HVAC Energy Efficiency for Government and Public Facilities

Key takeaways

• Government-owned buildings used about 23% of commercial-building energy in EIA's 2018 CBECS.
• Fans and cooling are about 35% of electricity in government-owned buildings.
• EISA Section 432 requires federal energy and water evaluations of covered facilities every four years.
• ESPCs need no up-front capital and require annual M UESCs work through the serving utility.
• EO 14057 was revoked in January 2025; statutory requirements still apply.

Government buildings range from courthouses and office towers to fire stations, jails, labs and maintenance depots. They share a few traits: long ownership horizons, tight capital budgets, public accountability for every dollar, and procurement rules that shape what can be bought and how. This guide covers how public facilities use HVAC energy, the federal framework (including the Federal Energy Management Program, energy savings performance contracts and utility energy service contracts), where efficiency is lost, and how to pilot a measure in a way that will stand up to an auditor.

The public-sector energy profile

EIA's 2018 Commercial Buildings Energy Consumption Survey (CBECS) reports energy use by ownership. Government-owned buildings used 1,569 trillion Btu of major fuels, about 23% of the 6,787 trillion Btu used by all commercial buildings.

Source: EIA 2018 CBECS Tables E1 and E5. CBECS covers commercial-type buildings, so treat these figures as indicative of the public sector rather than a full inventory.

Across all government-owned buildings, cooling and fans account for about 35% of electricity (88 of 254 billion kWh), and space heating is about 38% of all fuel (603 of 1,569 trillion Btu). Local government, which includes most public schools, is the largest group by far. (Schools have their own guide: schools and universities.)

The federal framework

FEMP and EISA Section 432

The Department of Energy's Federal Energy Management Program (FEMP) supports agencies in meeting federal energy requirements. Section 432 of the Energy Independence and Security Act of 2007 (EISA) requires agencies to complete comprehensive energy and water evaluations of all covered facilities every four years, implement identified measures, follow up on implemented projects and benchmark metered buildings. These evaluations are where most HVAC measures are first identified.

Executive orders: what changed

Executive Order 14057, which set federal sustainability and building-emissions goals, was revoked by Section 2 of Executive Order 14148 on January 20, 2025. As of October 2026, the statutory requirements, including EISA Section 432 and the contracting authorities below, remain in law. Federal facility managers should confirm current agency-level goals with their sustainability office, because internal targets have changed.

Energy savings performance contracts (ESPCs)

FEMP describes ESPCs as allowing federal agencies to procure energy savings and facility improvements with no up-front capital costs or special appropriations from Congress. An ESPC is a partnership between an agency and an energy service company (ESCO): the ESCO finances and installs the measures, and the agency repays the cost from the resulting savings, which the ESCO guarantees. FEMP lists four required measurement and verification (M&V) activities: determining baselines and estimated savings, developing the M&V plan, the post-installation M&V report, and annual M&V. In FEMP's words, an annual M&V report from the ESCO is required to substantiate savings guarantees.

Utility energy service contracts (UESCs)

A UESC is, per FEMP, a limited-source acquisition between a federal agency and its serving utility for energy management services, including efficiency improvements and demand reduction. It is authorized under the Energy Policy Act of 1992 (42 U.S.C. 8256). The agency may use any combination of appropriations and financing, and the utility partner may provide financing.

State and local governments

Most states have their own performance-contracting statutes for state agencies, cities, counties and school districts. DOE's Better Buildings ESPC Accelerator worked with states, local governments and K-12 schools to expand performance contracting, and it catalyzed $2 billion of public-sector efficiency investment from January 2013 to December 2016. Check your state's statute for term limits, M&V and procurement rules; procurement counsel should confirm what applies.

Where public-facility HVAC loses efficiency

• Deferred maintenance. When capital and operating budgets are tight, coil cleaning, tube brushing and controls calibration slip.
• Aging equipment run past its design life because replacement requires an appropriation.
• 24/7 sites such as jails, emergency operations centers, police and fire stations, where HVAC never rests. CBECS puts "public order and safety" buildings at 21 billion kWh of electricity in 2018, with cooling and fans about a third of it (7 billion kWh).
• Heat-transfer loss inside equipment, including the oil film that builds up on internal coil surfaces over years of operation. See what oil fouling is.
• Controls that no one owns, especially after staff turnover.

Public portfolios also tend to be mixed: a single city may own a modern office tower with a chilled-water plant, dozens of fire stations on split systems, recreation centers with rooftop units and a jail that runs around the clock. That variety is an advantage for a pilot program, because a handful of representative units can tell you which building types respond best before you commit a capital or performance-contract budget to the whole portfolio.

