Empire Stove Gateway 3500 Wood Burning Stove - WB35FS
Empire Gateway 3500 — Wood Burning Stove
The Gateway 3500 is a high-capacity non-catalytic wood stove delivering up to 110,000 BTU/hr with a 10-hour burn time. It’s suitable for 1,000–2,700 sq ft heating zones. The 3.5 cu ft firebox, air-wash glass, and no-mess ash pan make it powerful yet user-friendly. Designed for freestanding installation with standard chimney venting. Manual (PDF)
- Maximum output: 110,000 BTU/hr (dry cordwood)
- Long 10-hour burn under optimal conditions
- Non-catalytic combustion, secondary burn technology
- Log length up to 22″, optional blower support
Quick Facts
- Heating Area: 1,000 – 2,700 sq ft
- Burn Time: ~10 hours
- Firebox Volume: 3.5 cu ft
- Max Log Length: 22″
- Emission: 1.32 g/hr (EPA / CSA B415.1-10) – Average particulate
- Dimensions: 28⅛″ W × 34″ H × 24⅝″ D
- Warranty: Limited lifetime / tiered covered components (see manuals)
Technical Specifications
| Brand | Empire |
|---|---|
| Model | Gateway 3500 (WB35FS) |
Performance
| Max Heat Output | 110,000 BTU/hr |
|---|---|
| Heating Capacity | 1,000 – 2,700 sq ft |
| Burn Time | ~10 hrs |
| Firebox Volume | 3.5 cu ft |
| Log Length | Up to 22″ |
| Particulate Emission | 1.32 g/hr |
Installation
| Flue Diameter | 6″ (150 mm) |
|---|---|
| Mounting | Freestanding |
| Clearances | Refer to the manual (PDF) |
Materials & Dimensions
| Body Material | Steel with cast-iron parts |
|---|---|
| Glass Type | Ceramic glass with air-wash |
| Dimensions (W×H×D) | 28⅛″ × 34″ × 24⅝″ |
| Weight | Not specified in spec sheet |
Documents & Support: Owner & Installation Manual (PDF) · Spec Sheet (PDF)
FAQs
Is it EPA-certified?
Yes — tested and certified to EPA / CSA B415.1-10 emissions (1.32 g/hr average particulate).
What is the burn time?
Up to ~10 hours under optimal conditions with well-seasoned hardwood.
What log length fits?
Logs up to 22″ long can be used.
Does the stove need a chimney?
Yes — requires a 6″ chimney outlet and proper venting per manual.
Are blower kits supported?
Yes — optional blower (up to 130 CFM) can be added.
How are the clearances defined?
Clearances to combustibles are documented in the manual (PDF).
What warranty is included?
Limited lifetime warranty on core structural components; variable term on parts. See manual for full details.
Warranty
Empire Gateway 3500 (WB35FS) — Manufacturer’s warranty: limited lifetime on key parts and tiered coverage on other components.
Coverage
| Component | Term | Notes |
|---|---|---|
| Combustion chamber welds / cast door frame | Lifetime | Defects under normal use |
| Surrounds, heat shields, ash drawer, baffle, supports | 7 years | Manufacturing defects |
| Handles, glass retainers | 5 years | Wear parts / mechanical components |
| Blowers / sensors / wiring | 2 years | Electrical / accessory items |
| Paint, gaskets, insulation, firebricks | 1 year | Consumable, finish, wear items |
Exclusions & Conditions
- Warranty is valid only for original retail purchaser with proof of sale.
- Misuse, unauthorized modifications, improper installation or maintenance void coverage.
- Labor, shipping, and installation costs are not covered unless explicitly stated.
Manuals & Installation
- Installation & Operation Manual: Download (PDF)
- Spec Sheet: Download (PDF)
From the Manual
“Recommended heating area (dry cordwood): 1,000 to 2,700 ft².”
“Maximum heat output (dry cordwood): 110,000 BTU/h.”
Pre-Install Checklist
- Select and install appropriate 6″ chimney and connector pipe per local codes.
- Follow clearance distances to combustibles as laid out in manual.
- Ensure floor strength and hearth protection for stove weight and radiant heat.
- Use fresh-air intake for sealed homes (if required by code or mobile installation).
Compliance & Safety
Install per the manufacturer instructions and local building/fire/electrical codes. Hire qualified professional when required.
Operate only with properly seasoned wood. Maintain chimney and inspect frequently. Keep combustibles at safe distances. Install CO and smoke detectors.