What Size Window Ac Do I Need

Getting the right size of air conditioner is super important.

The size and power of your window air conditioner should exist based on the area of your room, height of the ceilings, and account for other factors (amount of sunlight, people in room, etc). You lot tin rapidly go the right window AC size and power with this guide and calculator beneath.

Since it's important to get correct, I've put together a visual guide to sizing a window air conditioner. I promise it helps!

Our handy size calculator is beneath, as well.

How to Size A Window Air Conditioner

Don't have a pen and paper handy? No problem.

I've put together a figurer that will do all the hard work for you.

Simply input your factors and information technology'll give you an thought of the BTU you need.

I hope that's helped give you lot an thought of what size window AC to await for.

Notwithstanding not confident? Don't worry.

There's a total guide and other sections below.

Use the Table of Contents to skip ahead, or read on and we'll walk through it together.

Looking for a quiet window air conditioner? Our guide covers the quietest models available.

Step by Footstep: Sizing A Window Air Conditioner

Why is Sizing Important?

Following this guide will save you lot money.

'How? At the end of the day I'm still going to buy a window air conditioner!'

Truthful – but the initial cost yous pay isn't what I hateful. It's in your energy bills.

It'due south obvious that too pocket-sized of an air conditioner will price yous more than money. It'll be sucking upward all your electricity as information technology struggles to run on maximum all day long. Not to mention the constant WHIRRR you'd demand to put up with!

Only did y'all know that too big of an air conditioner volition also increase your bills?

Granted, a large air conditioner will exist on economy mode a lot. Only the issue is that it's e'er switching on and off. Quickly on, and so cooling so quickly it switches back off over again. This on/off bike is what uses a ton of energy to start up the whole system.

Air conditioners are made to maintain a depression temperature, and cost the most when they starting time switch on. So likewise large of an air conditioner volition cost more than to run.

Not to mention the extra vesture and tear on the compressor from always switching on and off. And the CLUNK noise that happens every time!

Lastly, a large model can absurd too quickly. So fast that the dehumidifier can't go along upward, and we're left feeling common cold but humid. Which is extra uncomfortable.

Too big or small an air conditioner will raise your bills. It's important to go the window air conditioner size right.

It's important to size a window air conditioner correctly.

Thankfully, sizing a window air conditioner is super elementary.

Just follow these simple sections to find a power level tailored to your home.

Notice Your Baseline Expanse

Just like in the infographic, our start step is to figure out the baseline level of BTU your space needs. This is simply based on the area of the room you'll put the air conditioner in.

To discover the area, just multiply the length x width of a square or rectangular room. If it's triangular with a right-angled corner, then one-half that first number – since a triangle is simply half of a rectangle.

If it's more complex than that, y'all'll demand to accept some initiative! Split the room up into smaller sections and piece of work each out separately. So add them all together. In that location's a pocket-size diagram on the infographic which should give you a good starting indicate.

Call up: This doesn't demand to be verbal! We're just finding a baseline to commencement with.

Observe your Baseline BTU

Once we accept an area to work with, it's simple to get an equivalent size or ability of air conditioner. Simply compare to the table below. For a good sanity bank check, multiply your surface area in sq. ft. by 25 – this likewise gives a rough idea of the amount of BTU we demand.

BTU Required for Window Air Conditioner

Account for Factors

At present that nosotros take the basic ability requirement, it's fourth dimension to match it to your space.

For each of the following statements that apply, you should add together the equivalent factor.

Factors for Sizing Window Air Conditioner

That'southward nearly all there is to it!

Unproblematic, correct?

With your terminal number, look back at that initial chart comparing areas and BTU to a higher place. If you lot're stuck in the middle of ii categories, I'd recommend going slightly stronger.

Make up one's mind on Your Features

We're so fortunate with appliances today. We can cull from older and cheaper models which can all the same work fantastically well (if you buy the good ones). At the same time, there are too modernistic models with amazing, time-saving features.

Hither's some of the well-nigh pop features – with a flake more item than in the infographic above.

Notation downward which of these would make your life easier. Then you can check the ac units y'all're considering to see if they accept the features you need.

Window Air Conditioner Features

Window Air Conditioner Features.

Personally, I'm a huge fan of slumber modes and simple off-timers.

Window vs Portable Air Conditioners

For those who need 1 room cooling – particularly renters or those in small apartments – in that location's e'er a question betwixt window and portable air conditioners. Allow'due south discuss that.

Both types are excellent at cooling a unmarried room. Both are likewise easy to set upward (with portable beingness super easy). But which is all-time?

Since there are many factors to compare, allow's walk through them 1 by one.

