Same-day weekday service · Sacramento & Fair Oaks
Furnace Replacement in Sacramento.
High-efficiency heat. No upsell.
Residential furnace replacement and gas furnace installation across Sacramento and Fair Oaks, typically $4,500 to $9,000+ installed. Free in-home estimate, city permit pulled, upfront pricing, no upsell.
4.9 stars across 270 Google reviews.Licensed & insured, CSL# 967727.10-year guarantee
Prefer to write it out? Send a message and book a free in-home estimate.
Start hereHow Long Does a Furnace Last in Sacramento? · 5 Cracked Heat Exchanger Symptoms in Your Furnace · Carrier Cracked Heat Exchanger: Secondary Exchanger Failures and the Enhanced Warranty
- Free Estimate
- $4,500 to $9,000+ Installed
- City Permits Pulled
- 10-Year Guarantee
New air handler, new plenum, branches re-run. Modern furnaces hit 97% AFUE, and that is real money on a Sacramento winter bill.
01Furnace replacement
Replace once.
Heat for a decade.
Alpha Mechanical replaces a Sacramento gas furnace in four steps: a free in-home estimate, a written price, the city permit with Title-24 compliance, and a one-day install for a like-for-like closet or garage swap, finished with a combustion analysis. Across Sacramento and Fair Oaks the job typically runs $4,500 to $9,000+ installed. Four things set where a job lands in that band, and we measure all four at the estimate: the size and efficiency tier (a right-sized 80% AFUE furnace sits near the bottom; a 90%+ condensing unit needs a new flue and condensate drain), the plenum and gas-line work the old system left behind, where the furnace lives (closet, garage or attic), and the city permit, Title-24 compliance and combustion analysis that every quote includes. The number goes in writing before anything is ordered, and the price quoted is the price billed. If the furnace is under ten years old and one part failed, we say so and book a repair instead. Alpha Mechanical is licensed in California (CSL# 967727) and holds 4.9 stars across 270 Google reviews.
Our furnace replacement service covers the whole job, not just the box: residential furnace replacement on single-family homes, HVAC furnace replacement where the condenser is being swapped in the same visit, and heating furnace replacement on older gravity and mid-efficiency systems that never had a proper flue. If the existing unit is under ten years old and the fault is a single part, we say so and book a heating repair instead.
If you’re here for a second opinion, our replacement guidelines walk through how to tell repair from replace. We won’t push equipment you don’t need. Also consider heat pump replacement if you’re weighing all-electric, or keep your current unit running with furnace cleaning and maintenance. For office, retail, or warehouse heating, see our commercial HVAC services.
02When to replace
Signs your furnace is done.
The signs you need a new furnace are an age past 15 years, odd noises, no warm air, short-cycling, a climbing gas bill, and persistent breakdowns. Replacement isn’t always the answer, but when these stack up, the math points one way. Our guide to how long a furnace lasts in Sacramento sets your furnace’s age against the Department of Energy’s lifetime estimates. Not sure? Call for an honest second opinion, especially if another company condemned the system on a cracked heat exchanger, which is the single most common reason a repair call turns into a replacement quote. Our walkthrough of cracked heat exchanger symptoms and the flame test shows what we look at before we agree with that call. If the furnace is a Trane, Goodman or Carrier, check what its heat exchanger warranty covers before you decide: our notes on Trane heat exchanger warranty terms, what Goodman’s lifetime heat exchanger warranty really covers and Carrier’s secondary heat exchanger failures list the evidence to ask for.
15+ years old
Past 15, the math usually tips. Combustion-side parts wear in ways field repairs can’t fully reverse.
Odd noises
Banging, screeching, or rumbling. Often delayed ignition, a failing inducer, or a cracked heat exchanger.
No warm air
Burner won’t light, or lights and shuts down. The system is trying, and failing.
Short-cycling
On, off, on, off. Hard on every component and a fast track to a no-heat morning.
