Proper heating and load calculations are crucial to HVAC system design. Home comfort, construction costs, air quality and many other factors are directly affected by these calculations, so use these simple tips to make sure the HVAC experts you’ve employed are following proper calculation guidelines.
Code requirements, home requirements and gas prices have changed over the years, but the old rules of thumb have not. Using oversimplified rules like this can be a major mistake that makes your load calculations inaccurate from the get-go, so be sure this isn’t happening.
The load calculation’s accuracy will depend on getting as much of the necessary information correct as possible. Many factors will be considered by the expert, such as the home’s geographic location, orientation to the sun and duct leakage, as well as lights and appliances that emit heat, among others.
To determine a home’s energy efficiency, a qualified pro can perform a blower door test to determine the rate of air infiltration in the home and camera probes are great for looking into hard-to-reach areas to determine insulation levels.
Manual J will be absolutely necessary throughout the calculation process. Manual D is vital for determining proper air distribution and ductwork. Other manuals (S and T) may also be necessary to complete an accurate estimate. A professional should always keep these tools close by.
The individual systems within your home are interdependent, so making a change to building components, design conditions or ductwork can cause significant changes within the home.
Oversized HVAC units can lead to several problems, such as higher operation costs, occupant discomfort, frequent temperature adjustments and an inadequate amount of moisture removal from the air indoors. To be most effective, systems must run as long as possible to meet load requirements. Sizing the HVAC system to the needs of the home is of utmost importance for long equipment life, consistent comfort and maximized energy usage.
For more information about load calculations, contact the Rheem Pro Partner. We proudly serve the home comfort needs of homeowners in and around Denver, Colorado Springs and Northern Colorado, as well as Cheyenne and Casper, Wyoming.
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