The federal government owns and leases hundreds of thousands of buildings, and almost every one of them has air handlers, chillers, boilers, and rooftop units that need maintenance, repair, and replacement. That is recurring HVAC and mechanical work, paid on time, often on multi-year contracts. The catch is that the government does not buy the way a property manager does. It buys through registrations, codes, and set-asides, and if you do not speak that language you never see the opportunity. Here is the real path.
Start with your NAICS codeEverything in federal contracting hangs off your NAICS code, the six-digit number that tells contracting officers what you do. For most HVAC and mechanical shops the code is 238220, Plumbing, Heating, and Air-Conditioning Contractors. It covers installing, maintaining, and repairing the systems that heat, cool, and ventilate buildings.
Your NAICS code does more than describe you. It sets the size threshold that decides whether you qualify as a small business for set-aside contracts. For 238220, the SBA size standard is $19 million in average annual receipts, measured over a trailing period (currently five years for receipts-based standards). If your shop is at or under that line, you are "small" for these opportunities, and a large share of HVAC work falls under that ceiling.
You can register more than one NAICS code in SAM.gov, and you should add every code for work you actually perform. Do not add codes for work you do not do. Contracting officers run a responsibility determination before award, and registering under a code you cannot back up can trigger debarment.
Register in SAM.gov firstBefore any agency can pay you, you have to be registered in SAM.gov (the System for Award Management). Registration is free, takes a couple of weeks the first time, and produces your Unique Entity ID (UEI), the identifier that ties together your registration, your set-aside status, and your eventual awards. No active SAM.gov registration means no federal contract. Full stop.
While you are in there, set your size and any socioeconomic statuses correctly, because that is what makes set-aside opportunities visible and winnable.
Who actually buys HVAC and mechanical workThe buyers are the agencies with the most square footage to keep running.
- Department of Veterans Affairs (VA). The VA runs a huge hospital and clinic network and contracts steadily for HVAC maintenance, repair, and emergency service. A recent VA Network Contracting Office 17 solicitation in Texas, for example, sought a service-disabled veteran-owned firm to handle preventive maintenance and corrective repairs on air handler units, including filters and a written PM program, with requirements for ASHRAE compliance and NATE-certified technicians. That is a typical scope and a typical set of qualifications.
- General Services Administration (GSA). GSA manages federal buildings and runs the GSA Schedule (Multiple Award Schedule), Facilities category 03FAC, plus large facilities-maintenance vehicles like BMO. Getting on a Schedule is a longer process, but it puts you in the catalog agencies shop from.
- Army Corps of Engineers and the broader DoD. Military installations carry constant mechanical and facilities-maintenance demand.
The point: this is not a niche. Facilities and mechanical work is one of the steadiest categories the government buys, and the buyers are predictable.
The set-asides that apply to youFederal set-asides reserve certain contracts for qualifying small businesses, and they are the fastest way for a smaller HVAC shop to compete against fewer bidders. The main ones:
- Small business set-asides for any firm under the $19M 238220 threshold.
- 8(a) for socially and economically disadvantaged owners, a nine-year development program with sole-source potential.
- WOSB / EDWOSB for women-owned and economically disadvantaged women-owned small businesses.
- SDVOSB for service-disabled veteran-owned firms. The VA in particular gives strong preference here, and the example solicitation above was an SDVOSB set-aside.
- HUBZone if your business is located in, and employs people from, a historically underutilized business zone.
You do not pick a set-aside the way you pick a product. You qualify for the ones that match your ownership and location, then get certified so the status shows up on your SAM.gov profile and in front of contracting officers. If you are not sure which ones fit, our certification guides walk through eligibility for each, and CertifyAll handles the paperwork and submissions across multiple programs once you know what you qualify for.
Where certification actually pays off
A certification is not a marketing badge. It is a filter. When a contracting officer sets a contract aside for SDVOSB or WOSB firms, your certified status is what makes you eligible to bid at all. On a small business set-aside, your verified SAM.gov size does the same job. Certification narrows the field of competitors, which is the whole point.
Where the opportunities liveActive solicitations are posted on SAM.gov under Contract Opportunities. You can filter by NAICS code (238220), by set-aside type, by agency, and by place of performance, so you see only the HVAC work near you that you can actually bid. Set up saved searches and check them on a schedule. The opportunities with the shortest response windows are the ones competitors miss.
For Schedule-based work, GSA eLibrary and GSA's "find opportunities" pages show what is being bought through the Multiple Award Schedule.
The prime versus subcontract decisionYou do not have to win a prime contract on day one. Many large facilities and construction contracts are held by big primes who are required, under FAR clause 52.219-9, the Small Business Subcontracting Plan, to hit goals for small-business and diverse-supplier participation. That requirement is leverage for you.
Subcontracting is the realistic entry point for most shops. You perform a defined scope, build past performance the government can verify, and get paid without carrying the full compliance and bonding burden of a prime contract. After a few clean subcontracts, primes call you back and your prime bids get credible.
Finding the right primes is the hard part, because the subcontracting demand is buried inside award data. Our subcontract finder surfaces primes with active subcontracting obligations in mechanical and facilities work, so you can pitch the companies that actually have a quota to fill.
Make your pitch concreteWhether you go prime or sub, agencies and primes evaluate the same things: relevant past performance, technical capability, certifications, and price. Your capability statement is the one-page document that carries all of it, and a generic version gets ignored. Lead with mechanical and facilities scopes, name the systems you service (air handlers, chillers, boilers, controls), list certifications like NATE for your techs and your federal set-aside statuses, and include your NAICS codes and UEI. Build one with the capability statement builder so it reads the way a contracting officer expects.
Your next stepYou do not need to do all of this at once. Get your SAM.gov registration active under NAICS 238220, confirm whether you qualify as small under the $19M standard, and figure out which set-asides match your ownership. Then, before chasing prime bids, look at who already holds the big facilities contracts in your area and which of them owe small-business subcontracting goals. That last piece is the quietest, highest-odds way in, and it's exactly what the subcontract finder is built to surface.
