Case Study: Cold-Climate Heat Pump with HEEHRA Income-Qualified Rebates
This case study documents a 2025 cold-climate heat pump installation in a 1,650 square foot 1955 ranch in New Britain's Belvedere neighborhood. The project demonstrates how the Inflation Reduction Act's HEEHRA (High-Efficiency Electric Home Rebate Act) program enables substantial heat pump electrification for moderate-income households that might otherwise find heat pump installation cost-prohibitive. The customer qualified for the maximum HEEHRA rebate tier combined with federal IRA 25C tax credit, reducing effective net cost significantly.
Customer Situation
The single homeowner had lived in the 1955 ranch for 11 years before deciding to replace aging HVAC equipment:
- Equipment condition: 2003 oil-fired furnace (22 years old, well past typical lifespan); 2009 central AC (16 years old, approaching end-of-life); increasing repair costs over previous 3 winters.
- Annual heating cost: $2,840 (2023-2024 winter) for oil; substantial expense relative to customer income.
- Annual cooling cost: $420 (summer 2024) for central AC; modest cost but inefficient older equipment.
- Income status: Customer qualified as moderate-income household (between 80% and 150% area median income) for HEEHRA program; eligibility documentation provided through Connecticut HEEHRA administrator.
- Customer priorities: Reduce monthly heating costs; modernize aging equipment; pursue electrification with environmental and cost benefits; maximize available rebates and incentives.
- Home characteristics: 1955 ranch with modest envelope efficiency (attic R-30, walls R-13 from 1990s renovation); typical mid-century construction.
- Electrical service: 100A service from 1955 original construction; previous service upgrade not performed; capacity assessment required.
Diagnostic Visit and Consultation
July 2025 comprehensive consultation visit:
- Manual J calculations: Heat loss 48,000 BTU/hr at Hartford 4°F winter design; cooling load 24,000 BTU/hr at 88°F/73°F summer design.
- Envelope assessment: Blower door test result 6.2 ACH50; typical for 1955 construction with subsequent insulation upgrades.
- Electrical service capacity assessment: 100A service marginal for heat pump installation; load calculation showed adequate capacity for current loads plus heat pump but limited room for additional electrification (EV charger, electric water heater).
- Option evaluation:
- Like-for-like 95% AFUE oil furnace + variable-speed AC: $8,400 total cost; familiar technology but ongoing oil cost burden.
- Oil-to-gas conversion + 95% AFUE gas furnace + AC: $11,400 total; eliminates oil; substantial conversion costs.
- Cold-climate heat pump (with HEEHRA + IRA stack): $14,400 total; substantial rebate offset; eliminates fossil fuel heating.
- Rebate eligibility verification: Customer income documentation confirmed HEEHRA moderate-income tier eligibility; combined with IRA 25C tax credit, substantial rebate stack possible.
- Customer decision: Cold-climate heat pump with HEEHRA + IRA rebate combination; modest electrical panel addition for backup heat strip; complete electrification of heating system.
Solution Scope and Equipment Selection
Equipment Selected
- Daikin DZ19VA181 cold-climate heat pump (1.5-ton): 18,000 BTU/hr nominal cooling capacity; cold-climate variable-speed inverter; HSPF2 9.2; SEER2 19.0; rated for full heating capacity to −13°F. Selected for: appropriate sizing match for the modest home, cold-climate capability matching Hartford's 4°F winter design, Daikin Comfort Pro contractor warranty support.
- Daikin air handler (concealed indoor unit): 18,000 BTU/hr matched to outdoor; variable-speed ECM blower; integrated 6 kW electric resistance backup heat strip for extreme cold scenarios.
- Existing ductwork assessment: 1955 ductwork tested; 22% leakage (slightly high but acceptable for retrofit); minor sealing during installation; insulation upgrade in attic where ductwork passes through.
- Electrical upgrades: Panel addition for new circuits; dedicated 240V circuit for outdoor unit (40A); dedicated 240V circuit for air handler and heat strip (50A); breaker box space adequate.
- Thermostat: Honeywell T6 Pro programmable thermostat (HEEHRA-eligible); coordinates heat pump and backup heat strip operation.
- Old equipment removal: Old oil furnace removed; oil tank decommissioning ($840 separate scope); gas line capped if applicable; old AC equipment removed and disposed.
Installation Process
Project completed September 2025 over 4 working days:
- Day 1: Old oil furnace and AC removal; oil tank decommissioning (separate scope, day of) including pumping and removal; basement preparation.
- Day 2: Electrical panel addition installation; dedicated circuit installation for outdoor unit and air handler; outdoor unit pad preparation.
- Day 3: Daikin outdoor unit placement; refrigerant lineset routing to indoor location; indoor air handler installation in mechanical space; backup heat strip integration.
- Day 4: System fill and refrigerant charging; ductwork connection to existing infrastructure; thermostat installation and configuration; system commissioning with operational verification.
