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Old 02-16-2018, 06:16 PM   #29
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757driver's Avatar

Entegra Owners Club
Join Date: Jun 2004
Location: Cambridge, Ontario
Posts: 4,915
Originally Posted by Matt D View Post
Unfortunately, our 2017 Entegra has 2 Macerator toilets. These types of toilets use a lot of water, compared to the older foot pedal ball valve style in our last coach.

As a result, our black tank fills about twice as fast as our gray tank.

Boondocking in our coach requires being mindful of toilet usage. We always max out black before we have any issues with gray, or fresh.

Our Phaeton was good for about 5-6 days before the gray would fill.

Our Aspire is good for 2-3 days at the most before the Black is full.

One issue is the black tank in the Aspire is fairly small. I seem to recall itís around 41 Gal. By comparison, the gray tank is 62 Gal. and fresh is 100 Gal.

By volume, the black is clearly the smallest. The main issue is that for every toilet flush, there is a substantial amount of water in addition to waste going into the black.

This is such an issue in our coach, Iíve periodically contemplated simply combining both tanks to gain a day or two. I havenít yet done this, and really donít want to.

Frankly, one of two things would improve the situation. Either install a bigger black tank, or provide a toilet that uses less water per flush. I believe some coaches do have a gravity toilet in the mid bath. That is a good solution.


Two to three days before the black tank fills......ouch. I feel your pain.

For most Entegra models it was a wise move to increase the size of the gray tank capacity and decrease the size of the black tank capacity. However, designing bath and a half floor plans (or mid bath single toilet floor plan) where the toilet cannot be over the black tank and not need a macerate toilet is poor planning. Another example of where the designers need to live in what they design to see what does not work.
Don & Gerri
2014 Entegra Anthem 44B
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