Practical measures for public facilities

1. Use the audit cycle. Feed every HVAC finding from EISA 432 evaluations (or state equivalents) into a ranked list with estimated savings and cost.
2. Low-cost operations first: schedules, setpoints, economizers and sensor calibration.
3. Maintenance that restores capacity: condenser tube cleaning, coil cleaning, refrigerant charge checks.
4. Bundle measures into an ESPC or UESC so quick-payback items help finance longer-payback ones. See payback, ROI and NPV.
5. Extend equipment life where sensible rather than replacing on age alone; see repair, retrofit or replace and the HFC phasedown and existing equipment.

How a no-downtime treatment fits

CryogenX4 reports that CRYOGENX4 is a one-time application installed while the system runs, with no downtime and no system modifications, typically in a single day, by trained and certified technicians. According to the company, it lifts insulating oil film from internal coil surfaces and returns it to the sump, conditions the metal for better heat transfer and improves oil lubricity. The company states it is intended to last for the remaining life of the equipment, and that Intertek tested and certified its compatibility with all refrigerants and refrigerant oils.

The company also states that its technology was tested under AHRI, ASHRAE, ASTM, API, ANSI and EPA standards, and that a first-generation Tri-S product was tested under the DOE Federal Energy Management Program. Read that carefully: testing under a program is not the same as a FEMP endorsement or a savings guarantee for your site, and contracting officers should ask for the underlying reports. The company states energy savings of up to 30% and a typical payback of 12 to 36 months; results vary by equipment condition. Inside an ESPC or UESC, any measure's savings must be verified under the project M&V plan, which is exactly the discipline that separates real results from claims. For the company's public-sector overview, see CryogenX4 for government.

Documents to request from any HVAC efficiency vendor

Public buyers are accountable for the evidence behind a purchase. Before a pilot or a contract, ask for:

• Safety data sheets and a description of what is added to or changed in the system
• Compatibility test reports for your refrigerants and oils, with the lab named
• Any third-party test reports referenced in marketing, in full, with test methods
• Technician training and certification records, including EPA Section 608 certification for anyone handling refrigerant
• A proposed M&V plan with metrics, baseline period and normalization method
• Insurance certificates and the effect, if any, on OEM warranties or service contracts

Our vendor due-diligence checklist expands on each item.

How to pilot and verify

1. Write the M&V plan first. Define the boundary, metrics (kW, kW per ton, run hours), baseline period and normalization method. IPMVP Options A and B are typical for single systems; see IPMVP options explained.
2. Select representative units that run long hours, such as a chiller at a 24/7 facility or rooftop units at an administrative building.
3. Baseline for several weeks with dedicated power logging and temperature sensors.
4. Install, then measure the post period under comparable conditions and normalize for weather.
5. Document for the file: data, calculations and assumptions in a form an inspector general or auditor can follow.

One practical note for public agencies: a pilot is often small enough to fall under simplified acquisition or a facilities maintenance budget, while a portfolio rollout usually is not. Structuring the pilot so its data and M&V plan can be reused in a later competitive procurement, ESPC or UESC saves months. Confirm thresholds and methods with your contracting officer.

The pilot program guide and how to read an M&V report cover the rest.

Next step

Pull the HVAC findings from your most recent energy evaluation, pick one long-running system and draft a one-page M&V plan for it. When you are ready to discuss a pilot, contact CryogenX4 with the equipment schedule.

Frequently asked questions

Do federal facilities still have energy requirements after EO 14057 was revoked?

Yes. EO 14057 was revoked on January 20, 2025, but statutory requirements such as EISA Section 432 evaluations, benchmarking and follow-up remain. Confirm current agency goals with your sustainability office.

What is the difference between an ESPC and a UESC?

An ESPC is a contract with an energy service company that guarantees savings and is repaid from them, with required annual M&V. A UESC is a limited-source contract with the agency's serving utility, which may also finance the project.

Can an HVAC treatment be included in an ESPC?

An ESCO can include any measure it is willing to guarantee and verify under the project M&V plan. Whether a specific product is included is the ESCO's and agency's decision, based on evidence for the site.

Does 'tested under FEMP' mean FEMP endorses a product?

No. Testing under a program describes how a product was evaluated, not an endorsement. Ask for the underlying test reports and judge them on their methods.

Sources

1. 2018 CBECS Table E1. Major fuels consumption by end use — U.S. Energy Information Administration
2. 2018 CBECS Table E5. Electricity consumption by end use — U.S. Energy Information Administration
3. Energy Savings Performance Contracts for Federal Agencies — U.S. DOE Federal Energy Management Program
4. Measurement and Verification Activities Required in an Energy Savings Performance Contract — U.S. DOE Federal Energy Management Program
5. About Utility Energy Service Contracts — U.S. DOE Federal Energy Management Program
6. Energy and Water Audits for Federal Buildings — U.S. DOE Federal Energy Management Program
7. Executive Order 14057 program page — FedCenter
8. Energy Savings Performance Contracting Accelerator — U.S. DOE Better Buildings Solution Center
9. International Performance Measurement and Verification Protocol (IPMVP) — Efficiency Valuation Organization