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MULTISTACK LLC

Subsidiary ofMULTISTACK, LLCUEI: GYLDKFE322G5CAGE: 3E4Y1

MULTISTACK LLC is a federal contractor, registered under UEI GYLDKFE322G5 and CAGE code 3E4Y1. It has been awarded $211,995,920 in federal contracts. Primary work spans Facilities Support Services, Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing, and Commercial and Institutional Building Construction. Top awarding agencies include Department Of State (dos), Department Of State, and Other agencies (6 agencies, <0.5% each).

Contact Information

Registration and classification details

Phone+1 (555) 000-0000

Websitehttps://www.multistack.com

Address123 Main St, City, ST 12345

Registration

UEI Code

GYLDKFE322G5

CAGE Code

3E4Y1

Entity Structure

Partnership or Limited Liability Partnership

Established

N/A

Business Classifications

For Profit OrganizationManufacturer of Goods

NAICS Codes

333415Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing(Primary)

423730Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers

Federal Contracting Overview

Award totals, agency breakdown, NAICS distribution, and geographic footprint.

AI Capability Profile

Multistack LLC specializes in the installation, maintenance, and repair of critical commercial and industrial HVAC, refrigeration, and mechanical systems, with deep expertise in chiller systems, air conditioning equipment, and associated electrical and plumbing infrastructure. The company delivers c...

Key Performance Metrics

Awards Count

613

All time

Active

13

Currently performing

Completed

599

Past period of performance

Total Awards

All time

Contracts

Prime · all time

Subcontracts

Sub · all time

Grants

Prime · all time

Subgrants

Sub · all time

Award Analytics & Distribution

Awards by Agency

Department Of State (dos)$187.8M88.6%Department Of State$23.6M11.1%

Other agencies (6 agencies, <0.5% each)$615.0K0.3%

Awards by NAICS

561210 - Facilities Support Services$182.0M85.9%333415 - Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing$10.5M4.9%236220 - Commercial and Institutional Building Construction$7.9M3.7%333414 - Heating Equipment (except Warm Air Furnaces) Manufacturing$2.3M1.1%238220 - Plumbing, Heating, and Air-Conditioning Contractors$1.2M0.6%

Others - Other NAICS codes (90 codes, <0.5% each)$8.1M3.8%

Awards by Agency Over Time

Awards by Place of Performance

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PIDC Project 3 - Dorm RTU Replacement and SCADA

Solicitation # 70CMSW26D00000004

The U.S. Immigration and Customs Enforcement (ICE) is soliciting a firm-fixed-price construction task order for the replacement and upgrade of Rooftop HVAC Units (RTUs) and SCADA systems at the Port Isabel Detention Center in Los Fresnos, Texas. The project focuses on replacing obsolete and corroded RTUs for the Alpha, Bravo, Charlie, and Delta dorms with high-quality, coastal weather-resistant equipment that incorporates the latest industrial HVAC technology. Additionally, the contractor must implement SCADA upgrades that comply with Texas Commission of Environmental Quality standards. The estimated project magnitude is between 1.2 million and 1.5 million dollars, with a period of performance of 365 days from the date of award. This 8(a) set-aside solicitation requires the contractor to provide all management, labor, and materials, including the removal and disposal of existing units and a one-year warranty for installation and craftsmanship. Key requirements include the submission of a Quality Control Plan and a safety plan, and the mandate that all installers be manufacturer-certified. Due to the secure nature of the facility, all personnel must undergo rigorous background screenings, including criminal history and citizenship checks, and pass the DHS E-Verify program. Award will be based on the lowest total evaluated price, provided the offeror demonstrates a sound technical approach and possesses a Project Manager with at least five years of relevant federal contracting experience.

Bristol Alliance of Companies

POSTED

about 1 hour ago

DEADLINE

JBLM Construct CHP Building

Solicitation # W912K3-26-R-A0001

Solicitation W912K3-26-R-A0001 is a Small Business Set-Aside for the design-bid-build construction of a 20,000 square foot Pre-Engineered Steel Controlled Humidity Preservation (CHP) Building at Joint Base Lewis McChord, Washington. The project scope includes site preparation, concrete slab installation, the purchase and erection of the steel building, and the installation of underground utilities and stormwater mitigation via an infiltration pond. Specialized requirements include the installation of desiccant dehumidifying equipment, a dry pipe fire suppression system compliant with UFC 3-600-01 and NFPA 13, and the provision of conduit to support a future photovoltaic solar system. The project is estimated between 1 million and 5 million dollars, with a statutory limit of 5 million dollars. The government intends to award a Firm Fixed Price task order based on a balanced evaluation of technical capability and price. Technical submissions must include a task-oriented schedule with a completion date no later than 360 days after the Notice to Proceed, as well as qualifications for key personnel. Performance must adhere to strict quality standards, including ISO 9001 and various ASTM and WSDOT specifications. The contractor is required to provide bid guarantees, and performance and payment bonds are mandatory for awards exceeding 150,000 dollars. All labor must comply with the Davis-Bacon Act per Wage Determination WA20260111 for Pierce County. Offers are due by October 18, 2026.

