hard to tell the difference. The warm air loses its heat through the ceiling.  Try it: climb on a ladder and you just might detect a tiny temperature rise with a sensitive thermometer.  Open windows help with fresh air circulation.

A normal portable room air conditioner uses at least 4 times as much power so the air coming out of the pipe is hot.  It sucks in more air than it cools, and the exhausted air is replaced with more hot air coming through ceiling openings and vents, doors and windows, cancelling the cooling, so the room only gets slightly cooler, and you will still use 7,500 – 25,000 worth of electricity a month.

Are there any health benefits?

Yes, lots.  First, you will get a sound sleep through load shedding with Close Comfort running on a UPS or generator.  That is the greatest health benefit.

By using Close Comfort with the windows open you enjoy air conditioned comfort in fresh air.  In a room with a split AC, the doors and windows have to be closed and the air is never refreshed.  Harmful air builds up (e.g. carbon dioxide, body emissions, volatile organic compounds or chemicals released from furniture and plastics) and everyone in the room shares it.

People tell us that with Close Comfort, they don’t experience that nasty itchy eye feeling from normal air conditioners when they wake up.

The optional bed tent provides even more cooling for sleeping and provides natural insect protection without resorting to chemical treatments.

How long does it take to cool the tent?

Only 5-10 minutes.  You can pop into bed for a nap during the day whenever you feel like it.

When I step away from Close Comfort, or get out of the tent, it feels so hot in the room.

Sure.  It does feel hot because you were used to the cool air from Close Comfort.  You are noticing how effective Close Comfort can be. 

Provided you feel comfortable most of the time, you can easily cope with the heat now and then.  That’s better for you, a healthier alternative, because you don’t lose your natural ability to adapt to warmer temperatures in summer.  If you live with air conditioning all the time, you lose that natural acclimatization ability and then you become dependent on air conditioning.

How much area does this small air conditioning unit cool?

Close Comfort works in any size of room, even outside in sheltered places.

Close Comfort creates a cool microclimate around you, a gentle stream of cool air surrounds your face and upper body.  You need to sit within 1.5 metres of Close Comfort to feel cool.  With the Cool Focus accessory, you can feel cool up to 3 metres away.

Close Comfort works best with the air flowing around your face and neck. 

Close Comfort will keep a family cool sitting together on the couch, watching a movie on TV. 

If you want to cool a crowd, use a normal AC: that’s what they are designed for.

Why would anyone sleep in that tent? That’s not part of our culture.

Close Comfort will provide 3-5° of apparent cooling for sleeping. We recommend you use the bed tent when you need extra cooling or insect protection.

Until a few decades ago, nearly everyone in Pakistan slept in a mosquito net tent during the summer.  Culture is just what you are used to.

Once you try Close Comfort’s patented bed tent in a hot bedroom you will never go back.  It is just so quiet and comfortable inside.

You have to try it for yourself: then you will believe!

How does using Close Comfort help the environment?

You use so much less energy, helping to reduce pollution and heat emissions, and keeping your environment more comfortable and healthy for everyone.

The enormous heat discharged outside by large numbers of normal room air conditioners can lift city temperatures by 2°C or more, making the environment more uncomfortable for everyone else, and increasing the cost of running air conditioners, especially for people living in high rise buildings with external units on the outside of the walls or balconies.

Normal split air conditioners slowly leak refrigerant gases which are mostly potent greenhouse emissions.  Close Comfort uses a tiny refrigeration circuit which is permanently welded to eliminate any leaks.  It contains less refrigerant than you would find in a can of shaving cream.

What’s the warranty and where do I get after-sales service.

Warranty is 24 months.  Call us on (08) 9386 3257 for after-sales service, 12 noon – 7 pm Easter Daylight Saving Time.  Normally we will send you a replacement air conditioner.

Can I adjust the temperature setting?

Yes. The new PC9+plus model has a remote control with automatic thermostat control. 

Close Comfort automatically regulates the air temperature, maintaining the most comfortable air temperature for you in any environment.  At night, if you feel cold, use a light blanket or quilt.

Does humidity affect the cooling with a small air conditioning unit?

Yes: it makes Close Comfort work harder.  Close Comfort provides more cooling power automatically and works best in humid conditions.

Can Close Comfort be used in extreme heat?

Close Comfort is made to provide relief from the heat, so it can be used in any indoor climate up to 44°C. Above 28°C indoor temperature, we recommend you use a patented Close Comfort bed tent.  (The compressor is designed to last 10 years.  Using Close Comfort for extended time periods above 35°C may shorten the compressor life.)

I like to feel really cold with my AC.  Close Comfort does not seem to do that.

One person we know who likes to feel cold in his large office uses three Close Comforts aimed at himself.

