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Champion HR25-12ADV 25 HP Two-Stage Horizontal Air Compressor
What separates the HR25-12ADV from a bare 25 HP compressor on a tank is what has already been done to it before it leaves the factory. This is Champion's Advantage build: the mounted control panel, the vibration isolator pads, the automatic tank drain and the low oil level monitor are fitted and wired as part of the unit rather than quoted as separate line items you chase afterwards. The pump carries a 3 year warranty.
Underneath the package it is a heavy duty two stage, splash lubricated reciprocating pump on a horizontal receiver, rated 25 HP and 91 CFM at a maximum 175 PSI. It is a machine for a shop that runs air all day: multiple bays, a plasma table, a blast cabinet, production tooling.
What the Advantage build actually saves you
Buy a large industrial compressor as a bare assembly and the quote is only the beginning. You still need a starter with thermal overload protection sized to the motor, a low voltage supply for the auxiliary gear, something to isolate the frame from the slab, and a way to get condensate out of the receiver. Each is a separate part number and, usually, a separate electrician visit.
Here they arrive fitted. The mounted NEMA 1 control panel includes a control voltage transformer, so the auxiliary components run on a sensible low voltage rather than being spliced off the incoming three phase supply, and thermal overload protection is part of the same panel. The isolator pads do two jobs at once: they take vibration out of the slab, which is what your neighbours and your bench-mounted instruments notice, and they absorb a floor that is not perfectly level, which is what the tank feet and pump mounts notice.
The low oil level monitor is the part worth paying for
Splash lubrication is simple and it is reliable, but it depends entirely on there being oil in the crankcase to splash. A two stage industrial pump that runs low on oil does not usually announce itself; it just runs hot until something seizes, and by then the repair is a pump, not a service.
The monitor shuts the compressor down when the level drops below the safe mark, and it will not let the machine restart until the level is corrected. That second half matters more than the first. A shutdown that can be cleared by cycling the switch gets cleared by whoever finds it, and the pump keeps running dry. A lockout forces someone to actually look at the sight glass.
Two stage compression, and why the intercoolers are there
Air heats up when you squeeze it. Do all the squeezing in one cylinder and you get very hot air, which carries more moisture into the tank, thins the oil film and makes the pump work harder for every cubic foot. Two stage compression splits the work: the air is partly compressed, run through a finned intercooler where it dumps heat, then compressed the rest of the way in a smaller cylinder. The result is a cooler machine at 175 PSI, drier air downstream and less thermal load on the rings and valves.
The rest of the pump follows the same logic: multi-finned cylinders and an integral head shed heat rather than trapping it, tapered roller main bearings and a balanced crankshaft keep the rotating assembly steady at load, and a centrifugal unloader vents the pump so the motor comes up to speed against no load.
Will it fit, and what does it need?
Power first, because it is the item that stops installations. This is a three phase machine, built for 208 V, 230 V or 460 V, and Champion asks you to specify the supply when ordering. If your building has single phase service only, this is not the compressor for that building. Have your electrician confirm the supply and breaker size before you order.
Physically, the unit is roughly 71 inches long and weighs about 1,450 lbs, so plan the route in as well as the resting place. It wants a flat, solid, level floor: the isolator pads will forgive a slab that is slightly out of level, but not a soft or cracked one. Leave clear air around the cooling fan and intercoolers, because a compressor pushed tight into a corner recirculates its own hot air. The receiver has a 3/4 inch service outlet for your shop main.
The exact height, width and doorway clearance are not recorded in the data we hold for this listing, so we have not printed them. If clearance is tight, ask us and we will confirm the figures against the factory drawing before you commit.
Perfect for

Multi-bay service shops running impact tools, lifts and air-fed equipment at once.

Fabrication and production floors where a plasma table or blast cabinet keeps a heavy, steady draw on the system.

Fleet and municipal maintenance that needs a machine sized to run for years, not sized to just cope.

Facilities with three phase service wanting a compressor delivered ready to wire.

What is included

Two stage splash lubricated pump, factory filled with ChampLub lubricant
Horizontal receiver with relief valve, service valve, drain valve and gauge
Mounted NEMA 1 control panel, control voltage transformer, thermal overload
Vibration isolator pads
Automatic tank drain, pneumatic or adjustable electric time drain
Low oil level monitor with restart lockout
Oversized 10 micron intake filter and silencer
Enclosed belt guard, oil sight glass, 0-300 PSIG tank gauge

Specifications

Model
HR25-12ADV

Motor
25 HP

Air delivery
91 CFM

Maximum pressure
175 PSI

Pump
Two stage, splash lubricated, simplex

Supply
Three phase, 208 V, 230 V or 460 V (specify when ordering)

Tank orientation
Horizontal

Tank outlet
3/4 inch

Overall length
71 inches

Weight
1,450 lbs

Magnetic starter
Included

Integrated air dryer
Not fitted

Two things worth confirming before you order
Published figures for the motor speed differ: Champion's literature for this series lists 1800 RPM motors in one place, and a 1760 RPM ODP NEMA motor in another. If motor speed decides your installation, your starter selection or a spares order, ask us to confirm it in writing before you order and we will take it from the build sheet for the unit you are buying.
Two weights are published for this machine: an approximate crated shipping weight, and the unit weight of about 1,450 lbs quoted above. A crate weighing more than the machine is normal, but if you are sizing lifting equipment to the pound, ask us for the crated figure in writing.
Certification, stated honestly
The receiver is described as a code stamped air receiver with a pressure relief valve, and the series copy refers to an inter-stage relief valve on the pump. Beyond that, the product data we hold records no third-party safety listing for this compressor, and we will not imply one our data does not show. That is a statement about our records, not a claim the machine lacks anything. If an insurer, a local inspector or a plant safety audit requires a specific listing or stamp, tell us which one and we will confirm it against the factory documentation before you order rather than after.
Shipping and delivery
This compressor moves by freight truck. At roughly 1,450 lbs on a pallet, no parcel service will handle it, and we ship within the contiguous United States only. This item ships free, so there is nothing to add at checkout.
You are responsible for getting the unit off the trailer, so have a forklift rated well above the unit weight ready, or choose terminal pickup and collect it with your own equipment. Delivery to a residential address carries a residential fee, which the checkout quote shows before you pay. Inspect before you sign: walk the pallet, look for a crushed corner, torn wrap, a bent tank foot or an oil stain, and write anything you find on the bill of lading with photographs to match. A clean signature says the machine arrived undamaged and is very hard to argue with afterwards.
Warranty and support
Each new assembled unit carries a 3 year warranty on the compressor pump. Full terms and the claim process are on our warranty claims page. One practical warning: do not disassemble a pump or a control panel to diagnose a fault before you open a claim. Stripping a component first is the most common way a valid claim is refused. Call the fault in and take instruction before a spanner goes near it.
To check phase and voltage, confirm crated dimensions, or work out whether this is more compressor than your shop needs, call, text or chat with us on 866-774-7743 before you order.
Brand:Gardner DenverCategory:Air CompressorSKU:HR25-12ADVTags:Air compressor, Electric Air Compressor, Professional Shop Use Air Compressor, Two Stage Air Compressor