Last updated: April 2026
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New York is a state of extremes when it comes to energy. A brownstone in Brooklyn faces different problems than a colonial in Buffalo. One fights cooling loads and steam radiator inefficiency. The other battles negative-degree wind chill forcing its way through 1940s building envelope. But both share the same painful reality: New York electricity rates average $0.22/kWh — 65% above the national average of $0.13/kWh (EIA, 2025). Natural gas prices aren't much better, running 20–30% above the U.S. median.
That cost gap is exactly why a home energy audit in New York pays for itself faster than almost anywhere else in the country. The higher your utility rates, the more each efficiency improvement is worth. A $400 audit that identifies $1,800 in annual savings? That's a 4.5x return in year one alone.
But New York's audit landscape has changed significantly heading into 2026. NYSERDA restructured its Residential Energy Assessment Program in late 2025, shifting toward virtual assessments and tighter integration with its rebate pipeline. New federal incentives under the Inflation Reduction Act have matured. And the state's aggressive Climate Leadership and Community Protection Act (CLCPA) — targeting 70% renewable electricity by 2030 — is pushing building electrification harder than ever.
This guide covers everything: what an audit actually includes, what it costs across the state, who the best auditors are, which rebates to stack, and how to turn audit findings into real savings.
What Does a Home Energy Audit Actually Include in New York?
A legitimate energy audit — not the free walkthrough where someone changes your lightbulbs and hands you a pamphlet — follows BPI (Building Performance Institute) or RESNET (Residential Energy Services Network) standards. In New York, most auditors hold BPI Building Analyst certification, which NYSERDA requires for participation in its incentive programs.
Here's what a comprehensive Level 2 audit covers in a typical New York home:
Blower Door Testing
A calibrated fan mounts in your exterior door and depressurizes the house to 50 Pascals. The auditor measures air changes per hour (ACH50) to quantify exactly how leaky your building envelope is. The 2024 IECC target for new construction is 3.0 ACH50. Most New York homes built before 1980 — and that's a huge portion of the state's housing stock — test between 10 and 20 ACH50.
That leakage matters. The Department of Energy estimates air infiltration accounts for 25–30% of residential heating and cooling energy use (DOE, 2024). In a state where heating dominates the energy budget for 7+ months per year, those gaps around windows, rim joists, and attic hatches are hemorrhaging money.
New York's older housing stock makes blower door testing especially revealing. Pre-war buildings in New York City, balloon-frame colonials in Westchester, and 1960s-era ranches on Long Island all have characteristic air leakage patterns that a trained auditor can diagnose and prioritize.
Infrared Thermography
Thermal imaging cameras reveal temperature differentials in walls, ceilings, and floors that are invisible to the naked eye. Missing insulation, thermal bridges at framing members, moisture intrusion from ice dams — all show up as color variations on the scan.
This is particularly valuable in New York, where many homes have had partial insulation upgrades over the decades. A thermal scan might reveal that someone blew cellulose into the attic in 1985 but completely missed the knee walls, or that your basement rim joists have zero insulation despite a finished basement.
"In New York, I'd estimate 60% of the homes I audit have some form of missing or inadequate insulation that's only visible through thermal imaging," says Michael Cardone, a BPI-certified energy auditor and building performance contractor based in Rochester. "The thermal camera doesn't lie — you see exactly where the envelope fails."
Duct Leakage Testing
Using a Duct Blaster, the auditor pressurizes your duct system and measures how much conditioned air escapes before reaching living spaces. The average American home loses 20–30% of HVAC airflow through duct leaks (ENERGY STAR, 2024). In New York homes with ducts running through unconditioned attics or basements, that percentage can climb higher.
If your ducts are accessible, sealing them with mastic is one of the highest-ROI improvements you can make after an audit. For inaccessible ducts, professional Aeroseal treatment is an option — though it runs $1,500–$3,000 per system.
Combustion Safety Testing
New York still has millions of homes running gas furnaces, boilers, and water heaters. BPI protocol requires combustion safety testing as part of any comprehensive audit. The auditor checks for carbon monoxide spillage, draft pressure, and gas leak detection. This is safety-critical — backdrafting furnaces kill people every winter in New York. It's not optional.
For homes considering electrification (heat pumps replacing gas equipment), this testing also establishes a baseline. If your existing gas equipment is already showing combustion safety concerns, that accelerates the case for switching to electric.
