What Size Air Conditioner For 700 Square Feet

Okay, so you're thinking about getting an air conditioner for a 700 square foot space. Maybe it's a cozy apartment, a sunny home office, or even a converted garage. Let's figure out what size AC unit you need, and I promise, it's way less intimidating than filing your taxes (which, let's be honest, is saying something!).
Why Size Matters (and Why You Should Care!)
Imagine trying to wear your little niece's tiny sweater to a winter football game. You'd be shivering, right? That's what happens when your AC is too small – it works overtime, never quite cools the space, and your electricity bill skyrockets. On the flip side, imagine wearing a huge, puffy parka to a summer picnic. You'd be sweating buckets! An AC that's too big chills the room too quickly, then shuts off, leading to humidity and uneven temperatures. Plus, it also wastes energy.
Think of it like Goldilocks and the Three Bears: you want the AC that's just right. Not too big, not too small, but perfectly suited for your 700 square feet.
Must Read
The Magic Number: BTUs
BTU stands for British Thermal Unit. Don't let that scare you! It's simply a measure of how much heat an air conditioner can remove from a room per hour. As a general rule of thumb, you need about 20 BTUs per square foot.
So, for 700 square feet, we do a little math (don't worry, I'll hold your hand): 700 x 20 = 14,000. That means you're looking for an air conditioner with around 14,000 BTUs.
:max_bytes(150000):strip_icc()/air-conditioning-chart-1152654_final-02-c37c8b4fdf08432baf378e8f0cb9d8e0.jpg)
Now, before you rush out to buy one, hold on a second. There are a few more things to consider.
Factors That Can Throw Off the Math
That 20 BTU per square foot rule is a great starting point, but real life is rarely that simple. Think of it like baking a cake – you can have a great recipe, but a wonky oven can still mess things up. Here's what can affect your AC needs:

- Sun Exposure: Is your room bathed in sunshine all day? Like, does it feel like you're living inside a solar oven? If so, you'll need more BTUs. Add around 10% if your room gets a lot of direct sunlight.
- Insulation: A well-insulated room keeps heat out (and cool air in!). If your insulation is lacking (think drafty windows and thin walls), you might need a slightly larger AC.
- Ceiling Height: Got soaring ceilings that make you feel like you're living in a castle? All that extra space means more air to cool. If your ceilings are higher than 8 feet, you might need a little extra cooling power.
- Number of People: Are you chilling solo, or do you regularly host lively gatherings? More people means more body heat, so factor that in. Each person adds roughly 600 BTUs.
- Heat-Generating Appliances: Is your space packed with computers, servers, or other heat-producing gadgets? These can significantly impact the cooling load. Add about 400 BTUs for each major heat-generating appliance.
Let's say your 700 square foot home office gets a ton of sunlight and you have two computers running all day. You'd probably want to bump up your BTU requirement. We would estimate it to be closer to 15,000 to 16,000 BTUs.
Window, Portable, or Central?
Okay, you know the BTU range you're aiming for. Now, what type of AC should you get? Here's a quick rundown:

- Window AC: Typically the most affordable option. Easy to install (usually), but can be noisy and block your view.
- Portable AC: Easy to move around, which is great if you want to cool different rooms. They require venting to the outside (usually through a window).
- Central AC: The most powerful and efficient option, but also the most expensive. Requires professional installation.
For a 700 square foot space, a window or portable AC unit will likely be sufficient. A central AC might be overkill unless you're cooling a much larger area.
Don't Sweat It (Too Much!)
Choosing the right size AC can feel overwhelming, but it doesn't have to be. Use the 20 BTU per square foot rule as a starting point, consider the factors that might affect your cooling needs, and choose the type of AC that best fits your budget and lifestyle. And if you're still unsure, don't hesitate to consult with an HVAC professional. They can assess your space and provide personalized recommendations.
Now go forth and find your perfect, cooling companion! You deserve to be comfortable in your 700 square foot oasis.
