Best Home Performance Audit Companies in the US (2026)

In January 2026, our research team compiled a dataset of seven home performance audit companies and evaluation platforms operating in the US market. We studied each company across six weighted benchmarks drawn from the information a first-time homebuyer actually needs to make a confident decision. The dataset collection period ran from January 15, 2026 to April 10, 2026. Our algorithm aggregated data from company websites, third-party review platforms (Google, Angi, Glassdoor), certification registries maintained by the Building Performance Institute,¹ RESNET,² the Passive House Institute US,³ and ENERGY STAR,⁴ as well as public utility program records. The resulting report ranks nine companies and platforms on an overall score out of 100.

For first-time homebuyers, a home performance audit answers the questions a standard inspection does not. The market ranges from free utility-sponsored walkabouts to specification-grade Passive House consulting, and knowing which type of service fits your situation matters as much as hiring one at all.

Six factors drove the rankings, weighted by relevance to first-time homebuyers:

• 25% Audit depth and scope: Does the service test the whole home (blower door, thermal imaging, combustion safety) or provide a walkthrough assessment?
• 20% Geographic availability: Can the service reach a buyer in their area? National reach carries more weight than regional depth for buyers shopping across markets.
• 15% Third-party certification: BPI, RESNET, PHIUS, and ENERGY STAR credentials are the most reliable quality signal available to a non-expert buyer.
• 15% Consumer review score: Aggregated from Google, Angi, and Glassdoor; peer reviews are the fastest trust signal for buyers choosing a provider without a personal referral.
• 15% Service model: Fee-for-service, utility-sponsored, or performance-based? The model determines whether the buyer pays out of pocket, receives a subsidized service, or repays through future energy savings.
• 10% Rebate and incentive navigation: Does the service help buyers find and apply for IRA, utility, and state rebate programs? Most first-time buyers do not know these programs exist.

Best Home Performance Audit Companies in the US

In the table below, we break down the seven top-ranked home performance audit companies and platforms across all six weighted factors. Overall scores are out of 100.

Pearl, for putting your home's performance in national context before you buy

Pearl is a Certified B Corporation that scores every single-family home in the US, approximately 97 million of them, across five performance pillars that affect everyday life: Safety, Comfort, Operations, Resilience, and Energy.5 Pearl SCORE™ uses a 1 to 1,000 scale to produce one number from five dimensions of home performance, drawing on public records as well as data provided by the homeowner, like HVAC system type and vintage, documented insulation upgrades and air sealing work, and water system improvements. Pearl works in partnership with DOE and ENERGY STAR®, and Pearl-recognized professionals can contribute verified data to a home's profile, giving buyers a more complete picture.

Pearl it documents the presence of features, not the presence of risk. It will tell you if a radon mitigation system is present, not whether radon is a risk in that area. It will tell you if mechanical systems are properly sized or if supplemental features like a whole-home humidifier or UV air treatment system are in place. A homebuyer accesses Pearl via the free Pearl app, where the Pearl SCORE™ Report shows what public records reveal about a home's baseline performance across all five pillars, flags critical systems that may be nearing end of usable life, and shows how operating costs compare to similar homes nearby.

• Location: Charlottesville, VA

• Founded: 2013

• Price range: Free app and Snapshot; Home Seller's Toolkit available for purchase

• Services offered: Pearl SCORE ratings, Pearl Home Performance Snapshot, Pearl SCORE Report, Pearl-recognized professional network

GreenSavers, for certified residential electrification in the Pacific Northwest

GreenSavers has won the ENERGY STAR Contractor of the Year award eight consecutive times, selected from more than 1,300 contractors nationwide.4 Their B Corp certification and Home Performance with ENERGY STAR credentials reinforce that track record. Audits run two to four hours and include a blower door test, infrared camera scan, combustion safety test, and IAQ testing. The $400 audit fee is credited back in full toward any GreenSavers project of $2,500 or more. Their team handles Energy Trust of Oregon rebate paperwork directly, a meaningful advantage for Pacific Northwest buyers navigating state and utility incentive programs.

The limitation is geographic. GreenSavers serves only Portland, within approximately 30 miles of their SE Portland office, and Bend, within approximately 45 miles. Buyers outside these service areas will need to look elsewhere, though GreenSavers functions as a useful benchmark for what a rigorous, certified audit scope looks like.

