FS-Curtis ML15+ 120G Horizontal 15HP Simplex Tank Electric Air Compressor #ML15Plus-SH
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| Model / Part Number | ML15Plus-SH |
| Horsepower | 15 HP |
| Tank | 120 Gallon Horizontal ASME |
| Airflow | 55.8 CFM @ 175 PSI |
| Pressure Range | 175 PSI |
| Warranty | 12 months |
FS-Curtis ML15Plus-SH — 15 HP Air Compressor
An owner just finished walking a competitor's shop and watched three techs pull air from one line without so much as a stutter in pressure — and came home wondering why their own compressor can't keep up the same way during a busy multi-bay shift.
The FS-Curtis ML15Plus-SH is a two-stage reciprocating compressor rated for 15 HP with a 120 gallon horizontal ASME tank, built for shops and commercial operations that need compressed air on tap all day without paying for accessories they don’t need.
Who the ML15Plus-SH Is Built For
- ✅ A commercial shop that's added bays over the years and watched its standard ML15's 49.5 CFM start falling short during a busy multi-tech shift, but already has a working refrigerated dryer installed from a prior upgrade and doesn't want to pay again for accessories it doesn't need
- ✅ An owner comparing the base ML15-SH against this ML15+ configuration line-by-line and choosing the C89 pump specifically because the extra 6.3 CFM matters more to their actual daily draw than the price gap
- ✅ A facility manager budgeting a compressor replacement who wants the highest-output pump platform in the 15 HP tier now, with the explicit plan to add Ultra Pack accessories in a later budget cycle rather than all at once
- ✅ A shop running several bays simultaneously where a tech has already noticed a tool losing pressure mid-job on the standard ML15, and needs the C89 pump's extra headroom without paying for a dryer bundle they'll install separately
- ✅ A multi-location operator standardizing on FS-Curtis's ML15+ pump platform across several shops for common parts and service, starting each new install at the base configuration and layering in accessories site-by-site as budgets allow
What the ML15Plus-SH Is NOT Built For
- ❌ Shops whose demand is fully covered by the standard ML15 (49.5 CFM) or an ML10 unit — the ML15+ costs more for the extra output
- ❌ Shops wanting factory auto-drain/dryer accessories standard — the Ultra Pack (ML15Plus-HUP) adds those, this base unit doesn't
- ❌ Shops needing single-phase power — this series is three-phase only
What Makes the ML15Plus-SH Different
Commercial 2-Stage Pump
The ML15Plus-SH uses a C89, Cast-Iron, Two-Stage pump built for daily, all-day duty cycles — not a hobby-grade single-stage unit that struggles under continuous shop use.
CFM & Pressure Output
Delivers 55.8 CFM @ 175 PSI and holds pressure up to 175 PSI, enough headroom to run impact wrenches, tire equipment, and paint tools without the tank running dry.
Power Requirements
Three-Phase only, 230V/460V options available. Confirm your panel and breaker sizing with an electrician before delivery.
- 55.8 CFM — highest 15 HP output
- Lower entry price, no bundled accessories
- High-demand commercial shops
- Shops covered by standard 15 HP
- Single-phase-only electrical
ML15Plus-SH vs. FS-Curtis ML15-SH (15 HP, Standard D97 pump) — Which Compressor Is Right for Your Shop?
| Decision Point | ML15Plus-SH | FS-Curtis ML15-SH (15 HP, Standard D97 pump) |
|---|---|---|
| Horsepower / Tank | 15 HP / 120 Gal Horizontal | 15 HP / 120 Gal Horizontal |
| CFM @ 175 PSI | 55.8 CFM | 49.5 CFM |
| Pump | C89 — higher-output pump platform | D97 — standard pump platform |
| Best fit | Shops needing the highest CFM available at 15 HP | Shops where standard 15 HP output is sufficient |
Choose the ML15+ SH for the highest CFM output available at 15 HP without the added accessory cost. Choose the standard ML15-SH if 49.5 CFM already covers your shop's demand — it costs less. Both stay inside Alamo’s catalog — call (844) 480-6059.
Full Specifications — ML15Plus-SH
| Model / Part Number | ML15Plus-SH |
| Horsepower | 15 HP |
| Pump | C89, Cast-Iron, Two-Stage |
| Configuration | Two-Stage Reciprocating |
| Tank | 120 Gallon Horizontal ASME |
| Airflow | 55.8 CFM @ 175 PSI |
| Pressure Range | 175 PSI |
| Motor / Electrical | Three-Phase only, 230V/460V options available |
| Phase / Hz / Voltage |
Three Phase: 3/60/200-208V (FML15C89H1S-A9L1XX) |
| Overall Dimensions | 74" L x 36" W x 57" H |
| Shipping Weight | 1250 lbs |
| Warranty | 12 months |
⚠️ Setup Requirements
- Electrical: Three-Phase only, 230V/460V options available; have an electrician confirm your panel capacity before delivery.
- Floor space: 74" L x 36" W x 57" H footprint; plan clear access on at least two sides for maintenance and tank drain.
- Ventilation: Locate in a dry, ventilated area away from dust and moisture to protect the pump and tank.
- Weight: 1250 lbs shipping weight — confirm your floor/dock can receive and position the unit.
- Setup: Installation is available as a quoted service (piping, electrical tie-in, functional test) — it’s not included in the purchase price. Call (844) 480-6059 for an install quote if you’d like Alamo’s crew to set it up.
FS-Curtis Warranty — ML15Plus-SH
FS-Curtis backs the ML15Plus-SH with a 1-year parts-only warranty.
| Component | Coverage Term |
|---|---|
| Tank & pump | 1 year parts |
| Motor & electrical components | 1 year parts |
| Wear items (belts, filters, gaskets) | Not covered (consumable) |
Warranty service is through Alamo Equipment & Service — call (844) 480-6059 instead of waiting on a manufacturer hotline. Coverage is subject to FS-Curtis warranty terms, conditions, and requirements.
Frequently Asked Questions — FS-Curtis ML15Plus-SH
Why Buy the ML15Plus-SH from Alamo Equipment & Service?
- Installation available. Buying online gets you the compressor — piping and electrical tie-in are an extra-charge service. We have the crews to install it and can quote that separately; call (844) 480-6059 for a quote.
- We service it. These compressors need preventative maintenance up to 4x a year per the manufacturer — oil changes, belt and air filter checks, contactor and electrical inspection. Call (844) 480-6059 for maintenance, repairs, or support — and if you ever need warranty work, we register your equipment with the manufacturer and handle the claim directly, so you’re not stuck navigating vendor support on your own.
- We size it with you. 15 HP, a 120 gallon horizontal ASME tank, 55.8 CFM @ 175 PSI — we’ll confirm this matches your shop’s actual air draw before you order.
- Free shipping. Ships free to the 48 contiguous states.
- Expert comparison help. Not sure if the ML15Plus-SH or the FS-Curtis ML15-SH (15 HP, Standard D97 pump) is the better fit? We’ll walk you through it.
A shop buying from a pure e-commerce retailer gets a box. A shop buying from Alamo gets a partner.
Shipping Rates and Delivery Estimates: Shipping is FREE to the 48 contiguous United States.
Shipment Processing Time: All orders are processed within [2–3] business days of receipt, excluding weekends and holidays. Orders are not processed or shipped from Friday at 12 pm CST through Sunday or on holidays. During periods of high order volume, shipments may be delayed by a few days. Customers will be notified via email or phone in the event of significant delays.
See the attached document for FS CURTIS WARRANTY