# Should a Sacramento home get a ducted or a ductless heat pump?

> Ducted vs ductless heat pump for Sacramento homes: how each delivers air, what SMUD project data shows on cost, and when your existing ducts decide it.

URL: https://tulesacramentoheatpump.com/guide/ducted-vs-ductless-heat-pump/

Decision Guide

How the two systems get heat into each room, what the existing ducts decide, what SMUD's rebate-program data shows about cost, and where a ductless system is the better fit.

For most Sacramento houses that already have central air, a ducted heat pump is the more natural fit. It reuses the duct system, puts one indoor unit and one outdoor unit where the old furnace and condenser were, and keeps the whole house on one filter and one thermostat. Ductless mini splits suit rooms the ducts never reached. The test is whether your ducts can carry heat pump airflow.

[Tule Sacramento Heat Pump](https://tulesacramentoheatpump.com/) plans and installs ducted heat pumps across the Sacramento region, with the work carried out by licensed and insured contractors. Ductless mini splits are a separate trade and are not offered through this site, so this guide compares them plainly without selling either one.

Key takeaways

- About 89% of SMUD households had central air conditioning in the CEC's 2019 survey, so most houses here already have ducts
- A ducted heat pump moves air through those ducts from one air handler; a ductless system puts a fan-coil head in each room it serves
- Any ducted change-out triggers Title 24 duct sealing and an ECC-Rater test
- SMUD's published medians put ductless gas-to-electric projects near $15,000 and ducted splits near $18,800, but the scopes differ
- Ductless suits additions, converted garages and houses that never had ducts; it is not installed through this site

## Two ways to deliver the same heat

Both systems are heat pumps. The outdoor unit, compressor, reversing valve and refrigerant loop work the same way. The difference is what happens indoors.

### Ducted

A single air handler, or a coil on a furnace cabinet, sits in the attic, garage or a hall closet. Its blower pushes air across the indoor coil and out through supply ducts to registers in every room, then pulls it back through one or more return grilles. One thermostat runs the system, and one filter at the return cleans all the air the house circulates.

### Ductless

Each conditioned room gets its own indoor head, usually high on a wall, with a small fan and coil inside. A refrigerant line set, a condensate line and a control cable run from each head to the outdoor unit. There are no ducts, so nothing is lost through an attic, but each head controls only the room it hangs in.

## The two side by side

|  | Ducted heat pump | Ductless mini split |
| --- | --- | --- |
| Indoor equipment | One air handler or furnace coil, out of sight | A head in each room, visible on the wall or ceiling |
| How air reaches rooms | Supply and return ducts | Directly from the head into the room |
| Filtration | One central filter, which can be upgraded | A washable screen in each head |
| Control | Usually one zone and one thermostat | Each head runs as its own zone |
| Energy lost on the way | Duct leakage and heat gain in a hot attic | No duct losses |
| Title 24 on a change-out | Duct sealing plus ECC-Rater testing | No duct test where no ducts are connected |
| Condensate | One drain at the air handler | A drain line from every head |
| Best fit | Houses with ducts that test well or can be sealed | Rooms or houses without ducts |

## What the local housing stock points to

Most Sacramento homes already have the ducts. In the California Energy Commission’s 2019 residential appliance survey, about 89% of SMUD households had central air conditioning and 79% had a furnace fan, which means a forced-air duct system. In PG&E’s territory the figures were 51% and 65%. Single-family homes in SMUD’s forecasting zone ran higher still, at 93% with central air.

City of Sacramento permit records show what happens at change-out time. Of 1,950 heat pump HVAC permits issued from October 26, 2025 to October 25, 2026, 1,167 carried the standard “No Duct Work Permitted” condition and 176 were written as change-outs with new ducts. The common case is a heat pump on the existing ducts.

### Where ducts may be missing or marginal

Some neighborhoods have far older housing. In ZIP 95818 around Land Park and Curtis Park, about 66% of housing units were built before 1950, and in 95819 in East Sacramento about 78% predate 1960. A pre-war house may have original ducts sized for a gravity furnace, a later system with ducts added in a tight attic, or rooms an addition left unserved. The [older homes page](https://tulesacramentoheatpump.com/heat-pump-older-homes/) covers those cases.

## When the existing ducts decide it

A heat pump’s supply air is milder than a furnace’s, so it needs to move more air to deliver the same heat. Title 24 refrigerant charge verification assumes at least 300 cfm for each ton of capacity. Ducts that were fine behind a furnace can fall short.

### What the duct test checks

On a change-out, the installer seals the connected ducts and an ECC-Rater tests them. The California Energy Commission’s target is total leakage at or under 10%, or leakage to the outside at or under 7%. Ducts that cannot reach it pass once every accessible leak is sealed and confirmed visually and with smoke. The [permit and Title 24 guide](https://tulesacramentoheatpump.com/guide/heat-pump-permit-title-24/) explains the whole sequence.

### When the ducts fall short

- **Small returns.** A return grille sized for an old furnace can choke a heat pump. Enlarging it or adding a second return is often the fix.
- **Crushed or kinked flex.** Runs pinched over joists starve the rooms at the end. Re-hanging or replacing those runs restores flow.
- **Ducts past saving.** New runs adding up to more than 25 feet need R-8 insulation and their own leakage test, and an all-new system has to test at 5% or less.

