Indiana HVAC Rebates (2026 Guide) — Tax Credits, Utility Programs & Savings

The Energy Efficient Home Improvement Credit (IRS Section 25C) is the primary federal HVAC tax credit available to Indiana homeowners in 2026. It covers qualifying heat pumps, central air conditioners, furnaces, and air handlers installed in an existing primary residence.

The credit is worth 30% of the installed equipment cost, up to the following annual caps:

• Heat pumps and heat pump water heaters: up to $2,000 per year
• Central air conditioners: up to $600 per year
• Gas furnaces and boilers: up to $600 per year
• Air handlers: up to $600 per year
• Home energy audits: up to $150 per year

To qualify, equipment must meet ENERGY STAR Most Efficient criteria or equivalent CEE (Consortium for Energy Efficiency) tier requirements. The credit is non-refundable — it reduces your federal tax liability but will not generate a refund if the credit exceeds what you owe. Indiana homeowners can claim this credit on IRS Form 5695 when filing their annual return.

Note: The 25C credit applies to existing homes only. New construction does not qualify. Business properties may qualify for the separate 179D commercial building energy deduction — consult a tax advisor for commercial applications.

Indiana is part of the federal Home Energy Rebates program framework (HEAR and HEEHRA), administered through the Indiana Office of Energy Development (OED). These programs are intended to provide point-of-sale rebates to income-qualifying households and contractor-facilitated rebates for whole-home energy upgrades.

Indiana Home Efficiency Rebate (HEAR) highlights:

• Up to $4,000 for moderate-income households (80–150% AMI) on whole-home energy improvements
• Up to $8,000 for low-income households (below 80% AMI)
• Eligible upgrades include heat pumps, insulation, air sealing, and ventilation systems
• Rebates are applied at point of sale by participating contractors

The Indiana Home Electrification and Appliance Rebates (HEEHRA) program adds rebates for electric equipment upgrades — heat pump HVAC, heat pump water heaters, and electric panel upgrades. Program availability and income thresholds are reviewed annually.

Before scheduling work, check the Indiana Office of Energy Development website for current HEAR and HEEHRA program status, participating contractor rules, income eligibility, funding availability, and eligible HVAC equipment categories.

For a rebate-focused replacement quote, it's worth comparing heat pumps, high-efficiency AC units, and HVAC replacement options before committing to a system. Model-specific efficiency ratings determine eligibility — check before you buy.

Indiana's major electric and gas utilities offer their own HVAC rebate programs that can be combined with federal tax credits for maximum savings. Programs are updated annually and vary by service territory.

For many homeowners and businesses, Indiana heating and cooling rebates are part of a broader energy efficiency rebate search that may include HVAC equipment, duct improvements, smart thermostats, heat pumps, air conditioners, furnaces, and whole-home efficiency upgrades.

Duke Energy Indiana rebates (residential):

• Central air conditioners (16 SEER2+): $300–$500
• Heat pumps (16 SEER2/9 HSPF2+): $400–$700
• Smart thermostats: $75
• Duct sealing and testing: up to $200

AES Indiana (Indianapolis Power & Light) rebates:

• Central air conditioners (qualifying SEER2): $200–$400
• Heat pumps (qualifying efficiency): $300–$600
• Aeroseal advanced duct sealing: up to $300 (where program rules apply)
• Programmable and smart thermostats: $50–$75
• Home energy assessments: rebate available

Vectren/CenterPoint Energy Indiana (natural gas customers):

• High-efficiency gas furnaces (95%+ AFUE): $250–$400
• Programmable thermostats: $25–$50
• Boiler replacements: rebate available — contact Vectren directly

All utility rebates require equipment installation by a licensed HVAC contractor and submission of a rebate application with proof of purchase and contractor invoices. Rebates are subject to funding availability and may change mid-program year. Most Indiana HVAC rebate programs operate on annual funding cycles. Utility programs from Duke Energy, AES Indiana, and CenterPoint Energy typically reset each year and may close early if funding is exhausted. Federal HVAC tax credits currently run through 2032 under the Inflation Reduction Act.

High-efficiency heat pump systems offer the highest rebate potential of any HVAC equipment type in Indiana in 2026, with stacking opportunities across federal, state, and utility programs. For users comparing rebate-eligible replacement options, heat pumps are usually the first equipment category to price because they can combine cooling, heating, and incentive eligibility in one system.

Heat pump rebate stack example for a qualifying Indiana homeowner:

• Federal 25C tax credit: up to $2,000
• Duke Energy or AES Indiana utility rebate: $400–$700
• Indiana HEEHRA rebate (income-qualifying): up to $8,000
• Total potential savings: $2,400–$10,700 depending on income and utility

To qualify for the federal heat pump tax credit, the unit must meet ENERGY STAR Most Efficient criteria. For cold-climate Indiana winters, look for heat pumps with a minimum 9 HSPF2 heating rating and certified operation to -13°F. Brands with strong qualifying lineups include Carrier, Trane, Lennox, Daikin, and Mitsubishi.

Air-source heat pumps are the most commonly rebated type. Ground-source (geothermal) heat pumps are eligible for the separate Residential Clean Energy Credit (26% of installed cost, no cap) — a significantly higher incentive for qualifying installations.

Commercial heat pump rebates in Indiana depend on a lot of variables: utility provider, building type, equipment efficiency, project scope, and whether you're doing a replacement or new installation. Worth checking all of this before approving a commercial HVAC installation or HVAC replacement — rebate eligibility can change the economics of a project significantly.

Rebate programs may apply differently to heat pumps, rooftop units, split systems, packaged units, and other commercial HVAC equipment. Duke Energy, AES Indiana, NIPSCO, CenterPoint Energy, and other Indiana utilities often run separate residential and business incentive tracks — so eligibility needs to be checked against the exact model number, efficiency rating, and service territory, not just the equipment category.

