We carry
the Williamson- Thermoflo brand of furnaces, boilers, and water heaters.
Williamson-Thermoflo brings you over a century of experience with
high-quality comfort products. You can count on Williamson and Thermoflo
brand heating products to meet your comfort needs.

Choose from:
oil_furnaces,
BOILERS, or WATER HEATERS.

Centennial Series - High Boy
Series 2
| Oil Furnace |
91,000 to 175,000
Btuh Input |
|
|
• AFUE's to 85.9%
• Heat exchanger
- Heaviest in the industry, Front flue with top or right side
venting option, Interior baffling for maximum efficiency, Dual
spring-loaded clean-out ports for easy service and maintenance,
Spring-loaded observation port with test port, Heavy gauge burner
mounting plate with studs and nuts.
• Blower - Belt
drive or multi-speed direct drive, Slide-out blower/motor – easily
removed for service.
• Cabinet -
Appliance finish powder coat paint, Heavy gauge with "Seal-Tite"
construction, Foil-faced insulation for hand-cool surface,
Fully-enclosed burner and controls.
• Combustion Chamber -
Preformed slide-out chamber for easy service.
• Burner and controls
- Factory-wired with simple plug-in connections, PSC motor,
Solid state ignitor. |
Centennial Series - Low Boy
Series 2
| Oil Furnace |
91,000 to 175,000
Btuh Input |
|
|
• AFUE's to 85.9%
• Heat exchanger
- Heaviest in the industry, Front or rear flue - front flue can
be vented from top or right side, Interior baffling for maximum
efficiency, Dual spring-loaded clean-out ports for easy service and
maintenance, Spring-loaded observation port with test port, Heavy gauge
burner mounting plate secured with studs and nuts.
• Blower - Belt
drive or multi-speed direct drive, Slide-out blower/motor – easily
removed for service.
• Cabinet -
Appliance finish powder coat paint, Heavy gauge with "Seal-Tite"
construction, Foil-faced insulation for hand-cool surface,
Fully-enclosed burner and controls.
• Combustion Chamber -
Preformed slide-out chamber for easy service.
• Burner and controls
- Factory-wired with simple plug-in connections, PSC motor,
Solid state ignitor. |
|

|
OWB Oil-Fired Water Boiler
0.75 to 2.00 GPH Input
|
Construction
• Factory Packaged
• Factory Tested
• Easy service
+ Swing-away burner door
+ Low draft loss
+ Top access cleanout cover
+ Plug-in wiring harness
• High efficiency oil burner
+ Flame retention head design
+ Solenoid valve
+ PSC motor
+ Solid state ignitor
• Rear flue outlet
• Cast iron sections with built-in air separator
• Insulated heavy-gauge steel jacket
• Limited lifetime warranty |
Equipment
• Factory-assembled
cast iron section assembly,
including aluminized steel flue collector,
swing-away burner mounting door, with refractory
blanket and recessed target wall in combustion
chamber.
• Taco 007 circulator
• High efficiency flame-retention oil burner
(Beckett AFG, Weil-McLain QB, or
Carlin EZ)
• High limit control with circulator relay
• Built-in air separator
• Combination pressure/temperature gauge
• 30 PSIG ASME relief valve
• Drain valve
• Barometric damper
Optional
• Two-stage oil burner
fuel unit
|
OWT Oil-Fired Water Boiler
0.75 to 2.00 GPH Input
With tankless heater |
Construction
• Factory Packaged
• Factory Tested
• Easy service
+ Swing-away burner door
+ Low draft loss
+ Top access cleanout cover
+ Plug-in wiring harness
• High efficiency oil burner
+ Flame retention head design
+ Solenoid valve
+ PSC motor
+ Solid state ignitor
• Rear flue outlet
• Cast iron sections with built-in air separator
• Insulated heavy-gauge steel jacket
• Limited lifetime warranty
|
Equipment
• Factory-assembled
cast iron section assembly,
including aluminized steel flue collector,
swing-away burner mounting door, with refractory
blanket and recessed target wall in combustion
chamber.
• Taco 007 circulator
• High efficiency flame-retention oil burner
(Beckett AFG, Weil-McLain QB, or
Carlin EZ)
• High limit control with circulator relay
• Built-in air separator
• Combination pressure/temperature gauge
• 30 PSIG ASME relief valve
• Drain valve
• Barometric damper
• Tankless heater
Optional
• Two-stage oil burner
fuel unit |
OSB/T Oil-Fired Steam
Boiler
1.00 to 2.00 GPH Input
Optional tankless heater |
Construction
• Factory Packaged
• Factory Tested
• Easy service
+ Swing-away burner door
+ Low draft loss
+ Top access cleanout cover
+ Plug-in wiring harness
• High efficiency oil burner
+ Flame retention head design
+ Solenoid valve
+ PSC motor
+ Solid state ignitor
• Rear flue outlet
• Cast iron sections with built-in air separator
• Insulated heavy-gauge steel jacket
• Limited lifetime warranty
|
Equipment
• Factory-assembled
cast iron section assembly,
including aluminized steel flue collector,
swing-away burner mounting door, refractory
blanket and recessed target wall in combustion
chamber.
• Flame-retention oil burner
(Beckett AFG, Weil-McLain QB, or
Carlin EZ)
• High limit pressure control
• Probe low water cutoff
• Pressure gauge
• Siphon
• Gauge glass, gauge cocks and guards
• 15 PSIG ASME relief valve
• Drain valve
• Barometric damper
Optional
• Two-stage oil burner
fuel unit
• Tankless heater, shipped in separate carton
|


| Our
Williamson water heaters all have a stainless steel interior tank
and a life time warranty to the original purchaser.
Design Features
• Tank within a tank heat exchanger
• Self cleaning
• Polyurethane insulation
• Low pressure drop
• 100%
Leak-tested
Easy installation
• Simple wiring and piping
• No separate vent, burner or fuel
lines
More hot water
• Twice
the peak flow of a tankless coil
• 50%
more than gas-fired water heaters
• Three times as much as an
electric hot water heater |
|
If you would like to
order any of the equipment shown here, please contact
us. |