Need Load Calculations Experts in Metro Phoenix? Call us Today

Did you know that AC systems are commonly oversized in the Phoenix/Scottsdale area? Does your HVAC contractor know how to conduct a load calculation? Bottom line, it’s important your AC contractor knows what they are doing and isn’t looking to sell you something you don’t need at a higher cost.

AC Systems are Commonly Oversized

The majority of Arizona HVAC contractors out there will say they do a load calculation, but rarely do they recommend a different sized unit for fear of installing an AC unit that is too small. A bigger unit is more expensive upfront cost, and costs more to operate. We take HVAC design, sizing, and proper installation seriously to provide the best value to our customers.

Promote Cooling System Longevity

Oversized AC systems don’t run as long to reach the ideal home temperature, causing them to frequently cycle on and off. This cycling causes extra wear and tear on your AC system, and this often results in premature equipment failure. Also, an oversized system consumes more energy than is needed to keep your home cool.

Cooling system load calculation software

What is HVAC Manual J?

At Ideal Air Conditioning and Insulation, we KNOW insulation, and we know how a building works as a system, so we can precisely calculate the size of your AC unit with confidence! We conduct Manual J load calculations on every installation job to correctly size your HVAC equipment. Our AC system sizing and designs are based on sound estimates, not guesswork. We model your home accurately in the ACCA load calculation software, which is an important step many contractors skip.

Ideal Air Conditioning and Insulation: Proper HVAC Installations Every Time

From Phoenix to Chandler, Arizona, our dedication to quality is evident in every job we do. At Ideal Air Conditioning and Insulation, we believe in saving energy without compromising comfort. We want our customers to experience the best of both worlds: exceptional home comfort and low cooling bills.

Our technicians are skilled in all aspects of heating and cooling system design, and we follow ACCA guidelines for load calculations and system sizing. This is what sets us apart from other Phoenix HVAC contactors.

Want your next HVAC system sized by experts? Contact Ideal Air Conditioning and Insulation today to get started.


The formula for calculating load depends on the specific type of load you are referring to. Here are a few common formulas used for different types of load calculations:

  • Electrical Load (Power): The formula for calculating electrical load (in watts) is:
  • Load (Watts) = Voltage (Volts) × Current (Amperes)
  • Electrical Load (Energy): To calculate the energy consumed by an electrical load over a specific period, you can use the formula:
  • Energy (kWh) = Power (kW) × Time (hours)
  • Mechanical Load: The formula for calculating mechanical load, such as the load on a structure or a machine, varies depending on the specific application and engineering principles involved. It often involves considering factors like force, stress, weight, or torque specific to the situation.
  • Thermal Load: Thermal load calculations involve determining the amount of heat transfer required to heat or cool a space. The formulas for thermal load calculations can be complex and depend on various factors such as the size of the space, insulation levels, climate conditions, and desired temperature differentials.

It’s important to note that load calculations can be more complex in practice, and specific industries or applications may have their own specific formulas and considerations. Consulting with professionals in the respective fields, such as electrical engineers or HVAC specialists, is recommended for accurate load calculations.

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