Idaho (ID) · State tax: 5.695% · Property tax: 0.69% · Median home (ZHVI): $465,000
Energy costs in Idaho are shaped by the cost of living index of 92.236 and local utility rates. Idaho's moderate energy costs still offer significant savings potential from efficiency upgrades. With a median home price of $465,000, energy-efficient improvements also boost property value. The federal IRA provides 30% tax credits for heat pump installations through 2032. Idaho's 5.695% state income tax may offer additional energy efficiency incentives.
Cost-of-living index scales typical utility spend for the heat pump calculator in Idaho. Every row cites a primary public dataset. Numbers reflect the most recent vintage available; refresh cadence is documented in the methodology.
The Heat Pump Calculator runs a well-known formula (principal × rate, discounted cash flow, amortization, or equivalent) client-side and layers on Idaho's tax and cost-of-living inputs. State-specific numbers — brackets, exemptions, and averages — come from public federal / state datasets cited in the sources section.
Same formula, different inputs. Each city name links to its own pSEO page where the calculator is pre-filled with local medians.
| City | Median home | Median rent | HUD FMR 2BR | Median income |
|---|---|---|---|---|
| Boise, ID | $488,570 | $1,794/mo | $1,650/mo | $82,694 |
| Meridian, ID | $465,000 | $1,550/mo | $1,425/mo | $82,500 |
| Nampa, ID | $380,000 | $1,300/mo | $1,200/mo | $62,200 |
Sources: Zillow ZHVI + ZORI[1], HUD FMR[2], Census ACS[3], Freddie Mac PMMS[4].
Moving one state over changes the heat pump numbers. Compare median home value (Zillow ZHVI), top marginal income tax rate, effective property tax rate, and the BEA all-items Regional Price Parity across Idaho and its border states.
| State | Median home | Top inc tax | Prop tax rate | RPP (US=100) |
|---|---|---|---|---|
| Idaho (this page) | $465,000 | 5.70% | 0.69% | 92.2 |
| Montana | $460,000 | 5.90% | 0.83% | 91.0 |
| check Nevada | $430,000 | None | 0.56% | 97.9 |
| Oregon | $490,000 | 9.90% | 0.87% | 104.8 |
| Utah side-by-side | $505,000 | 4.55% | 0.58% | 95.7 |
Sources: Zillow ZHVI[1], state Departments of Revenue / Tax Foundation[2], Tax Foundation property taxes[3], BEA Regional Price Parities[4].
These calculators share inputs with the heat pump formula, so pair them to pressure-test your answer from multiple angles.
| Metric | Idaho | National Avg | MT | NV | OR |
|---|---|---|---|---|---|
| Median Home Price | $465,000 | $420,000 | $475,000 | $465,000 | $535,000 |
| Property Tax Rate | 0.69% | 1.07% | 0.84% | 0.6% | 0.97% |
| State Income Tax | 5.695% | 4.6%* | 6.84% | None | 9.9% |
| Avg Insurance Cost | $870/yr | $1,544/yr | $1,320/yr | $1,560/yr | $1,440/yr |
| Cost of Living Index | 92.236 | 100 | 104 | 109 | 115 |
| Household Income — p25 | $43,600 | $41,401 | $45,609 | $42,000 | $45,569 |
| Household Income — p50 (median) | $81,700 | $83,592 | $82,000 | $80,000 | $89,511 |
| Household Income — p75 | $137,996 | $153,000 | $142,396 | $140,000 | $152,459 |
*Average of states that levy an income tax. 2026 estimates. Idaho's homeowner exemption reduces taxable property value by up to 50% (max $125K).[3] Income percentiles from DQYDJ/Census CPS 2024[4].
Track take-home pay: 5.695% state income tax plus federal + FICA reduces gross wages by roughly 31% in Idaho.
Anchor savings goals to the Idaho cost of living index (92.236). A national 20% savings rate needs adjustment up or down depending on local expense floors.
Use tax-advantaged accounts first: 401(k), HSA, IRA. Contributions to pre-tax accounts save 5.695% at the state level plus your federal marginal rate.
Every number on this page reads from the same CalcFi data repository used by the Live Data pages below — the figures stay consistent.