Performance Through 2025-2026 Winter
System operating since October 22, 2025. Winter performance data documented through completion:
- Mild weather (35-50°F outdoor): Heat pump operates efficiently at low capacity; minimal backup heat strip use.
- Cold weather (15-30°F outdoor): Heat pump capacity adequate; setpoint maintained.
- Severe cold (5-15°F outdoor): Heat pump operating at high capacity but adequate; brief backup heat strip activation during morning warm-up periods.
- Extreme cold (below 5°F): Backup heat strip activated more frequently during occasional bursts; heat pump continued operating providing substantial heating contribution.
- Backup heat strip usage: Total approximately 78 hours across winter; slightly higher than equivalent West Hartford case study reflecting smaller building thermal mass and less envelope efficiency.
Energy Cost Comparison
- Winter 2025-2026 electricity for heating (estimated isolated): 5,420 kWh @ $0.22/kWh = $1,192
- No oil consumption (heating fuel eliminated): Previously 750+ gallons annually @ $3.85/gallon = $2,888 not consumed
- Total heating cost 2025-2026: $1,192 (vs. $2,840 previous oil heating) — 58% reduction
- Annual heating cost savings: $1,648
- Summer 2026 cooling estimated cost: $310 (vs. $420 previous summer); 26% reduction.
- Annual cooling savings: $110
- Combined annual energy savings: $1,758
Investment and Rebate Summary
- Daikin DZ19VA181 outdoor + air handler: $7,800
- 6 kW backup electric heat strip (integrated): $640
- Refrigerant linesets, insulation, fittings: $1,240
- Electrical work (panel addition, 2 dedicated 240V circuits): $2,840
- Old equipment removal and disposal: $640
- Oil tank decommissioning (separate scope): $840
- Honeywell T6 Pro programmable thermostat: $185
- Installation labor (4 days, 2 technicians): $5,600
- Permit and inspection: $280
- Outdoor unit pad and miscellaneous: $440
- Total project cost: $20,505
- HEEHRA moderate-income heat pump rebate (50% of installed cost, capped at $8,000): −$5,000
- Eversource cold-climate heat pump rebate: −$2,500
- Federal IRA 25C tax credit (30% capped at $2,000): −$2,000
- Net customer investment: $11,005
Long-Term Economics Projection
- Combined annual energy savings: $1,758 (based on first winter and projected summer)
- Simple payback period: $11,005 net investment / $1,758 annual savings = approximately 6.3 years
- HEEHRA program impact: Without HEEHRA rebate, net investment would be $16,005 with payback 9.1 years; HEEHRA enables faster payback and lower customer investment.
- Heating fuel security: Customer no longer dependent on oil price volatility; electricity rates more predictable than oil supply.
- Equipment lifespan: Daikin equipment typical 15-20 year service life; substantial value capture beyond payback period.
Lessons Applicable to Other Moderate-Income Households
- HEEHRA program enables electrification access: Without HEEHRA, this customer would not have selected heat pump option; reduced effective cost and faster payback period made decision economically reasonable.
- Income documentation matters: HEEHRA requires income verification through state administrator; advance preparation streamlines application; some customers ineligible due to income level.
- Rebate stacking substantial: HEEHRA $5,000 + Eversource $2,500 + IRA $2,000 = $9,500 total rebates; covers approximately 46% of project cost.
- Cold-climate heat pump performance reliable in Connecticut: Daikin DZ19VA181 operates to −13°F; well within Hartford's 4°F winter design; backup heat strip provides reassurance for occasional extreme conditions.
- Electrical service capacity sometimes limits installation: 100A service marginal for heat pump installations; some homes require service upgrade ($1,800-$3,800 from electrician) before HVAC work proceeds.
- Existing ductwork usually adequate: Mid-century home ductwork typically functional with minor sealing improvements; full duct replacement rarely required.
- Oil-to-electric conversion eliminates supply concerns: Eliminates oil delivery scheduling, price volatility, and tank decommissioning cost over time.
Frequently Asked Questions
- What is the HEEHRA program and who qualifies?
- HEEHRA (High-Efficiency Electric Home Rebate Act) is part of the federal Inflation Reduction Act of 2022. The program provides point-of-sale rebates for electrification projects in income-qualified households. Eligibility: (1) Low-income households (under 80% area median income): rebates cover up to 100% of installed cost for qualified equipment, capped at $8,000 for heat pumps. (2) Moderate-income households (80%-150% area median income): rebates cover up to 50% of installed cost, capped at $8,000 for heat pumps. (3) Income verification: required through state administrator; documentation typically includes tax returns, pay stubs, or other income documentation. (4) Connecticut administrator: Connecticut Green Bank coordinates HEEHRA administration; specific application process and documentation requirements vary. (5) Eligible equipment: heat pumps, heat pump water heaters, electric stove/range, electric clothes dryers, and other electrification equipment. (6) Project requirements: equipment must meet specific efficiency standards; installation by participating contractor required. We coordinate HEEHRA application as part of project scope; income verification handled by state administrator.
