More and more attention had been taken for ECO green and energy saving product with low GWP. Because of that, we got more inquire about the R290 heat pumps. Then what is R290, and is there any d...
Answer: All heating products make some noise, but heat pumps are usually quieter than fossil fuel boilers. A ground source heat pump may reach 42 decibels, and an air source heat pump may reach 40...