October 2026 Technical Meeting
October 21, 2026
11:30 AM - 1:00 PM
Add to Calendar
Renaissance Hotel - The Fig & The Judge
515 Madison St.
Seattle, WA 98104
Venue website
Directions
*Joint meeting between the ASPE Seattle and ASHRAE Puget Sound Chapters
Topic: Designing Central Heat Pump Water Heating Systems: Sizing, Storage, Controls and Commissioning
-
Explanation of System Architecture
-
Separating Demand from Recovery
-
Using Storage Intentionally
-
Designing for Reliability
-
Planning Controls and Sensing
- Verifying Performance
Session Summary: This session provides an overview of the key design considerations for central heat pump water heating systems, including sizing, storage, controls, and commissioning. Participants will see how building loads and recovery requirements inform equipment selection, and how modular staging and redundancy support reliable operation. The session will also address equipment placement, system monitoring, and practices that help reduce field variability during installation and startup.
Speaker: Albert Rooks and Tom Murgatroyd
Speaker Bios:
Albert Rooks is an entrepreneur and industry leader with more than 25 years of experience bringing sustainable, energy-efficient products and construction solutions to the North American market. His work has focused on expanding access to technologies that improve building performance and support a lower-energy future. Albert’s areas of expertise include high-performance building envelopes, Passive House construction, and central heat pump water heating. As the founder of WaterDrop Systems, he helped introduce North America’s first fully packaged central heat pump water heater for multifamily domestic hot water applications. He has also held long-standing leadership roles in organizations supporting Passive House education and building certification. Albert also serves as a Provisional Corresponding Member on ASHRAE Technical Committee 6.9 (Thermal Storage).
Tom Murgatroyd is a mechanical engineer at Dynamic H2O, where he supports core product development, production, and customer applications. He has worked in the heat pump water heater industry since earning his Bachelor of Science in Mechanical Engineering, cum laude, from Washington State University in 2019.
Meal Selections:
VEGAN COBB SALAD - Spring Mix, Cucumbers, Cherry Tomatoes, Crispy Garbanzo beans, Red Onions, Sweet Potato, Avocado, Pepitas, Shaved Cauliflower, Toasted Cumin Vinaigrette.
GARDEN FRESH RIGATONI (V) - Zucchini, yellow squash, red onion, garlic, mixed bell pepper, cherry tomato, spinach, basil.
QUESADILLAS - Cheddar jack, bell peppers, pickled onions, guacamole, salsa, sour cream, cilantro, Nacho Chips.
GRILLED CHICKEN SANDWICH - Arugula, Mama Lil’s, grilled squash, Basil aioli, Swiss, Mama Lil peppers served with Fries.
WAGYU BURGER - Cheddar, bacon, lettuce, tomato, onion, kosher pickle, special sauce, brioche bun served with Fries.
Parking: Validated at reduced rate of $17.00 in lobby for Renaissance Hotel Parking Garage
Tickets
$40.00 Member Registration (credit card)
$40.00 Non-Member Registration (credit card)
Tickets
$40.00 Member Registration (credit card)
$40.00 Non-Member Registration (credit card)
$40.00 Non-Member Registration (credit card)
