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In Texas, AC + gas furnace is the default HVAC setup. A heat pump replaces both with one unit. This guide compares upfront cost, annual operating cost, and total cost of ownership over 5 and 10 years — with TX-specific pricing, utility rebates, and climate data.
$1.5-3K
HP Upfront Savings
$700-1.4K
Annual Operating Savings
$6.5-13K
5-Year TCO Savings
Up to $3K
TX Utility Rebates
25C Tax Credit: $0 in 2026. Section 25C expired December 31, 2025 under the OBBBA. No federal tax credit for heat pumps or energy efficiency improvements. TX utility rebates are the only incentive.
Texas is unique: nearly every home has a central AC + gas furnace setup. The heat pump replaces both. This is not a minor upgrade — it is a system consolidation that fundamentally changes your HVAC economics.
2 Systems
AC + Gas Furnace (current TX default)
1 System
Heat Pump (heats AND cools)
7-8 months
TX Cooling Season
80% of HVAC energy
2-3 months
TX Heating Season
20% of HVAC energy
30-45F lows
Mild Winters
HP COP 3.0-4.0 in TX
The heat pump is cheaper upfront because one unit replaces two.
| Cost Category | AC + Gas Furnace | Heat Pump | Difference |
|---|---|---|---|
| Equipment | $4,000-$8,000 (AC) + $3,000-$6,000 (furnace) | $5,500-$11,000 | HP saves $1,500-$3,000 |
| Installation labor | $2,000-$4,000 (two units) | $1,500-$3,000 (one unit) | HP saves $500-$1,000 |
| Thermostat | $200-$400 (dual-fuel capable) | $150-$300 (standard) | HP saves $50-$100 |
| Ductwork modification | $0 (existing ducts) | $0 (same ducts) | Same |
| Gas line maintenance | $100-$200/year | $0 (all electric) | HP saves $100-$200/yr |
| Utility rebate | $0 | $300-$3,000 | HP advantage |
| Total upfront | $7,000-$14,000 | $5,500-$11,000 | HP saves $1,500-$3,000 |
The heat pump wins on every operating cost category. Lower cooling bills, lower heating bills, one maintenance contract, and no gas delivery charge.
| Category | AC + Gas Furnace | Heat Pump |
|---|---|---|
| Annual cooling | $1,400-$1,800 (SEER 13-16) | $1,000-$1,300 (SEER2 16-20) |
| Annual heating | $800-$1,200 (gas at $1.10/therm) | $350-$550 (COP 3.5 at $0.14/kWh) |
| Maintenance (annual) | $300-$500 (2 contracts) | $150-$250 (1 contract) |
| Gas delivery charge | $15-$25/month year-round | $0 (no gas needed) |
| Total annual operating | $2,880-$3,920 | $1,500-$2,100 |
| Annual savings with HP | $1,080-$1,820/year |
Based on 3-ton system, 2,000 sq ft TX home. Gas at $1.10/therm, electric at $0.14/kWh. AC assumed SEER 14, heat pump SEER2 18. Gas furnace 92% AFUE, heat pump COP 3.5.
Includes upfront cost (mid-range: $10,500 for AC+furnace, $8,000 for HP minus $1,000 avg rebate = $7,000) + cumulative operating costs.
| Year | AC + Furnace (Cumulative) | Heat Pump (Cumulative) | HP Savings |
|---|---|---|---|
| Year 1 | $10,500 | $7,100 | $3,400 |
| Year 2 | $13,800 | $8,800 | $5,000 |
| Year 3 | $17,100 | $10,500 | $6,600 |
| Year 4 | $20,400 | $12,200 | $8,200 |
| Year 5 | $23,700 | $13,900 | $9,800 |
The savings accelerate over time. By Year 10, the heat pump has saved $18,800 vs AC + furnace.
| Year | AC + Furnace (Cumulative) | Heat Pump (Cumulative) | HP Savings |
|---|---|---|---|
| Year 5 | $23,700 | $13,900 | $9,800 |
| Year 6 | $27,300 | $15,700 | $11,600 |
| Year 7 | $30,900 | $17,500 | $13,400 |
| Year 8 | $34,500 | $19,300 | $15,200 |
| Year 9 | $38,100 | $21,100 | $17,000 |
| Year 10 | $41,700 | $22,900 | $18,800 |
10-Year Heat Pump Savings vs AC + Furnace
$18,800
Lower upfront + lower operating + utility rebates
Your optimal timing depends on the condition of your current equipment.
