Step 1Design & Permit
- Manual J load calculation
- Existing duct & venting assessment
- Equipment match + rebate eligibility
- Title 24 permit pulled
- Side-by-side gas vs heat pump quote
Turn-Key Furnace Replacement
Manual J · Permitted · Commissioned · Warranty Registered
FurnaceReplacementDone The Right Way
Properly sized, properly vented, properly commissioned. Permit-ready furnace replacement by licensed techs — with side-by-side gas-vs-heat-pump quotes so the math is yours.
10 Years
Inland Empire
EPA 608
Universal Certified
Same-Day
Emergency Dispatch
Both Counties
Riverside & SB
Inland Empire Furnace Replacement
Honest Furnace Replacement Pricing & Sizing
When a furnace is 15+ years old, has a cracked heat exchanger, or the repair quote is climbing past 40% of replacement cost, replacement is the right call. Tech On Call replaces residential gas furnaces, heat pumps, and dual-fuel systems across Riverside and San Bernardino County the way the manufacturer specifies: Manual J load calculation (never "the old one was 80,000 BTU, so we'll match it"), code-compliant venting, sealed combustion where required, and full commissioning with measured temperature rise and gas pressure.
Furnace replacement cost in the Inland Empire typically runs $4,500–$8,500 installed for a residential gas furnace, depending on AFUE rating, BTU output, brand, and venting work. An 80% AFUE single-stage replacement is the entry-level option for milder Inland Empire winters. A 95%+ AFUE condensing furnace adds ~$1,000–$1,500 but pays back through gas savings — especially in High Desert homes (Hesperia, Victorville, Apple Valley) that run the furnace many hours. Variable-speed and modulating systems run highest but provide the most comfortable, even heat.
Every replacement quote includes a side-by-side heat pump alternative so you can compare. Heat pumps are eligible for the federal IRA Section 25C tax credit (up to $2,000 on qualifying units) plus California utility rebates — and operating cost is often lower than gas when sized right. Permits, HERS testing where required, manufacturer warranty registration, and a smart thermostat are included in every install. Pair the new system with our annual maintenance plan to keep the warranty alive.
Licensed & Insured
Same-Day Service
Flat-Rate Pricing
Both IE Counties
Why The Install Matters
The Install Is The Furnace's Life
Diagnose · Repair · Restore
01
Wrong Size = Short Life
Oversized furnace short-cycles, overheats, and dies early. We Manual J every install — never match the old nameplate.
02
Bad Combustion = CO Risk
Improper gas pressure or undersized venting causes incomplete combustion. We test combustion and CO at commissioning.
03
Wrong Venting = Code Failure
95% AFUE furnaces need PVC sidewall venting; 80% need lined chimney. Wrong venting fails inspection and risks CO.
04
No Commissioning = No Warranty
Manufacturers void warranty if startup isn't documented. We commission every install and register the warranty.
05
No Permit = Resale Headache
California enforces Title 24. Skipped permits show up at resale or insurance time. We pull every permit — included in the price.
06
Wrong Duct Sizing
A new high-efficiency furnace on undersized ducts overheats and short-cycles. We measure static pressure first.
07
Mismatched Coil & Blower
Replacing the furnace without a matched AC coil ruins both efficiency and warranty. We size the full system.
08
Skipping The Heat Pump Quote
Most contractors won't quote you the heat pump option because it's harder to install. We quote both so the math is yours.
Installation Process
How A Real Replacement Runs
Step 1
Step 2Install & Commission
- Old furnace recovered & hauled
- New venting to code
- Gas pressure & combustion verified
- Smart thermostat installed
- Startup commission & warranty registration
Every Brand
Installs On Every Major Brand
Pick the brand you trust, or let us recommend the best fit for your load, electrical capacity, venting, and budget.
CarrierTraneLennoxGoodmanRheemYorkBryantAmerican StandardAmanaMitsubishi ElectricDaikinFujitsuColemanPayneHeilRuudMaytagDay & NightWilliams
What We Install
Every System We Install
01
80% AFUE Gas Furnaces
Single-stage atmospheric-vent furnaces — the entry-level Inland Empire replacement. Lined chimney venting.
02
95%+ AFUE Condensing
Sealed-combustion PVC-vented condensing furnaces — better efficiency, faster payback in High Desert homes.
03
Two-Stage & Modulating
Variable-output burners for more even, comfortable heat and quieter operation. Best comfort upgrade.
04
Heat Pumps
All-electric replacement option with IRA tax credit eligibility. Cools in summer, heats in winter.
05
Dual-Fuel Systems
Heat pump primary + gas furnace backup for the coldest nights. Best of both worlds for High Desert.
06
Package Unit Replacement
Rooftop package unit swaps — gas-pack or heat-pump package units with new curb adapter as needed.
