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If it is hot out and the temperature is building up, you may want to look at one of the many practical and useful techniques to cool a specific room (or the whole home) without resorting to cranking up the AC. In truth, there are a variety of fast and efficient ways to buffer the heat entering the home while maintaining control of the electric bill.

Read on to find out how to make your room cooler!

Simple ways to cool your room

When you have no fan​

Even without using a window fan, box fan, etc. there are plenty of simple and low-cost methods to take control over the heat in the different rooms. For instance, a simple first step is to close the blinds and drapes. Try closing the blinds throughout the day when the temperature is the highest and leave open at night to let the cooler temperature and breeze enter the home.

Additionally, if the bedroom is in the upper half of the property and it is particularly hot there because of the heat rising, it may be practical to relocate the sleeping area to the basement or other ground floor area of the property. Also, if you have the private and secluded garden it may be possible to set up a tent and sleeping bags, which is certain to be fun for the little ones.

A long term course of action for the property that is constantly hot throughout the warm summer months is to plant several trees in the garden on the south side. Use the deciduous trees (lose their leaves) to give great shading ability in the summer and once the leaves drop in the fall there is still enough light in the winter.

How to make your room cooler with a fan

Now that you know there are plenty of practical solutions to control the temperature at home with no air conditioning, there are also several useful techniques that can be used to cool the rooms throughout the home using the different types of floor, desk or window fans.

Here are several of the practical ways to cool a room:

Box fan or pedestal fan

Replace the warm air with cool air

The most practical and efficient way to cool the room temperature is to replace the warm air with cool air.

This is easily achieved using a box or pedestal fan. Set up the fan so that it is in a position to blow air into a room from a cooler area (this can be another room or the outside).

The movement of the cool air is also appreciated for its ability to evaporate sweat. This is great for those that plan to use the room before it is fully cooled to a temperature that is more acceptable and comfortable.

​This method is most effective when able to open a second window or door for the hot air to escape. But, if it is windy outside, avoid opening the window or door that will simply blow the hot air back in.

Fans in upstairs windows

It is possible to take advantage of the naturally cooler air in the basement to maintain the more comfortable temperature throughout the home.

Invest in several of the larger box fans and place them in front of the windows on the top floor of the home. Make sure the fans are placed to blow the hot air out of the windows. Make sure to close the exterior doors and all other windows not in use, but the interior doors throughout the home should be left open going all the way down to the basement. The intention of this set up is to draw cooler air from the basement and spread it throughout the home and out the upper floor windows.

Window fan

Strength in numbers

A simple configuration of using plenty of window fans can go a long way to controlling the internal temperature.

This set up includes an equal number of fans blowing in and out. In the event of using an odd number of fans, make sure to configure the extra unit to blow air into the home.

The constant movement of air is very effective at controlling room temperature and helps to maintain a cool breeze.

This type of set up is great at creating a positive pressure in the home to discourage flying bugs and insects from coming inside the home.

Prime placement

The actual placement of the fans can have a significant impact on the ability to cool the home. For the best results, the fans that blow outwards should be placed on the sunny side of the property (south side), and the fans that blow inwards should be located on the shady sides of the home. This type of placement technique should apply no matter the number of floors the property has.

But, for the home with multiple floors, the fans placed on the upper floors should push the hot air out, while the fans at ground level are preferred for pulling the cooler air in.

The stack effect

The stack effect is another of the useful ways to cool a room in the home. Once sunset has passed in the evening, set up the fans at ground level to start bringing in the cool air, while letting the fans on the upper floors push out the build up of hot air. By the time the morning arrives, the rooms throughout the home should be quite cool. So, at this time remove the fans from the windows and close them.

Most modern homes include a good amount of insulation, which should have the ability to maintain the cool temperature in the home for several hours. This technique needs to be repeated each evening in order to maintain the cool and comfortable environment in the home.

Additionally, it is possible to place a window fan in the room that you want to lower the temperature. Make sure the fan is set to blow into the actual room. Use a second window fan on the other side of the home or apartment and set this to blow out. This setup has the potential to pull in a lot of cool air while at the same time pushing out the hot, stuffy air.

DIY air conditioner system: Build your own!

​Why you may need it

For those households that wish to keep the cost of cooling a particular room to a minimum and have basic do-it-yourself skills, there is the option to make a homemade air conditioner. This helps to skip the cost of running the expensive AC unit or investing in one or more freestanding or window fans.

Additionally, they aren’t that complicated to put together and provided you already have the tools, the cost of the individual parts is relatively inexpensive. It is even possible to build the DIY air conditioning system that runs on alternative energy such as solar power.

Items needed​ to build it

The items needed to build this cooling system are quite minimal and consist of the following items:

  • an ice chest (Styrofoam or hard-side),
  • small fan,
  • PVC pipe,
  • a piece of ice or reusable coolers.

The unit can be powered one of three ways:

  • a 12 V small battery,
  • a 12V socket in an automobile
  • or solar panel (solar panel setup is entirely optional).



Coleman 48-Quart Cooler

Lasko 2-Speed Clip Fan, 6-Inch

PVC Pipe Fitting, 4" Socket

Fit & Fresh Cool Coolers

Video​ instructions

One awesome cooling system has been uploaded to YouTube by user desertsun02, and available to view here. It includes easy instructions to build the homemade AC air cooling unit. Once put together this unit has the potential to produce the very cool and comfortable air (great for space cooling) in the region of 42° Fahrenheit (in an 80° Fahrenheit room).

This air cooling system is most practical for climates that are semi-dry or dry (dry air cools down a lot faster/easier than humid). Also, the size of the block of ice can have a significant impact on how long this system provides cool air. A standard size block offers about 5 hours of cool air while a large block has the potential to offer up to 10 hours.

Step-by-step instructions​

The YouTube video gives step-by-step instructions to build the air cooler system.

  • The first step is to size and cut the holes in the ice chest lid. This includes one small and one large hole to fit the fan and PVC pipe.
  • Once these two parts are in place the unit is basically built and ready to be used.
  • But, before activating the cooling system, it is necessary to place a block of ice (solid ice unenclosed is best, but 1 gallon bottles of frozen water still works) in the ice chest.
  • You can replace the ice with reusable coolers.

When the fan is running it has the capacity to give great air flow (the thermometer in the video shows a temperature of about 42° Fahrenheit) and the fan action is quite quiet to limit disturbing those nearby.

While the do-it-yourself AC unit is great at cooling a specific room, it isn’t a practical solution to cool the whole house.

In summary

So, for those with no air conditioning system at home, there are plenty of practical and low-cost solutions to make sure the living room or bedroom is kept cool and comfortable whenever you want to use it. Why not give the different methods a try to see which is able to give the most desirable results for your specific circumstances.

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