16 pages

Tankless Descaling Interval by Water Hardness

Quick answer

Tankless Descaling Interval by Water Hardness: 16 pages. Manufacturers say annually and then say more often in hard water without defining hard. These pages fill that gap, and label the interval plainly as the planning convention it is.

3 gpg at 120 F At 3 grains per gallon (51 ppm) with a 120 F setpoint, descale a tankless water heater roughly every 24 months. Scale deposition r
3 gpg at 140 F At 3 grains per gallon (51 ppm) with a 140 F setpoint, descale a tankless water heater roughly every 18 months. Scale deposition r
5 gpg at 120 F At 5 grains per gallon (86 ppm) with a 120 F setpoint, descale a tankless water heater roughly every 18 months. Scale deposition r
5 gpg at 140 F At 5 grains per gallon (86 ppm) with a 140 F setpoint, descale a tankless water heater roughly every 14 months. Scale deposition r
7 gpg at 120 F At 7 grains per gallon (120 ppm) with a 120 F setpoint, descale a tankless water heater roughly every 18 months. Scale deposition
7 gpg at 140 F At 7 grains per gallon (120 ppm) with a 140 F setpoint, descale a tankless water heater roughly every 14 months. Scale deposition
10 gpg at 120 F At 10 grains per gallon (171 ppm) with a 120 F setpoint, descale a tankless water heater roughly every 12 months. Scale deposition
10 gpg at 140 F At 10 grains per gallon (171 ppm) with a 140 F setpoint, descale a tankless water heater roughly every 9 months. Scale deposition
12 gpg at 120 F At 12 grains per gallon (205 ppm) with a 120 F setpoint, descale a tankless water heater roughly every 9 months. Scale deposition
12 gpg at 140 F At 12 grains per gallon (205 ppm) with a 140 F setpoint, descale a tankless water heater roughly every 7 months. Scale deposition
15 gpg at 120 F At 15 grains per gallon (257 ppm) with a 120 F setpoint, descale a tankless water heater roughly every 9 months. Scale deposition
15 gpg at 140 F At 15 grains per gallon (257 ppm) with a 140 F setpoint, descale a tankless water heater roughly every 7 months. Scale deposition
20 gpg at 120 F At 20 grains per gallon (342 ppm) with a 120 F setpoint, descale a tankless water heater roughly every 6 months. Scale deposition
20 gpg at 140 F At 20 grains per gallon (342 ppm) with a 140 F setpoint, descale a tankless water heater roughly every 5 months. Scale deposition
25 gpg at 120 F At 25 grains per gallon (428 ppm) with a 120 F setpoint, descale a tankless water heater roughly every 4 months. Scale deposition
25 gpg at 140 F At 25 grains per gallon (428 ppm) with a 140 F setpoint, descale a tankless water heater roughly every 3 months. Scale deposition