TX utilities rebate heat pump installations but offer ZERO rebates for AC + furnace replacements. This is an additional financial advantage of choosing a heat pump.
Austin Energy
~$3,000
Austin metro
CPS Energy
$100-275/ton
San Antonio
Oncor
$300-600
DFW, Waco, Tyler
CenterPoint
~$500
Greater Houston
CoServ
$350-500
Denton County
AC+Furnace
$0
No utility rebates
Yes, both upfront and long-term. A heat pump costs $5,500-$11,000 installed vs $7,000-$14,000 for separate AC + furnace. Annual operating costs are $700-$1,400 lower with a heat pump due to superior cooling efficiency (SEER2 16-24 vs SEER 13-16 for older ACs) and electric heating being cheaper than gas in TX mild winters. 5-year TCO: heat pump saves $6,500-$13,000.
The best time is when either your AC or furnace needs replacement. If your AC is 10+ years old and needs a $4,000-$8,000 replacement, the incremental cost to get a heat pump that also heats is small. If both are aging, replacing two systems with one heat pump saves $1,500-$3,000 in upfront equipment cost. Other triggers: rising gas bills, safety concerns (CO risk from old furnace), or desire to simplify to one system.
Yes. TX winters are mild compared to the Northeast. Even during cold snaps (20-30F in DFW, 35-45F on the Gulf Coast), modern heat pumps maintain full efficiency with COP 3.0-4.0. Only during extreme events like Winter Storm Uri (2021) when temperatures hit single digits do heat pumps lose significant capacity. For North TX homeowners concerned about rare extremes, a dual-fuel (hybrid) system pairs a heat pump with a gas furnace backup.
Heating savings: $450-$650/year. A gas furnace at $1.10/therm and 92% AFUE costs ~$990/year for heating. A heat pump at COP 3.5 and $0.14/kWh costs ~$460/year for the same heating load. Additionally, the heat pump cools more efficiently than your old AC: cooling savings of $300-$500/year. Total annual savings: $700-$1,400/year plus $150-$250 in reduced maintenance (one contract vs two).
A 3-ton heat pump directly replaces a 3-ton AC + furnace. Unlike the Northeast where heat pumps must be oversized for heating, TX sizing is based on cooling load (the dominant factor). Your existing ductwork typically works without modification. A Manual J load calculation (required by TX building code) confirms the right size. Most TX homes need 3-5 ton systems.
Yes. Austin Energy offers ~$3,000, CPS Energy $100-275/ton, Oncor $300-600/unit, and CenterPoint ~$500 for qualifying heat pump installations. There is no federal tax credit (25C expired Dec 2025). Note: there are NO rebates for replacing AC + furnace with new AC + furnace — rebates only apply to heat pumps.
A heat pump lasts 15-20 years in TX (running hard in summer reduces vs Northern lifespan). An AC unit lasts 15-20 years, and a gas furnace lasts 20-30 years. While the furnace may outlast the heat pump, you save $700-$1,400/year in operating costs — the savings over 15 years ($10,500-$21,000) far exceed the cost of any lifespan difference.
A dual-fuel system (heat pump + gas furnace backup) costs $6,000-$14,000 installed — $500-$3,000 more than a heat-pump-only system. In Texas, it is generally unnecessary. TX winters are mild enough that a standard heat pump handles 95%+ of winter conditions. Dual-fuel is worth considering only in the TX Panhandle (Amarillo, Lubbock) or for homeowners who experienced Uri-level events and want gas backup.
We calculate your real savings based on your current equipment age, utility, and home size. Personalized 5-year and 10-year TCO with your actual TX rates.