Climbing gas bill
Same use, higher cost. AFUE is the share of the fuel a furnace turns into heat over a season: an 80% AFUE furnace turns 80 percent of the gas it burns into heat, and a condensing furnace rated up to 97% wastes far less.
Persistent breakdowns
Repair bills stacking quarter after quarter. At some point replacement is the cheaper math.
03What it costs
What furnace replacement costs in Sacramento
Most Sacramento furnace replacements land between $4,500 to $9,000+ installed, and the spread inside that band is not padding. It is four specific things about your house. We measure them at the free in-home estimate and put the number in writing before anything is ordered.
| Driver | Toward the low end | Toward the high end |
|---|---|---|
| Size and efficiency tier | A right-sized 80% AFUE furnace sits near the bottom of the band. | A condensing 90%+ unit costs more up front and needs a new flue and a condensate drain, which is labour as well as equipment. Bigger homes need more BTUs, and more BTUs cost more in every tier. |
| What the old system left behind | Plenums and returns that fit the new cabinet, and a gas line that only needs reconnecting. | Supply and return plenums rarely match a new cabinet, so most jobs include new transitions. Undersized returns, crushed flex and a gas line that was marginal for the old unit all add work that a quote written from the driveway will miss. |
| Where the furnace lives | A closet unit in a Curtis Park bungalow or a garage install in Rancho Cordova, where a like-for-like swap is a single working day. | An attic swap in a Carmichael ranch, which can push the job into a second day. Access drives labour hours more than any other single factor. |
| Permit, Title-24 and commissioning | No spread here. Every price we quote includes the city building permit, Title-24 heating compliance, combustion analysis at startup and the inspection that closes the job. A quote that leaves those out is not cheaper, it is incomplete. | |
If the furnace is still running and you are trying to decide whether a repair is the better spend, the diagnostic is a flat $89 and it is credited back when you hire us for the repair or the replacement. For the wider picture across a whole system, our HVAC system replacement cost guide breaks down what a furnace-and-condenser job runs together. Rebate eligibility depends on the utility that actually serves the meter and on the equipment you choose, so we check it against your address rather than quoting a number off a brochure.
04What’s included
Every install.
Every line item.
A furnace installation runs eight steps: the city permit and Title-24, removing the old furnace, gas line and electrical, combustion air and venting, plenums and ductwork, the thermostat, startup and combustion analysis, then safety devices and cleanup. No surprise add-ons at the end. The price quoted is the price billed, labor, materials, permit, Title-24, commissioning, cleanup.
- Step 01
City permit & Title-24
Building permit pulled, Title-24 heating compliance run, combustion safety verified.
- Step 02
Remove old furnace
Existing unit out and disposed, gas line shut and inspected.
- Step 03
Gas line & electrical
Upgraded gas connection at the furnace, correctly sized breakers, code-compliant wiring.
- Step 04
Combustion & venting
Combustion air supply verified, new flue and condensate drain on 90%+ AFUE units.
- Step 05
Plenums & ductwork
Existing supply/return plenums modified as needed, ducts reconnected cleanly to the new equipment.
- Step 06
Thermostat
New Wi-Fi or programmable digital thermostat of your choice, wired, configured, walked through.
- Step 07
Startup & combustion analysis
Gas pressure measured, combustion analyzed, system commissioned to manufacturer spec.
- Step 08
Safety devices & cleanup
Smoke and CO sensors installed if not present, jobsite cleaned, paperwork handed over.
What furnace installation day actually looks like
One day for most swaps. A like-for-like furnace replacement in an accessible closet or garage is a single working day. Attic installs, a change of efficiency tier that needs new venting, or plenum rework can push it into a second day, and we tell you which one you are before the date is booked, not on the morning.
The heat is off while we work. Gas is shut and the old unit comes out first, so plan for the house to be at outdoor temperature for most of the day. In a Sacramento December that matters, which is why we start early rather than after lunch.