Replacement Process
How A Right Replacement Works
- 01
In-Home Design & Load Calc
We measure the home, run a Manual J load calculation, evaluate the existing ductwork and venting, and check electrical capacity. The BTU on the quote is what your house actually needs — not a guess from the old nameplate.
- 02
Side-By-Side Quote
Good/better/best plus a heat pump alternative. We identify rebate eligibility (SCE, SoCalGas, federal IRA), and present financing options. No high-pressure pitch.
- 03
Permit & Inspection Prep
We pull the California Title 24 permit and prep for any required inspection. The closed permit becomes part of your home's record.
- 04
Old Equipment Removal
We disconnect the gas line safely, recover and haul the old furnace, and prep the platform. Pad cleaned, ductwork sealed, venting prepared for the new system.
- 05
New Furnace Install + Venting
Furnace set, gas line connected with new shut-off and sediment trap, condensate drain plumbed (95%+), venting to code, and electrical to spec. Sealed cabinet, no leaks.
- 06
Combustion Test & Commissioning
Gas pressure verified, temperature rise measured against nameplate, CO tested at supply, smart thermostat installed and programmed. Warranty registered with manufacturer.
Permit-Ready Furnace Replacement
Inland Empire · Furnace Replacement
Sized Right. Built To Last.
01
EPA 608 Certified
Universal-certified techs on every repair, install, and recovery — R-410A, R-32, R-454B handled correctly.
02
Same-Day Response
When the AC quits in the Inland Empire heat, you don't have hours. Same-day dispatch across both counties.
03
Flat Pricing
Diagnostic and repair quoted before any work begins. The number on-site is the number on the invoice.
04
Maintenance Plans
Spring tune-ups, filter swaps, and priority dispatch on annual plans built for desert summers.
View PlansRelated Services
Keep Exploring Tech On Call
01
Furnace Installation
New furnace install for additions, ADUs, or upgrades — full Manual J design.
Open
02Heat Pump Installation
All-electric replacement option with IRA tax credits and California rebates.
Open
03Furnace Repair
Not ready to replace? Same-day diagnostic and repair on every brand.
Open
04Furnace Maintenance
Protect the new install with an annual fall tune-up plan.
Open
Service Areas
Serving All of Riverside & San Bernardino County
Service Area
Riverside County
27
Cities
Don't see your city? Call (909) 239-6364 — we likely cover your area.
Replacement FAQ
Furnace Replacement Questions
01
How much does it cost to replace a furnace?
Residential gas furnace replacements run $4,500–$8,500 installed depending on AFUE rating, BTU, and venting work. 80% AFUE single-stage at the low end, 95%+ modulating at the high end. Heat pump alternatives run higher but qualify for tax credits and rebates.
02
How much does a 95% AFUE furnace cost vs 80%?
A 95%+ AFUE condensing furnace usually adds $1,000–$1,500 to the install vs 80% AFUE. The condensing furnace pays back through lower gas bills — fastest in High Desert homes that run the furnace more hours per year.
03
How long does a furnace replacement take?
Most residential gas furnace replacements are completed in one day. Heat pump conversions and dual-fuel installs run 1–2 days when new venting or electrical work is required.
04
Do you pull permits?
Yes. California Title 24 requires a permit for furnace replacement. Permits and any required inspections are included in the quote.
05
How is furnace size calculated?
We run a Manual J load calculation that accounts for square footage, insulation, window orientation, ceiling height, and local climate. Oversized furnaces short-cycle and overheat. Right-sized is the most important number on the quote.
06
Should I replace with a heat pump?
Worth quoting. Heat pumps qualify for the IRA Section 25C tax credit (up to $2,000) plus California utility rebates, and operating cost is often lower than gas. We quote both side-by-side. See heat pump installation.
07
Are there rebates available?
Yes — SoCalGas offers rebates on qualifying high-efficiency gas furnaces. SCE and federal IRA offer credits on heat pumps. We provide all paperwork and walk through eligibility.
08
Is a smart thermostat included?
Yes — every full-system install includes a smart thermostat. Larger systems can add zoning controls.
09
What cities do you serve for heating repair?
Every city in Riverside and San Bernardino County — Riverside, San Bernardino, Fontana, Rancho Cucamonga, Ontario, Corona, Moreno Valley, Temecula, Murrieta, Redlands, Hesperia, Victorville, and the Coachella Valley. Cold-snap nights in Hesperia, Victorville, and Yucaipa drive the most no-heat calls — we triage those first.
10
Do you warranty heating work?
Every repair carries a workmanship warranty. New furnace and heat pump installs are registered with the manufacturer — most ship a 10-year parts warranty when registered within 60 days, and we handle that paperwork for you.
11
Do you offer financing on furnace replacement?
Yes — financing is available on qualifying furnace and heat pump installs. We'll walk through monthly payment options and California rebate eligibility (SoCalGas, SCE, federal IRA tax credits) before you commit.