# Is a heat pump or a gas furnace better for a Sacramento home?

> Heat pump vs gas furnace in Sacramento: heating cost by electric utility, winter capacity at 31°F, comfort, safety, outages, rebates and when dual fuel fits.

URL: https://tulesacramentoheatpump.com/guide/heat-pump-vs-gas-furnace-sacramento/

Decision Guide

How the two compare on Sacramento's winter mornings, what each costs to run under SMUD, Roseville Electric and PG&E rates, how they differ in comfort, safety and upkeep, and which households should keep gas for now.

On SMUD power, a heat pump usually heats a Sacramento home for less than a gas furnace and replaces the air conditioner at the same time. On PG&E electricity the running-cost race is close, and the case rests more on cooling, comfort and removing combustion. Roseville Electric falls between the two.

[Tule Sacramento Heat Pump](https://tulesacramentoheatpump.com/) replaces gas furnaces with ducted heat pumps, or pairs the two in dual fuel systems, across the Sacramento region; licensed and insured contractors do the installation. This guide compares the two heating methods on the factors that decide the choice locally, using published rates and climate data rather than national averages.

Key takeaways

- Break-even heat pump COP against a 95% furnace: about 1.4 to 2.0 on SMUD, 1.7 to 2.2 on Roseville Electric, 3.1 to 3.5 on PG&E's E-ELEC (derived from published rates)
- Sacramento's 0.2% winter design is 31°F; sub-20°F nights are essentially absent on the valley floor
- A furnace only heats; a heat pump also cools, so the comparison includes the AC
- No local rule requires a working gas furnace to be replaced
- Dual fuel keeps a newer furnace as backup while the heat pump does most of the work

## Side by side

| Factor | Ducted heat pump | Gas furnace (with central AC) |
| --- | --- | --- |
| How it heats | Moves outdoor heat indoors with a refrigerant loop | Burns natural gas in a heat exchanger |
| Cooling | Same unit cools in summer | Needs a separate air conditioner |
| Fuel and bill | Electricity from SMUD, Roseville Electric or PG&E | PG&E gas, plus electricity for the blower and the AC |
| Supply air in winter | Milder air over longer cycles | Hotter air in shorter bursts |
| Combustion | None: no burner, flue or carbon monoxide source | Burner, flue and heat exchanger to keep safe |
| Winter extras | Defrost cycles on damp, near-freezing mornings; optional backup strips | None |
| SMUD rebate | $2,000 or $3,000 on qualifying gas-to-electric systems | None |
| Permit and Title 24 | Permit, duct sealing, charge and airflow verification | Permit and duct sealing when the furnace is replaced |

## What each costs to run

The cost of heat comes down to two prices and two efficiencies: PG&E’s gas rate against a furnace’s AFUE, and your electric rate against the heat pump’s COP (heat delivered per unit of electricity).

### The break-even COP

Working from PG&E’s residential baseline gas rate of about $2.54 per therm and each utility’s winter energy charges (fixed charges left out), a heat pump beats a 95% furnace once its average COP clears these derived figures:

| Electric rate, winter | Break-even COP vs 95% furnace | vs 80% furnace |
| --- | --- | --- |
| SMUD Time-of-Day, off-peak | 1.41 | 1.19 |
| SMUD Time-of-Day, 5 to 8 p.m. peak | 1.95 | 1.64 |
| Roseville Electric, Tier 1 to Tier 2 | 1.70 to 2.18 | 1.43 to 1.84 |
| PG&E E-ELEC, off-peak to peak | 3.13 to 3.52 | 2.63 to 2.96 |
| PG&E E-TOU-C (default), off-peak | 4.04 | 3.40 |

### Reading the table

Any heat pump that averages a COP above 2 through the winter clears every SMUD figure, so SMUD customers start well ahead. On PG&E’s E-ELEC rate the heat pump has to run efficiently all season to match a condensing furnace, and on the default E-TOU-C plan the bar sits above 4. That is why the rate plan matters as much as the equipment in PG&E areas such as West Sacramento, Davis and Rocklin.