Comparison Portable vs Window Air Conditioners

We looked at how much square human foot each type can absurd for 8k, 10k, 12k, and 14k BTU models. In full general, window air conditioners are more than efficient per BTU than portable air conditioners. They cool a larger area for the same power level.
Once again we compared decibel ratings per BTU level. In general, window air conditioners were noisier than portable air conditioners for each BTU. This may be because the portable models have more than exterior to soundproof the arrangement.
Across the board, window air conditioners are more than expensive per BTU than portable air conditioners. We take this as evening out the efficiency difference. For case, a 12k BTU portable might cost the aforementioned as a 10k BTU window – both giving the same amount of cooling. Roughly, the $ per actual cooling is the same.
Portable air conditioners are a big improver to a room, especially in a small apartment. However, window air conditioners also block out most a foot of your window space! I call this virtually an even level of hassle.
Allow'south confront it – window air conditioner's own't pretty. They're bulky, boxy, and about wait similar they're from the 80'south. (Though recent models practise await much amend). Portable air conditioners, while big, do look good – and fit in as function of a modern home.
While a window air conditioners are super easy to set up, there'due south no comparison to the 'plug and play' installation of a portable air conditioning with the right sized window.

Note: The above are conclusions drawn from our researched comparison betwixt portable and window units . The total guide includes more details comparing these ii popular types of air conditioners.

Sometimes, the all-time way to compare ii things is to simply weigh upwardly their pros and cons.

Pros	Cons
Portable Air Conditioners
Easy to Install - Fix-up is but a quick prune-on window frame.	Generally Pricier - Come across the tabular array after in this post.
Bang-up Looks- Gimmicky designs on contempo models tin can make a room feel more modern.	Mostly Louder - As higher up.
Highly Mobile - They do need a flake of a push, but these units are easy to movement between rooms.	Less Efficient- The cause of the in a higher place two points. Typically crave higher power for the same size of room.
Convenient Placement Can be tucked away towards a corner or backside a couch, out of view.
Window Air Conditioners
Placidity - Run across the table later in this mail.	Try to Install- Oftentimes weighing over 50lbs, they're non easy to deeply mount onto a window frame.
Efficient - Equally in a higher place.	Not Like shooting fish in a barrel to Motion - Once you lot've done the installation in one case, you lot probably won't be in a bustle to do information technology over again!
Generally cheaper - As to a higher place.	Looks Bad/Blocks Window - There's no option but to have a big chunk of your window view (and calorie-free) blocked by the air conditioner.
	Needs Permission - If you lot don't own your property, yous may be at the mercy of the landlord/building owner regarding if you can install one or not.

Window Air Conditioner Best Practices

Before you run off and option up a perfectly sized window air conditioner, I want to leave you with a few tips.

By using your air conditioner properly, you lot'll:

Get the most cooling out of it
Extend its lifespan
Keep it quieter
Keep your air cleaner
Relieve on energy bills

Do those sound good? Well let's fine out how to become them!

The boring one kickoff. Whenever yous bring it out of storage, give the window air conditioning a good cleaning. Then but clean or replace the filter every month. This is by far the well-nigh of import action to go along it running better, quieter, and longer.
Pre-Program. If you lot're lucky enough to have a programmable unit, use it! Prepare it to turn on thirty minutes before you get home. This is MUCH better for the Air-conditioning than being cranked up to max and forgotten about. Let it cool the room downward gently. This has a huge bonus of the relaxing "aahh" feeling as y'all make it home.
Avert Sunlight. Many people don't consider this – only it's a huge deal. Will your window air conditioner be in the sun during the twenty-four hours? If so, yous're basically lighting information technology on fire and request it to put itself out. Endeavour to make certain it'due south in the most shaded window in the room.
Make certain the Ac has plenty of free air around information technology. Being covered by defunction or stuck behind cover screws things up in two ways. Outset, the cold air isn't getting into your room properly. Second, existence surrounded past cold air will throw off the air conditioner'due south thermostat.
Turn it up to keep it down. Equally in, turn upward your thermostat slightly. Nosotros want the air conditioner to be able to maintain a temperature on low/medium power. Even just bumping up the thermostat by 1 or 2 degrees can salve you ten% on running costs (non to mention article of clothing and tear).

Through-The-Wall Models

If yous're stuck for window space, did you know at that place's "through the wall" way models? While whatever window unit can be roughly fitted into a cutting-out into a wall, some models are specially made for this.

They're a bit longer, and have a more protective outside which is easier to fit into a wall cut-out.

They are likewise slightly more effective, since less cool air is lost through the low insulation of a window.

If yous're considering 1, make certain to get some skilful installation to put it in. And to make certain the location and production is what you lot want!

While these models are keen, I'd strongly recommend because a ductless organization instead. Instead of a big cutting-out, these only require a ane or 2 inch drilled hole and a mounted subclass.

Wrap Up

The power of a window air conditioner frequently isn't given much thought. Simply it'due south important.

Merely similar goldilocks, we want the size to exist just right. Also much or likewise trivial ability can atomic number 82 to (or catalyse) problems downwardly the line.

I hope this quick guide has helped you become the exact correct air conditioner for your space.

If you're still confused, feel free to get in touch via our contact page. We'll provide a custom recommendation for y'all if yous allow us know your room dimensions and factors.

Our goal hither is to make this website a fantastic, costless resource for anybody with questions near habitation and appliances. If this quick guide has helped you please consider supporting us by checking out some of our related articles! Or just past letting us know we've helped you today 🙂

Thanks and then much for reading. I hope you have a great day!