Home Prices by State
Zillow ZHVI across all 50 states
Property Tax by State
Effective rate × ZHVI = annual bill
Household Income by State
FRED real median + percentile bands
Cost of Living by State
BEA RPP all-items + housing
No-Income-Tax States
Full list + trade-offs
Current Interest Rates
Treasury curve + PMMS + FDIC
CalcFi pSEO pages combine three inputs: (1) the calculator formula itself, which runs client-side so no inputs leave your browser; (2) state-level financial constants from primary public datasets; and (3) national benchmarks for comparison. The Idaho page uses the property tax rate (0.69%), median home price ($465,000), and 5.695% state income tax from the sources listed below.
Refresh cadence:state tax brackets and minimum wage rates are reviewed annually after each state's legislative session. Property tax, median home price, insurance, and cost-of-living figures are reviewed annually against the primary sources. Income percentiles are refreshed when the Census CPS/IPUMS releases update (typically September). Page-level dateModified matches the last editorial review date, shown above.
Known limits: statewide averages mask large intra-state variance — county-level property tax and metro-level home prices differ significantly from the figures shown. For the most precise calculations, cross-check the output against your actual county assessor and the latest federal/state tax tables at filing time.
Use Heat Pump Calculator for any city in Idaho.
Every number on this page cites a primary public dataset. Last reviewed (auto-bumped by the next ISR refresh after an ETL run).
CalcFi does not sell data. If you spot an error, email hello@calcfi.app with the URL and the correct figure.
Estimate annual savings and payback period when switching to a heat pump. Compare heat pump costs to gas, oil, electric resistance, or propane heating systems.
Auto-updated · Verified daily against IRS, Fed & Treasury sources
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The 30% federal investment tax credit reduces your tax liability — it is a credit, not a refund. If your total federal tax owed is $3,000 and the ITC credit is $6,300, you use $3,000 this year and carry forward $3,300. Carry-forward is allowed, but low-income households may not fully capture the credit.
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Based on your inputs
Payback in ~99 years (with 30% IRA credit) — Heat pump COP: 2.9
| Current Heating Cost | $1,800 |
|---|---|
| Heat Pump Heating Cost | $2,295 |
| Current Cooling Cost | $600 |
| Heat Pump Cooling Cost | $390 |
| Installation Cost (est.) | $12,000 |
| Net Cost (after IRA credit) | $8,400 |
| 10-Year Savings | $-2,850 |
| Efficiency Comparison | COP 2.9 vs 85% AFUE |
Analyze 3+ calcs to unlock your Financial Picture dashboard (cross-analysis of all your numbers).
The term "efficiency" is misleading for heat pumps because it exceeds 100%. A furnace burning gas converts chemical energy to heat with 80-96% efficiency -- some energy is lost up the chimney. A heat pump does not generate heat. It moves existing heat from outside air into your home using a refrigeration cycle.
The Coefficient of Performance (COP) measures heat pump efficiency: COP = heat energy output / electrical energy input. A COP of 3.0 means for every 1 kWh of electricity consumed, the heat pump delivers 3 kWh of heat energy. This appears to violate thermodynamics but does not -- the heat pump is not creating energy, it is transporting environmental heat using electricity as the transport mechanism.
In practical terms: a COP 3.0 heat pump heating a 2,000 sqft home in Zone 4 might consume $500 worth of electricity to deliver $1,500 worth of heat. The equivalent in a gas furnace would cost $600-$800. The equivalent in electric resistance would cost $1,500.
COP varies with outdoor temperature. At 47F (mild), a good heat pump achieves COP 3.5-4.0. At 17F (cold), COP drops to 2.0-2.5. At 0F, COP drops to 1.5-2.0. Even at 0F, the heat pump is 50-100% more efficient than electric resistance heating. This is why heat pumps are now viable even in cold climates.
The gas-to-heat-pump comparison depends on three variables: your gas price, your electricity price, and your climate zone.
Favorable for Heat Pump (saves $400-$800/year):
Scenario: Gas at $1.50/therm, electricity at $0.12/kWh, Zone 3-4
Gas furnace (90% AFUE): Uses 500 therms/year = $750
Heat pump (HSPF 10, COP 2.93): Uses 5,000 kWh/year = $600
Annual heating savings: $150
Plus cooling savings (SEER 20 vs old SEER 13): $150
Total annual savings: $300
With IRA credit: Installation $12,000 - $3,600 credit = $8,400 net
Payback: 8,400 / 300 = 28 years. Not great economics for heating alone.
But wait -- the old AC also needs replacement (it is 15+ years old). A new AC alone costs $5,000-$7,000. The heat pump replaces BOTH the furnace AND the AC. The incremental cost of the heat pump over just an AC is only $3,000-$5,000. After the IRA credit, the incremental cost is $1,000-$2,000.
