- Fuel: Oil-Fired
- System: Hot Water
- Combustion: Atmospheric
- Capacity: 4 sizes, .75 to 1.65 GPH Firing Rates
- Efficiency: AFUE 87.0%

The Q3 boiler is a hot water boiler heating system which oil-fired cast iron boiler offers high-efficiency. Its cast-iron design is recognized by heating professionals everywhere as the longest lasting, most durable heat exchanger material. It’s an ideal choice for new construction.
The Q3 is DOE 2021 compliant
Related products
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HD Series
HD Series- Material: 16-ga. steel front cover, 20-ga. back panel
- Heights: 8-1/2" (one tier) & 14" (two tier)
- Depth: 3-1/2"
- Lengths: 2' - 8'
- Heavy gauge enclosure and support brackets
- Cover secures together with screws at each bracket location
- 3/4", 1" and 1-1/4" copper/aluminum elements permit higher flow rates, longer series-loop runs and lower pump loads where required
- 1-1/4" all-steel element, for use in one or two pipe steam systems
- Factory pre-assembled in individual cartons for rapid installations
- Finish: Galvanized is standard. Available in baked enamel
- Custom color available on special order
- Telescopic cover accessories
- Accessories have a screw hole to secure accessories to front cover
- Pan head screws supplied by others
- The picture on the right is an HD-850 installation in the Milwaukee Airport baggage claim area. This installation was done years ago. It is installed right by the cart area and receives a lot of abuse. Please note other than some paint damage it is in great shape. Seeing is believing, This is indeed “Tough Stuff” and it would be tough finding a higher abuse area to install it in.
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J Series
J Series- Material: 18, 16 or 14 gauge
- Heights: 9-7/8" (one tier), 14" (one tier), 21" (two tier), & 28" (three tier)
- Lengths: 2' to 8'
- Depth: 5-1/4"
- Single-piece cover mounts on wall brackets
- Optional Damper
- Galvanized finish is standard. Baked enamel available.
- Copper with aluminum fins: C-340, C-440, C-540
- Steel with electro-galvanized steel fins: S-532, S-540, S-832
- Connectors align cover sections which butt to one another, providing a near seamless joint
- Uses internal or external splice plate.
- Telescopic accessories
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Base / Line 2000
Base / Line 2000- Residential hot water
- Output: 570 Btuh/FT (180 Deg at 1 GPM)
- Height: 7-3/8", Depth: 2-11/16" Lengths: 2' - 10'
- Made in the USA by the leader in baseboard heating
- Designed for single homes, apartments and renovations
- Neat fitting accessories stay in place to help maintain beautiful appearance
- Optional Flared element tubes (available in 1/2" or 3/4") facilitate joining sections
- Industry’s best high strength support brackets & no-noise expansion cradles
- 1-3/4" floor-to-front cover opening promotes good air circulation for effective convection heating
- Fully modulating, pivot mounted damper helps control individual room temperatures
- Extendable accessories for wall-to-wall fit with no cutting, makes a neat installed appearance
- Easy to open zip-strip cartons
- Shipped fully assembled for fast, easy installation
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Multi / Pak 95
Multi / Pak 95- Material: 18 gauge galvanized steel
- Heights: 9-3/4" (one tier) & 16-3/4" (two tier)
- Depth: 5-1/4"
- Lengths: 2' to 8'
- Factory packaged with brackets and hangers
- Two-piece interlocking top cover/front cover mount on wall brackets
- Damper optional
- Wall brackets and Hangers packaged with complete assembly
- Finish: Nu-White baked enamel is standard. Custom color available on special order.
- Anodized architectural aluminum grille optional.
- Lengths from 2' to 8'
- Elements: 3 copper and 3 steel element options
- Telescopic cover accessories
- Fuel: Oil Fired
- System: Hot Water
- Combustion: Atmospheric
- Capacity: 105-231 MBH
- Up to 87.0% AFUE
- For residential to light commercial requirements
- Robust triple pass cast-iron heat exchanger
- Direct Vent model available
- Installer-friendly features
- More BTU's per section than ordinary boilers
- Metal push nipple to connect individual sections
- 25 Year Limited Lifetime Warranty
- The Q3 is DOE 2021 compliant
Your home will be more comfortable with an Q3 boiler because it does not use household air for combustion. It draws combustion air directly from the outdoors and expels exhaust directly to the outdoors through flexible exhaust tubing. Direct venting also reduces the risk of oily odors entering the living area.
The Q3 boiler is designed to protect against the adverse effects of changing operating conditions. Many boilers suffer from poor combustion and soot buildup when their setup conditions are changed by cold oil, cold air or changes in chimney draft. The contoured shape of Intrepid’s heat exchanger has one of the lowest draft losses in the industry. This supports stable combustion. Burners are configured for each specific model to provide smooth, clean, efficient operation. Unlike most oil boilers, Intrepid’s push nipples are located to the side, out of the way of the flue gasses. This creates more uniform heat transfer, minimizes draft loss and reduces soot build-up.