Energy Modeling and Prioritized Recommendations
After collecting field data, the auditor builds an energy model of your home. In New York, this typically produces a prioritized list of improvements ranked by cost-effectiveness — not just a generic checklist.
A strong audit report tells you: air seal the attic first ($800, saves $400/year), then add blown cellulose ($2,200, saves $350/year), then upgrade to a heat pump water heater ($3,800 minus $1,750 rebate, saves $250/year). That sequencing matters because some improvements make others more effective, and some unlock specific rebate categories.
The instrumentation alone — blower doors, manometers, combustion analyzers, calibrated thermal cameras — costs $10,000+ to assemble. You're paying for the tools and the expertise to interpret what they reveal. That's the gap a DIY assessment can't bridge, no matter how thorough you are with an infrared thermometer and a stick of incense.
How Much Does a Home Energy Audit Cost in New York?
New York audit pricing varies by region, home size, and audit depth. Here's what you'll actually pay in 2026:
| Audit Type | Typical Cost | What's Included |
|---|---|---|
| NYSERDA virtual assessment | $0 | Remote evaluation, utility bill analysis, general recommendations |
| Utility-sponsored assessment | $0–$100 | Basic walkthrough, direct-install measures (LEDs, weather stripping) |
| Level 1 (visual + basic diagnostics) | $150–$350 | Visual inspection, basic diagnostics, written recommendations |
| Level 2 (comprehensive) | $250–$650 | Blower door, thermal imaging, duct testing, energy model, full report |
| HERS Rating | $500–$900 | Complete energy model, HERS Index score, code compliance check |
| ASHRAE Level 3 (investment-grade) | $1,000–$2,000+ | Detailed financial analysis, utility bill calibration, typically commercial |
Several factors affect pricing across the state:
Regional labor costs. An audit in Manhattan or Westchester runs $450–$650 for a Level 2. The same audit in Syracuse or Utica costs $250–$400. New York City's higher cost of living, parking logistics, and building access complexity all add to the price.
Home age and size. The median New York home is roughly 1,600 sq ft (Census, 2024), but the range is enormous — from 800 sq ft city apartments to 4,000 sq ft suburban colonials. Larger, older homes take more time to audit. Expect a 2,500+ sq ft home to run 15–25% more than the baseline price.
Building complexity. Multi-zone systems, radiant floor heating, steam boilers, attached garages — New York homes have it all. A Victorian with three heating zones, a converted attic, and original windows takes longer to audit than a 1990s ranch with a single forced-air system.
The federal 25C credit. The Inflation Reduction Act added a $150 tax credit specifically for home energy audits, effective 2023 through 2032 (IRS, 2024). That means your $400 audit effectively costs $250 after the credit. The auditor must be BPI or RESNET certified for the credit to apply. To see how New York's audit pricing compares to other states and the national average, check our Home Energy Audit Cost in 2026: National Pricing Breakdown.
"Most New York homeowners are underinvesting in the audit itself," says Jennifer Thorne Amann, Senior Fellow at the American Council for an Energy-Efficient Economy (ACEEE). "A $400 audit that maps $15,000 in smart retrofit spending is the highest-leverage $400 you'll ever spend on your house."
What Are the Best NYSERDA Programs for Energy Audits in 2026?
NYSERDA (New York State Energy Research and Development Authority) runs the most comprehensive state-level energy efficiency program infrastructure in the country. Here's what's available in 2026:
Home Energy Plan (Formerly Residential Energy Assessment)
NYSERDA's flagship residential program was restructured in late 2025. The previous Residential Energy Assessment Program closed on December 18, 2025, and was replaced by the Home Energy Plan initiative. Key changes:
- Virtual assessment option. NYSERDA launched a virtual assessment pathway, allowing homeowners to get an initial evaluation without scheduling an in-person visit. This uses utility bill analysis, home photos, and a guided questionnaire.
- Tighter rebate integration. The Home Energy Plan now directly connects assessment findings to NYSERDA rebate applications, streamlining the process from audit to upgrade.
- Participating contractor network. Assessments are conducted by NYSERDA-participating contractors who are BPI-certified. You can find contractors through NYSERDA's online portal at nyserda.ny.gov.
The program provides a customized report detailing recommended improvements and estimated savings, along with a clear pathway to applicable rebates.