- How do HEEHRA, Eversource rebate, and IRA tax credit work together?
- The three programs stack to reduce effective customer cost substantially. (1) HEEHRA rebate: applied as point-of-sale discount; customer doesn't need to file for reimbursement; immediate cost reduction. (2) Eversource cold-climate heat pump rebate: typically processed after equipment installation and commissioning; check mailed to customer or applied against utility bill; not a point-of-sale rebate in most cases. (3) Federal IRA 25C tax credit: claimed on annual federal tax return; non-refundable credit (must have sufficient federal tax liability); applied year after installation. For this case study: HEEHRA $5,000 + Eversource $2,500 + IRA $2,000 = $9,500 total rebates against $20,505 project cost; net customer investment $11,005. Customer paid initial $15,505 ($20,505 minus point-of-sale HEEHRA $5,000); subsequently received Eversource $2,500 rebate processing approximately 8-12 weeks after installation; IRA credit applied to 2025 tax return reducing federal tax owed by $2,000.
- Will a heat pump work in a small Connecticut home with modest envelope efficiency?
- Yes — the case study's 1955 ranch with modest envelope efficiency demonstrates this. Considerations for similar homes: (1) Equipment sizing: properly sized to actual heat loss (48,000 BTU/hr in this case study); right-sizing more important than oversizing. (2) Backup heat strip capacity: 6 kW heat strip adequate for occasional extreme conditions; larger capacity sometimes needed for less efficient envelopes. (3) Operating cost reality: electricity cost vs. previous heating fuel determines economic outcome; heat pump efficiency (HSPF2 9.2 in this case) compensates for somewhat higher electricity vs. fuel cost per BTU. (4) Comfort: modern heat pumps provide better humidity control and temperature distribution than older equipment regardless of envelope efficiency. (5) Envelope improvements complement but aren't prerequisite: insulation and air sealing upgrades reduce heat pump operating cost but heat pump operation is feasible without envelope work.
- What if my home's electrical service is too small for heat pump installation?
- Service capacity assessment required during diagnostic visit. Options when service is undersized. (1) Service upgrade: electrical service replacement from 100A to 200A typical cost $1,800-$3,800; sometimes higher for complex situations. (2) Energy management: some heat pump systems include load management features that prevent simultaneous operation of high-amperage loads; allows smaller service. (3) Reduced backup capacity: smaller backup heat strip (6 kW instead of 10 kW) reduces simultaneous load; appropriate for moderate-efficiency homes. (4) Phased approach: heat pump installation now, service upgrade later when needed for other electrification (EV charger, electric water heater). (5) Decline heat pump option: if service upgrade cost is prohibitive, gas or oil furnace replacement may make more sense. For this case study, the 100A service was marginal but adequate for the installation; load management capability prevented service upgrade requirement.
- How can I find out if I qualify for HEEHRA in Connecticut?
- Several approaches. (1) Connecticut Green Bank: the state administrator for HEEHRA; their website (ctgreenbank.com) provides eligibility checker and application information; income limits based on county median household income. (2) Income calculator: most HEEHRA programs provide online income calculators where you enter household size and income to determine eligibility tier. (3) Documentation requirements: typically prior year tax return (Form 1040), pay stubs, or other income documentation; specific requirements vary by administrator. (4) Hartford County area median income (2025): approximately $96,000 for two-person household; 80% AMI = $76,800; 150% AMI = $144,000. (5) Application timing: HEEHRA can be applied before HVAC project to determine eligibility; some customers verify eligibility before scheduling installation. (6) Contractor coordination: participating contractors (like us) can help coordinate HEEHRA application as part of project scope; we provide guidance on documentation and process. For specific questions about HEEHRA eligibility, contact Connecticut Green Bank directly.
Contact Biozura Heating and Air
For HEEHRA-eligible heat pump installation consultation in New Britain and surrounding areas, contact us. Tomás Reyes leads heat pump installations (Daikin Comfort Pro certified). Eversource Participating Contractor #CT-EVS-22-04612. Connecticut DCP Unlimited HVAC License #S1-0414829.
- Emergency Line (24/7): (860) 955-4428
- Address: 10 N Main St #377, West Hartford, CT 06107
- Email: info@biozuraheatingairconditioning.xyz
- Connecticut DCP Unlimited HVAC License: #S1-0414829
- EPA Section 608 Universal: #608U-2010-447831 (Tomás Reyes)
- Eversource Participating Contractor: #CT-EVS-22-04612
Office Hours
- Emergency Service: 24 hours a day, 7 days a week
- Office Staff: Monday – Saturday, 9:00 AM – 5:00 PM
- Closed: Sundays and State/Federal Holidays (emergency line always active)