Head Office (Singapore): +61 (8) 9386 3257

Questions and Answers – English

Common Questions

More questions

Technology questions

Answers to Common Questions

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.

James Trevelyan explains...

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.  The warm air goes straight to the ceiling and 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.

A normal portable AC uses at least 4 times as much power so the air coming out of the pipe is hot.  But, the air that goes out is replaced with more hot air coming through doors and windows, so the room only gets slightly cooler, and you will still use $3 – $4 worth of electricity a night, much more if you keep it running with a generator through load shedding.

James Trevelyan explains...

Are there any health benefits?

Yes, many.

With the windows open at night, you sleep in fresh air.  In a room with a split AC, the air is never refreshed.  Stale air and carbon dioxide builds up through the night without ventilation.

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 bed tent recommended for tropical locations keeps out insects at night protecting you from bites, dengue and malaria.

The low electricity bills mean you can sleep in a fully relaxed frame of mind.

James Trevelyan explains...

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.

James Trevelyan explains...

But, when I get out of the tent, it feels so hot in the room outside.

Sure.  It does feel hot because you got used to the cool air inside the tent.  If you want the room to be cooler, keep the windows and door open at night.

James Trevelyan explains...

How much area does it cool?

Close Comfort blows a gentle stream of cool air at people: you need to sit within 4-5 feet of Close Comfort to feel cool.

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.

James Trevelyan explains..

Isn’t it uncomfortably hot when you get out of the tent?

Even with a split AC, when you go to the bathroom or another room not air conditioned, it seems hot.  You will want to stay in bed with Close Comfort!

James Trevelyan explains...

How can anyone sleep in that tent? It seems so small.

Once you try Close Comfort’s patented tent, made in China to the highest Australian quality standards, you will never go back.  It is just so comfortable inside.

Try it for yourself.

James Trevelyan explains...

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.

James Trevelyan explains...

Someone told me you can only use it for sleeping.

Not at all.  We use it every day in summer at work.  We set up Close Comfort on a chair or table to keep our faces cool.  It’s magic: if your face feels cool, your whole body feels comfortable.

James Trevelyan explains...

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

Warranty is two years.  Call us on (08) 9386 3257 (11 am – 7 pm Eastern Australia time) for after-sales service.  Initially we will provide service in Brisbane, later elsewhere in Australia.  If you live outside Brisbane, send the unit to us and we will repair or replace it and send it back to you.  Make sure you also send your proof of purchase (sales invoice or receipt) and warranty claim form properly completed.

More questions and answers

How many BTUs per hour of cooling can Close Comfort provide?

Depending on the relative humidity and temperature, Close Comfort provides 2200 – 3700 BTU per hour of cooling, producing the most cooling power in high humidity conditions.

This is much less than a normal air conditioner.

Close Comfort directs the cooling power at people, not the walls, ceiling and floor like a normal air conditioner.  That’s why Close Comfort is so much cheaper to run, and consumes only about one sixth of the power of a normal air conditioner.

Close Comfort is more energy efficient because it does not try and cool the walls, ceiling and floor: have you ever encountered walls that complain when they feel too hot?

Can I adjust the temperature setting?

There’s no need to. 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.

James Trevelyan explains,..

Does humidity affect the cooling?

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

James Trevelyan explains...

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. In extreme conditions we recommend you use a patented Close Comfort bed tent.  Using Close Comfort for extended time periods above 35°C may shorten the compressor life.

James Trevelyan explains...

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.

Close Comfort may not be best for you. Think of using a normal split AC, a large one. But, be ready for those high electricity bills.

James Trevelyan explains...

Does it need maintenance?

Just check the filters every 2 weeks or so and clean them using water if needed.

We recommend that you ask an air conditioner technician to clean the heat exchangers once before each summer season. Otherwise no maintenance is required.

James Trevelyan explains...

Does it need a special power outlet?

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

James Trevelyan explains...

Does the water have to be emptied out?

Water condensed from humid air is re-evaporated. Distilled water can be collected if you need it to top up your batteries.  The water is not suitable for drinking.

Close Comfort requires no ducting, plumbing or piping of any kind.

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

James Trevelyan explains...

Can I save energy and running costs 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, buildings have less insulation and it can be so much hotter outside in summer.  Therefore a DC Inverter AC in Australia can require just as much power (sometimes more) than a normal split AC of equivalent performance.

Try using Close Comfort: you will be pleasantly surprised with the low electricity bill at the end of the month.

How big does the UPS and Battery need to be?

We recommend a 7 kWh battery installation and a 2000 VA mains inverter.

Do I need special batteries?

We recommend deep cycle storage batteries, not automotive batteries.  Several new battery technologies are now available, including Lithium-ion, Zinc Bromine and others.  Even deep cycle sealed Lead-Acid batteries can be used.

What if I am in a remote area without mains power?

We recommend you consider a small generator which can run 5-10 Close Comfort ACs.

Technology Questions

Can Close Comfort run on solar power?

Yes, but you will need a solar system with a 240 Volt inverter.  Close Comfort requires normal AC power.  Two panels of 250 Watts each should provide enough power.  Make sure you get your solar dealer to demonstrate it working before you pay for the installation.

James Trevelyan explains...

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

Yes, if you have sufficient battery storage.  Make sure you ask for a hybrid solar inverter that provides 240 Volt AC power.  The battery storage capacity will depend on the availability of mains power at night.  Plan on at least a 7 kWh battery installation.

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.

What kind of compressor does Close Comfort use?

Close Comfort uses a simple, quiet, electric reciprocating compressor, just like your refrigerator 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. R134a does not harm the ozone layer significantly.

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.

James Trevelyan explains...

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 (08) 9386 3257 (11 am – 7 pm Eastern time) for spares.