EmPower+ Program
This is NYSERDA's program for low- to moderate-income New Yorkers, and it's arguably the most generous residential energy program in the nation. If your household income falls at or below 80% of area median income (AMI), EmPower+ provides:
- Free comprehensive energy audit — including blower door testing, combustion safety, and thermal imaging
- Direct-install measures at no cost — LED lighting, smart power strips, low-flow fixtures, and basic air sealing
- Substantial upgrade subsidies — up to $24,000 for income-qualified households for insulation, heat pumps, and other improvements (NYSERDA, 2026)
- Health and safety remediation — addressing conditions like mold, knob-and-tube wiring, or asbestos that might otherwise block energy improvements
For eligible households, EmPower+ is a no-brainer. The audit is free, the direct-install work happens during the visit, and the upgrade pathway covers most or all of the cost.
Clean Heat Program
While not an audit program per se, NYSERDA's Clean Heat initiative offers $5,000–$12,000 in rebates for air-source heat pump installations, depending on your utility territory and system type (NYSERDA, 2026). These rebates are most valuable when paired with audit findings — the audit identifies whether a heat pump is the right fit for your home and which type (ducted, ductless mini-split, or cold-climate) makes sense.
Cold-climate heat pumps (ccASHP) are especially relevant in upstate New York, where heating loads are substantial. Modern cold-climate units from manufacturers like Mitsubishi, Fujitsu, and Bosch maintain full heating capacity down to 5°F and operate (at reduced capacity) as low as -13°F to -22°F.
HEAR (Home Energy Affordability Rebate)
The federal HEAR program, funded through the Inflation Reduction Act and administered through NYSERDA, provides point-of-sale rebates for moderate-income households (80–150% AMI). Rebates include up to $8,000 for heat pump installations, $1,750 for heat pump water heaters, $1,600 for insulation, and $2,500 for electrical panel upgrades (DOE, 2025).
The critical detail: most of these rebates require a qualifying energy assessment first. The audit isn't just diagnostic — it's the gateway to thousands in rebate dollars.
Who Are the Best Energy Auditors in New York?
New York has a deep bench of certified energy auditors. The key is knowing what credentials to look for and which type of auditor fits your situation.
Credential Requirements
BPI Building Analyst — the gold standard for residential audits in New York. NYSERDA requires BPI certification for contractors participating in its incentive programs. BPI auditors follow standardized protocols for blower door testing, combustion safety, and health and safety screening. There are approximately 2,400 BPI-certified professionals in New York State as of 2026 (BPI, 2025).
RESNET HERS Rater — specializes in energy modeling and the HERS Index scoring system. More common in new construction, but some raters also serve the existing-home market. A HERS rating is useful if you're planning a deep retrofit or want a quantified baseline for comparison.
PE (Professional Engineer) — for commercial or complex residential projects, a licensed PE adds engineering analysis to the audit. This is overkill for most single-family homes but valuable for large multi-family buildings or historic properties.
Types of Auditors to Consider
Independent auditors (no contracting arm). These are the most objective — they diagnose problems but don't sell the fix. Expect to pay $350–$600 for a thorough assessment. The advantage: recommendations are unbiased because the auditor doesn't profit from selling you insulation or a new furnace.
Contractor-affiliated auditors. Many insulation and HVAC companies employ BPI-certified auditors. The audit may be discounted ($100–$250) or free if you commit to upgrade work. The tradeoff is obvious: the auditor works for the company selling the solution. That doesn't mean the recommendations are bad — many contractor-auditors are excellent — but understand the incentive structure.
NYSERDA-participating contractors. These are vetted by NYSERDA and authorized to perform assessments that qualify for state rebates. This is the safest path if you want to access NYSERDA incentive programs, because non-participating auditors can't connect you to those programs.
Regional Considerations
New York City and Long Island. Building types here — row houses, brownstones, co-ops, pre-war apartments — require auditors experienced with shared-wall construction, steam heating systems, and the unique challenges of urban buildings. Look for auditors with BPI Multifamily Building Analyst certification if you're in a building with more than four units.
Hudson Valley and Westchester. Suburban housing stock from the 1950s through 1980s dominates. These homes often have partial insulation, aging forced-air systems, and attached garages that create major air leakage pathways. Auditors here should be experienced with whole-house approaches that address the garage-to-house connection.
