Choosing a system
Heat pump vs gas furnace in North Texas
In Dallas all three work. A heat pump heats efficiently through mild winters and needs backup heat for a hard freeze; a gas furnace handles the cold but needs a separate AC for summer. Dual fuel pairs a heat pump with a gas furnace and uses each where it is strongest. The right pick depends on gas service, the age of what you have, and your electrical panel.
On this page (14)
- The three options in one minute
- Side by side
- How each one heats a Dallas house
- The freeze question
- What each option costs (published ranges)
- Running costs: what decides them
- Rebates and credits in 2026
- Three Dallas-area scenarios
- How to choose
- Installation details that differ
- What to ask every contractor
- Common mistakes
- Sources
- Questions
The three options in one minute
Heat pump
One outdoor unit cools in summer and reverses to heat in winter, with an indoor air handler. Backup electric heat strips cover the coldest hours.
Gas furnace + AC
A gas furnace heats; a separate central AC cools, with its coil on top of the furnace. The usual setup in many older DFW homes.
Dual fuel is a heat pump paired with a gas furnace instead of electric strips. The heat pump heats most of the winter, and the furnace takes over below a switch-over temperature set at install.
The U.S. Department of Energy says that in moderate climates heat pumps can be an energy-efficient alternative to furnaces and air conditioners, and lists ductless mini-splits as one type of heat pump. North Texas fits that description for most of the heating season, which is why the heat pump question comes up with nearly every AC replacement here.
Cooling is the same job either way
A heat pump and a central AC cool the same way: refrigerant absorbs heat indoors and releases it outside. The difference is what happens in winter. That is why the choice usually comes down to heating, gas service and the electrical panel.
Side by side
| Heat pump | Gas furnace + AC | Dual fuel | |
|---|---|---|---|
| Heating source | Electricity | Natural gas | Electricity, then gas when cold |
| Needs gas service | No | Yes | Yes |
| Backup in a freeze | Electric strips | Not needed | The furnace |
| Outdoor equipment | Heat pump | AC condenser | Heat pump |
| Indoor equipment | Air handler | Furnace with AC coil | Furnace with heat pump coil |
| Electrical load in a freeze | Highest, when strips run | Low (furnace blower) | Low once furnace takes over |
| Federal minimum (split, new) | 14.3 SEER2 and 7.5 HSPF2 | 14.3 SEER2 AC under 45,000 BTU in Texas | 14.3 SEER2 and 7.5 HSPF2 heat pump |
| Main question | Panel capacity for backup heat | Age of the furnace | Switch-over setting |
Texas is in the DOE Southeast region. Since 1 January 2023 a split-system central AC under 45,000 BTU (about 3.75 tons) must be at least 14.3 SEER2 on the date it is installed; larger systems need 13.8. Split heat pumps need 14.3 SEER2 and 7.5 HSPF2 nationwide.
How each one heats a Dallas house
A heat pump moves heat rather than making it. In winter it pulls heat from outdoor air and delivers it inside, which is why it can be efficient when the weather is mild. As the outdoor temperature drops, there is less heat to move, so its output falls just as the house needs more.
A gas furnace burns gas and blows the heat through the ducts. Its output does not depend on the outdoor temperature, so it gives the same heat on a mild day and a freezing night. Efficiency is rated in AFUE: the share of the fuel that becomes heat in the house.
Backup electric strips are simple resistance heaters in the air handler. They work in any weather and are usually the most expensive way to make heat with electricity, which is why how often they run matters more than whether they exist.
The freeze question
In the February 2021 winter storm DFW Airport fell to -2 °F on 16 February and stayed at or below freezing for about 139 hours (13–19 February).
An event like that is rare, but it is exactly when a heat pump’s own output is weakest and the backup heat carries the house. So the question is not whether a heat pump works in Dallas, but how the backup is sized and powered.
DFW averages 20 days a year at or above 100 °F on the 1991–2020 normals, two more than on the 1981–2010 normals. Cooling is still the bigger job here, so size for both seasons rather than picking a system on winter alone.
- Ask how many kilowatts of backup heat are planned, and why.
- Ask whether the panel can carry that backup heat alongside the rest of the house.
- If you have gas service, ask for a dual fuel price as a comparison.
- Ask for the heating load as well as the cooling load from the Manual J calculation.
A power outage stops all three
A gas furnace still needs electricity for its blower and controls. None of these options heats the house without power unless you add a generator or other backup, which is a separate decision.