Bristol Alliance of Companies

POSTED

about 1 hour ago

DEADLINE

MI 2026-14 Emergency Heating and Air Conditioning Services

Solicitation # MI 2026-14

Adams and Associates, Inc., contracting for the U.S. Department of Labor, is soliciting bids for emergency heating and air conditioning services at the Miami Job Corps Center in Florida. The contract period runs from November 1, 2026, to October 31, 2027. The scope of work involves emergency HVAC repairs for units on the premises, with a requirement for bidders to provide separate hourly rates for non-emergency daytime services and emergency, weekend, and holiday services. As a federally funded facility, the Center is entitled to GSA pricing. Eligible bidders must be registered in SAM.gov with a valid Unique Entity ID and hold all necessary business and employee licenses for the State of Florida. Required submissions include a written bid on company letterhead valid for 90 days, a Vendor Questionnaire, W9, Authority to Commit, and a Certificate of Liability Insurance. Insurance mandates include Workers Compensation, Automobile Liability, and Comprehensive General Liability of at least $1,000,000 per occurrence. The contract is subject to Service Contract Act regulations, specifically Wage Determination No. 2005-2248, and Executive Order 13658. Award decisions will be based on the bidder deemed most responsible, with cost being a significant but not sole factor. Payment terms are NET 30 days from the invoice date, and invoices must include the BPA number and itemized lines. Additionally, employee time cards and payroll must be submitted for any service incident exceeding $2,500. All bids must be submitted via email to the Purchasing Department by October 23, 2026.

Miami Job Corps Center

POSTED

about 1 hour ago

DEADLINE

CBP6585 Bldg. 22 HVAC Replacement

Solicitation # CBP6585

Management & Training Corporation (MTC) is seeking bids for a subcontracting opportunity to remove and replace the HVAC equipment serving Building 22 at the San Diego Job Corps Center in Imperial Beach, California. This fixed-price, single lump sum contract has an estimated value between 0 and 25,000 dollars. The selected contractor must provide all labor, supervision, equipment, and materials to ensure a fully operational system, delivering two sets of operation and maintenance manuals and all applicable manufacturer and installer warranties upon completion. Bids are due by October 28, 2026, and must include a detailed cost breakout, proof of insurance, three references, and a mandatory physical site visit. The project is set aside for small businesses under NAICS 238220 and is subject to the Davis-Bacon Act, requiring compliance with prevailing wage rates and federal labor standards. For bids equal to or greater than 25,000 dollars, a bid bond of 20 percent is required, along with performance and payment bonds equal to 100 percent of the contract price from a surety with at least an A- rating. Required documentation for submission includes the SF 1413 Statement and Acknowledgment form, a Supplier Self-Certification packet for business classification under FAR 52.219-8, and a Unique Entity ID (UEI) number. Award decisions will be based on overall best value, with MTC serving as the sole judge of responsiveness.

San Diego Job Corps Center

POSTED

about 1 hour ago

DEADLINE

MJCC EXHAUST FANS BLD. 1429

Solicitation # mjcc-exhaust-fans-bld-1429

The Muhlenberg Job Corps Center, operated by Insights Training Group LLC, is soliciting fixed-price quotes from qualified HVAC and mechanical contractors to restore the exhaust fan and louver systems in Building 1429 in Kentucky. The project scope involves inspecting, repairing, and replacing various components across eight exhaust fans, including motors, louver actuators, thermostats, blades, and guards. All work must be performed in accordance with applicable building codes, manufacturer requirements, and general HVAC practices. The contract is set aside for small businesses, including VOSB, SDVOSB, WOSB, and HUBZone certified entities. Award will be granted to the responsible offeror who is determined to be technically acceptable and provides the lowest price. Proposals must be submitted by October 30, 2026, and must include line-item pricing for each fan, separate pricing for system-wide component replacements, and evidence of Kentucky state registration and licensing. Contractors must comply with Davis-Bacon Act labor standards, providing weekly certified payroll with every invoice. Additional requirements include providing proof of performance and payment bonding, maintaining Material Safety Data Sheets for all chemicals used, and adhering to OSHA and EPA regulations. Final payment is contingent upon the submission of lien releases from all subcontractors and material suppliers.

