JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser.

We are closed on Friday, July 4th, 2025 for Independence Day weekend and reopening Monday July 7th, 2025. Enjoy and be safe.

Toggle Nav

Search

We ship to most places in continental USA

Chat with us

Need help

Our Locations

Home
HVAC
Boilers
Oil Boilers

Oil Boilers

Mbtu

Fuel Type

Medium

Water
Steam

Brands

Peerless WBV Oil Fired Water Boilers With Coil

Oil-Fired, Water

With Coil

Packaged
Retail : $6,546.00 $4,713.12

You Save (28%)
Peerless 13509 WBV-E-05-WPCTL WBV® Series 273 Input MBtu 86% AFUE Oil-Fired Water Boiler With Circulator, Hydrostat, and Tankless Coil (Packaged - Burner Sold Separately)
6546.004713.12
273 MBtu
13509
In Stock

Peerless 14360 WBV-E-03-WPCTL WBV® Series 147 Input MBtu 87.5% AFUE Oil-Fired Water Boiler with Circulator, Hydrostat, and Tankless Coil - (Packaged - Burner Sold Separately)
4574.003293.28
147 MBtu
14360
In Stock

Peerless 14459 WBV-E-04-WPCTL WBV® Series 210 Input MBtu 87% AFUE Oil-Fired Water Boiler With Circulator, Hydrostat, And Tankless Coil - (Packaged - Burner Sold Separately)
5231.003766.32
210 MBtu
14459
In Stock
Qty:
Peerless WBV Steam Boilers With Coil

Oil-Fired, Steam

Without Burner

With Coil

Packaged
Retail : $5,189.00 $3,736.08

You Save (28%)
Peerless 14466 WBV-E-04-SPTL WBV® Series 175 Input MBtu, 85.6% AFUE Residential Oil-Fired Steam Boiler with Circulator and Tankless Coil (Packaged - Burner Sold Separately)
5866.004223.52
175 MBtu
14466
In Stock

Peerless 14378 WBV-E-03-SPTL WBV® Series 119 Input MBtu, 85.6% AFUE Residential Oil-Fired Steam Boiler with Circulator and Tankless Coil (Packaged - Burner Sold Separately)
5189.003736.08
119 MBtu
14378
In Stock
Qty:
Saint Roch SRU Boiler with Coil

Oil-Fired, Water

Cast Iron Heat Exchanger

Direct Vent

87% Efficiency

With Coil
Retail : $3,372.00 $2,454.82

You Save (27%)
Saint Roch SRU30/WT Oil Fired 140 Input Mbtu Water Boiler 87% AFUE, Includes Burner, Hot Water Coil and Trim (Knockdown Boiler- Assembly is required)
3372.002454.82
140 MBtu
SRU30/WT
In Stock

Saint Roch SRU40/WT Oil Fired 175 Input Mbtu Water Boiler 87% AFUE, Includes Burner, Hot Water Coil and Trim (Knockdown Boiler- Assembly is required)
3863.002812.26
175 MBtu
SRU40/WT
In Stock

Saint Roch SRU50/WT Oil Fired 210 Input Mbtu Water Boiler 87% AFUE, Includes Burner, Hot Water Coil and Trim (Knockdown Boiler- Assembly is required)
4358.003172.62
210 MBtu
SRU50/WT
In Stock

Saint Roch SRU60/WT Oil Fired 245 Input Mbtu Water Boiler 87% AFUE, Includes Burner, Hot Water Coil and Trim (Knockdown Boiler- Assembly is required)
4670.003399.76
245 MBtu
SRU60/WT
In Stock
Qty:
Green Mountain GMOW Series I

Oil-Fired, Water

Cast Iron Heat Exchanger

Chimney Vent

86% Efficiency

Without Burner

With Coil
Retail : $5,796.00 $3,315.31

You Save (43%)
Green Mountain GMA308522210504 GMOWT 119 Input MBtu - 86% AFUE Oil-Fired Hot Water Boiler - with Tankless Coil - Chimney Vent (Burner Sold Separately)
3904.002233.09
119 MBtu
GMOW-3T
In Stock

