Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

How close can an electric water heater and an electric furnace be to each other?

My water heater is 7 inches from my furnace. I need 4 inches so that I can install a water softener and wash sink. So I need to know if it is OK to move the water heater over by 4 inches, so that I can put them in.

share|improve this question
Have you checked with the furnace maker for clearance specifications? – mikes Jan 20 '14 at 21:08

Each appliance has a specification, available from the manufacturer, on various clearances. This number is sometimes zero, usually not, but never more than a few inches.

That said 3 inches between the furnace and water heater does not sound risky. Water heaters stay cool compared to furnaces: the clearance to the water softener may be the bigger deal. Your water softener counts as a 'combustible' surface.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.