Revised payback on incremental cost: 1,500 / 300 = 5 years. Now the economics are excellent.
Very Favorable for Heat Pump (saves $800-$1,500/year):
Scenario: Electric resistance heating, electricity at $0.14/kWh
Electric resistance: 15,000 kWh/year = $2,100
Heat pump (COP 2.93): 5,100 kWh/year = $714
Annual savings: $1,386
Payback (after IRA credit): $8,400 / $1,386 = 6 years. Then 14+ years of pure savings.
This is the clearest upgrade case. If you heat with electric resistance (baseboard heaters, electric furnace, space heaters), a heat pump is almost always the correct financial decision.
Traditional heat pumps lost significant capacity below 30F, requiring a backup heating source (electric resistance or gas) for cold days. This "supplemental heat" erased much of the efficiency advantage in cold climates.
Cold climate heat pumps (also called "hyper heat" or "low-ambient" heat pumps) use advanced compressor technology -- specifically, inverter-driven variable-speed compressors with enhanced vapor injection -- to maintain heating capacity down to -15F or lower.
Mitsubishi's Hyper-Heat line maintains 100% rated capacity down to 5F and 87% capacity at -13F. Daikin, Fujitsu, and other manufacturers offer similar cold-climate models. These units achieve COP 2.0 or better at temperatures where older heat pumps would have switched to backup resistance heat.
For homeowners in Zones 5-7 (Chicago, Minneapolis, Denver), cold climate heat pumps now make practical and economic sense. The key is selecting a unit specifically rated for cold climate operation and having it sized by a Manual J load calculation. Our calculator applies a cold climate penalty factor for Zones 6-7 to account for reduced efficiency at extreme temperatures.
The Inflation Reduction Act (2022) provides a 30% tax credit for qualifying heat pump installations, up to $2,000 per year. This credit is available through 2032 and has made heat pumps the most financially attractive HVAC upgrade available.
To qualify: the heat pump must be ENERGY STAR certified (most modern heat pumps qualify). The credit covers equipment AND installation labor. It is a tax credit, not a deduction -- it directly reduces your tax bill dollar for dollar.
Example: $14,000 heat pump installation. 30% credit = $4,200, capped at $2,000. Your tax bill decreases by $2,000 in the year of installation. Some installations under $6,667 will see the full 30% benefit since the cap is not reached.
Additionally, many states offer their own rebates ($500-$3,000) and some utilities offer incentives ($200-$1,500). Stacking federal credits with state rebates can reduce the net cost of a heat pump installation by 30-50%.
For high-income homeowners already planning a tax-efficient year, the heat pump credit can be strategically timed to maximize benefit. Use our tax bracket calculator to understand how the credit affects your specific tax situation.
Heat pump sizing follows the same BTU methodology as traditional HVAC but with two critical differences:
1. Size to Heating Load (Not Cooling): In most US climates, the heating load exceeds the cooling load. A heat pump must be sized to handle the heating requirement because supplemental electric resistance heat (which kicks in when the heat pump cannot keep up) is expensive. A properly sized heat pump handles 90-100% of heating hours without backup.
2. Do Not Oversize: Oversized heat pumps short-cycle in cooling mode (just like oversized AC units), causing poor humidity control. Variable-speed heat pumps mitigate this because they modulate down to low capacity, but even variable-speed units should not be dramatically oversized.
The ideal approach is a Manual J load calculation followed by selecting a heat pump that meets 95-100% of the heating load on the coldest design day. For the rare extreme-cold events that exceed design temperature, brief periods of supplemental heat are acceptable and more cost-effective than oversizing the heat pump.
Use our BTU calculator to estimate your heating and cooling loads before sizing a heat pump.
A dual fuel system pairs a heat pump with a gas furnace. The heat pump handles heating above a balance point temperature (typically 30-40F), and the gas furnace takes over when temperatures drop below the balance point.
This approach captures most of the heat pump's efficiency advantage (the majority of heating hours are above 30-40F in most US climates) while avoiding cold-climate efficiency losses. The existing gas furnace serves as backup, eliminating concerns about extreme cold performance.
Dual fuel is popular in Zones 5-6 where gas is cheap and winter temperatures regularly drop below 20F. The system automatically switches between heat pump and gas based on whichever is more cost-effective at the current temperature -- the ultimate efficiency optimization.
