Furnace installation in Kearns is overwhelmingly replacement work. The community’s 1950s through 1970s housing stock means most furnace installations involve replacing aging atmospheric-vent equipment that’s reached or exceeded typical service life. Many Kearns customers have lived with the same original or first-replacement furnace for 20-plus years and are now facing the decisions involved in upgrading to modern equipment — what efficiency tier makes sense for their home and budget, whether to stick with gas heating or consider a heat pump, whether to add AC during the replacement project if they don’t already have central cooling, what venting changes will be needed, how the upgrade will affect water heater venting if both currently share a chimney, and what rebates and tax credits apply.
The technical scope of a typical Kearns furnace installation is broader than most customers initially expect. Replacing an 80% AFUE atmospheric-vent furnace with a 96% AFUE sealed-combustion condensing unit isn’t just swapping one box for another — it involves abandoning the chimney venting (which means the water heater also needs venting attention if it was sharing the chimney), installing new PVC venting through the wall, adding combustion air intake provisions, installing condensate drainage, and often modifying ductwork that was originally sized for the larger air volumes of older equipment. Done properly, the project produces a substantially safer, more efficient heating system that serves the home well for 15–20 years. Done improperly, customers end up with combustion problems, condensate issues, ductwork performance complaints, and water heater venting concerns months after the work is “complete.”
Below is what proper Kearns furnace installation involves, the common scenarios we encounter, equipment options across efficiency tiers, and how to think about decisions involved in the project.
Common Kearns Furnace Installation Scenarios
Atmospheric-Vent to Sealed-Combustion Conversion
The dominant Kearns installation scenario. 80% AFUE atmospheric-vent furnace replaced with 90–98% AFUE sealed-combustion condensing furnace. The project involves significantly more than equipment swap:
- Equipment removal — old furnace, possibly old AC coil, refrigerant recovery if AC coil is being replaced
- Chimney evaluation — chimney typically no longer used for furnace venting after sealed-combustion installation
- Water heater venting evaluation — if water heater was sharing the chimney, options include power-vented water heater replacement, dedicated water heater venting modification, or chimney liner installation. Without addressing water heater venting, the existing chimney becomes oversized for water heater alone and can produce condensation issues that damage the chimney.
- PVC venting installation — new vent piping through exterior wall to terminate outside
- Combustion air intake — provisions for outside combustion air per manufacturer specifications
- Condensate drainage — condensing furnaces produce condensate (1–2 gallons per day during heavy heating operation). Drainage to floor drain, condensate pump, or appropriate drain location
- Gas line verification — gas line capacity and pressure verified for new equipment input rating
- Ductwork evaluation — original ductwork often undersized for replacement equipment, requiring modifications
- Thermostat upgrade if existing is incompatible with new equipment staging
- Smart thermostat integration when included in project scope
Typical duration: 1–2 days on-site depending on complexity
Typical pricing:
- 80% AFUE replacement (less common today): $4,500–$7,500
- 96% AFUE single-stage condensing: $5,500–$8,500
- 96% AFUE two-stage: $7,000–$11,000
- 96–98% AFUE modulating condensing: $9,500–$14,000
Older High-Efficiency Equipment Replacement
Some Kearns homes have first-generation 90%+ AFUE condensing equipment from the 1990s or early 2000s that’s now reaching end of service life. These installations are simpler than atmospheric-vent conversions — PVC venting and sealed combustion are already in place, condensate drainage exists, water heater venting was already addressed during the original conversion.
Project considerations:
- Equipment dimensions may differ from original, sometimes requiring plenum modifications
- Venting may need replacement or modification depending on new equipment specifications
- Condensate drainage verified for proper operation, drain pan condition checked
- Electrical connections updated to new equipment specifications
- Thermostat compatibility verified
- Smart thermostat integration with proper staging on two-stage or modulating equipment
Typical duration: 1 day on-site
Complete System Replacement (Furnace + AC)
Both heating and cooling equipment replaced together. Common when both components reach end of service life or when efficiency upgrade is desired across the system. Also common when adding AC to original heating-only home as part of furnace replacement project.
Typical pricing:
- Standard combined system: $10,000–$16,000
- Two-stage combined system: $14,000–$22,000
- Variable-speed combined system: $18,000–$28,000+
Heat Pump as Furnace Alternative
Heat pumps as alternative to traditional gas furnace + AC combination — increasingly common in Kearns installations as customers consider the federal tax credits and IRA rebates available on heat pumps:
- All-electric heat pump — replaces both furnace and AC. Federal 25C tax credit up to $2,000. IRA Home Electrification rebates up to $8,000 for income-qualified households.
- Dual-fuel system — heat pump primary with gas furnace backup. Heat pump efficiency in mild weather, gas reliability in extreme cold.
For Kearns customers, dual-fuel systems are often the right approach — heat pump operation during the moderate Salt Lake spring, fall, and mild winter periods provides efficiency gains and air conditioning during summer, while gas backup eliminates concerns during severe cold snaps.
Heat pump pricing:
- Standard heat pump: $6,500–$10,500
- Two-stage heat pump: $9,000–$14,000
- Cold-climate variable-speed heat pump: $14,000–$22,000
- Dual-fuel system: $14,000–$24,000
What Proper Furnace Installation Includes
Manual J Load Calculation
Manual J calculates actual heating load based on home characteristics rather than guessing from existing equipment. Most Kearns homes need smaller furnaces than what they’re replacing — oversized furnaces short-cycle, distribute heat unevenly, and wear out faster than properly sized equipment.