Upstate (Albany, Syracuse, Rochester, Buffalo). Extreme heating loads (6,000–7,000 heating degree days) make insulation and air sealing the top priorities. Auditors in these regions should be well-versed in cold-climate heat pump sizing and ice dam diagnostics — both common findings in upstate audits.
How to verify credentials: Check the BPI registry at bpi.org/certified-professionals, the RESNET directory at resnet.us, and NYSERDA's participating contractor list at nyserda.ny.gov. Cross-reference all three.
How Do New York's Climate Zones Affect Audit Priorities?
New York spans IECC Climate Zones 4A through 6A — from the relatively mild (by Northeast standards) coastal zone around New York City to the severe cold of the Adirondacks and western New York. This range has massive implications for audit priorities.
Zone 4A: New York City, Long Island, Lower Hudson Valley
Heating degree days: 4,800–5,200 Dominant energy cost: Heating (55–65%), but cooling is significant in summer Key audit findings:
- Air leakage through party walls, plumbing chases, and recessed lighting
- Inadequate attic insulation (many NYC-area homes have R-11 to R-19; current code requires R-49)
- Steam heating system inefficiency — many NYC brownstones and row houses still run on century-old steam systems losing 15–30% of heat through distribution losses
- Window performance (single-pane and early double-pane windows are common in pre-war housing)
In this zone, air sealing delivers the highest ROI because the temperature differential, while substantial, is moderate enough that insulation improvements layer on top effectively. Auditors should evaluate whether caulking and weatherstripping can address accessible leaks before recommending professional air sealing.
Zone 5A: Mid-Hudson Valley, Capital District, Central New York
Heating degree days: 5,800–6,500 Dominant energy cost: Heating (70–75%) Key audit findings:
- Basement and crawl space insulation gaps — many homes in this zone have uninsulated basements that account for 15–20% of total heat loss
- Duct leakage in unconditioned spaces (attics, crawl spaces)
- Opportunities for cold-climate heat pump installations, especially as natural gas prices rise
- Ice dam formation from attic air leakage and inadequate insulation
Zone 6A: Adirondacks, Northern New York, Western New York (Buffalo, Rochester)
Heating degree days: 6,500–7,500 Dominant energy cost: Heating (75–85%) Key audit findings:
- Building envelope is the single biggest factor. Air sealing plus insulation can reduce heating costs by 30–50% in poorly insulated homes
- Cold-climate heat pump viability — modern ccASHP units rated to -13°F make electric heating practical even in Buffalo and Syracuse
- Ice dam issues are extremely common. Auditors should inspect attic bypasses, evaluate soffit ventilation, and check for blocked vents — but the real fix is air sealing the attic floor, not adding roof ventilation
- Historic homes (common in Buffalo's Elmwood Village, Rochester's Park Avenue, etc.) present unique challenges: balloon framing, plaster-and-lath walls, minimal insulation cavities
The critical insight: an audit in Zone 6A pays for itself roughly twice as fast as the same audit in Zone 4A, because the heating load — and therefore the savings potential — is significantly larger. A Buffalo homeowner spending $3,500/year on heating has far more savings to capture than a Queens homeowner spending $1,800.
According to NYSERDA data, the average comprehensive energy retrofit in New York saves homeowners 20–40% on energy costs, with the highest percentages concentrated in upstate regions with severe heating climates (NYSERDA, 2025).
Should You DIY Your Energy Audit or Hire a Professional?
This is the most common question we get, and the answer depends on your goals. A DIY audit can catch obvious problems. A professional audit catches everything else — which, in most New York homes, is where the real money is.
What a DIY Assessment Can Do
A homeowner with a $30–$50 infrared thermometer, a stick of incense (for draft detection), and a checklist can identify:
- Obvious drafts around windows, doors, and electrical outlets
- Missing weatherstripping
- Visible insulation gaps in accessible attics
- Thermostat scheduling issues
- Old incandescent lighting (still surprisingly common)
For a deeper DIY approach, you can rent or buy a basic thermal camera ($200–$400) and scan exterior walls for insulation voids. The FLIR ONE or Seek Thermal phone attachments work reasonably well for gross deficiencies — but they lack the resolution and temperature range of professional cameras.
What Only a Professional Catches
The problem with DIY is quantification. You can feel a draft, but you can't measure whether your house has 8 ACH50 or 18 ACH50 — and that difference determines whether you need $800 in air sealing or $4,000. Specifically, professional audits catch:
- Hidden air leakage pathways — plumbing penetrations, wire chases, top plates, chimney chases, bath fan ducts. These are invisible without a blower door pressurizing the house.