The downside: dual fuel systems are more complex and expensive to install ($2,000-$4,000 more than a heat pump alone) because you maintain both systems. They also perpetuate gas infrastructure dependency, which may conflict with electrification goals.
Air source ducted heat pumps are the direct replacement for a traditional furnace/AC combination. An outdoor unit (condenser/compressor) connects to an indoor air handler that distributes heated or cooled air through existing ductwork.
How They Work: In heating mode, refrigerant in the outdoor unit absorbs heat from outdoor air (even in cold weather, outdoor air contains usable heat down to about -15F). The refrigerant is compressed (which increases its temperature) and pumped indoors, where it releases heat into the air handler. In cooling mode, the cycle reverses -- heat is absorbed indoors and released outdoors.
Best For: Homes with existing ductwork in good condition. This is the most common upgrade path because it reuses existing infrastructure, minimizing installation disruption.
Pros: Lowest installation cost for whole-house heating/cooling. Uses existing ductwork. Single thermostat controls the whole house. Widest range of equipment options from all major manufacturers. Most contractors are experienced with installation and maintenance.
Cons: Efficiency is reduced by duct losses (20-30% of conditioned air can leak through duct joints). No room-by-room temperature control without adding a zoning system. Performance is limited by the condition and design of existing ductwork.
Cost: $8,000-$16,000 installed (depending on size, brand, and complexity). After IRA tax credit: $5,600-$14,000.
Mini-splits consist of a small outdoor unit connected by refrigerant lines to one or more wall-mounted indoor units. Each indoor unit independently controls the temperature in its room.
Best For: Homes without ductwork (old homes with radiators, additions, converted garages), homes with comfort problems (hot/cold rooms), and supplementing existing HVAC for specific rooms.
Pros: Highest efficiency (SEER 20-28) because there is no duct loss. Individual room temperature control. Easy to install without ductwork modifications. Extremely quiet operation. Variable-speed compressor standard on most units.
Cons: Wall-mounted indoor units are visible and may not suit all aesthetics. Each zone needs its own indoor unit ($3,000-$5,000 per zone). A whole-house mini-split system (5-6 zones) costs $15,000-$30,000, more than a ducted system. Filtration is limited to the small filters in each indoor unit.
Cost: Single zone: $3,000-$5,000 installed. Multi-zone (2-4 heads): $7,000-$15,000. Whole-house (5-8 heads): $15,000-$30,000.
Mini-splits are the highest-efficiency option available. A single-zone mini-split for a problem room (the always-hot upstairs bedroom, the freezing bonus room) is one of the best ROI upgrades for comfort and efficiency.
Ground source heat pumps use the earth as a heat source/sink instead of outdoor air. Underground temperatures remain constant at approximately 50-60F year-round (below the frost line), providing a much more stable heat source than outdoor air.
How They Work: A loop of pipe buried underground (horizontally or vertically) circulates a water/antifreeze solution. This solution absorbs heat from the ground in winter and deposits heat into the ground in summer. An indoor heat pump unit uses this moderate-temperature fluid to heat or cool the home.
Efficiency: COP 4.0-5.0 in heating mode (vs 2.5-3.5 for air source). This means 300-400% more heat output than electricity consumed. In cooling mode, efficiency is similarly superior. The ground's constant temperature eliminates the performance degradation that air source heat pumps experience in extreme hot or cold weather.
Cost: $20,000-$40,000 installed, primarily due to the ground loop. Horizontal loops (trenches 4-6 feet deep, 400-600 feet of pipe per ton) require large yard space. Vertical loops (boreholes 150-300 feet deep) work on smaller lots but cost more per ton. The IRA provides a 30% tax credit for geothermal installations (no cap, unlike the $2,000 cap for air source), making the effective cost $14,000-$28,000.
Best For: New construction (where excavation costs are lower), homes with high heating loads in cold climates, homeowners planning 15+ years of ownership (to capture the full payback), and properties where ground conditions are favorable (not solid rock).
Payback: 10-15 years for geothermal vs air source. However, the ground loop lasts 50+ years, while the indoor heat pump unit lasts 20-25 years. Over a 30-year period, geothermal typically costs less than two replacements of an air source system.
Ducted mini-splits hide the indoor unit in a ceiling, attic, or closet space and distribute air through short duct runs. They combine mini-split efficiency with the aesthetic appeal of no visible wall units.
Best For: Renovations where appearance matters, homes where some ductwork exists but is inadequate, and multi-family buildings where wall units are restricted.