The job is not done at cleanup. The permit closes with a city inspection after we leave, and we carry that through with you. You get the paperwork, the warranty registration and a walkthrough of the new thermostat before the truck goes.
No heat right now? The estimate is the scheduled half of this. The diagnostic is not: Alpha books same-day weekday visits across Sacramento and Fair Oaks whenever a slot is open, so a dead furnace does not have to wait for the replacement date. Before you book either, the checks in why a furnace won’t turn on rule out a tripped breaker, a loaded filter or a thermostat setting.
05What you get
New furnace,
measurable difference.
A high-efficiency furnace rated up to 97% AFUE turns more of every therm into heat, lowers winter bills, circulates less dust, runs quieter and burns cleaner, and it carries a manufacturer parts warranty plus our workmanship guarantee on the installation.
Up to 97% AFUE
Modern gas furnaces wring much more heat from every therm than the unit you’re replacing.
Lower winter bills
High-efficiency models and variable-speed blowers cut both gas and electric usage.
Cleaner air
New filter cabinet and tighter cabinet seals = less dust circulating through the home.
Quieter operation
Sealed combustion and variable-speed blowers run a fraction as loud as older single-stage units.
Cleaner combustion
Modern burners produce lower emissions and burn more completely than aging mid-efficiency units.
Worry-free warranty
Manufacturer parts warranty plus our workmanship guarantee on the installation itself.
06Light commercial
Commercial heating replacement, up to 25 tons
Alpha Mechanical handles commercial furnace replacement and rooftop heating swaps on systems up to 25 tons: office, retail, worship, warehouse and multi-family. A storefront that cannot hold temperature costs you customers, not comfort. We schedule the work around your operating hours rather than ours, and the permit and Title-24 paperwork is handled the same way it is on a house.
Design-build work, larger tonnage and full mechanical scopes live on our commercial HVAC page. Residential and light commercial is the whole of what we take on, and we would rather say that up front than quote a job we are not the right shop for.
Dispatch runs Monday to Friday. The phone is answered around the clock, and weekday no-heat calls get a same-day slot whenever one is open. We do not promise weekend service we cannot staff.
07Why Alpha Mechanical
Replace reasonably.
Not aggressively.
Alpha Mechanical won’t recommend a furnace replacement when a repair is the honest answer. Looking for a second opinion? The diagnostic is $89 flat and credited back if you hire us.
- 01Sacramento-based since 2011, 15+ years of local heating installs
- 02Licensed and insured, CSL# 967727
- 03Licensed mechanical engineer on staff for proper system design
- 04Gas furnace installers for residential and light-commercial systems, every major brand
- 05No-risk guarantee on every installation, city permit and Title-24 included in the price
- 06$89 flat diagnostic, credited back if you hire us
- 07We won’t recommend replacement when a repair is the right call
- 084.9 stars across 270 Google reviews
Complete Members get 5% off system upgrades
5% off a system upgrade, 20% off repairs while the old furnace is still running, and 2 tune-ups a year that keep the new one under warranty, at $19.99/month or $239 a year. The Essential Membership is $12.99/month, with 3% off a new system. Compare the membership plans.
Financing for a replacement you did not plan for
A furnace rarely fails on a convenient month. Financing spreads a replacement across payments instead of one invoice; terms and the application live on one page: Financing options.
08Where we replace
Your address changes the paperwork
A replacement is a scheduled job rather than a rescue, so what varies from one address to the next is paperwork and rebate eligibility, not how fast we can get there. We pull the permit with whichever jurisdiction covers the property, and eligibility is checked against the utility that actually serves the meter before a number goes on the estimate. That check is worth doing, because the service boundaries do not always follow the city lines people expect.
Each city page carries the furnace work we do in that area and the local detail that goes with it: Carmichael furnace repair, Citrus Heights, furnace service in Orangevale, Arden-Arcade, Rancho Cordova furnace repair, Gold River, North Highlands, furnace repair in Folsom and Roseville. Fair Oaks furnace service is the one we reach fastest, because the shop is on Fair Oaks Blvd. When a Folsom furnace is past repair, our Folsom furnace replacement page shows what our replacements there have included.
