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Free Webinar: Optimizing Residential Forced-Air HVAC Systems: Load Calculations, Equipment Selection, October 31, 9am-12pm PT
Event Description
Improved design, installation and commissioning practices lead to a dramatic improvement in building energy consumption, indoor air quality, and comfort. There are six performance factors that can be applied to HVAC design, installation and/or commissioning. In the Optimizing Residential Forced-Air series, we will review how each factor can be specified at design, implemented during installation, and tested/adjusted during commissioning. We will also look at how we can redesign our approach to high performance HVAC systems to support California (and beyond!) climate goals, help manage the peak electrical load on the grid as well as the owners operating cost under the time-of-use billing structure.
The Optimizing Residential Forced-Air series is informed through commissioned systems, where real examples from completed projects are used to support class content. Dan Perunko of Balance Point Home Performance has designed, built, and commissioned both retrofit and new construction projects that exemplify the concepts covered in class. Course content will include design examples, photos installations, and test results from commissioning.
The HVAC equipment, materials and knowledge required to dramatically improve the performance of HVAC systems is readily available. This class will assist the designer, installer, and rater in their efforts to improve the HVAC systems we build.
The objective of this course is that at the conclusion, participants will be able to:
- Describe a load calculation and ideal equipment choices given a typical California building load
- Cite the benefits of small heat pump systems
- Identify some of the challenges we face when laying out a duct system
- Summarize the criteria for building safe and efficient refrigerant plumbing
- Outline the process for building testing a refrigerant line set
- List the charge adjustment techniques required for different heat pumps
- Discuss an alternative option for high efficiency, high airflow gas heat that is appropriate for California
Image: Francis Plumbing
Introduction and safety message
System Capacity
How much capacity do we need
Should we use a heat pump
Mini-split VS conventional
If you do use gas for heat what system is best
How do we design so our customers can shift to time of use billing without negative consequences
What is a load calculation and what do they tell us
Do we pick the same equipment type regardless of the load
Zoning strategies for high efficiency buildings
System Airflow
System capacity defines duct size
What will fit in a given building
Large ducts lead to losses and complexity issues
Small ducts lead to low airflow and performance issues
Layout strategies for high airflow systems
Refrigerant Charge
Line set building and preparation
Nitrogen pressure testing
Vacuum testing
Charge adjustment – super heat, sub cool, weigh in
Dan Perunko is cofounder of Balance Point Home Performance Company. In 2006, along with Gavin Healy, Dan started a successful company providing full service home performance analysis, retrofits, consultations, and trainings. Dan works on new and existing construction designs and hands on installations of enclosures, mechanical, plumbing, and indoor air quality components based on tested performance outcomes. Dan especially enjoys improving existing homes to provide homeowners with levels of comfort and energy consumption that they have not believed possible. Dan is a professional trainer who designs and delivers full and multi day courses for California’s Utility Companies (energy training centers) and ACI national and regional conferences.
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