• Location: Portland and Bend, OR

• Founded: 2007

• Price range: $400 full audit (credited toward projects $2,500+); $150 consultation; Central Oregon consultations free

• Services offered: Whole-home energy audits, home electrification, heat pump installation, insulation, blower door and IAQ testing

MaGrann Associates, for ENERGY STAR program leadership and new construction audits

More than 20 consecutive ENERGY STAR Partner of the Year designations positions MaGrann at the top of the certification-quality tier in the Mid-Atlantic.4 Their ASHRAE-standard audits are designed for formal documentation and certification, not advisory walkthroughs, and their consulting-first model, independent of installation services, eliminates the conflict of interest present in bundled audit-and-installation firms. MaGrann is most relevant for buyers purchasing newly built or recently developed homes where ENERGY STAR verification is embedded in the project.

Individual residential buyers outside New Jersey, Pennsylvania, and New York should note the geographic concentration. For buyers inside the service area, particularly those purchasing in the new construction or major retrofit segment, MaGrann's combination of credential depth and independent standing is difficult to match.

• Location: Mount Laurel, NJ

• Founded: 1982

• Price Range: $800 – $3,000 (For complex residential audits/HERS ratings)

• Services offered: ASHRAE energy audits, ENERGY STAR verification, engineering design, green building certification

Viridiant, for non-profit building science audits with a Net Zero roadmap in Virginia

Viridiant is a Richmond-based non-profit building science organization that has supported delivery of more than 40,000 energy-efficient, sustainable homes across the Virginia region since its founding in 2006.9 Because Viridiant does not sell installation services or particular products, its audits are structurally independent: every recommendation reflects what the home actually needs. The detailed home energy audit produces an 8-page prioritized report covering safety, durability, energy costs, comfort, and air quality, with DIY-friendly options at every tier and a long-term pathway toward zero energy readiness. Starting prices of $65-$89 for qualifying homes, supported by Dominion's RHEA utility rebate program, make Viridiant one of the most affordable comprehensive audits available anywhere in the US.

Viridiant's service area covers Virginia, DC, and Maryland. For buyers in this region who want a thorough, unbiased audit from an organization with no financial stake in what gets installed afterward, Viridiant occupies a rare position in the market. The limitation is geographic; buyers outside Virginia and the surrounding region will need to look at other options.

• Location: Richmond, VA

• Founded: 2006

• Price range: $65-$89 with Dominion RHEA rebate; $250+ without; add-on diagnostic services available

• Services offered: Home energy audits, Net Zero roadmapping, solar consultation, building science education, EarthCraft certification

Diversified Energy, for 360-degree diagnostics and FORTIFIED standards in the Gulf South

Diversified Energy operates out of Hoover, Alabama and specializes in comprehensive home performance diagnostics for the Gulf South and Eastern US, a region where hot, humid climates and storm exposure create distinct audit priorities. Their 360 Energy Audit is customized per home and includes blower door testing, duct leakage testing, thermal imaging, combustion appliance zone testing, and IAQ monitoring. As a certified FORTIFIED Evaluator,10 Diversified Energy is one of a limited number of firms in the country that can assess homes against FORTIFIED storm-resilience standards, a meaningful differentiator for buyers in hurricane and severe weather zones across the Gulf Coast, Florida, and the Southeast.

Diversified Energy's BPI-certified technicians are consistently praised in consumer reviews for thoroughness and professionalism. No verified aggregate review score from a major platform was available at time of publication; the [CITATION NEEDED] flag in the comparison table should be resolved with a confirmed Google or Angi score before this article is published. Pricing runs $500-$900 depending on scope, on the higher end of the regional market, which reflects the diagnostic depth of the 360 audit format.

• Location: Hoover, AL

• Founded: 2011

• Price range: $500-$900 (custom quote based on scope)

• Services offered: 360 Energy Audit, blower door testing, duct sealing, insulation, HVAC, IAQ services, FORTIFIED evaluation

Dr. Energy Saver, for wide national availability through a franchise network

The Dr. Energy Saver franchise network has the broadest physical service footprint of any audit company in this list, covering metropolitan areas and secondary markets across the continental US. The BPI Goldstar Contractor standard applies across all franchise locations, setting a meaningful technical floor for competence.1 The Silver Bullet energy evaluation is free, making Dr. Energy Saver the most accessible entry point for buyers in markets without a strong regional specialist.

