Heat Pump vs. Furnace: Which Is Better for a San Antonio Home?

How each one heats your home

• Gas furnace: burns natural gas (or propane) and blows the heat through your ducts. It pairs with a separate AC for cooling.
• Heat pump: an outdoor unit that looks like an AC. In summer it cools. In winter it runs in reverse and moves heat from the outside air into the house, using electricity. On the coldest mornings it can turn on electric backup heat strips.

Both use the same ducts and the same thermostat, so either can usually replace the other.

What San Antonio winters mean for the choice

Heat pumps work best when it is mild outside, and they slow down in hard freezes. San Antonio has long cooling seasons and short, mild winters with only a few very cold days, which is why heat pumps are common here. A gas furnace makes hotter air and does not care how cold it is outside, so it can feel more comfortable on the few freezing mornings.

If you have both a heat pump and gas, a dual fuel (hybrid) system uses the heat pump most of the time and switches to the furnace when it gets very cold. Read hybrid heating.

Side by side

• Feel of the air: furnace air is hotter. Heat pump air feels milder, though the house reaches the same temperature. See the 20-degree rule for heat pumps.
• Fuel: furnace uses gas plus a little electricity for the fan. Heat pump uses only electricity.
• Cooling: a heat pump also cools, so it replaces your AC too. A furnace needs a separate AC.
• Safety: a gas furnace needs working carbon monoxide alarms and regular gas safety checks. A heat pump burns no fuel.
• Cold snaps: a heat pump leans on backup heat strips in hard freezes, which raises the electric bill on those days. See EM heat vs. heat.
• Lifespan: both last many years with maintenance. See how long a furnace lasts.

Cost to buy and run

The price of either depends on the size of your home, the efficiency level and how much of your ductwork and electrical needs work. Running cost depends on your gas and electric rates. CPS Energy offers rebates on qualifying high-efficiency heat pumps and air conditioners. See AC and heat pump replacement cost in San Antonio and financing.

How to decide

• No gas line at the house: a heat pump is usually the simple choice.
• AC and furnace both old: a heat pump replaces both with one outdoor unit, or go dual fuel.
• Furnace fine, AC dying: you may only need a new AC, or a heat pump paired with the furnace you have.
• You hate cool-feeling air in winter: a furnace or dual fuel may suit you better.

A load calculation and a look at your ducts, gas line and electrical panel will settle it. Cowboys Air Conditioning & Heating has installed both in San Antonio since 2007, and you get the price in writing first. See AC and heat pump installation, heat pump repair or furnace repair.

Frequently asked questions

Is a heat pump or furnace better in San Antonio?

For many San Antonio homes a heat pump works well, because winters are short and mild and a heat pump also cools. A gas furnace makes hotter air on the few freezing days. Dual fuel uses both.

Does a heat pump work when it is freezing in San Antonio?

Yes. It slows down in hard freezes and may turn on electric backup heat strips, which raises the bill on those days, but it keeps heating.

Can I replace my furnace with a heat pump?

Usually yes. A heat pump uses the same ducts and thermostat. A technician should check the system size, ductwork and electrical panel first.

What is a dual fuel system?

A dual fuel or hybrid system pairs a heat pump with a gas furnace. The heat pump handles most of the heating and cooling, and the furnace takes over when it gets very cold.

Is a heat pump safer than a gas furnace?

A heat pump burns no fuel, so there is no combustion or carbon monoxide from the heat pump itself. A gas furnace is safe with regular checks and working CO alarms.

Related service: heating repair in San Antonio · heat pump repair · AC and heat pump installation. Cowboy's AC answers 24/7 at (210) 495-7771.