- Duct leakage rates — impossible to quantify without a Duct Blaster.
- Combustion safety issues — carbon monoxide spillage and backdrafting. You cannot test this with consumer equipment, and getting it wrong can be fatal.
- Insulation quality vs. quantity — blown-in insulation can settle, get wet, or have voids that reduce its effective R-value well below its nominal rating. Thermal imaging at professional resolution reveals these issues.
- Interaction effects — a professional understands that air sealing the attic changes the pressure dynamics of the whole house, which can cause a naturally-drafted water heater to backdraft. DIYers miss these system interactions.
The U.S. Department of Energy reports that professional energy audits identify an average of 25–40% energy savings potential in existing homes, compared to 5–15% from DIY walk-through assessments (DOE, 2024). In New York's older housing stock, that gap is likely even wider.
The Hybrid Approach
The smartest path for most New York homeowners: start with a DIY walkthrough to catch the obvious stuff, handle simple fixes yourself (caulking and weatherstripping is genuinely DIY-friendly), then hire a professional for the comprehensive diagnostic work. The DIY prep means you'll understand the auditor's findings better, ask smarter questions, and know which recommendations to prioritize.
How to Stack New York Energy Rebates After Your Audit
The rebate landscape in New York is among the most generous in the country — but it's layered, and the layers interact. Here's how to maximize your return:
Federal Incentives (Available to All NY Homeowners)
25C Energy Efficient Home Improvement Credit:
- $150 credit for the energy audit itself (must be from a qualified auditor)
- Up to $2,000/year for heat pumps and heat pump water heaters
- Up to $1,200/year for insulation, windows, doors, and electrical panels
- 30% of project cost, up to the annual caps
- Available 2023 through 2032 (IRS, 2024)
25D Clean Energy Credit:
- 30% of cost for solar panels, battery storage, and geothermal heat pumps
- No annual cap
- Available through 2032, stepping down to 26% in 2033 and 22% in 2034
NYSERDA Programs
Clean Heat rebates: $5,000–$12,000 for air-source heat pumps depending on utility territory and system type (NYSERDA, 2026). These are point-of-sale rebates — the contractor deducts them from your invoice.
EmPower+ (income-qualified): Up to $24,000 in subsidized improvements for households at or below 80% AMI. This can cover insulation, air sealing, heat pumps, and health and safety measures.
HEAR (80–150% AMI): Up to $8,000 for heat pumps, $1,750 for HPWH, $1,600 for insulation, $2,500 for panel upgrades.
Utility Programs
Con Edison, National Grid, NYSEG, RG&E, and Central Hudson all run efficiency rebate programs that stack on top of NYSERDA and federal incentives. Common utility rebates include:
- Smart thermostat rebates ($50–$100)
- Insulation rebates ($0.50–$1.00 per sq ft)
- Appliance recycling bounties ($50 for old refrigerators/freezers)
- Heat pump rebates (varies by utility, often $500–$1,000 on top of NYSERDA)
The Stacking Strategy
Here's a real example of how these layer for a typical upstate New York home:
| Improvement | Cost | NYSERDA Rebate | Federal 25C/25D | Utility Rebate | Net Cost |
|---|---|---|---|---|---|
| Energy audit | $400 | — | $150 | — | $250 |
| Air sealing + insulation | $4,500 | $800 | $1,350 | $500 | $1,850 |
| Cold-climate heat pump | $14,000 | $8,000 | $2,000 | $1,000 | $3,000 |
| Heat pump water heater | $3,800 | — | $1,140 | $200 | $2,460 |
| Total | $22,700 | $8,800 | $4,640 | $1,700 | $7,560 |
That's $22,700 in improvements for $7,560 out of pocket — a 67% discount. And at estimated combined savings of $2,200/year, the payback period on the net cost is roughly 3.4 years.
The audit is what makes this possible. Without it, you're guessing which improvements to make, potentially spending on the wrong things, and missing rebate eligibility for programs that require a qualifying assessment.
How We Ranked
Energy-auditor rankings draw on:
- Verifiable credentials: BPI Building Analyst certification, HERS rater status, RESNET membership, state-utility-rebate eligibility, and IRS Inflation Reduction Act tax-credit verification capability.