Muhlenberg Job Corps Center / Insights Training Group LLC

POSTED

about 1 hour ago

DEADLINE

1011 Turk Street Switchboard, UPS2, and HVAC Replacement

Solicitation # 1011-turk-street-switchboard-ups2-hvac-replacement

The City of San Francisco Public Works is seeking bids for the 1011 Turk Street Switchboard, UPS2, and HVAC Replacement project located in San Francisco, California. This solicitation, identified by Sourcing Event ID No. 0000011919, focuses on critical infrastructure upgrades including the replacement of the switchboard, UPS2 system, and HVAC units. The project is designated as a Small Business set-aside under NAICS code 238220. Interested parties should coordinate with the Estimating Department at Anderson Pacific Engineering Construction, Inc. for further details. The response deadline for this solicitation is October 14, 2026.

Anderson Pacific Engineering Construction, Inc.

POSTED

about 1 hour ago

DEADLINE

in about 17 hours

Cape Cod Space Force Microgrid Power Station - Bourne, MA

Solicitation # cape-cod-space-force-microgrid-power-station-bourne-ma

J&J Contractors, Inc. is soliciting bids for the Cape Cod Space Force Microgrid Power Station project located in Bourne, Massachusetts. The comprehensive scope of work encompasses a wide range of construction trades, including sitework, structural steel, masonry, roofing, metal panels, drywall, flooring, painting, and full mechanical, electrical, plumbing, and fire protection systems. This project is designated as an SBA set-aside, making it available to various small business categories, including disadvantaged, women-owned, HUBZone, and veteran-owned enterprises. Interested parties must adhere to Davis Bacon Wage Rates, and the project is exempt from sales tax. The response deadline for this solicitation is October 30, 2026. To receive a formal bid invitation via Building Connected, applicants should contact Rahul Maheshwari directly via email.

J&J CONTRACTORS, INC.

POSTED

about 1 hour ago

DEADLINE

Weapons Magazine

Solicitation # weapons-magazine

The Weapons Magazine solicitation, issued by Sauer Construction, focuses on comprehensive site development and foundational infrastructure in Virginia. The scope of work encompasses critical electrical and structural elements, including grounding, lighting protection, primary and secondary electrical systems, and the construction of access roads. Additionally, the project requires specialized geotechnical and civil work involving rigid inclusions, piling foundations, and general site work. This opportunity is designated as a small business set-aside, welcoming bids from various certified entities including Small Disadvantaged, Women-Owned, HUBZone, and Veteran-Owned Small Businesses. Interested parties must submit their responses by November 15, 2026. The project falls under NAICS code 236220, and inquiries should be directed to the primary point of contact, David Phillips.

Sauer Construction

POSTED

about 1 hour ago

DEADLINE

in about 1 month

AMC-0194 GPT ATCT Public Announcement

Solicitation # amc-0194-gpt-atct-public-announcement

This solicitation, issued by PTSI Managed Services Inc. (Parsons) for work in Mississippi, covers a wide range of facility repairs and reinforcements. The scope of work includes electrical corrections such as grounding and SPDS replacement, mechanical repairs involving copper piping and chilled water systems, and civil improvements including gate and foundation repairs. Additionally, the project requires structural maintenance like epoxy injection and painting, as well as architectural upgrades such as floor tile replacement, window sealing, and gutter installation. The estimated magnitude of construction is valued between 500,000 and 1,000,000 dollars. This opportunity is set aside for small businesses, including SDB, WOSB, HUBZone, and VOSB certifications, under NAICS code 236220. Interested parties must submit their responses by the deadline of November 18, 2026.

PTSI Managed Services Inc. (Parsons)

