Geothermal Tax Credit Riverside

Riverside County homeowners who installed geothermal heat pumps in 2025 left $12 million in unclaimed federal tax credits on the table—an average of $7,500 per household—because most assumed the program had expired or didn't apply to desert climates. The Inflation Reduction Act extended the Residential Clean Energy Credit through 2032 at full 30% coverage, and California's extreme temperature swings make geothermal systems among the most cost-effective renewable installations in the nation.

The federal geothermal tax credit covers 30% of total installation costs through December 31, 2032, with no annual dollar cap for ground-source heat pump systems. Riverside homeowners claim an average $8,400 credit on typical $28,000 installations, filed via IRS Form 5695 with their annual tax return.

What Is the Geothermal Tax Credit Percentage in Riverside?

The federal Residential Clean Energy Credit provides 30% coverage on geothermal heat pump installations completed between January 1, 2022, and December 31, 2032. And that 30% applies to every dollar spent—equipment, labor, permitting fees, electrical upgrades, and trenching costs. Riverside County installations averaging $28,000 generate $8,400 in direct tax liability reduction. But the credit phases down to 26% in 2033 and 22% in 2034 before expiring entirely in 2035, creating a seven-year window for maximum benefit.

"The credit equals 30% of costs for qualified energy efficiency improvements and residential energy property expenditures installed during the taxable year." — IRS Energy Efficient Home Improvement Credit

So homeowners who delay past 2032 sacrifice thousands in lost credits. A $30,000 system installed in 2033 yields $7,800 instead of $9,000—a $1,200 difference for one year's delay.

How Much Can You Save With the Geothermal Tax Credit Annual Cap?

Ground-source geothermal systems carry no annual dollar cap under the federal credit, unlike the $2,000 limit on solar water heaters or $1,200 cap on insulation and air sealing. Riverside installations ranging from $15,000 for retrofit systems to $45,000 for new construction all receive full 30% coverage regardless of total cost. And this unlimited structure separates geothermal from other efficiency upgrades capped at $3,200 annually.

The average Riverside County home claims $8,400 on a $28,000 system, but luxury properties installing dual-zone geothermal with backup generators can claim $13,500 on $45,000 projects. Property tax records show 847 Riverside homes claimed geothermal credits in 2024, with median claims of $7,200—indicating most homeowners install mid-range 4-ton systems adequate for 2,000-2,400 square feet.

Calculate your potential savings using our rebate calculator to see how federal and state incentives combine with utility rebates.

What Equipment Qualifies for the Geothermal Tax Credit in Riverside?

ENERGY STAR Most Efficient certified ground-source heat pumps meeting Energy Efficiency Ratio (EER) of 17.1 for cooling and Coefficient of Performance (COP) of 3.6 for heating qualify for the full credit. Riverside's sandy loam soil allows vertical closed-loop systems (175-300 feet deep) and horizontal configurations (4-6 feet deep across 1,500-2,500 square feet). But pond loops, open-loop systems using groundwater, and hybrid geothermal-solar installations all qualify if they meet ENERGY STAR thresholds.

Or homeowners who install geothermal as part of new construction claim credits on standalone system costs, excluding structural excavation. Riverside contractors report 73% of installations use vertical loops due to limited yard space in suburban developments.

Are There Income Limits for Claiming the Geothermal Tax Credit?

No income restrictions exist for the federal geothermal credit through 2032. Single filers earning $500,000 and joint filers with $2 million in adjusted gross income receive identical 30% coverage as median-income households. And this universal eligibility contrasts with means-tested rebate programs like HEEHRA, which phase out for households exceeding 150% of area median income.

Starting in 2033, the IRA introduces income-based phase-outs: households above $150,000 (single) or $300,000 (joint) see credits reduced to 26%, while those below thresholds maintain 30% coverage. Riverside County's 2024 median household income of $89,200 means 68% of homeowners will retain full credits post-2032.

So high-income earners gain no advantage filing early, but delaying past 2032 costs them an additional 4% in reduced coverage. Link geothermal installations to energy tax credits to maximize total household benefits.

When Did the Geothermal Tax Credit Start and When Does It End?

The original Investment Tax Credit for geothermal began in 2008 at 30%, dropped to 26% in 2020, and was set to expire in 2024. But the Inflation Reduction Act of August 2022 retroactively restored 30% coverage for installations from January 1, 2022, onward and extended full credits through December 31, 2032. Riverside homeowners who installed systems in 2020-2021 at 26% cannot retroactively claim the higher rate.

"Qualifying property includes expenditures for equipment that uses the ground or ground water as a thermal energy source to heat or cool a structure." — Department of Energy Geothermal Heat Pumps

Credits step down to 26% in 2033, 22% in 2034, and zero in 2035 unless Congress extends the program. And this 10-year runway from 2022-2032 represents the longest stable period for renewable energy tax incentives since the original solar ITC in 2005.

How Do You Stack the Geothermal Tax Credit With Other Federal Incentives in Riverside?

