See what you could save in St. Louis
Tap the upgrades you're considering to explore Ameren Missouri, Spire, and Daikin rebate maximums. Eligibility applies — we'll confirm what you actually qualify for at your free estimate.
Air-source heat pump (15.2+ SEER2)
up to $2,000
On-bill PAYS rebate through Ameren Missouri's FastTrack HVAC program for a qualifying 15.2+ SEER2 air-source heat pump, installed by a participating contractor. Older/working-unit rules apply.
Dual-fuel heat pump system
up to $2,000
For a qualifying dual-fuel system (heat pump paired with a gas furnace) through Ameren Missouri's PAYS / FastTrack HVAC program via a participating contractor.
Geothermal / ground-source heat pump (23+ EER)
up to $5,000
For a qualifying 23+ EER ground-source (geothermal) heat pump through Ameren Missouri's PAYS / FastTrack HVAC program.
Central air conditioner (15.2+ SEER2)
up to $1,000
On-bill PAYS rebate through Ameren Missouri's FastTrack HVAC program for a qualifying 15.2+ SEER2 central air conditioner, installed by a participating contractor.
Ductless mini-split (19+ SEER2)
up to $500 / ton
For a qualifying 19+ SEER2 ductless mini-split through Ameren Missouri's PAYS / FastTrack HVAC program. The amount scales with system size.
Scales with system size (per ton of capacity).
Smart thermostat
up to $250
For a qualifying smart thermostat through Ameren Missouri.
High-efficiency gas furnace (96%+ AFUE)
up to $300
Spire homeowner prepaid-card rebate for a 96%+ AFUE gas furnace (about $200 for 92–95.99% AFUE), with licensed installation.
About $200 for a 92–95.99% AFUE furnace.
High-efficiency gas boiler (90%+ AFUE)
up to $300
Spire homeowner prepaid-card rebate for a 90%+ AFUE gas boiler, with licensed installation.
Smart / Wi-Fi thermostat
up to $75
Spire rebate for a qualifying smart/Wi-Fi thermostat — up to $75 where current program rules apply.
Daikin FIT system instant rebate
$750 instant
Daikin's instant rebate on a complete Daikin FIT system with a Daikin ONE thermostat, installed by a participating Daikin Comfort Pro Authorized Dealer. Install window May 1 – Aug 31, 2026.
Tap the upgrades you're considering
You may qualify for up to $0
Program maximums for qualifying equipment — eligibility applies, and this is not a quote.
Amounts shown are published program maximums for qualifying equipment — not a quote, and not guaranteed. Eligibility depends on your home, the equipment installed, your utility, and current program rules and funding; some rebates can't be combined for the same system, and per-ton or percentage rebates scale with system size. Ameren Missouri PAYS / FastTrack rebates are paid on-bill through a participating contractor; Spire rebates are homeowner prepaid-card rebates for licensed installs; the Daikin FIT instant rebate requires a participating Daikin Comfort Pro Authorized Dealer. The federal 25C energy-efficiency tax credit ended December 31, 2025 — there is no federal HVAC tax credit for systems placed in service in 2026. We don't provide tax advice; we'll help confirm what you qualify for at your free estimate.