Incorrect installation is a common problem. Other factors include switching off the mains and switching them back on again while keeping the taps closed. You may also have a faulty vacuum breaker
Install a spirovent
air in water lines usally accur when the water in turned off for some reason,just let the water run in a tub for 5 min. air in water lines that make your pipe rumble, you need air chamber installed. its called water hammer turn of all hot faucets and run till air stops coming out and steady stream of water comes out.
Cold water lines may have more insulation than hot water lines, otherwise they should both freeze unless there is some agent in the water.
This is probably a pressure imbalance problem or you have air in the lines. see the related video link provided.
== Answer== I don't think so, but get the air out of lines to make sure.
Steam heat normal Hot water perhaps air in lines and need to be purged
Hot air.
Usually blowing only hot air means the water is not covering the pads. This could be abad water pump, clogged pump inlet, low water level or clogged distribution lines where they drip water on the pads. It is possible the pads are also caked with mineral deposits and no air can get through. Take the cover off and see what the water is and is not doing.
Yes, a bad pressure tank can cause air to enter the water lines, leading to air bubbles in the water supply.
To remove air from Water lines you simply need to run the water for an extended period of time. Traditional tank type water heaters will hold air and the air must be gotten out especially if it is an electric unit. Go to any faucet (preferably one where you have a separate knob or lever for the hot and the cold) and turn it on full blast until you have a solid and consistent flow of water from both the hot and cold water lines. If the Water Heater has emptied you will need to run the Hot Water for a very extended period of time. The faucet(s) will do a lot of spitting and sputtering and making noise but this is normal and necessary. Hope this helps!
No. If you have hot water heat, you also have a separate air handler for the AC to circulate the air.
Install hammer arrestors at the highest point of the water lines.