UNI 1000 Wood Boiler 3400K BTU High-Efficiency Heating
UNI 1000 Wood Boiler 3400K BTU High-Efficiency Heating is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Delivery and Shipping
Delivery and Shipping
We offer fast and reliable shipping across the continental U.S., with free shipping available on most orders (exclusions may apply based on brand and product type). Orders are typically processed within 1–2 business days and transit time is usually 4–7 business days. Larger items may ship via freight and require a scheduled curbside delivery. Please ensure your contact details are accurate at checkout. For questions about delivery timelines, shipping eligibility, or special requests, feel free to contact us directly. See policy
Price Match Guarantee
Price Match Guarantee
Find a lower price? Call +1(855-799-1672) and we'll match it! (Some exclusions may apply. See ourLowest Price Guarantee Policyfor more information)
Returns
Returns
Our return policy covers a 30-day period from the date of purchase. To be eligible, items must be unused, in their original packaging, and accompanied by proof of purchase. Defective products are eligible for free returns, with options for a refund or replacement. Customer remorse returns may incur return shipping fees and restocking fees. Refunds are processed within a specified timeframe, subject to restocking fees if applicable. Late or missing refunds should be addressed with your bank or credit card company first. Exchanges may be accepted for defective or damaged items. Shipping costs for returns are typically the responsibility of the customer, except in cases of damaged products. For further details or inquiries, please contact us via phone, email, or live chat.See policy
✅ Authorized Online Dealer
🚚 Free Shipping + No Sales Tax (exclusions may apply)
💲 We Beat The Lowest Price
📦 Fast 4-7 Day Delivery
🏭 Manufacturer Warranty Included
❓ Questions? Call Our Experts: +1 (855-799-1672)
Description
Description
UNI 1000 Wood Boiler 3400k — Efficient Modulating Wood Boiler with Gasification Mode
Commercial Grade | Built for Heavy-Duty Heating
The UNI Wood Boiler is designed for high-performance heating in large commercial spaces. Built with advanced gasification mode and a smart chimney sensor, this unit offers outstanding fuel efficiency while burning wood, coal, or woodchips.
Its spacious firebox, high-grade boiler steel construction, and customizable smart controller ensure reliable, long-lasting heat — even for the largest applications.
Specifications:
-
Heating Capacity: Up to 85,000 ft²
-
Firebox Capacity: 573 gal.us
-
Accepts Log Lengths: Up to 132"
-
Dimensions: 58" (W) x 158" (D) x 126" (H)
-
Weight: 8,800 lbs
-
Fuel Type: Wood, Coal, Woodchips (Manual Feed)
-
Made in Europe
-
Warranty: 10 Years
Main Features:
Firebox
-
Large loading chamber with durable cast-iron grates.
Smart Controller
-
Advanced automation with multiple customizable options.
-
Controls fan speed, central heating pump (CH), and hot water pump (DHW).
-
Programmable combustion settings based on fuel type and operating conditions.
Automated Fan
-
Adjustable speeds for optimized combustion and efficiency.
Burning Time
-
Up to 24 hours of continuous operation per load.
Heat Exchanger
-
Efficient tubular design for maximum heat transfer.
Boiler Steel Frame
-
Constructed from ASTM A106 certified boiler steel, 5mm thick.
-
Powder-coated casing with multi-layer coating and 2” non-combustible insulation.
-
Designed for long-term reliability and thermal protection.
Performance You Can Count On
The UNI Wood Boiler ensures clean combustion with micro air metering in both lower and upper fire chambers, guaranteeing efficiency of 86% or higher. Exhaust gas temperatures remain below 260°F to 300°F, even under heavy load. When combined with a buffer tank, the gasification mode allows for maximum energy extraction from solid fuels.
Built for simplicity, reliability, and power, the UNI is a heat source you can trust for even the most demanding commercial applications.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.