- Customer-reported outcomes: Google reviews from the past 24 months, BBB records, and any state attorney-general complaints. We flag patterns in upsell-pressure complaints and report-delivery timelines.
- Direct phone verification asking about credential status, report format (digital + Manual J), turnaround time, and whether they file rebate paperwork on the homeowner's behalf.
What we never accept: paid placement or referral kickbacks from HVAC contractors / insulation installers. We use affiliate links to home-energy-monitoring tools (Emporia Vue, Sense) — these never affect auditor rankings.
Update cadence: quarterly auditor re-verification. Email research@energyauditfinder.com for corrections.
Frequently Asked Questions
How long does a home energy audit take in New York?
A comprehensive Level 2 audit typically takes 2–4 hours for a single-family home, depending on square footage and complexity. Multi-zone homes, older buildings with multiple additions, and houses with both heating and cooling systems take longer. The auditor then needs 3–7 business days to process data, build the energy model, and deliver a written report with prioritized recommendations.
Are NYSERDA energy audits really free?
It depends on the program. NYSERDA's EmPower+ program provides genuinely free comprehensive audits — including blower door testing and thermal imaging — for income-qualified households (at or below 80% AMI). NYSERDA's Home Energy Plan offers virtual assessments at no cost. However, a full in-person comprehensive audit from a NYSERDA-participating contractor typically costs $200–$500, sometimes discounted through utility partnerships. The free virtual assessment is a useful starting point but doesn't replace hands-on diagnostic testing.
What's the difference between a NYSERDA assessment and a private energy audit?
A NYSERDA assessment follows standardized protocols and qualifies you for state rebate programs. A private audit may be more flexible in scope but won't automatically connect you to NYSERDA incentives. For most homeowners, going through a NYSERDA-participating contractor is the better value — you get the diagnostic work and the rebate pipeline in one process. Independent auditors are valuable when you want a completely unbiased second opinion, especially before major renovation decisions.
Do I need an energy audit before installing a heat pump in New York?
Technically, no — you can install a heat pump without an audit. But practically, it's a mistake to skip it. A heat pump sized without proper load calculations (Manual J) may be oversized (wastes money, short-cycles) or undersized (can't keep up in January). The audit also ensures your building envelope is tight enough to make the heat pump effective. Installing a $14,000 heat pump in a house that leaks like a sieve means the heat pump runs constantly trying to compensate for the envelope — and your bills barely drop. Air seal first, then size the heat pump to the improved envelope.
Can I get an energy audit for my New York City apartment or co-op?
Yes, but it looks different than a single-family audit. Individual apartment audits focus on window performance, radiator efficiency, in-unit air sealing, and appliance energy use. Building-wide audits (which require board approval in a co-op) can address shared systems like boilers, common-area lighting, and building envelope insulation. NYC's Local Law 97 — which imposes carbon emission caps on buildings over 25,000 sq ft starting in 2024 — is driving more co-op and condo boards to pursue building-level energy assessments. If you're in a large building, talk to your board about a whole-building audit; the per-unit cost drops significantly.
Related Reading
- What DIY Energy Audits Miss — The gaps in self-assessment and why professional diagnostics catch 2–3x more savings
- DIY Duct Mastic Sealing Guide — Step-by-step instructions for one of the highest-ROI post-audit fixes
- DIY Caulking and Weatherstripping Guide — Handle the easy air sealing work yourself before calling a pro
- DIY Home Energy Audits: When They're Worth It — A realistic assessment of what you can and can't accomplish without professional equipment
Sources
- U.S. Energy Information Administration (EIA), "State Electricity Profiles," 2025
- U.S. Department of Energy, "Air Leakage Guide," 2024
- ENERGY STAR, "Duct Sealing," 2024
- NYSERDA, "Home Energy Plan" and "EmPower+ Program," nyserda.ny.gov, 2026
- NYSERDA, "Clean Heat Program Incentive Offerings," 2026
- IRS, "Energy Efficient Home Improvement Credit (25C)," 2024
- U.S. Census Bureau, "American Housing Survey — New York," 2024
- Building Performance Institute (BPI), "Certified Professionals Directory," 2025
- U.S. Department of Energy, "Home Energy Score and Audit Savings Data," 2024
- NYSERDA, "Residential Retrofit Savings Analysis," 2025
-- The Efficiency Team