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B2B marketplace · Commercial equipment only

Heavy equipment,
bought with certainty.

Chillers, rooftop units, switchgear, boilers and standby power from verified sellers. Every listing is nameplate-verified, every load is insured, and every purchase is protected by a 7-day functional inspection.

Cummins GTA28 enclosed generator
Featured · Standby Power
2017 Cummins GTA28 · 500 kW
$225,000
$1,500+
Commercial-grade listings only
7 days
Functional inspection window
100%
Loads insured in transit
250 lb+
Heavy equipment, palletized or rigged
Shop by category

Built for the mechanical room, the roof and the switchyard.

Tier 1 · 1,284 listings
Rooftop Units & HVAC
Tier 1 · 642 listings
Chillers & Cooling Towers
Tier 1 · 918 listings
Commercial Refrigeration
Tier 1 · 1,107 listings
Switchgear & Transformers
Tier 1 · 733 listings
Plumbing, Hydronics & Water Heaters
Tier 2 · 386 listings
Boilers
Tier 2 · 571 listings
Compressed Air
Tier 2 · 804 listings
Standby Power
9 categories
Water treatment, pumps & everything else
View all
Featured listings

Fresh inventory from verified sellers.

Caterpillar XQ570 Nameplate verified 9
Standby Power

2019 Caterpillar XQ570 Diesel Generator Set

570 kW480V 3ØTier 4F
Fontana, CA · Used · 38,500 lb
$230,000
+ freight
Make OfferBuy Now
Cummins GTA28 Nameplate verified 18
Standby Power

2017 Cummins GTA28 Natural Gas Generator

500 kW480V 3ØEnclosed
Allentown, PA · Used · 21,000 lb
$225,000
+ freight
Make OfferBuy Now
Kohler 150REOZJF Nameplate verified 8
Standby Power

2020 Kohler 150REOZJF Diesel Standby Generator

150 kW208V 3ØSound atten.
Ontario, CA · Used · 6,200 lb
$39,950
+ freight
Make OfferBuy Now
Square D 2000/2667 kVA Nameplate verified 16
Electrical Distribution

Square D Unit Substation Transformer

13.2kV HV480V LV3Ø 60Hz
Columbus, OH · Used · 14,800 lb
$29,500
+ freight
Make OfferBuy Now
Marley AV66011S Nameplate verified 10
Commercial HVAC

2005 Marley AV66011S Cooling Tower

Induced draftStainless basinVFD fan
Tampa, FL · Used · 11,200 lb
$39,700
+ freight
Buy Now
Miura LX-150SG Nameplate verified 14
Boilers

Miura LX-150SG Steam Boiler

150 BHPNatural gasLow NOx
Greenville, SC · Used · 7,900 lb
$15,000
+ freight
Make OfferBuy Now
Hussmann Protocol Unit 2 Nameplate verified 6
Refrigeration

Hussmann Protocol Refrigeration System

Medium tempDistributed208–230V
Grand Rapids, MI · Used · 1,650 lb
$14,999
+ freight
Make OfferBuy Now
Atlas Copco GA90 Nameplate verified 8
Compressed Air

2002 Atlas Copco GA90 Rotary Screw Compressor

125 HP460V 3ØAir-cooled
Worcester, MA · Used · 5,300 lb
$13,000
+ freight
Make OfferBuy Now
Evapco AT 8-96B Nameplate verified 9
Commercial HVAC

Evapco AT 8-96B Cooling Tower

CounterflowGalvanized460V fan
Spartanburg, SC · Used · 6,400 lb
$11,500
+ freight
Make OfferBuy Now
API Schmidt-Bretten SIGMA 90V Nameplate verified 5
Plumbing & Hydronics

API Schmidt-Bretten SIGMA 90V Plate Heat Exchanger

GasketedSS platesFrame only
Detroit, MI · Used · 2,900 lb
$10,000
+ freight
Make OfferBuy Now
Sorgel 500T63H Nameplate verified 11
Electrical Distribution

Sorgel 500 kVA Dry-Type Transformer

480V HV240V LV3Ø 60Hz
Columbus, OH · Used · 3,100 lb
$4,999
+ freight
Make OfferBuy Now
Kaeser AS 25 Nameplate verified 29
Compressed Air

2013 Kaeser AS 25 Rotary Screw Compressor

25 HP460V 3Ø125 PSI
Grand Rapids, MI · Used · 1,100 lb
$3,799
+ freight
Make OfferBuy Now
How it works

One protected process, from listing to startup.

For buyers
4 stages

  1. Find & verify

    Search

    Filter by tonnage, voltage and refrigerant. Check nameplate photos and rigging details.

  2. Buy Now or Make Offer

    Funds held

    Pay the price or negotiate. Freight and cargo insurance are quoted at checkout.

  3. Ship or pick up

    Funds held

    Insured carrier delivery, or collect it with your own crew and pay no freight.

  4. 7-day inspection

    Released

    Start it up and test. Release payment early, or open a claim before Day 7.

For sellers
4 stages

  1. List with proof

    Free to list

    Nameplate photos, electrical specs, condition notes and submittals.

  2. Declare loading

    Review

    Dock, forklift or crane access so freight quotes and pickups are accurate.

  3. Hand it over

    Buyer paid

    We book and insure the carrier, or the buyer collects. You prep the unit.

  4. Get paid

    Paid out

    Payout releases once the 7-day inspection closes with no open dispute.

TheMechX Buyer Guarantee

Your money moves only when the equipment runs.

Payments are held until your 7-day functional inspection closes. If a unit doesn't match its listing, we resolve it on-site first — because shipping a 6-ton chiller back rarely helps anyone.

Held funds
Startup test
Insured cargo
Remediation ladder
Seller defect / misrepresentation
  1. 1
    Repair credit
    Parts allowance or repair credit for verified defects.
  2. 2
    Scrap in place
    Negotiated net settlement — no return freight.
  3. 3
    Local resale
    Liquidation or secondary sale near the buyer.
  4. 4
    Return freight
    Last resort, seller-funded, gross misrepresentation only.

Sizing or engineering mismatches aren't returnable — we offer discounted relisting help instead.

Freight & logistics

Freight that understands 20,000-pound packages.

Delivery method · chosen at checkout
Insured freight

Carrier booked and tracked. Freight + cargo insurance added to the order.

Local pickup

Collect from the seller's site with your own crew. $0 freight.

RIG-01

Declared rigging

Sellers confirm dock, forklift or crane access before a listing goes live.

FRT-02

LTL & flatbed quotes

Freight is priced at checkout from verified dimensions and weight.

INS-03

Loadsure cargo cover

Every shipped load insured as a pass-through line item.

BOL-04

48-hour damage window

Note it on the BOL, photograph it, report within 48 hours.

Sell with TheMechX

Turn surplus equipment into capital — without the hassle.

Decommissioned chillers, spare switchgear, idle generators. List in minutes and reach qualified commercial buyers nationwide.

Start a listing No listing fees

Buyers who speak your language

Mechanical contractors, facility teams and electrical buyers searching by tonnage, kW and voltage — not bargain hunters.

Freight off your plate

We quote, book and insure the carrier. You prep the unit for pickup; no chasing trucks or rigging bids.

Guaranteed funds

Buyer payment is collected before the unit leaves your dock. No bounced checks, no collections.

Spec-first listings

Guided intake turns a nameplate photo into a complete spec sheet that ranks in search.

Seller support
Have a whole mechanical room to clear?

Our team helps with multi-unit decommissions, photos and pickup scheduling.

Talk to us
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