Gas comes from PG&E everywhere in the region, so the gas side of the comparison is the same at every address. Its procurement charge changes monthly, which moves the break-even point a little either way. The [electric bill guide](https://tulesacramentoheatpump.com/guide/heat-pump-electric-bill-sacramento/) turns these ratios into dollars per therm of heat.

### How much heating is at stake

In the Energy Commission’s 2019 survey, homes with PG&E gas and SMUD electricity averaged 2.9 therms of gas a day during the coldest February week, against 2.6 for homes on PG&E for both. NOAA’s normals give Sacramento Executive Airport about 2,436 heating degree days a year, so winter is long even if it is mild.

## Will a heat pump keep up in winter?

On the valley floor, yes. The California Energy Commission’s design data puts Sacramento’s airport station at 31°F for the 0.2% heating condition and 33°F at 0.6%, and NOAA’s normals count about 15 nights a year at or below freezing and essentially none at 20°F or colder.

### Why the summer load decides

The same station’s 1% cooling design is 98°F. A heat pump sized for that afternoon load usually carries enough heating capacity for a 31°F morning, which is why a cold-climate model is not needed for capacity here. The foothills are different: Placerville records about 30 freezing nights a year.

### Fog and defrost

The local winter quirk is humidity. At the airport, NOAA’s normal January 7 a.m. temperature is 41.6°F and the month’s mean dew point is 41.3°F, so frost forms on the outdoor coil and the unit runs short defrost cycles. That is normal operation. Backup electric strips can cover those minutes; the [aux heat and defrost guide](https://tulesacramentoheatpump.com/guide/heat-pump-aux-heat-defrost/) explains how they should be set so they don’t run more than needed.

See how the numbers work for your utility

A conversion plan starts with your electric provider, the furnace's age and the ducts; the choice of system follows.

## Comfort, safety and upkeep

### How the heat feels

A furnace delivers air well above 100°F in short bursts, then shuts off. A heat pump sends milder air for longer stretches, and two-stage or variable-speed models run at low output for much of the day. The house reaches the same temperature, but the air at the register feels cooler on your hand, which some people notice in the first winter.

### Combustion and safety

A heat pump has no burner, flue or heat exchanger, so there is no combustion appliance to check for carbon monoxide. When a furnace is removed, its gas branch is capped and the flue opening closed. City of Sacramento change-out permits also call for working carbon monoxide and smoke alarms at inspection.

### Maintenance and run hours

A furnace and AC split the year; a heat pump’s outdoor unit works in both seasons, so filters, coil clearance and condensate drainage matter year-round. No heat pump or furnace comes with a guaranteed service life. [Heat pump maintenance](https://tulesacramentoheatpump.com/heat-pump-maintenance/) covers the yearly check.

## Rules, rebates and timing

No rule in the City of Sacramento requires a working gas furnace to be replaced; its electrification strategy sets a 2045 goal for existing buildings without mandatory appliance replacement, and the state’s Title 24 heat pump baseline applies to new construction. State law (SB 222) does void HOA rules that would block a gas-to-electric replacement. The [California gas furnace rules guide](https://tulesacramentoheatpump.com/guide/california-gas-furnace-ban/) tracks what is adopted and what is proposed.

SMUD pays $3,000 for a qualifying variable-stage heat pump replacing gas heat and $2,000 for two-stage; Roseville Electric and PG&E list no rebate. The [conversion cost guide](https://tulesacramentoheatpump.com/guide/gas-furnace-to-heat-pump-conversion-cost/) shows the installed price before and after.

## The middle path: dual fuel

A dual fuel system keeps the gas furnace and adds a heat pump in place of the air conditioner. The heat pump cools and handles most of the heating; below a set outdoor temperature, or when electricity is expensive, the furnace takes over.

It fits when the furnace is young, when winter electricity costs more than gas per unit of heat, as on some PG&E plans, or when a house has a large heating load. SMUD does not state whether dual fuel qualifies for its rebate, so that is confirmed first. See [dual fuel heat pumps](https://tulesacramentoheatpump.com/dual-fuel-heat-pump/).

