What the government actually buys from HVAC contractors
Public agencies own an enormous amount of building stock and almost none of it is new. Schools, courthouses, VA hospitals, military barracks, county offices, water treatment plants — every one of them has mechanical systems that fail, age out, or fall out of code compliance, and none of those buildings can simply be sold when the chiller dies.
That is why HVAC is one of the steadiest trades in public work. It is not project-driven the way new construction is. It is failure-driven and schedule-driven, and both of those keep happening regardless of the budget cycle.
Right now our corpus holds 422 open contracts under NAICS 238220, the code for HVAC and commercial refrigeration contractors. The work clusters into a few recognisable shapes:
- Equipment replacement
- chillers, boilers, rooftop units, air handlers. Usually the largest single awards and often summer-scheduled around school calendars.
- Preventive maintenance contracts
- recurring, multi-year, lower margin but predictable, and the easiest way to become the incumbent.
- Mechanical retrofits and controls upgrades
- often driven by energy efficiency mandates rather than equipment failure.
- Emergency and on-call repair
- smaller dollar values, frequently under simplified acquisition, and the fastest lane for a firm with no federal past performance.
How much of it is reserved for small business
This is the number that surprises most mechanical contractors. Of the 422 open HVAC contracts we track, 263 carry a set-aside requiring small-business status of some kind — meaning large national mechanical firms are excluded from bidding them at all.
That is close to half the market, and small-business status is not a certification you apply for and wait months on. For most trades it is a size standard you self-certify against when you register in SAM.gov. If your annual receipts are under the threshold for 238220, you already qualify; you simply have to be registered to be eligible.
The practical order of operations is therefore boring and correct: register in SAM.gov first, bid set-aside work immediately, and only then consider whether a specialised certification is worth the paperwork.
Who is buying
The Department of Defense is the largest single buyer of HVAC work in our corpus, followed by the Department of Veterans Affairs and the Department of the Interior. That ordering matters more than it looks.
Contractors routinely skip defence work because they picture weapons programmes and cleared facilities. In practice DoD is a landlord with an enormous property portfolio — barracks, hangars, mess halls, administrative buildings — and it buys the same rooftop units your commercial customers buy. The VA is similar: a hospital system with hospital mechanical needs, and one that runs a large volume of set-aside work for veteran-owned firms.
Below the federal layer sit the buyers most HVAC firms actually live off: school districts, county facilities departments, municipal building services and state universities. Those publish on state and local portals rather than SAM.gov, which is why a federal-only search misses most of the work within driving distance of your shop.
Those buyers are the reason a federal-only routine underestimates this trade so badly. YNTELRADAR carries the layer underneath: school districts, county facilities departments, municipal building services and state universities pulled in alongside SAM.gov, each notice scored against your codes and your service radius with the reason written out — so the chiller replacement two towns over arrives in the same morning feed as the VA hospital job, instead of not arriving at all.
The clock, and why mechanical work punishes a slow search
Across our open HVAC contracts, the median window from publication to bid deadline is about three weeks. That is enough time — but only if the clock starts when the notice is published rather than when you happen to find it.
Mechanical bids need a site visit, equipment pricing from a distributor, and often a manufacturer quote with its own lead time. Losing the first week to a portal you check on Fridays means the site visit is gone, the distributor quote is rushed, and you are pricing defensively. Most contractors do not lose these jobs on price. They lose them by arriving with a week left and deciding not to bid at all.
Site visit dates are also the one deadline before the deadline. Many mechanical solicitations make attendance mandatory, and missing it disqualifies you outright no matter how good your number is.
What disqualifies HVAC bidders before price is read
Mechanical work carries more compliance surface than most trades, and nearly all of it is checkable in advance.
- Bonding — construction-classified work above the threshold requires payment and performance bonds. Get a bonding line established before you find a job that needs one; it is not a same-week process.
- Prevailing wage — Davis-Bacon on federal construction and state equivalents on state work. Your labour rate is set by determination, not by your payroll. Pricing at your commercial rate is how a bid comes in confidently and wrongly low.
- EPA Section 608 refrigerant certification for your technicians, plus state mechanical licensing in the jurisdiction of the work — which is not always the jurisdiction of your office.
- Mandatory site visit attendance, and acknowledgement of every amendment. An unacknowledged amendment is grounds for rejection on its own.
- An active SAM.gov registration with your UEI. It expires annually, and a lapsed registration makes you ineligible for award on a bid you have already spent a week writing.
What SAM.gov alone will not do for you
For federal HVAC in one state, SAM.gov is free and it is complete. Use it.
What it will not do is the rest — and the rest is most of the money. The school district, the county facilities department, the transit authority and the state university each publish somewhere else, on their own portals, with far fewer bidders. And no portal reads the chiller spec, the mandatory walk-through or the wage determination out of a two-hundred-page PDF for you.
That is the gap YNTELRADAR closes. It is the most complete government contracting platform on the market, and the only one that takes you from found to WON: federal through SAM.gov, every state portal, and the city, county and school-district sites, in one feed — each notice scored against your business with the reasons written out, the solicitation documents read for you, the price built from what the government actually paid on comparable awards, the companies that won them named, your proposal drafted, and a step-by-step plan that tracks the bid to its result. In English and in Spanish.
Free covers the federal slice. This covers the trade.
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Frequently asked
What NAICS code should an HVAC company use?
238220 (Plumbing, Heating, and Air-Conditioning Contractors) is the primary code. Depending on your work you may also register 811310 for commercial equipment repair, or 238210 if you self-perform meaningful electrical scope. Register every code you can genuinely perform — it costs nothing and each one is a separate search buyers use to find you.
How much HVAC work is set aside for small business?
Of the 422 open HVAC contracts we currently track, 263 carry a set-aside requiring small-business status. Small-business status is self-certified against the SBA size standard when you register in SAM.gov, not applied for.
Do I need a bond to bid government HVAC work?
For construction-classified work above the threshold, yes — payment and performance bonds. Smaller service and repair contracts frequently require none. Establish a bonding line before you need it; arranging one after you find the job usually means missing the deadline.
Does prevailing wage apply to HVAC contracts?
On federal construction work, Davis-Bacon rates apply and are published with the solicitation. Most states have their own equivalent for state-funded work. Service contracts may fall under the Service Contract Act instead. Read the wage determination attached to the solicitation and price from it, not from your commercial rates.
Is defence work realistic for a small mechanical contractor?
Yes, and it is the largest single source of open HVAC work in our corpus. Military installations are buildings that need boilers, chillers and rooftop units like any other. Much of it is set aside for small business, and base facilities work rarely requires a security clearance.
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Keep reading
- Government Contracts by State: Where the Work Actually Is
- How Much Government Work Is Reserved for Small Business Right Now
- How Long Do You Actually Have to Bid on a Government Contract? 13 Days
- How Much Do Government Construction Contracts Pay? The Real Medians
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