If defrost isn’t working, something in the chain is broken. This step-by-step approach shows you exactly where to look and what to test.

If you’re starting to ask the question, it’s usually a sign that exploring options now can make future decisions calmer and ...

US startup TerraVis Energy is developing a residential heat pump that it claims can maintain high comfort levels without requiring defrosting. “The system is based on our soon-to-be patented ...

UK-based researchers have developed a novel method to estimate the amount of defrost cycles a heat pump will experience in the winter and how much energy it would require to implement the cycles. The ...

In order to service and troubleshoot an air-source heat pump system, a service technician must understand the unit's sequence of operation. This is the order of events the system undergoes to cycle ...

There is no competition at -50°F," said Lorenzo Rossi, CEO of Terravis Energy. "Currently, heat pumps can be extremely inefficient during cold weather, having to rely on supplementary heat sources ...