The following series of videos are from a LEEP heat pump workshop that examines a case study home in Burnaby, BC. The presenters walk through a design approach that uses best practices to accurately size a heat pump system in a retrofit application. Although many HVAC contractors make estimates on equipment sizing based on past experience and simple calculations of a certain number of BTUH per square foot of a building, the more sophisticated method of modeling and measuring critical design data will result in a more efficient and cost effective installation on some projects.
This video discusses the use of CSA F280 for calculating the heat loss & heat gain of a building. It highlights how accurate calculations assists with correctly sizing HVAC equipment, as oversizing heat pumps can cause cascading problems throughout the design process.
This presentation discusses how design decisions can facilitate or even avoid an electrical service upgrade during a renovation. Careful electrical load analysis by a professional, as outlined in the CEC is a powerful tool. In some cases, a demonstrated load might be the right solution for avoiding an unnecessary electrical upgrade.
This video discusses different control strategies for a dual fuel system and how the selection of a balance point impacts the performance and cost of a heating and cooling system. Understanding the economics and the priorities of a client are critical to making informed decisions on control schemes.
NRCan has produced a free air source heat pump sizing & selection tool. Jérémie provides an introduction on how this powerful tool can be used to compare and select heat pumps for a specific project, providing better systems at more competitive process.