[Heat pump ductwork](https://tulesacramentoheatpump.com/heat-pump-ductwork/) covers the repair and replacement options, and the [sizing guide](https://tulesacramentoheatpump.com/guide/heat-pump-sizing/) explains how airflow and capacity are matched.

> Ductless is not offered here
>
> This site installs ducted heat pumps only. If a ductless system is the right answer for part or all of your house, a contractor who specializes in mini splits is the one to design it.

## What the cost data shows

SMUD publishes median installed costs from its heat pump rebate program, refreshed every quarter. Its gas-to-electric medians, before rebates, break down like this:

| System type (SMUD program category) | Median installed cost |
| --- | --- |
| Split system (ducted) | About $18,800 |
| Package unit (ducted) | About $19,550 |
| Ducted mini split | About $21,400 |
| Ductless mini split | About $15,000 |

The ductless figure looks lower, but the jobs behind it vary from a single room to a whole house, while a ducted conversion conditions every room and carries the duct sealing and testing. A fair comparison prices the same rooms to the same comfort standard. The [Sacramento cost guide](https://tulesacramentoheatpump.com/guide/heat-pump-installation-cost-sacramento/) breaks a ducted price into its parts.

## Where a ductless system fits better

Ductless makes sense where there is nothing to connect to, or where adding ducts would cost more than heads would:

- an addition or converted garage the original ducts never reached
- a house with no attic or crawlspace room for ducts
- a single room that runs hot or cold while the rest of the house is fine
- a house that heats with wall or baseboard electric heaters and has no forced-air system at all

A house with sound ducts and a central system to replace rarely benefits from tearing them out.

## Comfort, air and sound

A ducted system mixes air through the whole house, so temperatures even out between rooms when the ducts are balanced, and one central filter handles smoke and dust. That filter is a real advantage during wildfire season, as the [wildfire smoke guide](https://tulesacramentoheatpump.com/guide/heat-pump-wildfire-smoke/) explains.

Ductless heads give each room its own setting and avoid attic duct losses, but the fan runs inside the room, and each head needs regular cleaning. With a ducted system, the blower sits away from living spaces, and the outdoor unit is the main source of sound in either design.

Find out whether your ducts can carry a heat pump

A duct test and an airflow check answer the question before any equipment is chosen.

## Making the call for your house

If the house has central air today, start by testing the ducts. The [home readiness check](https://tulesacramentoheatpump.com/tools/heat-pump-assessment/) flags likely duct and panel issues, and [replacing an AC with a heat pump](https://tulesacramentoheatpump.com/replace-ac-with-heat-pump/) or a full [furnace-to-heat-pump conversion](https://tulesacramentoheatpump.com/gas-furnace-to-heat-pump-conversion/) keeps the ducts working. To have the ducts measured and a ducted system planned, call (916) 516-1454 or [request an estimate](https://tulesacramentoheatpump.com/contact/).

## Questions about this guide

### Can a mini split connect to the ducts a house already has?

Some mini-split product lines include a compact ducted air handler, and SMUD tracks those jobs as ducted mini-split projects. Many are built for short, unrestrictive duct runs rather than a whole-house system, so the rated external static pressure has to be compared with a measurement of your ducts. A full-size heat pump air handler is designed for the duct systems most Sacramento houses have.

### Is a ductless system cheaper than a ducted one in Sacramento?

SMUD's published medians for gas-to-electric projects put ductless mini splits near $15,000 and ducted split systems near $18,800 before rebates. The two are not like-for-like: a ductless median includes jobs that condition one or two rooms, while a ducted job covers the whole house through ducts that must pass Title 24 testing. Compare quotes for the same rooms and the same comfort goal.

### What happens to the old ducts if a house goes ductless?

They are either removed or left in the attic disconnected. Left in place, they carry no air, but the openings where they met the old furnace or air handler have to be sealed so attic air does not leak into the house. Going ductless also gives up the single central filter, so each indoor head's own filter screens become the cleaning points instead.

Want this answered for your house?

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

## Related service

Heat pump ductwork

Duct testing, sealing, resizing or full replacement so a heat pump gets the airflow it needs and passes the Title 24 test.

## More guides

- Learn [How is a heat pump sized for a Sacramento home?](https://tulesacramentoheatpump.com/guide/heat-pump-sizing/)How a load calculation turns your house, your town's design temperatures and your ducts into a capacity, why the old condenser's tonnage is a poor guide, and what Title 24 and the City permit allow.
- Learn [What does a heat pump permit in Sacramento involve, and what does Title 24 check?](https://tulesacramentoheatpump.com/guide/heat-pump-permit-title-24/)The permit office for each part of the region, what the City of Sacramento's standard change-out permit allows, every Title 24 test a change-out carries, and how SB 222 reshapes permits from 2027.
- Cost Guide [How much does heat pump installation cost in Sacramento?](https://tulesacramentoheatpump.com/guide/heat-pump-installation-cost-sacramento/)Typical Sacramento-area ranges for ducted heat pump jobs, the public figures inside a price, permit fees by jurisdiction, the parts only a site visit can price, and which incentives are still open.
- 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.
- Learn [Can a ducted heat pump help keep wildfire smoke out of a Sacramento home?](https://tulesacramentoheatpump.com/guide/heat-pump-wildfire-smoke/)Why a heat pump recirculates rather than ventilates, how filter rating and filter size trade off against the airflow a heat pump needs, which settings help on smoke days, and what an air handler replacement can fix.