What Size Air Conditioner is Needed for a 14×70 Mobile Home?

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Updated September 9, 2022

If you are new to the world of indoor cooling, you may wonder what size air conditioner is needed for a 14×70 mobile home. Some of the best air conditioners, after all, are perfect for RVs, campers, and mobile homes. What is the best size AC unit for your mobile home, and how do you find this information? Keep reading.


  • Generally speaking, a 14×70 living space requires a 1.5-ton air conditioner with 12,000 BTUs of cooling power.
  • You may want to exceed this recommendation if you live in an exceptionally hot and humid part of the country.
  • There may be some unique energy and size demands if you are going for window air conditioners or adding a heating element.

Sizing Out AC Units for a 14×70 Mobile Home

Similar to answering the question of what size central air conditioner to purchase, it truly depends on how much cooling power you are looking for, among other factors. In most cases, a 12,000 BTU air conditioner of 1.5 tons will service a 14×70 mobile home, but this may cause some to wonder how big of a generator they need to run a powerful AC.

Insider Tip

Change out the air filters as recommended to ensure that your mobile home AC unit operates efficiently.

BTU stands for British Thermal Unit and refers to cooling power, if you are wondering what is a SACC air conditioner. After finding the right AC for your mobile home, remember to learn what size air conditioner filter you need.

Factors That Influence Mobile Home AC Size

While a 1.5-ton AC unit that cools 12,000 BTUs of air is adequate for a 14×70 mobile home in most cases, some factors could increase your AC energy consumption demands.


If you live in an exceptionally hot and humid climate, such as Arizona or southern Florida, you may need to add 1,000 BTUs or so to successfully cool your entire mobile home. Talk to an AC installation pro to pick their brain about whether or not you need to amp up the size of your air conditioner to account for long bouts of dry heat.

AC Type

Your cooling needs will differ slightly depending on the type. For instance, if you install multiple window units, you may need to extend beyond 12,000 BTUs combined to account for bathrooms and out-of-the-way parts of your home that have no access to windows. Central AC units, on the other hand, may offer a slight uptick in efficiency, allowing you to adhere to that 12,000 BTUs recommendation.


If you are going for an all-in-one HVAC system with an integrated heat pump, this could alter your energy demands regarding cooling. Talk to your installation pro for more details.

STAT: Energy Star is a nationally recognized, voluntary labeling program designed to identify and promote energy-efficient homes, buildings, and products to consumers and business owners across the United States. (source)

Mobile Home AC Size FAQs

What size window air conditioner for a 16x80 mobile home?

Due to the increased number of square feet here, you'll need a 1.76-ton AC unit that cools 15,000 BTUs. The increased square footage here translates to increased energy needs for any window units or central AC units.

How much will I spend?

It really depends on what you go for. Window units are the cheapest option, but this kind of air unit adds up over time. Central air units with dedicated evaporator coils are pricier but last longer on those hot summer days.

How old is your mobile home?

If your home is exceptionally old, it may require a boost in AC power. For an energy-efficient system, consider adding an air handler, a heat pump, or a package unit.
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