Altitude-Corrected Combustion
Kearns elevation (4,300–4,500 feet) requires altitude-corrected gas pressure and combustion settings per manufacturer specifications. Manifold pressure adjustments compensate for lower air density at altitude. Improperly altitude-corrected furnaces produce elevated CO, reduced efficiency, and combustion problems.
Sealed-Combustion Venting
Sealed-combustion furnaces use PVC venting through exterior walls. Installation considerations include proper sizing per manufacturer specifications, correct slope for condensate drainage, termination location meeting code clearance, termination protection against snow blockage (relevant during heavy winter storms), and combustion air intake matched to manufacturer specifications.
Water Heater Venting Resolution
The often-overlooked element of atmospheric-vent furnace replacement. When the furnace stops using the chimney, the water heater (if it was sharing the chimney) faces issues. Options:
- Power-vented water heater — water heater with its own forced exhaust through wall
- Chimney liner installation — properly-sized liner accommodates water heater alone
- Atmospheric water heater replacement in coordinated water heater replacement project
Without addressing this, the existing oversized chimney can produce condensation issues that damage the chimney over time. Some installers ignore this, leaving customers with problems that show up months later. We include water heater venting evaluation in every atmospheric-vent furnace replacement project.
Condensate Management
Condensing furnaces produce slightly acidic condensate that requires proper drainage:
- Primary drain line with proper slope
- Condensate neutralizer or specific drain line material if local code requires
- Condensate pump if no gravity drain available
- Secondary drain pan beneath equipment
- Trap installation per manufacturer specifications
Gas Line Verification
New furnace installations include gas line verification — pressure at the equipment (7″ w.c. natural gas inlet typical), manifold pressure adjustment per altitude-corrected specifications (3.5″ w.c. natural gas), gas line capacity verification, and leak testing. Travis Hollings handles any gas line modifications under his Utah journeyman plumber endorsement.
Documented Commissioning
Every Aegis furnace installation includes commissioning with written documentation:
- Combustion analysis at altitude-corrected settings
- Gas pressure verification (inlet and manifold)
- Temperature rise across heat exchanger
- Static pressure across air handler
- Electrical readings on all motors
- Safety control verification
- Indoor CO measurement to verify safe operation
- Written commissioning report emailed at completion
Rebates and Tax Credits
- Federal 25C tax credit — up to $600 on qualifying furnace equipment, up to $2,000 on qualifying heat pump equipment
- Dominion Energy Therm-Wise rebates on qualifying high-efficiency natural gas equipment
- Rocky Mountain Power Wattsmart rebates on qualifying heat pump equipment
- IRA Home Electrification rebates — up to $8,000 for income-qualified households installing qualifying heat pumps
We model all available incentives in installation quotes and file rebate paperwork on your behalf within a week of installation.
Frequently Asked Questions
How much does furnace installation cost in Kearns?
Varies by equipment tier and scenario. 80% AFUE replacement $4,500–$7,500. 96% single-stage condensing $5,500–$8,500. 96% two-stage $7,000–$11,000. 96–98% modulating condensing $9,500–$14,000. Combined system replacement (furnace + AC) $10,000–$28,000+. Heat pump alternatives $6,500–$24,000.
How long does furnace installation take in Kearns?
Atmospheric-vent to sealed-combustion conversion typically 1–2 days due to venting work, water heater venting resolution, and condensate drainage installation. Modern equipment replacement typically 1 day. Combined system replacement 1–2 days. Heat pump installation 1 day.
What happens to my chimney when you install a new sealed-combustion furnace?
The chimney is typically no longer used for furnace venting. If your water heater was also venting through the chimney, we address water heater venting as part of the project — options include power-vented water heater, chimney liner installation, or coordinated water heater replacement. Ignoring water heater venting can cause chimney condensation damage over time, which is why we include this in every atmospheric-vent furnace replacement.
Should I replace my 80% AFUE atmospheric-vent furnace?
Usually yes when the existing equipment is 15+ years old. Modern 96% AFUE sealed-combustion replacement delivers significant efficiency gains (16+ percentage points), eliminates back-drafting and combustion air starvation safety concerns, and provides 15–20 years of additional service life. Federal 25C tax credits up to $600 apply to qualifying replacement equipment.
What size furnace do I need?
Manual J load calculation determines proper size based on home characteristics. Performed on-site during installation estimate. The right-sized furnace is often smaller than what’s being replaced; oversized equipment short-cycles and wears out faster.
Should I get a heat pump instead of a gas furnace?
Worth considering during equipment replacement. Heat pumps provide heating and cooling in one system, qualify for substantial tax credits and rebates ($2,000 federal credit plus up to $8,000 IRA rebates for income-qualified households), and provide efficiency gains in many operating conditions. Dual-fuel systems combine heat pump efficiency with gas backup for severe cold — often the right approach for Kearns customers. See our heat pumps page.
What rebates and tax credits apply?
Federal 25C tax credit up to $600 on qualifying furnaces, up to $2,000 on qualifying heat pumps. Dominion Energy Therm-Wise rebates on natural gas equipment. Rocky Mountain Power Wattsmart rebates on heat pumps. IRA Home Electrification rebates up to $8,000 for income-qualified heat pump installations.
Schedule Furnace Installation in Kearns
Call our shop at (385) 250-0687 for furnace installation in Kearns. In-home estimates include Manual J load calculation, equipment recommendations across price tiers, water heater venting evaluation, modeled rebates and tax credits, and financing options.
- Phone: (385) 250-0687
- Email: info@aegisheatingandair.xyz
- Address: 4454 Manhattan Ct, West Valley City, UT 84120