How Ameren Missouri’s HVAC FastTrack PAYS (Pay As You Save) Program Can Help You Upgrade to a High-Efficiency System

August 4, 2026
Ameren Missouri’s HVAC FastTrack PAYS | Upgrade Your System

How Ameren Missouri’s HVAC FastTrack PAYS (Pay As You Save) Program Can Help You Upgrade to a High-Efficiency System. If you’ve been thinking about upgrading your heating or air conditioning system, it’s important to find an option that balances affordability, comfort, and efficiency. SmartHouse’s partnership with Ameren’s FastTrack program helps you do just that.

SmartHouse’s project managers are prepared to provide recommendations for improving your home’s HVAC system and guide you through the FastTrack application process. Below, you can read about how Ameren’s FastTrack Program works, the application process, and what systems are eligible.

Key Takeaways

  • Ameren’s FastTrack program offers rebates and monthly on-bill financing for high-efficiency HVAC upgrades.
  • A high-efficiency system will lower your monthly electrical usage.
  • Your repayments to Ameren for their funded portion of the system upgrade are calculated to be lower than the initial estimated monthly savings provided by the new system.
  • SmartHouse handles the FastTrack application process for homeowners who only need to provide their utility account numbers.
  • Eligible Ameren Missouri households must have lived in their home for at least 12 months.
  • Popular upgrade options in St. Louis include Daikin heat pumps and high-efficiency air conditioners. For some homes, Mitsubishi ductless mini-splits are also a good option.

What is Ameren’s FastTrack Program?

Ameren’s FastTrack program, also known as FastTrack HVAC Pay As You Save (PAYS), is designed to make HVAC upgrades more affordable for Ameren Missouri customers. It does this through rebates and on-bill financing.

Ameren started this program as a way to give people with older, inefficient HVAC systems an opportunity to upgrade to something more efficient. When qualifying Ameren Missouri customers choose an eligible high-efficiency system, they may be able to take advantage of rebates, reducing the initial installation expense. Additionally, this program provides straightforward, on-bill financing for another portion of the cost.

To be eligible, you must be an Ameren Missouri customer who has lived in your home for at least 12 months. Ameren uses the past year of utility data to determine the projected saves your new system will provide.

The FastTrack program is not a loan. You won’t have to go through a credit check or any complicated financial processes. Instead, it’s designed to make things straightforward for homeowners.

How FastTrack HVAC PAYS Gives You Savings

Ameren’s FastTrack HVAC PAYS saves Ameren Missouri customers money now and later, with a lower upfront cost and more efficient electricity usage.

To get started, a SmartHouse project manager will enter your utility account numbers, information about your current home HVAC system, and our recommended system upgrades into Ameren’s system.

Ameren will use this to determine the estimated savings the new system will provide, which rebates you qualify for, and the amount of funding that they will provide for the new system (this funding will be 80% of the projected savings).

The remaining balance not covered by Ameren (your copay) can easily be paid by check, card, or one of our flexible financing plans.

Ameren Missouri’s HVAC FastTrack PAYS (Pay As You Save) Program | Upgrade your HVAC system with SmartHouse

How to Apply to Ameren Missouri’s FastTrack HVAC PAYS Program

Applying to the FastTrack HVAC PAYS program is easy. When you call SmartHouse, we take care of the process for you.

1. Contact SmartHouse

SmartHouse makes getting started with FastTrack easy for Ameren Missouri customers in St. Louis: We’ll meet with you to collect your Spire and Ameren utility account numbers, as well as information on your current HVAC system. After the visit, your project manager will provide this information to Ameren through their app, along with specifications regarding the proposed new system(s).

2. Ameren Evaluates Your Info

Ameren will use the information entered in the app to determine your eligibility and create an offer. If your home is eligible, they’ll send us a message with the offer information.

3. Receive Your Offer

If approved, we will send you a proposal to replace your system which includes Ameren’s rebates and financing offer. For the remaining balance, we can help you explore financing strategies to cover your copay.

If you have questions at any point in the process, your SmartHouse project manager can help explain the upgrades and the payment options.

What High-Efficiency Systems are Eligible for FastTrack?

Ameren doesn’t have a set list of HVAC systems that are eligible for FastTrack, but they do provide some rebate guidelines:

Product Type SEER2 Rating
Central Air Conditioners 15.2+
Mini-Splits 19+
Air-Source Heat Pumps 15.2+
Ground Source Heat Pumps 23+ (EER instead of SEER2)
Smart Thermostat ENERGY STAR Certified or from an Approved List

SEER2 and EER Explanation: A SEER2 rating is an efficiency rating that measures the total cooling provided by a unit versus the total energy used during a season. EER measures how efficiently a cooling system removes heat in 95° external weather. For both, a higher rating means a more efficient system.

For specific systems, at SmartHouse, we recommend Daikin FIT Air Conditioners/Heat Pumps, other high-efficiency Daikin AC units, and/or Mitsubishi Ductless Mini Splits. Here are the benefits they can provide for St. Louis homes:

Daikin Fit High-Efficiency Air Conditioners:

  • Effective yet quiet operations
  • Compact units that save space
  • High-quality, long-lasting materials
  • Routinely high SEER2 ratings
  • An inverter HVAC system

Daikin Fit Heat Pump:

  • Low noise levels while running
  • Small unit size is unobtrusive
  • Premium builds with long lifespans
  • Consistently high SEER2 ratings
  • Also an inverter HVAC system
  • One system that both warms and cools your home

Mitsubishi Ductless Mini Splits:

  • Extreme energy efficiency
  • Zoned home comfort
  • No ductwork
  • Ideal for older homes, room additions, and homes with uneven temperatures

Ameren Missouri’s HVAC FastTrack PAYS (Pay As You Save) Program | With SmartHouse, you can take advantage of Ameren Missouri's HVAC FastTrack PAYS Program to upgrade with brands like Daikin and Mitsubishi

Take Advantage of Ameren’s FastTrack HVAC PAYS Now

This is a deal that can give long-term benefits for Ameren Missouri customers. Upgrading your system now is an affordable way to reduce energy use and enjoy long-term savings.

To get started, call SmartHouse at 314-370-1816, text us at 314-310-2242, or reach out online.

We make it easy for Ameren Missouri customers in St. Louis to take care of Ameren Missouri’s HVAC FastTrack PAYS (Pay As You Save) program.