Verified reviews
What Our Customers Say
Real reviews from customers across Sacramento and the surrounding areas.
270 reviews · Google
Furnace and AC replacement · Google review
“They had been keeping my 21 year old furnace and AC going for as long as possible, but the day finally came. Complete replacement. It took about a week to get the unit we picked installed and we had two of the nicest tech's working on the install, whick took two days. There were zero issues … And probably the best part was that the install passed City inspection with no issues. Thanks Andrey and crew.”
Melissa Moore
Verified Google reviewGas furnace installation · Google review
“Andrey and his team did a great job in replacing my heating and cooling solution … He was also patient as we discussed efficiency levels, rebate options, and financing. We finally agreed on a split system with a conventional furnace and air conditioner … His team showed up on-time, communicated well, and performed a professional and clean installation that met construction permitting requirements.”
Curtis Cadwallader
Verified Google reviewRight-sized replacement · Google review
“Alpha Mechanical was extremely prompt and competitive with my new complete HVAC replacement. Very happy with the results and Andrey made sure I had the right unit for my house- not undersized and not oversized- just right … I would unconditionally recommend Alpha Mechanical for anyone contemplating a HVAC replacement.”
Thomas Nelson
Verified Google reviewResidential furnace replacement · Google review
“Alpha Mechanical did a great job replacing my residential HVAC system. They provided a complete/competitive bid, were easy to correspond with, completed the job in a timely manner, and provided support through the final duct testing and permit/inspection process with the city.”
David Ward
Verified Google review
FAQ
Frequently Asked Questions
Furnace installation in Sacramento varies by size, brand, and existing ductwork. Expect $4,500 to $9,000+, with high-efficiency models and larger sizes pushing toward the upper end. Alpha Mechanical can give you an accurate estimate for your new gas furnace. Heat pumps are priced separately on our heat pump replacement page.
Alpha Mechanical tells Sacramento homeowners to weigh replacement once a furnace passes 15 years, and sooner if repair bills keep stacking up, the burner will not stay lit, the system short-cycles, or the gas bill climbs with the same use. Age alone is not a verdict: if the unit is under ten years old and one part failed, we say so and book a repair. The $89 diagnostic is credited back if you hire us.
Yes. An aging furnace can leak gas or carbon monoxide, and a cracked heat exchanger is one way CO reaches the living space. If you smell gas, leave the house and call 911 or PG&E from outside. If a CO alarm sounds, get everyone out and call 911. A cracked heat exchanger is also the most common reason a repair call turns into a replacement quote, so get a second opinion first. Every Alpha Mechanical install adds smoke and CO sensors where the house has none.
Sacramento · Fair Oaks · Folsom · El Dorado Hills
Ready to swap the old furnace?
Let’s get a number.
Free in-home estimate, $4,500 to $9,000+ for most Sacramento replacements, and the number in writing before anything is ordered. We walk through current offers and financing before you sign anything.
4.9 stars across 270 Google reviews.CSL# 967727.Same-day weekday service
Or send a message and book a free in-home estimate
Also serving Fair Oaks · Folsom · El Dorado Hills · Carmichael · East Sacramento · Arden-Arcade · Rancho Cordova · Curtis Park · La Riviera · all areas
Reviewed and updated by Andrey Yev, PE, Alpha Mechanical
Guides in this topic
More on replacing a furnace
- How Long Does a Furnace Last in Sacramento?15 min read
- 5 Cracked Heat Exchanger Symptoms in Your Furnace10 min read
- Carrier Cracked Heat Exchanger: Secondary Exchanger Failures and the Enhanced Warranty7 min read
- Goodman Cracked Heat Exchanger: What the Lifetime Warranty Really Covers7 min read
- Trane Cracked Heat Exchanger: Symptoms, Warranty, and What to Ask7 min read