Pros: Hidden indoor units (only supply vents are visible). Near-mini-split efficiency (some duct loss, but runs are short). Zoning capability with multiple ducted units.
Cons: Requires ceiling or floor cavity space for the air handler (typically 8-12 inches of depth). Short duct runs must be carefully designed to avoid noise. Cost is 20-30% higher than wall-mounted mini-splits due to ductwork and concealment.
Cost: $4,000-$7,000 per zone installed.
This is arguably the most important technology choice in heat pump selection, regardless of type:
Single-Speed (Fixed): The compressor runs at 100% capacity or not at all. When the thermostat calls for heating/cooling, the system blasts at full power until the set-point is reached, then shuts off. This creates temperature swings (2-3 degree overshoot and undershoot), poor humidity control (the system does not run long enough to dehumidify), and loud operation (full-speed is the only speed).
Variable-Speed (Inverter): The compressor modulates continuously from approximately 25% to 100% capacity. On a mild day, it runs at 30-40% capacity continuously, maintaining the set-point within 0.5 degrees. On a cold day, it ramps to 80-100%. The system runs more hours at lower capacity, which is inherently more efficient than cycling between full power and off.
Variable-speed advantages: 20-30% higher seasonal efficiency, 2-4x better humidity control, dramatically quieter operation (30-40 dB vs 55-65 dB), more consistent temperatures, and longer equipment life (fewer start/stop cycles).
The premium for variable-speed is $2,000-$4,000 over single-speed. For homes in humid climates or with comfort-sensitive occupants, this premium is easily justified. Variable-speed is now standard on premium brands (Mitsubishi, Daikin, Carrier Infinity, Lennox XC25) and increasingly available on mid-range equipment.
To evaluate your home's heating and cooling loads before selecting a heat pump, use our BTU calculator for room-by-room or whole-house sizing.
Savings depend on your current system. Switching from electric resistance heating saves $800-$1,500/year. Switching from gas saves $200-$600/year. Switching from oil or propane saves $400-$1,000/year. Cooling savings from higher SEER add $100-$300/year.
After the 30% IRA tax credit, typical payback is 5-8 years for electric-to-heat-pump conversions and 8-15 years for gas-to-heat-pump. If you are replacing both a furnace and AC simultaneously, the incremental cost of choosing a heat pump over a new AC is very low, making payback 3-5 years.
Yes. Modern cold climate heat pumps maintain heating capacity down to -15F. They achieve COP 2.0+ at these temperatures, still 2x more efficient than electric resistance. In Zones 6-7, dual fuel systems (heat pump + gas backup) are popular for extreme cold events.
COP (Coefficient of Performance) is the ratio of heat output to electricity input. COP 3.0 means 3 units of heat per 1 unit of electricity. HSPF (Heating Seasonal Performance Factor) is the seasonal average, measured in BTU per watt-hour. HSPF / 3.412 = COP. Higher numbers mean more efficient.
Air source ducted: $8,000-$16,000. Mini-split single zone: $3,000-$5,000. Mini-split whole house: $15,000-$30,000. Geothermal: $20,000-$40,000. The IRA provides a 30% tax credit (up to $2,000 for air source, uncapped for geothermal).
For operating cost: heat pumps are cheaper in most markets, especially where electricity is under $0.15/kWh. For upfront cost: gas furnaces are cheaper. For environmental impact: heat pumps produce zero direct emissions. For comfort: variable-speed heat pumps provide better temperature consistency than single-stage furnaces.
Heat pump size is determined by your home's heating load (BTU). A 2,000 sqft home in Zone 4 typically needs 36,000-48,000 BTU (3-4 tons). Use our BTU calculator for a specific estimate. Professional Manual J calculations are recommended for final sizing.
Yes. A heat pump provides both heating and cooling in one system. This is its key advantage -- one installation replaces two appliances. When your furnace or AC needs replacement, a heat pump that handles both is often the most cost-effective long-term choice.
Heat Pump COP = HSPF / 3.412
For electric resistance: New cost = Current cost / Heat pump COP
For gas/oil/propane: Converts fuel cost to BTUs, then calculates equivalent heat pump electricity cost.
Cooling savings based on SEER improvement ratio. Installation cost includes 30% IRA tax credit.
Every formula on this page traces to a federal agency, central bank, or peer-reviewed institution. We cite the rule-makers, not secondhand blogs.
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Calculations are for educational purposes only. Consult a qualified financial advisor for personalized advice.