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ReTherm FAQ

1
Does ReTherm have to be installed vertically? Can it be installed on the horizontal?
  Installing the ReTherm unit vertically is the only way to obtain the highest level of heat recovery. Having the unit installed horizontally will only deliver 1/5th of the heat recovery compared to the vertical install.
2
How much electrical power does ReTherm require? 
  None. No electrical hook-up is needed. Our drain water heat exchangers do not require any electricity to recycle hot water heat.
3
How long does it take to complete a typical household installation? 
 

New Construction - Installing ReTherm as the home is being built requires 1-2 man hours.

Retrofit - Installing ReTherm into an existing home typically requires 4-6 man hours.

4
Can ReTherm be used to collect the heat from my hot water baseboard radiator piping?
  No. The hot water that flows through the baseboards, radiators or through the in-floor heating pipes is never thrown away. It is a "closed-loop" pipe system that reuses the same water day after day, year after year.
5
Can ReTherm be installed as a do-it-yourself project in a home?
  Yes. The skills and knowledge required to properly install a ReTherm unit are basic. Many DIYers have completed their own ReTherm install.
6
Will ReTherm cause any problems for my private septic tank? Will it prevent it from working properly?
  No. Contrary to common perception septic tanks do not require any warm or hot water in order to function normally.
7
How long is a ReTherm unit expected to last?
  Since ReTherm units have no moving parts and are built entirely of durable copper the lifecycle is expected to be 40 years plus.
8
Will ReTherm be more effective if it is insulated?
  If the unit is installed in an area that is unheated or is normally less than room temperature then we recommend that the unit be insulated. However, if the unit is installed in an area that is maintained at room temperature insulating the unit is optional.
9
Is hard water a problem for ReTherm?
  No. Minerals in water can leave deposits when heated to high temperatures. Unlike boilers and other water heaters the temperature boost delivered by a ReTherm unit is not high enough to cause mineral build-ups on the surfaces of the unit.
10
Should the water pipe between the ReTherm unit and the water heater be insulated to prevent heat loss?
  Yes, this is recommended especially if the water lines are copper. If the water lines are plastic the heat loss from un-insulated pipes will be negligible since plastic is such a poor conductor of heat.
11
Can ReTherm heat all of my hot water?
  Although larger ReTherm units can recycle more than 60% of the heat from the shower they cannot replace the need for some type of "powered" water heater. ReTherm works with conventional "powered" water heaters. It cannot replace a powered water heater because it cannot heat water totally, it can only preheat water using the heat that is available from drain water.
   
ReTherm heat recovery just makes sense

ReTherm heat recycling goes by several names: hot water heat recycling,
drain water heat recovery, grey water heat recovery, waste water heat recovery & shower water heat recovery.

ReTherm stops the #1 waste of household energy
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