What Size Air Conditioner For A 14×70 Mobile Home

What Size Air Conditioner For A 14x70 Mobile Home

What Size Air Conditioner For A 14×70 Mobile Home?

Choosing the right size air conditioner for a 14×70 mobile home is crucial for maintaining a comfortable indoor environment and optimizing energy efficiency. Here’s a comprehensive guide to help you determine the appropriate size:

Factors to Consider

  • Square footage: A 14×70 mobile home has an area of 980 square feet.
  • Climate zone: Different climate zones have varying heat loads, so it’s important to consider the location of your mobile home.
  • Insulation: Proper insulation reduces heat gain and heat loss, affecting the cooling load.
  • Number of occupants: More occupants generate more heat, increasing the cooling requirement.
  • Appliances and electronics: Appliances, such as refrigerators, ovens, and computers, also generate heat that must be accounted for.
  • Windows and doors: The number and size of windows and doors allow heat to enter or escape, influencing the cooling load.

Calculating Cooling Capacity

To calculate the cooling capacity required for your 14×70 mobile home, follow these steps:

  1. Determine the square footage: 14 feet (width) x 70 feet (length) = 980 square feet.
  2. Identify the climate zone: Refer to the map of climate zones provided by the Air Conditioning Contractors of America (ACCA).
  3. Use the Cooling Load Calculator: The ACCA provides an online calculator that considers a variety of factors to estimate the cooling load.

Recommended Air Conditioner Size

Based on the calculated cooling load, the recommended air conditioner size for a 14×70 mobile home in most climate zones is 3 tons (36,000 BTUs). This size will provide adequate cooling capacity to maintain a comfortable indoor temperature during hot weather conditions.

Examples and Illustrations

  • For a well-insulated 14×70 mobile home in a moderate climate zone with few occupants and appliances, a 2.5-ton (30,000 BTU) air conditioner may suffice.
  • In a poorly insulated mobile home in a hot climate zone with multiple occupants and appliances, a 4-ton (48,000 BTU) air conditioner may be necessary.

Additional Information

Energy Efficiency Ratio (EER)Measures the efficiency of an air conditioner; the higher the EER, the more efficient the unit.
Seasonal Energy Efficiency Ratio (SEER)Similar to EER, but considers the cooling season only; a higher SEER indicates better efficiency.
Refrigerant TypeR-410A is an environmentally friendly refrigerant commonly used in modern air conditioners.
WarrantyMost air conditioners come with a manufacturer’s warranty, typically ranging from 5 to 10 years.

Interesting Facts

  • The recommended air conditioner size for a 14×70 mobile home is larger than that for a similarly sized stick-built home due to less insulation.
  • Undersized air conditioners run constantly, increasing energy consumption and reducing lifespan.
  • Oversized air conditioners cycle on and off too frequently, reducing dehumidification and causing temperature fluctuations.
  • Proper air conditioner sizing can improve indoor air quality by removing excess moisture and preventing mold growth.
  • Regular maintenance and cleaning of your air conditioner will extend its lifespan and ensure optimal cooling performance.


  1. What happens if I install an undersized air conditioner? Undersized air conditioners will struggle to cool the space adequately, leading to discomfort and increased energy bills.
  2. What are the benefits of a higher EER/SEER rating? Higher EER/SEER ratings indicate more efficient air conditioners, resulting in lower energy consumption and operating costs.
  3. Why is it important to consider insulation? Good insulation reduces heat transfer, lowering the cooling load and making the air conditioner more efficient.
  4. How often should I service my air conditioner? Annual maintenance is recommended to ensure proper operation, extend lifespan, and optimize energy efficiency.
  5. Can I use a window air conditioner to cool my 14×70 mobile home? While window air conditioners can provide spot cooling, they are not suitable for cooling an entire 14×70 mobile home effectively.
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