For sleeping, if you want to feel really cold, use our patented bed tent to intensify the cooling.

During the day in hot conditions, Close Comfort may not be best for you.  But, be ready for those high electricity bills with a normal air conditioner.  Be aware that medical evidence is starting to show that cold air conditioning is not good for a healthy heart and cardiovascular system.  Being exposed to heat is actually good for you, provided you are in good health.

Does this small air conditioning unit need maintenance?

Just check the three filters every 2 weeks and clean them using water if needed.  In dusty conditions, we recommend an annual clean inside the AC by a qualified AC technician, before the summer season starts.

Does it need a special power outlet?

No. The unit can be plugged into any standard power outlet.

Does the water have to be emptied out?

Close Comfort requires no ducting, plumbing or piping of any kind. Water condensed from humid air is re-evaporated. Distilled water can be collected if you need it to top up your batteries by removing the rubber bung.  The water accumulates in the drawer for the power cord and is not suitable for drinking.

In rare conditions, you might need to empty the water tray.  But we have never experienced that with our current model.

Technology and Power-Related Questions and Answers

Can I save energy with a DC Inverter AC?

Surely, a DC inverter AC only uses 300 Watts once it is cooled the room down, and so is just as economical to run?


DC Inverter ACs are designed for well insulated buildings common in USA, Japan, UK, Canada and Europe.  With a well-insulated room, the power consumption to maintain room temperature with moderate outdoor temperatures can be quite low, around 300- 500 Watts.

In Australia, most buildings have little or no insulation at all in the walls and the weather can be so much hotter outside in summer.  Therefore a DC Inverter AC requires just as much power (often more) than a normal split AC of equivalent performance.  Some people report energy savings from using DC inverters.  However, this is because you can obtain energy savings just by installing a new AC with clean heat exchangers and a new compressor which is not worn out.

If I use a battery and inverter, how big does the battery need to be?

We recommend a 500 – 1000 Watt inverter.  A 1.2 kWhr Lithium battery pack will have just enough capacity to run Close Comfort through the night.  We recommend that you try out Close Comfort with your chosen battery and inverter before you accept the equipment you plan to use.

Can I use a portable generator to run this small air conditioning unit?

A small generator can run 5-10 Close Comfort ACs, depending on its power output capacity.

Can Close Comfort run on solar power?

Yes.  Close Comfort requires normal AC power.  Two panels of 250 Watts each should provide enough power with a suitable inverter.  Make sure you get your solar dealer to demonstrate it working before you accept the equipment.  A separate guide is available for off-grid power supplies.

Can I use daytime solar power and store it in batteries for night time use?

Yes, if you have sufficient battery storage.  A Tesla Powerwall (or comparable battery system) will enable you to run several Close Comfort ACs through the night.

What cooling technology does Close Comfort use?

Close Comfort uses conventional compressor refrigeration, just like your refrigerator or freezer.  It has a completely welded refrigeration circuit that will last as long as your fridge or freezer.

Does Close Comfort use a refrigerant?

Yes. It uses R134a, which is a fluorinated refrigerant gas which is covered by the Montreal Protocol protecting the ozone layer and the 2017 Kigali Agreement. R134a does not harm the ozone layer significantly.  However it is a potent greenhouse gas and will be phased out in Australia and other countries commencing this year.  We will replace r134a with r290 (propane, a natural refrigerant) once suitable compressors are available.

What kind of compressor does Close Comfort use?

Close Comfort uses a simple, quiet, electric reciprocating compressor, just like your refrigerator or freezer.

What’s the life of this AC?

Depending on its usage, if maintained well, the life of the Close Comfort unit is equal to or greater than the life of a standard air conditioner.  It has no parts exposed to the outside weather conditions so should last longer.

Does it need spare parts?

No. Close Comfort has nothing that wears out and needs replacing.  Spare parts are available from your supplier if you misplace a filter or another removable part.  Call us on 0310 571 6505/6 for spares.

Why is Close Comfort so good for the environment, especially since you advertise that it can be used outdoors?  Surely that’s a waste of energy!

Close Comfort is the only technology that can meet the growing demand for air conditioning in emerging markets like India, Indonesia and Pakistan.  No other air conditioning technology can reduce energy consumption and greenhouse emissions sufficiently to eliminate emissions by 2045 – 2055: the timescale set by the IPCC in 2018. All other technologies require replacement of almost all current buildings on the planet where air conditioning is needed, and even then it is unlikely that these technologies will be available in time on the scale that’s required. 

Even in Europe and Australia, Close Comfort can help eliminate greenhouse emissions for existing buildings which are neither sufficiently well insulated nor sealed to prevent drafts, nor have the necessary air refreshing machinery to keep the indoor air healthy to breathe.