Spire Missouri
Spire Missouri Boiler Rebate is available to homeowners in St. Charles, MO.
Rebates for Spire Missouri customers who install high-efficiency natural gas boilers. Rebate amounts increase with efficiency: $600 for 90-94% AFUE and $900 for 95%+ AFUE. ENERGY STAR certification required.
Rebate for high-efficiency gas boiler replacement
Official source site checked live on 2026-06-22.
Data last verified 2026-06-09. How we verify our data.
In St. Charles, MO, you can combine this program with other local help to cut your cost:
A grant-savvy contractor in St. Charles, MO can handle the paperwork, inspections, and timelines so your funding releases on schedule. Getting matched is free.
This grant requires a licensed contractor
This grant requires the work to be done by a licensed contractor, and you will likely need a written estimate to apply. Get a free estimate from a contractor in St. Charles who knows grant paperwork.
Get matched with a contractorEach program sets its own contractor rules. Check the official program page for exact requirements.
Documents you will likely need
Requirements vary by program and locality. Confirm the exact rules on the official program page. We can help you prepare your paperwork, but you submit it yourself.
Deadline: Ongoing program, subject to budget availability
Ask us. It is free, and a real person answers within a business day.
Email us about this programUp to $900 rebate.
Spire Missouri Boiler Rebate is open to homeowners in St. Charles, MO. It has no income limit.
Apply directly with Spire Missouri using the official program link on this page or call (800) 887-4173. There is no middleman and no fee.
Grant-approved contractors understand the documentation, inspections, and timelines, so your funding releases on schedule.
Rebates and discounts that stack on top of any grant. Most are free to use.
This is just one of many grants, rebates, and free programs available. Stack them together to maximize your savings.
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