What each option costs (published ranges)
| Option | Published range | Area |
|---|---|---|
| Ducted heat pump, all sizes | $6,500–$14,500 | DFW |
| Ducted heat pump, 2 ton | $3,500–$8,000 | National |
| Ducted heat pump, 3 ton | $4,200–$9,500 | National |
| Ducted heat pump, 4 ton | $5,200–$11,500 | National |
| Ducted heat pump, 5 ton | $6,000–$13,500 | National |
| 3-ton AC only, existing ducts | $5,500–$16,500 | DFW |
| Gas furnace replacement | $4,000–$10,000 | National |
| Furnace + 3-ton AC together | $10,500–$13,500 | National |
| Panel upgrade, 100 A to 200 A | $1,800–$3,500 | National |
These are published third-party ranges from named contractors and cost publishers, not this site’s prices. DFW and national figures come from different sources and should not be mixed into one total.
No reliable dual fuel price was found, so none is shown. Ask for it as its own line on a quote. Run your own utility rates to compare running costs, and see the Dallas AC installation cost guide for every source.
Running costs: what decides them
Running cost depends on your electricity rate, your gas rate, how efficient each machine is, and how many hours each runs. Texas retail electricity rates vary by plan, and gas rates vary by month, so no single answer applies to every home.
In practice the questions are simpler than the math. How cold does it get, for how long? How often would backup strips run? And what do you pay per kWh and per unit of gas on your own bills?
- Pull the last winter’s electric and gas bills before the home visit.
- Enter your rates in the heat pump vs AC calculator.
- Ask the contractor for the HSPF2 of the heat pump and the AFUE of the furnace being quoted.
- ENERGY STAR says to consider replacement when a heat pump or air conditioner is more than 10 years old, and that a correctly installed high-efficiency unit can save up to 20 percent on heating and cooling costs.
Rebates and credits in 2026
- Atmos Energy’s Mid-Tex appliance rebate program, running 1 July 2026 to 30 June 2027 for its Mid-Tex residential customers, pays $300 for an ENERGY STAR gas furnace rated 90% AFUE or higher and $350 for 95% AFUE or higher. Applications close 12 months after purchase or installation.
- The federal Energy Efficient Home Improvement Credit (25C) applied to qualifying property placed in service before 31 December 2025. It is not available for a system installed in 2026.
- Oncor, the wire-and-meter utility for most of DFW, pays residential efficiency incentives through participating service providers, not to homeowners. Amounts change by year; ask the contractor whether they participate and verify on the program site. No Oncor amount is shown here because none could be verified.
- Electric utility programs differ by provider; Garland, for example, has its own city utility, Garland Power & Light.
The Atmos rebate favors a high-efficiency furnace
If you are keeping gas heat or choosing dual fuel and you are an Atmos Mid-Tex customer, ask whether the quoted furnace is ENERGY STAR and 90% or 95% AFUE, and keep the paperwork for the application window.
Three Dallas-area scenarios
A. Healthy furnace, old AC. Say a hypothetical 1990s Plano house has gas service, a furnace a few years old and an AC that has failed. The usual comparison is a new AC coil and condenser against a heat pump coil and outdoor unit on the same furnace, making it dual fuel. Both reuse the furnace.
B. Both at end of life. Say an older Richardson house has an AC and furnace of the same age. Price three ways: AC plus a new furnace, a heat pump with air handler and strips, and dual fuel. Check the panel for the all-electric option.
C. All-electric with strip heat. Say a house has no gas and heats with electric strips behind a central AC. A heat pump is the usual upgrade, because it makes most winter heat more efficiently than the strips that already exist, and keeps them as backup.
| Scenario | Options to price | Key check |
|---|---|---|
| A. Healthy furnace, old AC | Central AC vs heat pump (dual fuel) | Coil fits the furnace; switch-over setting |
| B. Both at end of life | AC + furnace, heat pump, dual fuel | Panel capacity; gas line condition |
| C. All-electric | Heat pump vs like-for-like AC | Backup heat size |
How to choose
- If the furnace is healthy and you have gas, compare central AC with adding a heat pump (dual fuel).
- If both AC and furnace are old, price a heat pump against AC plus a new furnace, and ask for dual fuel too.
- If the home is all-electric with resistance heat, a heat pump is the usual upgrade.
- In every case, ask for heating and cooling loads, and check the panel.
- Compare quotes on scope, not just totals: backup heat, thermostat, line set, permit.
For the wider set of systems, including ductless, see AC system options for Dallas homes and heat pump installation.
Installation details that differ
- Thermostat. A heat pump, and especially dual fuel, needs a thermostat set up for its staging. Ask whether it is included. Published installed prices for a smart thermostat run $120–$450 (national).
- Switch-over temperature. On dual fuel, ask what temperature the system hands off to the furnace and how you can change it.
