Yes
You have air in your pipes and it needs to be flushed out.
Copper is used as hot water pipes because the copper will not corrode when the hot water goes through the pipes
Pipes can vibrate or rattle when hot water is flowing due to expansion of the pipes from the heat, causing them to rub against surrounding surfaces. This can be exacerbated if the pipes are not securely fastened in place. Additionally, air bubbles trapped in the water lines can create turbulence and vibration as water flows through the pipes.
Copper is used as hot water pipes because the copper will not corrode when the hot water goes through the pipes
Air in the pipes from a hole, break or crack somewhere along the line, or from a loose fitting or valve near or at the water heater; possibly caused by a mineral or debris- clogged filter screen at the faucet or discharge end.
If your hot water pipes are frozen, you may notice a lack of hot water coming out of the faucets. You can check for frozen pipes by feeling the pipes for cold spots or listening for unusual sounds when you turn on the hot water. If you suspect your hot water pipes are frozen, it's important to take action to thaw them to prevent damage.
install a air bleed valve at the highest point,
No this is not necessary. Install the pipes as per usual. You can insulate the hot water pipes up to two meters or up to two yards from the hot water outlet from the hot water tank to prevent this. No this is not necessary. Install the pipes as per usual. You can insulate the hot water pipes up to two meters or up to two yards from the hot water outlet from the hot water tank to prevent this.
Signs of air in water pipes include sputtering or spurting water from faucets, low water pressure, and gurgling noises in the pipes.
Air can accumulate in water pipes due to a variety of reasons, such as leaks in the system, changes in water pressure, or the presence of air pockets in the pipes.
You need to open all hot taps and allow all the water to run out and push the air out with it. It may take some time but it will eventually clear itself.
Yes, hot water pipes can freeze if the temperature drops low enough. The potential consequences of frozen hot water pipes include burst pipes, water damage, and loss of hot water supply. To prevent this, you can insulate the pipes, keep the heat on in your home, and allow faucets to drip during extremely cold weather.