A thermostatic expansion valve (TXV) is designed to maintain a specific amount of superheat at the outlet of the evaporator. If the superheat value is too high or too low, the TXV may be the cause.

The thermostatic expansion valve (TEV or TXV) is erroneously considered by some to be a mysterious and complex device. As a result, many valves are needlessly replaced when the cause of the system ...

Q I am thinking of putting a multi-fuel stove into the existing fireplace of a Victorian cottage. While it is preferable to put in a flue liner, do Building Regs require the flue to be lined in these ...