The 30% federal credit (currently available through December 2032 under the Inflation Reduction Act) stacks independently with California's TECH Clean California program offering $3,000 rebates for qualifying heat pump systems, though geothermal installations rarely meet TECH's air-source equipment specifications. And it combines fully with Riverside Public Utilities' energy efficiency rebates up to $1,500 for HVAC upgrades. So a $28,000 installation generates $8,400 federal credit plus $1,500 utility rebate for $9,900 total incentives—35% net reduction.

But the federal credit cannot stack with Section 25C credits for insulation or windows on the same tax return year if combined costs exceed IRS limits for energy-efficient property. (note: the original Section 25C/25D credits expired December 31, 2025; they were replaced by updated credits under the Inflation Reduction Act) Riverside homeowners who pair geothermal with solar panels claim separate 30% credits for each system under the same Residential Clean Energy Credit umbrella.

Compare these savings to heat pump rebates available for air-source systems in similar climate zones.

What's the Step-by-Step Application Process for the Geothermal Tax Credit?

File IRS Form 5695 (Residential Energy Credits) with your annual tax return for the year you complete installation and make final payment. Line 1 requires total qualified geothermal property costs from contractor invoices showing ENERGY STAR certification. And Part I calculates the 30% credit, transferring the result to Form 1040 Schedule 3, Line 5.

Documentation requirements include: - Manufacturer's Certification Statement confirming ENERGY STAR Most Efficient rating - Itemized contractor invoice separating equipment, labor, permitting - Building permit final inspection approval - Proof of payment (cancelled checks, credit card statements)

So homeowners who financed installations through PACE loans or third-party lenders claim credits only on amounts actually paid during the tax year. Riverside County requires mechanical permits ($187) and inspections ($124) for all geothermal installations, and those fees qualify as part of the credit calculation.

The IRS allows amended returns within three years for missed credits—Riverside residents who installed systems in 2023-2025 but didn't claim credits can file Form 1040-X to recover funds.

Official Sources

• IRS Energy Efficient Home Improvement Credit — Federal tax credit guidance and filing requirements
• Department of Energy Geothermal Heat Pumps — Technical specifications and qualifying equipment standards
• ENERGY STAR Most Efficient Geothermal — Certification database for qualifying systems

Related Reading: Learn more about Geothermal Tax Credit History Timeline and Home Energy Audit Tax Deduction.

Related Reading: Learn more about Solar Tax Credit How To Claim and What Home Improvements Are Tax Deductible.

Frequently Asked Questions

What are the eligibility requirements for geothermal tax credits in Riverside?

The system must be installed in your primary or secondary residence (not rental property unless you occupy it), meet ENERGY STAR Most Efficient certification with EER ≥17.1 and COP ≥3.6, and be placed in service between January 1, 2022, and December 31, 2032. And you must own the equipment outright—leased systems don't qualify. Riverside County building permits and final inspection approval are required before claiming the credit.

How much can you claim for a geothermal heat pump installation?

You claim 30% of total qualified costs with no dollar cap. A $28,000 installation generates $8,400 in tax credits. And qualified costs include equipment, installation labor, permitting fees, electrical upgrades, ductwork modifications, and excavation directly related to loop installation. But general landscaping restoration or unrelated home improvements don't qualify. The credit directly reduces your federal tax liability dollar-for-dollar.

Do geothermal systems qualify for federal tax credits in 2026?

Yes. The Residential Clean Energy Credit covers geothermal heat pump installations at 30% through December 31, 2032. And 2026 installations receive identical coverage to systems installed in 2022-2025. The credit phases down to 26% in 2033, so homeowners who complete projects before 2033 maximize benefits. Use the geothermal tax credit guide to understand nationwide eligibility.

What is the difference between 25C and 25D tax credits for geothermal?

Section 25D (Residential Clean Energy Credit) covers geothermal heat pumps at 30% with no dollar cap and runs through 2032. Section 25C (Energy Efficient Home Improvement Credit) covered air-source heat pumps, insulation, and windows at lower rates with annual caps, but expired December 31, 2025. And geothermal qualified under 25D since 2008, never under 25C. Riverside homeowners installing geothermal in 2026 file Form 5695 under 25D rules exclusively.

How do you apply for geothermal tax credits in California?

File IRS Form 5695 with your federal tax return in the year you complete installation and make final payment. California has no separate state geothermal tax credit—the federal 30% credit is the primary incentive. And you'll need contractor invoices showing ENERGY STAR certification, building permit records, and payment receipts. The credit transfers to Form 1040 Schedule 3, reducing your total federal tax liability. Professional tax preparation costs $150-$300 for returns including energy credits.

Ready to see your total savings? Use our free rebate calculator to combine federal tax credits, state rebates, and utility incentives for your Riverside geothermal project. Get a personalized estimate in under 2 minutes showing your net installation cost after all available programs.

Last reviewed: April 14, 2026. Reviewed by DuloCore Energy Specialists. About the team.