What if my heat pump is older and doesn't have a digital interface?

Good news, Alva Link has a trick for this. For older heat pumps that only respond to an outdoor temperature sensor, Link can act as that sensor. By adjusting the temperature reading it sends to the heat pump, it gently steers the heat pump's own built-in logic toward more efficient behavior. Pre-heating during cheap electricity hours and coasting through expensive ones.

No wiring into the heat pump's control board. No compatibility headaches. If your heat pump has an outdoor sensor input, Alva Link can work with it.

This is a meaningful difference from solutions that require specific bus protocols or brand-by-brand adapters. We designed Link to meet heat pumps where they are — even the ones that were installed before "smart" was part of the conversation.