HMAX Zenflow — Ultra-Quiet Mini-Split Condensate Pump — 19 dBA, 34,000 BTU, 32.8 ft Head

HMAX Zenflow — Ultra-Quiet Mini-Split Condensate Pump

The HMAX Zenflow is a low-profile, ultra-quiet condensate removal pump engineered for ductless mini-split systems up to 34,000 BTU (10 kW). At just 19 dBA it’s virtually inaudible during operation, and its slim 12.4″ × 2.1″ body tucks directly behind the indoor head — no bulky reservoir hanging below the unit. Ships direct from the distribution center — email us at [email protected] for installer pricing.

What Makes the Zenflow Different

Most mini-split pumps are noisy, bulky, or both. The Zenflow uses a diaphragm pump design that runs at 19 dBA (quieter than a whisper), draws only 4 watts when running and 1.5 watts on standby, and integrates directly into the wall trim behind the indoor head. The cover doubles as the reservoir, eliminating the drooping plastic tank that competing pumps require.

Specifications

• SKU: ZENFLOW
• Brand: HMAX
• Pump dimensions: 12.4″L × 2.1″W × 1.7″H
• Rated capacity: 10 kW / 34,000 BTU cooling
• Maximum flow rate: 5.3 GPH (20 L/h)
• Maximum head: 32.8 ft (10 m)
• Noise level: 19 dBA (ultra-quiet)
• Voltage: 100–240V, 50/60 Hz (universal)
• Power draw: 4W operating / 1.5W standby
• Alarm switch: 100–240V 5A, NC/NO contacts
• Includes: Pump body, pressure hose (6mm × 1.5mm), integrated non-return valve, mounting hardware, wall-mount cover/reservoir

Applications

• Wall-mounted ductless mini-splits up to 34,000 BTU
• Retrofit installs where gravity drain is not possible
• High-rise condo installs with no exterior drain wall
• Any indoor head installed below the outdoor drain point

HMAX Zenflow — Frequently Asked Questions

How quiet is the Zenflow really?
19 dBA — quieter than a whisper (typical whisper is 30 dBA). Homeowners in the same room won’t hear it running.

What size mini-split does the Zenflow handle?
Up to 34,000 BTU (10 kW) cooling capacity. That covers virtually every residential wall-mount head — 9K, 12K, 18K, 24K, and 30K BTU units.

How high can the Zenflow pump condensate?
Maximum vertical lift is 32.8 feet (10 meters). Maximum flow rate of 5.3 GPH easily handles the highest-humidity days in Miami or the Gulf Coast.

Does the Zenflow include the alarm output for the indoor head?
Yes. The pump has an integrated 100-240V 5A NC/NO alarm switch that ties into the indoor head’s error input, so the mini-split shuts off automatically if the pump ever fails or the reservoir fills.

Why Buy the Zenflow from Cedars HVAC

• Ships direct from the distribution center — 1-3 day ground across Florida and the Southeast
• Installer volume pricing — email us at [email protected]
• Genuine HMAX product, factory-warranted
• 30-day return policy on unopened units

Shipping and Returns

The Zenflow ships direct from the distribution center. Standard handling 5–7 business days.