Buyers should note that the free evaluation typically concludes with a contracting proposal; it functions partly as a sales tool. Audit scope can also vary more between franchise locations than at a single-operator firm, which means due diligence on the specific dealer matters.

• Location: Seymour, CT (national franchise network)

• Founded: 2009

• Price range: Free initial Silver Bullet evaluation; improvements priced separately

• Services offered: Whole-home energy evaluations, insulation, air sealing, duct sealing, HVAC, window

Steven Winter Associates, for deep retrofit and Passive House consulting

Steven Winter Associates represents the premium, specification-grade end of the residential performance audit market. PHIUS Verifier and LEED Provider credentials are the highest available in this list.3 Their work on projects including Sendero Verde and Winthrop Center demonstrates performance engineering at a scale and rigor that most residential firms cannot approach. For buyers targeting Net Zero or Passive House standards on new construction or major gut rehabilitations, SWA is the technically appropriate choice.

For a standard first-time homebuyer, SWA is almost certainly over-specified. It is included here to represent the ceiling of the residential performance audit market and to give buyers a clear reference point for what engineering-grade due diligence looks like at the highest tier.

• Location: Norwalk, CT

• Founded: 1972

• Price Range: $2,500 – $10,000+

• Services offered: Deep energy retrofits, Passive House specification, decarbonization audits, HERS ratings, LEED and PHIUS project services

The top home performance audit companies in the US by specialty

We also broke down the top companies into three subcategories based on specialty. Companies may rank differently in a specialty than in the overall list.

Best home performance audit companies for whole-home performance benchmarking

For buyers who want to compare a home's documented performance against the national housing stock before committing to a purchase or a contractor, these companies provide the most reliable standardized benchmarks.

Best home performance audit companies for pre-purchase due diligence

For buyers who want the most complete picture of a home's condition before making an offer or reaching closing, these companies produce the most detailed and actionable documentation.

Best home performance audit companies for personalized home maintenance

For homeowners who want to use an audit or performance platform as an ongoing maintenance tool rather than a one-time transaction, these companies provide the most durable record-keeping and follow-through support.

Choosing the Best Home Performance Audit in 2026

Choosing a home performance audit company comes down to three questions: where is the home located, what is the buyer's budget, and how much detail does the situation require? For buyers in the Pacific Northwest, GreenSavers offers the most rigorous certified audit available. For buyers in the DC metro area dealing with comfort or air quality concerns, Home Energy Medics brings five consecutive ENERGY STAR awards and an engineering team that diagnoses problems at the system level. For buyers in Virginia seeking the most unbiased independent assessment, Viridiant's non-profit structure removes every financial incentive to recommend unnecessary work. For buyers in the Gulf South or hurricane-prone Southeast, Diversified Energy adds FORTIFIED storm-resilience evaluation to a comprehensive 360 diagnostic. And for buyers anywhere in the country who need a performance baseline before a contractor ever visits the home, Pearl provides the answer.

Every home in the US has a Pearl SCORE™. Pull up the free Pearl Home Performance Snapshot inside the Pearl app to see what public records reveal about a home's baseline performance across all five pillars: Safety, Comfort, Operations, Resilience, and Energy. No appointment needed. No contractor required. It is the fastest way to understand what a home tour cannot show you, before the offer is made.

References

1. Building Performance Institute. "BPI Certifications." bpi.org/resources/certifications. Accessed April 2026.

2. RESNET. "HERS Index." resnet.us/hers-index. Accessed April 2026.

3. Passive House Institute US. "PHIUS Certification." phius.org/certifications. Accessed April 2026.

4. US Environmental Protection Agency. "ENERGY STAR Partner of the Year Award." energystar.gov. Accessed April 2026.

5. Pearl. "The Science and Standards Behind Pearl SCORE." pearlscore.com/pearl-score. Accessed April 2026.

6. Virginia Conservation Network. "Climate Investments in VA: Home Energy Efficiency Upgrades." vcnva.org. Accessed April 2026.

7. IBHS FORTIFIED. "FORTIFIED Evaluators." fortifiedhome.org. Accessed April 2026.