800-860-3577
Delivery Truck
Scheduled delivery to your door.
A scheduled delivery is available only Monday - Friday during normal business hours and used for heavy and oversized items (large TVs, large furniture and large appliances). This service does not include unpacking, plugging in, installation or debris removal. If there are any stairs leading to your delivery, please contact a sales associate for a quote.

Note: Scheduled delivery services are available to most of the contiguous United States (available in parts of Alaska and Hawaii). Call 800-860-3577 for more information.
Main Content

Weil-McLain Ultra Series 3-UE Gas Boiler - ULTRA399

Energy Star
Shop Weil-McLain
Weil-McLain Logo
Abt Model: ULTRA399 UPC: 158965874907
Sorry, this item is no longer available
Need help finding something similar?
Chat with one of our sales specialists
800-860-3577 Call   |  
Quick Specs
Key Features
What We Offer
  • Gallon Capacity:  2.1
  • Gas Fired Water Boiler With Cast Aluminum Heat Exchanger
  • Venturi Mixing Body
  • Designed To Operate In Low Temperature Condensing Applications
  • Outdoor Reset And Domestic Hot Water Priority Standard
  • Negative Regulated Gas Valve
  • Modulates With 5 To 1 Turn-Down Ratio Capability
  • Free Shipping on 1000s of Items
  • Guaranteed Satisfaction
  • Life Long Customer Service

Weil-McLain Ultra Series 3-UE Gas Boiler, Model ULTRA399

Features:

  • Gas fired water boiler with cast aluminum heat exchanger
  • Venturi mixing body mixes air and gas providing higher efficiency
  • Designed to operate in low temperature condensing applications
  • Outdoor reset and domestic hot water priority standard
  • Negative regulated gas valve precisely delivers gas to the boiler
  • U-Control gives you the power for easy set-up and maintenance
  • Modulates with 5 to 1 turn-down ratio capability
  • Variable speed motor matches combustion output to heating needs
  • High grade stainless steel burner features quiet operation, high efficiency, and cleaner combustion for low NOx applications

Specifications:

  • A.G.A. Input (MBH): 399
  • DOE Heating Capacity (MBH): 365
  • Net I=B=R Ratings (MBH): 317
  • Min. Vent Size: 4in. PVC/CPVC
  • Annual Fuel Utilization Efficiency (AFUE): 91.7%

Approximate Weight:

  • Shipping: 297 lbs

Warranty Information:

  • Manufacturer Warranty (authorized online retailer): 5 Years Parts and Labor
California customers:
Energy Star Certified Energy Star Certified