- Defrost. A heat pump periodically defrosts its outdoor coil in cold, damp weather. Brief steam from the outdoor unit is normal; ask the installer to show you.
- Condensate. High-efficiency furnaces make condensate that needs a drain. Ask where it runs.
- Permit and license. Texas licenses HVAC contractors through TDLR. See Dallas AC installation permits and verify a Texas HVAC contractor.
What to ask every contractor
- Which options did you price for my house, and why did you leave any out?
- What are the heating and cooling loads from the Manual J calculation?
- How many kilowatts of backup heat are planned, and can my panel carry them?
- On dual fuel, what is the switch-over temperature and how do I change it?
- What are the SEER2 and HSPF2 of the heat pump, and the AFUE of any furnace?
- Does the quoted furnace qualify for the Atmos Mid-Tex rebate, and who files the paperwork?
- Is the thermostat included and set up for this system?
- Who pulls the permit, and will the permit number be on the invoice?
Line the answers up in the quote comparison tool so each option is compared on the same scope. A quote that leaves out backup heat, the thermostat or the permit is not cheaper, only less complete.
Common mistakes
- Choosing on winter alone. With about 20 days a year at 100 °F or hotter, cooling is the bigger job in Dallas.
- Ignoring backup heat size. Too little leaves you cold in a freeze; too much may need a panel upgrade.
- Assuming the 25C tax credit applies. It ended for systems placed in service after 31 December 2025.
- Replacing the AC on an old furnace without pricing dual fuel. The coil sits on the furnace either way.
- Counting on a utility rebate before checking. Amounts change, and some are paid through contractors, not to you.
Sources
- U.S. Department of Energy, Energy Saver, "Heat Pumps" (retrieved 2026-10-20)
- AHRI, "2023 Energy Efficiency Standards"; DOE regional standards (retrieved 2026-09-23)
- NWS Fort Worth, "February 2021 Winter Event" (retrieved 2026-10-20) — verify before relying on it
- NWS Fort Worth, "1991–2020 Normals" (retrieved 2026-10-20)
- ENERGY STAR, "When is it time to replace?" (retrieved 2026-09-23)
- Atmos Energy, Mid-Tex Appliance Rebate Program (retrieved 2026-10-20)
- IRS, Energy Efficient Home Improvement Credit (retrieved 2026-09-23)
- Oncor "Take A Load Off Texas" (retrieved 2026-09-23) — verify before relying on it
- Texas Department of Licensing and Regulation, Air Conditioning and Refrigeration program (retrieved 2026-09-23)
- PickHVAC, heat pump installation cost (National, page dated 2026-05-22) (retrieved 2026-10-20)
- Budget Heating, furnace replacement cost guide (National, page dated 2026 (title)) (retrieved 2026-10-20)
- Voltflow, electrical panel upgrade cost 2026 (National, page dated 2026-04) (retrieved 2026-10-20)
- PickHVAC, thermostat installation cost (National, page dated 2026-05-22) (retrieved 2026-10-20)
- Cold Factor Heating & Air (Flower Mound, TX) (page dated 2026) (retrieved 2026-09-23)
- HVAC Services Pro (DFW) (page dated 2026-04-13) (retrieved 2026-09-23)
- HVAC Services Pro, DFW installation guide (page dated 2026-03-06) (retrieved 2026-09-23)
- HVACProjectCost.com, Dallas page (page dated 2026-08-02) (retrieved 2026-09-23)
- HVACProjectCost.com, Dallas page (page dated 2026-08-02) (retrieved 2026-09-23)
- HVAC Services Pro, DFW installation guide (page dated 2026-03-06) (retrieved 2026-09-23)
Questions
Is dual fuel worth it in Dallas?
It can suit a home with gas service and a newer furnace: the heat pump heats efficiently most of the winter and the furnace covers the coldest hours. Get both quotes before deciding.
Can a heat pump replace my gas furnace?
Yes, with an air handler and backup heat in place of the furnace. Check that the electrical panel can carry the backup heat.
Will a heat pump keep my house warm in a freeze like 2021?
Its own output falls in deep cold, so backup heat does the work. Ask how the backup is sized, whether the panel can carry it, or whether dual fuel suits your home.
Is there a federal tax credit for a heat pump in 2026?
No. The 25C credit covered qualifying property placed in service through 31 December 2025.
Does Atmos Energy offer a furnace rebate?
Its Mid-Tex program, 1 July 2026 to 30 June 2027, pays $300 for an ENERGY STAR furnace at 90% AFUE or higher and $350 at 95% or higher. Verify on the Atmos site.
Do I need gas service for dual fuel?
Yes. Dual fuel uses a gas furnace as the backup heat. Without gas, the choice is a heat pump with electric backup.
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