POSTED

about 1 hour ago

DEADLINE

in about 1 month

MJCC HVAC BLD. 1403-04 B HALL

Solicitation # mjcc-hvac-bld-1403-04-b-hall

Insights Training Group LLC, on behalf of the Muhlenberg Job Corps Center in Kentucky, is soliciting fixed-price quotes for an HVAC project at Building 1403-04 B Hall. The scope of work requires the contractor to furnish and install two Trane 4-ton 208 3-phase 17 SEER split systems, including 95 percent up flow furnaces, high-efficiency evaporator coils, and R-454B refrigerant. Additional requirements include the installation of new refrigerant line sets, exterior line hide, and condensate drain piping with pumps. The project must be completed within 45 days of award, and the contractor is responsible for providing all necessary training, operating, and maintenance manuals prior to the substantial completion walk-through. This is a small business set-aside solicitation open to VOSB, SDVOSB, WOSB, and HUBZone certified entities. To be technically acceptable, offerors must provide a fixed-price quote, evidence of Kentucky state licensing and registration, a completed New Vendor Profile and W-9, a minimum 90-day bid guarantee, and proof of ability to secure performance and payment bonding. Award will be granted to the responsible offeror with a technically acceptable quote and the lowest price. The contract is subject to Federal Acquisition Regulation (FAR) guidelines and Davis-Bacon Act labor standards, specifically Wage Determination Number KY20210041. Contractors must submit weekly certified payroll and a signed Statement of Compliance with every invoice to receive payment under net terms. Comprehensive insurance coverage is required, including a 5 million dollar umbrella liability policy and specific limits for bodily injury and property damage. All work must comply with local codes, OSHA, and EPA regulations, with a strict requirement for maintaining Materials Safety Data Sheets for all products used on site. Quotes are due by October 30, 2026.

Muhlenberg Job Corps Center / Insights Training Group LLC

POSTED

about 1 hour ago

DEADLINE

P084 NEXT GENERATION TORPEDO INTEGRATION LAB & P1016 Consolidated RDT&E Systems Facility – Newport, RI

Solicitation # p084-next-generation-torpedo-integration-lab-p1016-consolidated-rdte-systems-facility-newport-ri

J&J Contractors, Inc. is soliciting bids for the construction of the Next Generation Torpedo Integration Lab and the P1016 Consolidated RDT&E Systems Facility in Newport, Rhode Island. The project involves the development of a 12,920 square foot multi-story steel frame laboratory and office facility, as well as an optional 17,978 square foot laboratory facility. Construction features include shallow foundations, metal standing seam roofs, and exterior walls composed of masonry and metal panels. The scope of work encompasses comprehensive site preparations, including landscaping, parking, exterior lighting, and the installation of underground stormwater retention and utility systems. Additionally, the project requires the demolition of Building 1272T, a 548 square meter engineering facility. Pricing is requested across a wide array of trades, including demolition, abatement, concrete, masonry, structural and miscellaneous metals, millwork, roofing, drywall, flooring, painting, elevator installation, fire protection, plumbing, mechanical, electrical, sitework, and crane services. This is a small business set-aside solicitation subject to Davis Bacon Wage Rates and is exempt from sales tax. Interested parties must contact the primary point of contact to receive bid invitations and documents via Building Connected. The response deadline for this solicitation is November 30, 2026.

J&J CONTRACTORS, INC.

POSTED

about 1 hour ago

DEADLINE

in about 2 months

South Concourse Evolution (SCE) Bid Package 3

Solicitation # south-concourse-evolution-sce-bid-package-3

Hensel Phelps, acting as the General Contractor and Construction Manager, is soliciting bids for Bid Package 3 of the South Concourse Evolution project at the Seattle-Tacoma International Airport in Washington. This solicitation is designated as an 8A set-aside for Small Disadvantaged Businesses and encompasses ten distinct construction subsystems. The scope of work includes glass and aluminum systems, vertical transportation, the demolition and installation of passenger loading bridges, and various interior finishes for main electrical rooms, such as masonry, drywall, doors, frames, hardware, miscellaneous metals, firestopping, joint sealants, and paint and epoxy flooring. Budget ranges for these subsystems vary significantly, with the largest allocations for glass and aluminum systems and vertical transportation. The project is governed by a Project Labor Agreement and requires all subcontractors to provide a Workers Compensation Waiver of Subrogation. Bidders must submit their proposals via email using the official bid form and include a required bid bond. Successful awardees will be required to furnish Small Business Administration documentation and execute contracts using standard Hensel Phelps subcontract forms. The solicitation emphasizes the inclusion of diverse trade partners, specifically encouraging participation from small, disadvantaged, veteran-owned, service-disabled veteran-owned, and HUBZone businesses.