Indiana businesses and industrial facilities researching utility energy efficiency grants, rebates, or incentive programs should check two fronts: HVAC-specific rebates and broader commercial energy-efficiency programs. Depending on the utility account, building type, project scope, and current program funding, eligible improvements can include high-efficiency packaged units, heat pumps, controls, duct improvements, ventilation upgrades, or building-level efficiency work.

• Confirm whether the rebate is residential, commercial, or business-only
• Check equipment type eligibility before you purchase
• Verify SEER2, HSPF2, EER2, AFUE, or ENERGY STAR requirements for your specific model
• Ask whether the contractor or the customer submits the rebate application
• Hold onto invoices, model numbers, serial numbers, and utility account details

For commercial properties and industrial HVAC projects, rebates are usually just one piece of the savings picture. Operating cost reduction, equipment availability, building load, rooftop access, ventilation needs, tenant comfort, and whether a packaged heat pump or a conventional commercial HVAC unit actually fits the space — all of that factors in too.

Central air conditioner replacements qualify for both federal tax credits and Duke Energy/AES Indiana utility rebates when the installed unit meets minimum efficiency thresholds. This makes AC replacement a practical quote path for homeowners who are not ready to switch to a heat pump but still want a higher-efficiency system.

Qualifying efficiency requirements for 2026:

• Federal 25C credit: ENERGY STAR certified, typically 16 SEER2+ for split systems
• Duke Energy rebate: 16 SEER2 minimum for residential split systems
• AES Indiana rebate: check current program terms — SEER2 requirements updated for 2026

The federal credit for a qualifying central AC is 30% of installed equipment cost, capped at $600. Combined with a utility rebate of $300–$500, Indiana and Indianapolis homeowners replacing a standard efficiency AC with a high-efficiency unit can realistically offset $900–$1,100 of the total installed cost.

Packaged units (combined heating and cooling in one cabinet, commonly installed on rooftops) have separate efficiency thresholds — confirm ENERGY STAR certification before purchase if claiming the federal credit.

Gas furnace rebates in Indiana come primarily from natural gas utilities (Vectren/CenterPoint, Citizens Energy Group) and the federal 25C tax credit. Electric utilities generally do not rebate gas furnaces, so furnace replacement quotes should confirm both AFUE rating and gas utility territory before assuming rebate eligibility.

Qualifying furnaces for the federal 25C credit must meet the highest CEE efficiency tier — currently 97% AFUE or higher for gas furnaces in northern climate zones including Indiana. This is a tighter threshold than ENERGY STAR, so confirm the specific model meets CEE Tier requirements before purchase.

Vectren/CenterPoint residential furnace rebates:

• 95%+ AFUE gas furnace: $250–$400
• Combined furnace + AC system upgrade: additional rebate may apply
• Rebate application required within 90 days of installation

Citizens Energy Group (Indianapolis service territory):

• High-efficiency furnace rebate: contact Citizens directly for current program amounts
• Eligible for income-qualifying customers: enhanced rebate tiers available

The 25C federal credit for a qualifying furnace is 30% of equipment cost up to $600. Combined with a utility rebate, total savings on a high-efficiency furnace replacement can reach $850–$1,000.

Most Indiana HVAC rebates require action before or immediately after installation — not months later. Follow this process to capture all available savings:

• Step 1 — Confirm eligibility: verify your utility territory (Duke Energy, AES Indiana, Vectren, Citizens) and check current program terms on their website before purchasing equipment
• Step 2 — Select qualifying equipment: confirm the specific model meets program efficiency requirements — SEER2, HSPF2, or AFUE thresholds vary by program
• Step 3 — Use a participating contractor: most utility rebate programs require installation by a licensed HVAC contractor; some require the contractor to submit the rebate application on your behalf
• Step 4 — Collect documentation: keep the contractor invoice, equipment model/serial number, and proof of payment — all required for rebate submission
• Step 5 — Submit rebate application: utility rebates typically have a 60–90 day submission window post-installation; federal tax credits are claimed on your annual IRS return via Form 5695
• Step 6 — Track rebate status: utility rebates are paid by check or account credit within 4–12 weeks of approved application

For income-qualifying households pursuing the Indiana HEEHRA program, work must be performed by a program-certified contractor. Contact the Indiana Office of Energy Development for a current list of approved contractors in the Indianapolis metro area.

The table below summarises available 2026 HVAC rebates and tax credits for Indiana homeowners. Amounts are approximate — verify current program terms before purchase.

Programs are subject to funding availability and may close before the calendar year ends. Confirm program status with your utility before scheduling installation.

Not every high efficiency HVAC system qualifies for every rebate program. The following high efficiency HVAC systems offer the best rebate potential for Indiana homeowners and businesses in 2026:

• Heat pumps (air-source) — highest federal credit ($2,000), utility rebates, and HEEHRA eligibility; best total rebate stack
• High-efficiency central AC (16+ SEER2) — federal credit + Duke Energy/AES Indiana utility rebate
• High-efficiency gas furnaces (97%+ AFUE) — federal 25C credit + Vectren/Citizens natural gas rebates
• Geothermal heat pumps — 26% federal clean energy credit with no dollar cap; highest savings for qualifying properties
• Ductless mini-splits — may qualify for federal 25C if rated equipment; check manufacturer ENERGY STAR certification

For a rebate-driven quote, start with heat pumps, high-efficiency AC units, furnace systems, or ductless mini-splits. Ask for model-specific efficiency ratings before purchase so rebate eligibility can be checked against the current utility and federal program rules.