310-Pint LGR Commercial Dehumidifier with Pump and Drain Hose

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What the 310-Pint LGR Commercial Dehumidifier Is

It's an LGR (Low Grain Refrigerant) commercial dehumidifier with a built-in condensate pump (15-ft lift head) and a 25-ft drain hose, plus a 10-pint internal backup tank. The pump lets you drain up and out of a basement or below-grade space rather than relying on gravity alone. It draws 1150W (10.5A), moves 550 CFM of air, and includes a digital humidistat with real-time inlet/outlet temperature and humidity display and automatic restart after a power interruption. It weighs about 125 lb on wheels — sized for water damage restoration, basements, crawl spaces, and job sites, not routine single-room humidity control.

The number in the name deserves a closer look. 310 pints per day is the saturation rating — the maximum theoretical removal under high-heat, high-humidity lab conditions. The figure most buyers should actually compare against is the AHAM rating (measured at 65°F/60% RH, the industry-standard test point): 165 PPD, roughly half the headline number. That's not a flaw specific to this unit — most commercial dehumidifier brands name their products after the saturation figure — but it's worth knowing before you size equipment for a job.

Building a Complete Drying Setup

A dehumidifier alone rarely finishes a water-damage drying job — it works alongside air movers in a standard setup: air movers accelerate evaporation off wet surfaces, and the dehumidifier pulls that moisture out of the air before it resettles or drives mold growth. Pair this unit with an air mover sized to the space, such as the XPOWER P-230AT for smaller rooms or the higher-capacity Sunmax RT900A for larger areas. If drying is delayed and mold has already developed, cleanup crews need properly rated respiratory protection — see our best respirator cartridge for mold remediation guide, best Honeywell North cartridge for mold remediation, and best Moldex respirator cartridges guide before starting cleanup.

Pros & Cons

Specifications

Standards and regulatory context

Humidity control is a building-health control. EPA mold guidance puts the target indoor relative humidity at 30-50%, because most mold growth requires sustained moisture rather than standing water, and the practical rule after a water event is that porous materials wet longer than 48 hours are generally removed rather than dried. LGR (low-grain refrigerant) units are rated at AHAM conditions, so a pints-per-day figure on the box is a test-condition number and not what the machine will pull in a cold crawlspace.

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Frequently Asked Questions

Does this dehumidifier actually remove 310 pints a day?

Only at its saturation rating — the maximum theoretical removal under high-heat, high-humidity lab conditions. The realistic figure most buyers should compare against is its AHAM rating (measured at 65°F/60% relative humidity, the industry-standard test point): 165 pints per day, roughly half the number in the name. Real-world performance depends heavily on your actual temperature and humidity.

What's the difference between the saturation rating and the AHAM rating?

Saturation is the maximum removal rate under ideal, very humid and warm lab conditions — a best-case ceiling. AHAM is a standardized test at 65°F and 60% relative humidity, closer to typical working conditions, which is why it's the figure most commercial dehumidifier buyers use to compare units fairly. Product names across the industry commonly use the bigger saturation number.

How does the built-in pump work?

A condensate pump lifts collected water up to 15 feet, so you can drain to a sink, drain, or window above the unit instead of relying on gravity alone — essential in a basement or below-grade space where gravity drainage isn't an option.

How long is the included drain hose?

25 feet, which reaches most drains, sinks, or window discharge points in a typical basement or job-site setup without needing an extension.

Can I use it without connecting the drain hose?

Yes — it has a 10-pint internal tank as a backup, so it can run and collect water in the tank if you're not actively draining. For continuous unattended operation, connecting the pump and hose to a drain is the practical choice, since the tank fills and needs emptying much sooner than a drained setup.

How much power does it draw?

1150 watts at 10.5 amps — confirm your circuit can handle that load, especially if you're running multiple pieces of restoration equipment (dehumidifiers, air movers) on the same circuit at a job site.

What size space is this dehumidifier meant for?

It's sized for water damage restoration jobs, basements, crawl spaces, and larger job sites — not a single small bedroom. Its airflow (550 CFM) and capacity are built for active drying after a flood or leak, not routine household humidity control in one room.

Does it work with air movers for a complete drying setup?

Yes — a dehumidifier and air movers work together in a standard water-damage drying setup: air movers accelerate evaporation from wet surfaces, and the dehumidifier pulls that moisture out of the air. Pair it with air movers like the XPOWER P-230AT or a higher-CFM unit such as the Sunmax RT900A depending on the space size.

What brand makes this dehumidifier?

The manufacturer is MOUNTO, verified across multiple retailer listings for this exact model. The store's own vendor field may list it generically, but the unit itself is MOUNTO-branded.

Does it have safety features for unattended operation?

Yes — it includes automatic restart and memory function, so if power is interrupted it resumes with its last saved settings rather than requiring a manual restart, which matters for unattended overnight drying at a job site.

What does LGR mean?

Low Grain Refrigerant — a dehumidifier design that stays effective at lower humidity levels than a standard refrigerant dehumidifier, which is why LGR units are the standard choice for water damage restoration where you need to keep pulling moisture as conditions dry out.

Is prolonged water damage a mold risk if I don't dry it fast enough?

Yes — standing moisture that isn't dried promptly is a well-documented mold risk. If a water event has already progressed to visible mold, cleanup crews typically need a properly rated respirator; see our best respirator cartridge for mold remediation guide before starting cleanup in an affected area.