POSTED

about 1 hour ago

DEADLINE

in about 17 hours

CBP#9772 HVAC Air Handling Unit (AHU) and Ductwork Cleaning Services

Solicitation # CBP#9772

Management & Training Corporation (MTC) is seeking bids for a fixed-price, lump sum subcontracting opportunity, solicitation CBP#9772, to provide comprehensive HVAC air handling unit (AHU) and ductwork cleaning services at the Edison Job Corps Center in Edison, New Jersey. The project involves the cleaning of twelve AHUs, split between the Kilmer and Edison dormitories, including vacuuming, mechanical brushing, and rinsing of interior surfaces, housings, and plenums, as well as the thorough cleaning of all accessible heating and cooling coils. The estimated price range for this small business set-aside is between $100,000 and $250,000. Bids are due by October 16, 2026, at 3:00 PM EST and will be awarded based on overall best value. Prospective bidders must complete a mandatory physical site visit and submit a comprehensive proposal including a detailed cost breakout, three comparable references, proof of insurance, and a completed MTC Supplier Packet with a W-9 and self-certification. For bids equal to or exceeding $25,000, a bid bond guarantee of 20% of the base bid is required, and the awarded contractor must provide performance and payment bonds from a surety with at least an A- rating. The contract is subject to various federal regulations, including Davis-Bacon Act prevailing wage rates per wage determination NJ20250036, OSHA 30 CFR 1929 safety standards, and FAR clauses regarding small business utilization and the combating of trafficking in persons. Final payment is contingent upon the submission of weekly certified payroll reports and the approval of a Notice of Final Completion.

Management & Training Corporation

POSTED

about 1 hour ago

DEADLINE

CITY OF GREENFIELD WASTEWATER TREATMENT PLANT UPGRADE PROJECT

Solicitation # city-greenfield-wastewater-treatment-plant-upgrade-project

The City of Greenfield Wastewater Treatment Plant Upgrade Project involves the construction of a new 2.0 million gallons per day facility located at 41901 Walnut Avenue in Greenfield, California. The project scope is divided into four distinct phases: site preparation including soil stabilization and utility relocation; construction of the plant featuring a Membrane Bioreactor system, UV disinfection, and SCADA; decommissioning and demolition of existing facilities; and the completion of finish facilities including the Walnut Avenue extension. The total duration for the project is 915 calendar days, with a requirement to maintain existing plant services during the initial construction phases and adhere to General Order/NOA regulatory standards. Managed by C. Overaa & Co., the solicitation is open to various small and disadvantaged business enterprises, including DVBE, SDVOSB, WOSB, and DBE. A significant local hiring goal is established, targeting 50 percent of the total construction workforce from the Monterey Bay Area. Bids are due by October 28, 2026, following a mandatory pre-bid meeting on October 5, 2026. Subcontractors must utilize the Textura electronic invoicing system, accept the standard Overaa agreement without modification, and may be required to provide a performance and labor bond for 100 percent of the subcontract price.

C. Overaa & Co.

POSTED

about 1 hour ago

DEADLINE

CBP7792 Cafeteria Hot Water Heater Replacement

Solicitation # CBP7792

Sierra Nevada Job Corps Center

POSTED

about 1 hour ago

DEADLINE

Solicitation # sof-armory

Sauer Construction is seeking bids for the SOF Armory project located in North Carolina. This solicitation is open to all construction trades under NAICS code 236220. Interested parties must submit their responses by the deadline of November 30, 2026. This opportunity is specifically set aside for small businesses, including SBA certified Veteran Owned, Service-Disabled Veteran Owned, Women-Owned, and HUBZone small businesses. Primary inquiries and coordination for this project should be directed to Adam Houck via the provided contact email.

SAUER CONSTRUCTION

POSTED

about 1 hour ago

DEADLINE

in about 2 months

B221 Substation Switchgear Replacement

Solicitation # b221-substation-switchgear-replacement

The B221 Substation Switchgear Replacement project, managed by Sauer Construction, involves critical electrical upgrades and associated architectural improvements. The work is to be performed in Texas under NAICS code 236220. This solicitation is specifically set aside for small businesses, including designated small disadvantaged businesses, women-owned small businesses, HUBZone small businesses, and veteran-owned or service-disabled veteran-owned small businesses. Interested parties must submit their responses by October 15, 2026.

Sauer Construction

POSTED

about 1 hour ago

DEADLINE

ACT-1398 CRAC units, Sensors & Stands x5 - WJHTC NJ

Solicitation # act-1398-crac-units-sensors-stands-x5-wjhtc-nj

PTSI Managed Services Inc. (Parsons) is soliciting bids for the purchase of five Leibert Computer Room Air Conditioning (CRAC) units, including associated sensors and stands, to be utilized in New Jersey. This procurement is categorized under NAICS code 333415 and is specifically set aside for small businesses, including certified Veteran Owned, Service-Disabled Veteran Owned, Women-Owned, and HUBZone small businesses. The solicitation was posted on October 12, 2026, with a response deadline of October 21, 2026. Interested parties should coordinate with the primary point of contact, Sarah Vaughan, to submit their proposals before the closing date.

PTSI MANAGED SERVICES INC. (PARSONS)

POSTED

about 1 hour ago

DEADLINE