I wuld suggest going wih a company with good reviews. I also recommend professional installation.
your car will overheat, there will be low pressure on your system.
In an unvented system, hot water can be at a higher pressure than the cold mains due to the presence of a pressure-reducing valve on the cold water supply. This valve controls the pressure of the cold water coming into the system, allowing the pressure of the hot water, which is heated and stored at a higher temperature, to be higher. Additionally, the expansion vessel in the system helps regulate pressure fluctuations by absorbing excess pressure from heating water.
If you seem to have unusually low pressure or if your pump is running a lot then you need the system checked by a professional. Not necessarily a plumber.
The purity of the lake water is questionable.You can tell the purity of your tap water by purchasing a home water testing kit.
A hot water heating systems water pressure should be 12-25 psi , the air in the expansion tank should be set around 10 psi but can only be accurately tested with no water pressure against it. Usually u can tell if the tank is bad when the relief valve on the boiler starts releasing water
look at the gauge
You can tell if there is a low pressure system by looking for indicators like cloudy and rainy weather, falling barometric pressure readings, and possibly strong winds. Low pressure systems typically bring unsettled weather conditions.
You can determine if water is running through a pipe in a closed system by checking for changes in pressure using a pressure gauge; a drop in pressure may indicate flow. Additionally, you can listen for sounds of flowing water or vibrations in the pipe. If there are temperature changes along the pipe, it could also suggest water movement. Lastly, observing flow indicators or flow meters, if installed, provides a direct measure of water movement.
That depends on the type of system. The higher line ones that display the pressure will, some of the lower lines will not.
To tell you how much air is in the air system.
taste it
do a coolant pressure test.