Full HVAC System Replacement in Utah: What's Involved
Replacing AC + furnace + coil as a matched system: what changes pricing, what's included on every quote, the rebate stack, and how to pick efficiency tier.
Variables
What changes the number
These are the specific factors that determine your quote, knowing them lets you compare quotes apples-to-apples instead of guessing. Your flat-rate price comes from a free in-home estimate, in writing before any work starts.
System tonnage
Sized via Manual J. Most Utah homes need 2.5-4 tons.
Efficiency tier
Base tier: 14.3 SEER2 AC + 80% AFUE furnace. Upgraded: 16+ SEER2 + 96%+ AFUE + variable-speed blower. Premium: 18+ SEER2 inverter + 97%+ AFUE modulating furnace.
Ductwork condition
Existing ducts under 12 years old in good condition: included as-is. Older or undersized: rework adds time and materials.
Indoor unit location
Garage / basement install: standard. Crawlspace, attic, or closet install with limited access: adds 4-8 hours of labor.
Scope
What's included vs. extra
Compare this list against any other Utah quote you receive, line items hidden in one quote and itemized in another are how the same job ends up “cheaper” on paper but more expensive after add-ons.
Included in our quote
- Manual J load calculation (room-by-room)
- Manual D ductwork sizing review
- Matched AC condenser + indoor coil + furnace (AHRI-certified pairing)
- New refrigerant lineset
- New plenum sheet metal where needed
- 240V whip + outdoor disconnect
- Smart thermostat
- Permit + inspection
- Combustion analysis + system commissioning
- 10-year parts warranty (registered)
- 2-year labor warranty (we cover both AC and furnace callbacks)
Not included (may be extra)
- Major ductwork rework (only flagged when Manual D shows it's needed)
- Electrical panel upgrade
- Asbestos abatement on existing plenum
- Boiler / hydronic heat conversion (different scope)
Stack the savings
Rebates that apply
These are independent programs that can stack on the same install, and we file the rebate paperwork on your behalf. The federal 25C tax credit ended for equipment installed after December 31, 2025. The size your hvac system link below shows exactly which apply to your install.
Rocky Mountain Power Wattsmart
Tier-2 SEER2 + tier-1 AFUE
Combined utility rebate for high-efficiency matched systems.
Enbridge Gas Utah gas rebate
96%+ AFUE furnace
Gas-utility rebate that stacks on top of RMP.
FAQ
Frequently asked questions
Is full system replacement always better than just replacing the broken half?
+
If both halves are 12+ years old: yes, full replacement wins on TCO and AHRI matching. If one half is new (under 5 years): replace just the failed half and ensure refrigerant + airflow compatibility. Between 5-12 years: it's a judgment call we make on the quote based on remaining life + ductwork condition.
Can I replace the AC now and the furnace later (or vice versa)?
+
Yes. We design the install so the new half is matched to the existing half AND ready for a future matched upgrade. Just know that AHRI ratings + warranty terms only apply when both halves are matched, partial replacements may not qualify for the highest rebate tiers.
Get a real number for your home
Walk through the questions in 2 minutes to size the right system for your home, then book a free in-home estimate with the flat-rate price in writing.
Keep comparing
Related cost guides
AC Replacement in Utah: Cost Drivers and What's Included
What drives AC replacement pricing in Utah, plus the rebate stack.
Furnace Replacement in Utah: Cost Drivers and What's Included
What drives furnace replacement pricing in Utah.
Heat Pump Installation in Utah: Cost Drivers and Rebate Stack
Heat pump pricing factors and the federal + state + utility rebate stack.