Green Mountain GMA412522210504 GMOWT 175 Input MBtu - 86% AFUE Oil-Fired Hot Water Boiler - with Tankless Coil - Chimney Vent (Burner Sold Separately)
4162.002380.66
175 MBtu
GMOW-4T
In Stock

Green Mountain GMA516022210504 GMOWT 224 Input MBtu - 86% AFUE Oil-Fired Hot Water Boiler - with Tankless Coil - Chimney Vent (Burner Sold Separately)
5102.002918.34
224 MBtu
GMOW-5T
In Stock

Green Mountain GMA618522210504 GMOWT 259 Input MBtu - 86% AFUE Oil-Fired Hot Water Boiler - with Tankless Coil - Chimney Vent (Burner Sold Separately)
5796.003315.31
259 MBtu
GMOW-6T
In Stock
Qty:
Burnham V8h(E) Series Package Boilers

Oil-Fired, Water

Cast Iron Heat Exchanger

Chimney Vent

86% Efficiency

With Burner

With Coil

With Pump

Packaged
Retail : $5,863.00 $4,104.10

You Save (30%)
Burnham PV8H3WET-TBWF, V8H, 120 Input MBtu, 86% AFUE, Water Trim front Heating Opening Heater Control Water Boiler, Chimney Vent, Limited Lifetime Warranty, Taco 007e Pump with Beckett Burner (Packaged)
5222.003655.40
120 MBtu
PV8H3WET-TBWF
In Stock

Burnham PV8H4WET-TBWF, V8H, 148 Input MBtu, 86.1% AFUE, Water Trim front Heating Opening Heater Control Water Boiler, Chimney Vent, Limited Lifetime Warranty, Taco 007e Pump with Beckett Burner (Packaged)
5863.004104.10
148 MBtu
PV8H4WET-TBWF
In Stock
Qty:
Peerless WBV Series Boiler

Oil-Fired, Water

Direct Vent

86% Efficiency

With Burner

With Coil

Packaged
Retail : $8,489.00 $6,112.08

You Save (28%)
Peerless WV-DV-03 Series WV-DV 161 Input MBtu - 87% AFUE Residential Oil-Fired Water Boiler - Direct Vent
8489.006112.08
105 MBtu
WV-DV-03
In Stock
Qty:
Williamson OWT Series 3 Water Boilers

Oil-Fired, Water

Cast Iron Heat Exchanger

Chimney Vent

87% Efficiency

Without Burner

With Coil

Packaged
Retail : $5,680.00 $3,933.40

You Save (31%)
Williamson OWT-3-T-S3-W OWT Series 3 98,000 BTU 87% AFUE Oil-Fired Chimney Vent Water Boiler w/ Tankless Heater Coil, Taco 007, 3 Section (Burner Sold Separately)
3724.002578.87
98 MBtu
OWT-3-T-S3-W
In Stock

Williamson OWT-4-T-S3-W OWT Series 3 140,000 BTU 87% AFUE Oil-Fired Chimney Vent Water Boiler w/ Tankless Heater Coil, Taco 007, 4 Section (Burner Sold Separately)
4542.002800.71
140 MBtu
OWT-4-T-S3-W
In Stock

Williamson OWT-5-T-S3-W OWT Series 3 168,000 BTU 87% AFUE Oil-Fired Chimney Vent Water Boiler w/ Tankless Heater Coil, Taco 007, 5 Section (Burner Sold Separately)
4874.003375.24
168 MBtu
OWT-5-T-S3-W
In Stock

Williamson OWT-6-T-S3-W OWT Series 3 196,000 BTU 87% AFUE Oil-Fired Chimney Vent Water Boiler w/ Tankless Heater Coil, Taco 007, 6 Section (Burner Sold Separately)
5680.003933.40
196 MBtu
OWT-6-T-S3-W
In Stock
Qty:
Burnham Megasteam Series Boilers