### What about geothermal?

Ground-source heat pumps draw heat from buried loops rather than the outdoor air. They are a different trade with drilling or trenching and are not offered through this site; on the valley floor, where winter design temperatures sit above 30°F, an air-source heat pump already works in its comfortable range.

## Which fits your house

- **Furnace near the end of its life, SMUD power.** A full [conversion to a heat pump](https://tulesacramentoheatpump.com/gas-furnace-to-heat-pump-conversion/) is the usual choice.
- **Furnace near the end of its life, PG&E power.** A heat pump on the E-ELEC rate, or dual fuel if the numbers favor gas in winter.
- **Newer furnace, failed AC.** [Replace the AC with a heat pump](https://tulesacramentoheatpump.com/replace-ac-with-heat-pump/) and keep the furnace as backup.
- **Ducts or panel in doubt.** Test them first; the [heat pump ductwork page](https://tulesacramentoheatpump.com/heat-pump-ductwork/) explains what the result means.

To weigh the options for your own house, call (916) 516-1454 or [request an estimate](https://tulesacramentoheatpump.com/contact/).

## Questions about this guide

### Does a heat pump keep a Sacramento house as warm as a gas furnace at 30 degrees?

Yes, when it is sized from a load calculation. The Energy Commission's 0.2% heating design for Sacramento's airport station is 31°F, and NOAA's normals show essentially no nights at 20°F or below there. A heat pump sized for the summer cooling load usually has the heating capacity for those mornings; the difference is milder air at the register for longer, not less heat.

### Is a gas furnace better to have during a power outage?

Not by itself. A modern gas furnace needs electricity for its blower, igniter and controls, so it stops in an outage just as a heat pump does. Neither runs without power unless the house has a generator or battery sized and wired for it, and a heat pump's larger draw makes that backup bigger.

### Should I replace a furnace that is only a few years old with a heat pump?

Usually not all at once. If the furnace has years of life left, a dual fuel setup lets a heat pump replace the air conditioner and handle most of the heating while the furnace covers the coldest hours. The full conversion can follow when the furnace wears out, especially if you are on SMUD power.

Want this answered for your house?

Call with your current system, the rooms that bother you and your ZIP code.

## Related service

Furnace to heat pump conversion

One ducted heat pump in place of the gas furnace and the central AC, sized from a load calculation and tested to Title 24.

## More guides

- Learn [How much will a heat pump add to your electric bill in Sacramento?](https://tulesacramentoheatpump.com/guide/heat-pump-electric-bill-sacramento/)How heating moves from the gas bill to the electric bill, what a therm of heat costs under each local rate plan, how summer peaks and fixed charges work, and the settings that keep a heat pump's bill from creeping up.
- Cost Guide [How much does it cost to convert a gas furnace to a heat pump in Sacramento?](https://tulesacramentoheatpump.com/guide/gas-furnace-to-heat-pump-conversion-cost/)What a furnace-and-AC to heat pump conversion typically costs around Sacramento, which parts of the job carry a public figure, what the gas side adds, and how SMUD's gas-to-electric rebate changes the net.
- Learn [What is heat pump aux heat, and when should it run in Sacramento?](https://tulesacramentoheatpump.com/guide/heat-pump-aux-heat-defrost/)How backup heat strips, defrost cycles and thermostat controls work together, why the valley floor rarely needs strips for capacity, what they cost to run on each utility's rates, and when a furnace makes the better backup.
- Learn [Is California banning gas furnaces in existing Sacramento homes?](https://tulesacramentoheatpump.com/guide/california-gas-furnace-ban/)Which rules exist, which apply only to new construction, what the City of Sacramento has and has not adopted, how SB 222 treats HOAs, and why timing is usually set by the furnace and the electric rate rather than a deadline.
- Decision Guide [Should you replace a central air conditioner with a heat pump or another AC?](https://tulesacramentoheatpump.com/guide/heat-pump-vs-air-conditioner/)A heat pump is an air conditioner that can also heat. Here is what that one difference changes in the Sacramento area: price, rebates, winter bills, Title 24 testing, the furnace you already have and how long the outdoor unit works each year.