rough order of magnitude (ROM) Definition. An estimate of costs and time provided in the early stages of a project when its scope and requirements has not been fully defined. An ROM is used to reduce the uncertainty of cost outcomes for both parties when project details have yet to be identified. Use this term in a sentence.
Prior To Fitting Your Wickes Water Softener. The water softener must be installed inside a plastic water tank, this tank should then be you may hear a hissing noise as the water rushes through the valve. Once the hissing noise has stopped, open the outlet valve and run some water.
Become familiar with the controls on your water heater. Popping noises in gas and electric water heaters are the result of mineral deposits that build up in the tank. As the water heats up, steam is produced at the deposits and makes popping noises when it releases. In-line water filters remove a lot of the minerals in hard water.