Stillwater homeowners replacing a furnace in 2026 typically pay $2,800–$5,500 for a complete gas furnace installation. Stillwater is a historic Washington County rivertown on the St. Croix River, with one of the most diverse housing stocks in the metro — ranging from 1880s Victorian homes in the downtown bluffs to modern new construction in Liberty on the Lake and surrounding developments. This diversity creates a wide cost range and occasionally complex installation scenarios. Furnace Direct serves Washington County with same-day delivery and factory-direct pricing.
Stillwater Housing Diversity and Furnace Sizing
- Historic downtown/bluff homes (pre-1940, 1,200–2,500 sq ft): Often require venting modifications; 80,000–100,000 BTU, $3,200–$5,000 installed
- Mid-century and postwar neighborhoods (1950s–80s, 1,200–2,000 sq ft): Standard replacement; 80,000 BTU, $2,800–$3,900 installed
- Newer Liberty/Brown's Creek developments (1,800–3,500 sq ft): 80,000–120,000 BTU, $3,200–$5,500 installed
Stillwater Furnace Replacement Cost Table
| Furnace Type | Equipment | Installed Total |
|---|---|---|
| 80% AFUE, 80,000 BTU | $750–$1,100 | $2,600–$3,400 |
| 96% AFUE, 80,000 BTU | $1,100–$1,500 | $3,000–$3,900 |
| 96% AFUE, 100,000 BTU | $1,300–$1,700 | $3,300–$4,400 |
| 96% AFUE, 120,000 BTU | $1,500–$2,000 | $3,700–$5,000 |
| Variable-speed two-stage | $1,800–$2,500 | $4,200–$5,500 |
Historic Stillwater Homes: Special Considerations
Stillwater's pre-1940 homes present installation challenges that are common in the historic districts:
- Gravity warm-air or old steam systems: A small number of very old Stillwater homes still have non-forced-air heating. Conversion to modern forced air adds $500–$1,000+.
- Chimney-vented systems: Very common in older Stillwater homes. Switching to 96% AFUE requires exterior PVC penetrations — $200–$500 depending on wall construction.
- Stone or brick construction: PVC venting penetrations through masonry walls require specialized drilling and add $150–$300 to standard venting costs.
Rebates for Stillwater Homeowners
- CenterPoint Energy: Up to $200 for 96%+ AFUE gas furnaces
- Federal Tax Credit: 30% of equipment cost, up to $600
Washington County Permits
All Stillwater furnace replacements require mechanical permits. Furnace Direct handles permit applications and coordinates inspections with Washington County for every installation.
How much does furnace replacement cost in Stillwater MN?
Furnace replacement in Stillwater typically costs $2,800–$5,500 installed. Older historic homes may need venting modifications. Newer Liberty-area homes run higher due to larger square footage.
Does Furnace Direct serve Stillwater?
Yes — Furnace Direct delivers same-day to Washington County including Stillwater, with next-day installation. We're experienced with the venting challenges common in older Stillwater homes.
Are there special furnace installation considerations for historic Stillwater homes?
Yes — pre-1940 Stillwater homes often need chimney-to-PVC venting conversion ($200–$500), and some historic stone or brick homes require specialized masonry drilling. Furnace Direct assesses these factors before quoting final prices.
What rebates can Stillwater homeowners claim?
CenterPoint Energy offers up to $200 for 96%+ AFUE units, and the federal 30% tax credit adds up to $600 on qualifying equipment. Furnace Direct provides all rebate documentation at installation.
Get installed pricing on a new system.
Tell us a little about your home and what you're replacing. We'll send real numbers on a Goodman 96% AFUE setup — equipment shipped nationwide, licensed install in select metros. No contractor markup, no obligation.