Arctic Heat Pump is a top quality and the most energy efficient air source heat pump for cold climates that is available on the market in North America. As one of the best air to water heat pumps- the Arctic Heat Pump is designed to quickly integrate with a solar thermal heater to offer the best heating solutions in a cost-effective way.please browse through this link: https://www.arcticheatpumps.com/air-source-heat-pump-with-solar.html!