Saniflo Sanibest Pro Heavy-Duty Upflush Toilet with Grinder

Saniflo Sanibest Pro: Heavy-Duty Upflush for Multi-Fixture Below-Grade Bathrooms

The Saniflo Sanibest Pro is Saniflo's heavy-duty upflush toilet system — designed for installations requiring multi-fixture connectivity (toilet + sink + shower or tub) and higher discharge volume than the standard Saniplus can handle. Where Saniplus connects only the toilet, Sanibest Pro accommodates a full bathroom suite: toilet, vanity sink, shower or tub, and additional appliances like a washing machine in the same below-grade space. At $1,799-$2,499 retail, the Sanibest Pro is the upflush specification for complete below-grade bathroom additions rather than just toilet-only installations.

What the Sanibest Pro Does That Saniplus Doesn't

• Multi-fixture connectivity: single macerator unit handles toilet, sink, shower/tub, and additional fixtures in one system
• Higher capacity grinder: heavier-duty grinder blade handles higher flush volumes and occasional accidental flush of small items
• Greater pump capacity: 1 HP motor (vs. 0.5 HP Saniplus) handles higher water volumes from multiple simultaneous fixture uses
• Same vertical lift and horizontal run capacity as Saniplus (15 vertical feet, 150 horizontal feet)
• Same discharge pipe diameter — 3/4" or 1" small-diameter routing

Multi-Fixture Bathroom Configuration

A typical Sanibest Pro installation handles:

• Toilet (Sanibest Pro vitreous china bowl)
• Vanity sink (any standard bathroom sink with 1.25" or 1.5" drain)
• Shower stall or tub (drain runs into the Sanibest Pro inlet, not into the building's main drain)
• Optional washing machine drain
• Optional kitchenette sink (in ADU configurations)

All fixtures drain into the central Sanibest Pro macerator unit, which grinds and pumps waste through small-diameter discharge piping to the main waste line above. This enables complete below-grade bathroom suites in basements, garage conversions, attic master suites, ADUs, and tiny homes.

Heavy-Duty Grinder Technology

The Sanibest Pro uses a 1 HP motor driving a stainless-steel grinder blade at 3500 RPM. The heavier-duty motor and reinforced grinder design handle higher waste volumes and provide better margin against accidental flushes of small items (e.g., a tampon accidentally flushed will typically pass through the Sanibest Pro grinder where it would jam the standard Saniplus). However, this is not a license to flush items the system isn't designed for — wipes, sanitary products, and non-degrading items will still cause jams.

Installation Requirements

• Electrical: dedicated 120V 20-amp GFCI circuit (heavier than Saniplus 15-amp requirement)
• Water supply: cold water for toilet, hot and cold for sink and shower/tub
• Discharge plumbing: 3/4" or 1" PVC discharge piping routed to main waste line
• Venting: 1.5" vent stack from macerator to roof
• Permits: plumbing and electrical permits required in most municipalities
• Installation labor: 12-24 hours for complete multi-fixture installation — $2,500-$5,500 typical professional install cost
• Construction: if shower/tub is included, requires waterproof shower pan and tile/surround installation

Specifications

• Form factor: Toilet + central macerator unit + multi-fixture inlets
• Bowl shape: Elongated
• Material: Vitreous china bowl + ABS plastic macerator housing
• Flush volume: 1.28 GPF (WaterSense certified)
• Macerator power: 120V AC, 1 HP motor, 1000W during pump operation
• Macerator RPM: 3500 (heavy-duty stainless steel grinder blade)
• Maximum vertical lift: 15 feet
• Maximum horizontal run: 150 feet
• Discharge pipe diameter: 3/4" or 1"
• Multi-fixture inlets: toilet + sink + shower/tub + optional washing machine
• Noise level: ~58-65 dB during pump cycle
• Color: Glossy White (bowl)
• Warranty: 2 years parts and labor on macerator, 1 year on vitreous china

Care and Maintenance

• Standard toilet bowl cleaners safe
• Avoid bleach soaks in the macerator chamber — degrades seals
• Quarterly Saniflo-approved descaler ($25-$40) to prevent mineral buildup
• Never flush wipes, sanitary products, dental floss, paper towels — strict use restrictions despite heavier-duty grinder
• Sink and shower drains: standard drain maintenance, avoid pouring grease or hair-loaded water into macerator inlets
• If macerator jams: call Saniflo authorized service or licensed plumber — don't attempt manual reversal

Pros

• Single system handles complete below-grade bathroom suite (toilet + sink + shower/tub)
• Heavy-duty 1 HP motor handles higher waste volumes
• Improved grinder margin vs. Saniplus standard model
• Same 15-foot vertical lift and 150-foot horizontal run capability
• Small-diameter discharge piping dramatically reduces installation cost vs. gravity drain
• Industry-standard for multi-fixture below-grade installations
• WaterSense 1.28 GPF water conservation
• 2-year macerator warranty

Cons

• Significantly more expensive than Saniplus — $1,799-$2,499 vs. $1,099-$1,499
• Total installed cost $4,000-$8,000 for complete multi-fixture below-grade bathroom
• Louder pump cycle than Saniplus (heavier motor)
• Requires dedicated 20-amp GFCI circuit (heavier than Saniplus requirement)
• Same use restrictions as Saniplus — no wipes, sanitary products, etc.
• Macerator jams require professional service
• 1-year china warranty short vs. premium standard toilets
• Complex installation requires experienced plumber and electrician

Who Should Buy the Sanibest Pro

• Complete below-grade bathroom additions (toilet + sink + shower/tub)
• Basement ADU conversions requiring full bathroom suite
• Garage conversions with full bathroom requirements
• Multi-fixture installations where Saniplus capacity is insufficient
• Households expecting higher use intensity than standard residential
• Builders specifying single-system upflush for production basement bathroom add-on packages

Sanibest Pro vs. Saniplus: The Decision

• Saniplus: toilet-only basement bathroom additions, lower cost, sufficient for most residential single-toilet installations
• Sanibest Pro: multi-fixture below-grade bathrooms, higher cost, necessary for complete suite installations
• Saniaccess 3: middle option — toilet + sink (no shower), positioned between Saniplus and Sanibest Pro