
SpaceSaver Overview
Key Takeaways
- The SpaceSaver composting toilet is compact, ideal for tight spaces with a width of 19 1/2″ and depth of 23″.
- It operates on 110v power, featuring a heating element and fan for effective odorless operation.
- It accommodates 1 adult for continuous use, or up to 3 adults for seasonal use.
- The toilet’s details include a weight of 43 lbs and dimensions of 30″ height, 19 1/2″ width, and 23″ length.
- Proper venting is required, using 2″ thin-wall PVC for vent pipes and 1” OD for drains.
The SpaceSaver composting toilet is a three chamber toilet designed specifically for situations where space is extremely limited. With the exception of the GTG, the SpaceSaver is Sun-Mar’s smallest composting toilet. The SpaceSaver is designed to be used when you have tighter spaces. With a width of only 19 1/2″ and depth of 23″, even a closet or small corner can now be turned into a bathroom! Installations include, but are not limited to: cabins, cottages, homes, yurts, pool houses, cabanas, bunkies, camps, treehouses and workshops.
It is run exclusively off of 110v power, and has a heating element and fan built in to handle evaporation of liquids and odorless operation, respectively. Click to view the SpaceSaver in our webstore.
All Sun-Mar composting toilets have a 3 year warranty on parts. For information on Sun-Mar’s warranty, visit here to view a copy of Sun-Mar’s warranty card.
More information
Capacity
The listed capacities refer to the amount of people, on average, using the unit per day.
Residential/Continuous
1 adult
Seasonal/Vacation
3 adults or families of 4
Electrical Specifications
Electricity must be connected while the unit is in use for proper operation.
Maximum Amps (With Heater On): 2.0
Fan Watts: 35
Heater Watts (When Thermostat switches it on): 160
Average Power Use in Watts (Heater on 1/2 time): 110
Vent Pipes and Drains
All Sun-Mar products must be properly vented per the guidelines present in the unit’s owner’s manual.
Vent Pipe: 2″ Thin-wall PVC
Drains: 1” OD
The safety drain is recommended in residential application.
Weight and Dimensions
Measurements are given in pounds (lbs) and inches.
Height: 30″
Width: 19 1/2″
Length: 23″
Weight: 43 lbs
Shipping Weight: 68 lbs
Shipping Carton Dimensions: 38″ by 23″ by 30″
So glad we switched from a standard flush to composting
We are learning the ins and outs of our composting toilet. (Verified Home Depot Canada review)
Great product
Easy to setup, simple to use, no odour. (Verified Home Depot Canada review)
Recommande cette toilette
Bon service (Verified Home Depot Canada review)
This is the 2nd one I’ve owned
The first one lasted 22 years and I was still able to sell it to someone else. I’ve seen negative reviews about this product that I can tell you from experience are all attributed to operator errors. Read the directions and you’ll be fine. All compost toilets take maintenance. I use this in an airbnb and people are very impressed with it. No complaints. (Verified HomeDepot.com review)
10+ years and going strong!
I have an Excel NE, so I hope this is the correct model I’m reviewing. I own a small, off-grid island in northern Ontario. There was no possibility of having a regular toilet, due to the rocky surface necessitating an above-ground septic tank. (Not only the insightliness, but also the challenge of having an island septic tank serviced, made that option unsatisfactory.).
Happily, my SunMar composting toilet is an awesone substitute. We’re typically there every 2nd or 3rd weekend from May ‘til October, but have been there for a few weeks, at times, or had large groups for a few days. I even lived there for four months, in 2005. It handled it all very well.
The only criticisms I have are the ease of which the material forms into balls, which hold their shape even in the finisher; the large size; the price (although, with over a decade of use so far, the cost-per-use is low); as well as the handle’s tendency to to want to slide back into its groove, while turning. I am keenly aware of this latter fact, so I keep tension on the handle, pulling it towards me as I rotate it. But not everyone understands this, and I’m dreading the day I show-up and find a chunk of plastic snapped-off the handle or the unit. (I hate broken things.) Surely, a design adjustment could prevent this from happening, rather than relying on the user to remember to apply outward pressure while also turning. I think I’ve put an adequate amount if fear into everyone, which is why it hasn’t happened yet.
Do I recomnend this product? So much, yes! I keep wondering why this product isn’t mass-produced for countries where open pit elimination and outhouses are still commonplace? The user experience of this product is so similar to a standard toilet, it is probably the best choice for anyone wanting or needing to live greener. (Verified Home Hardware review)