Oil-Fired, Steam

Cast Iron Heat Exchanger

Chimney Vent

86% Efficiency

With Coil
Retail : $5,937.00 $4,512.12

You Save (24%)
Burnham MST288ST-HB, Megasteam, 92 Input MBtu, 86% AFUE, with Heater Hydrolevel Oil Fired Steam Boiler, Chimney Vent with Beckett Burner
5601.004256.76
92 MBtu
MST288ST-HB
Qty:
Peerless Boilers WBV Series Water II

Oil-Fired, Water

87% Efficiency

Without Burner

With Coil

Packaged
Retail : $4,574.00 $3,476.24

You Save (24%)
Peerless 1403081 WBV-E-03-WPCTL 147 Input MBtu 87.5% AFUE Oil Boiler - With Circulator, Hydrostat, and Tankless Coil - (Packaged - Burner Sold Separately)
4026.002898.72
147 MBtu
WBV-E-03-WPCTL

Peerless 1404086 WBV-e-04-WPCTL 210 Input MBtu 87% AFUE Oil Boiler - With Circulator, Hydrostat, And Tankless Coil - (Packaged - Burner Sold Separately)
4604.003314.88
210 MBtu
WBV-e-04-WPCTL
Qty:
Peerless Boilers WBV Series steam

Oil-Fired, Steam

85% Efficiency

Without Burner

With Coil

Packaged
Retail : $5,189.00 $3,943.64

You Save (24%)
Peerless 1403080 WBV-E-03-SPTL WBV Series 85.6% AFUE Steam Boiler with Circulator and Tankless Coil 147000 BTU (Packaged - Burner Sold Separately)
4568.003288.96
119 MBtu
WBV-E-03-SPTL

Peerless 1404085 WBV-E-04-SPTL WBV Series Residential Oil-Fired Steam Boiler, 210,000 BTU, 85% AFUE, Natural Draft, w/ Tankless Coil, (Packaged - Burner Sold Separately)
5163.003717.36
175 MBtu
WBV-E-04-SPTL
Qty:
Williamson OWB Oil Fired Water Boilers with Coil

Oil-Fired, Water

Cast Iron Heat Exchanger

Chimney Vent

87% Efficiency

Without Burner

With Coil

Packaged
Retail : $4,874.00 $3,375.24

You Save (31%)
Williamson OWT-3-T-S3-W OWT Series 3 98,000 BTU 87% AFUE Oil-Fired Chimney Vent Water Boiler w/ Tankless Heater Coil, Taco 007, 3 Section (Burner Sold Separately)
3724.002578.87
98 MBtu
OWT-3-T-S3-W
In Stock

Williamson OWT-4-T-S3-W OWT Series 3 140,000 BTU 87% AFUE Oil-Fired Chimney Vent Water Boiler w/ Tankless Heater Coil, Taco 007, 4 Section (Burner Sold Separately)
4542.002800.71
140 MBtu
OWT-4-T-S3-W
In Stock

Williamson OWT-5-T-S3-W OWT Series 3 168,000 BTU 87% AFUE Oil-Fired Chimney Vent Water Boiler w/ Tankless Heater Coil, Taco 007, 5 Section (Burner Sold Separately)
4874.003375.24
168 MBtu
OWT-5-T-S3-W
In Stock

Williamson OWT-6-T-S3-W OWT Series 3 196,000 BTU 87% AFUE Oil-Fired Chimney Vent Water Boiler w/ Tankless Heater Coil, Taco 007, 6 Section (Burner Sold Separately)
5680.003933.40
196 MBtu
OWT-6-T-S3-W
In Stock
Qty:
Burnham Megasteam

Oil-Fired, Steam

Cast Iron Heat Exchanger

Chimney Vent

86% Efficiency

With Coil

Packaged
Retail : $6,219.00 $4,726.44

You Save (24%)
Burnham MST513ST-MB, Megasteam, 164 Input MBtu, 86% AFUE, with Heater LWCO-M&M Oil Fired Steam Boiler, Chimney Vent with Beckett Burner
6038.004588.88
189 MBtu
MST513ST-MB
Qty:

Now Shopping by

Coil With Coil Remove This Item

Clear All

Shopping Options

By using this site you agree to our © 2025 AF Supply Corp. All Rights Reserved.