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

Toggle Nav

Search

We ship to most places in continental USA

Chat with us

Need help

Our Locations

Home
HVAC
Boilers

Boilers

Water X

Mbtu

Fuel Type

Medium

Water
Steam

Brands

Saint Roch SRU Boiler without Coil

Oil-Fired, Water

Cast Iron Heat Exchanger

Direct Vent

87% Efficiency

Without Coil
Retail : $4,337.00 $3,157.34

You Save (27%)
Saint Roch SRU30/WL Oil Fired 140 Input Mbtu Water Boiler 87% AFUE, Includes Burner and Trim (Knockdown Boiler- Assembly is required, Coil Sold Separately)
4337.003157.34
140 MBtu
SRU30/WL
In Stock

Saint Roch SRU40/WL Oil Fired 175 Input Mbtu Water Boiler 87% AFUE, Includes Burner and Trim (Knockdown Boiler- Assembly is required, Coil Sold Separately)
4781.003480.57
175 MBtu
SRU40/WL
In Stock

Saint Roch SRU50/WL Oil Fired 210 Input Mbtu Water Boiler 87% AFUE, Includes Burner and Trim (Knockdown Boiler- Assembly is required, Coil Sold Separately)
5307.003863.50
210 MBtu
SRU50/WL
In Stock

Saint Roch SRU60/WL Oil Fired 245 Input Mbtu Water Boiler 87% AFUE, Includes Burner and Trim (Knockdown Boiler- Assembly is required, Coil Sold Separately)
5730.004171.44
245 MBtu
SRU60/WL
In Stock
Qty:
Laars Mini Therm JX Series Gas-Fired Boilers

Gas, Water

Cast Iron Heat Exchanger

84% Efficiency

With Pump
Retail : $4,762.00 $2,571.48

You Save (46%)
Laars JX125NLXU1 M/Therm 125 Input MBtu - 84% AFUE Hydronic & Pump Assembly Low Loss Header Ft Natural Gas-Fired Boiler - Altitude 0-2000
4471.002414.34
125 MBtu
JX125NLXU1
In Stock

Laars JX150NLXU1 M/Therm 150 Input MBtu - 84% AFUE Hydronic & Pump Assembly Low Loss Header Ft Natural Gas-Fired Boiler - Altitude 0-2000
4762.002571.48
150 MBtu
JX150NLXU1
In Stock

Laars JX200NLXU1 M/Therm 199 Input MBtu - 97% AFUE Hydronic & Pump Assembly Low Loss Header Ft Natural Gas-Fired Boiler - Altitude 0-2000
5760.003110.40
199 MBtu
JX200NLXU1
Qty:
Laars Mighty Therm2 Series Hydronic Boilers

Gas, Water

Cast Iron Heat Exchanger

85% Efficiency

With Pump
Retail : $22,847.00 $17,135.25

You Save (25%)
Laars MT2H-500 Mighty Therm2 MT2H0500NACK1CJN Commercial 500,000 BTU 85% AFUE Natural Gas Water Boiler with Pump
20404.0015303.00
500 MBtu
MT2H-500
In Stock

Laars MT2H-750 Mighty Therm2 MT2H0750NACK1CJN Commercial 750,000 BTU 85% AFUE Natural Gas Water Boiler with Pump
22847.0017135.25
750 MBtu
MT2H-750
In Stock

Laars MT2H-1250 Mighty Therm2 MT2H1250NACK1CJN Commercial 1,250,000 BTU 85% AFUE Natural Gas Water Boiler with Pump
30229.0022671.75
1250 MBtu
MT2H-1250

Laars MT2H-1500 Mighty Therm2 1,500 Input MBtu 85% AFUE Hydronic Boiler
35146.0026359.50
1500 MBtu
MT2H-1500
In Stock
Qty:
Green Mountain GMGW Series Boilers

Gas, Water

Cast Iron Heat Exchanger

Vertical Vent

84% Efficiency
Retail : $5,221.00 $3,216.14

You Save (38%)
Green Mountain 15B306003710304 GMGW-K 59 Input MBtu - 84% AFUE Natural Gas-Fired Water Boiler - Vertical Vent
2952.001818.43
59 MBtu
GMGW-060K
In Stock

Green Mountain 15B409503710304 GMGW-K 92 Input MBtu - 84% AFUE Natural Gas-Fired Water Boiler - Vertical Vent
3232.001990.91
92 MBtu
GMGW-095K
In Stock

Green Mountain 15B512003710304 GMGW-K 120 Input MBtu - 84% AFUE Natural Gas-Fired Water Boiler-Vertical Vent
3472.002138.75
120 MBtu
GMGW-120K
In Stock

Green Mountain 15B615003710304 GMGW-K 149 Input MBtu - 84% AFUE Natural Gas-Fired Water Boiler - Vertical Vent
3877.002388.23
149 MBtu
GMGW-150K
In Stock

Green Mountain 15B717503710304 GMGW-K 175 Input MBtu - 84% AFUE Natural Gas-Fired Water Boiler-Vertical Vent
4268.002629.09
175 MBtu
GMGW-175K
In Stock

Green Mountain 15B820503710304 GMGW-K 205 Input MBtu - 84% AFUE Natural Gas-Fired Water Boiler - Vertical Vent
4796.002954.34
205 MBtu
GMGW-205K
In Stock

Green Mountain 15B923503710304 GMGW-K 235 Input MBtu - 84% AFUE Natural Gas-Fired Water Boiler - Vertical Vent
5221.003216.14
235 MBtu
GMGW-235K
In Stock
Qty:
Burnham Alta Series Heat Only Boilers

Gas, Water

Stainless Steel Heat Exchanger

Direct Vent

95% Efficiency

Heat Only

With Pump
Retail : $3,503.00 $2,662.28

You Save (24%)
Burnham ALTA-120-1G02 97 Input MBtu - 95% AFUE - Gas Boiler - Heating Models Stainless Steel Heat Exchanger - Direct Vent
3112.002365.12
97 MBtu
ALTA-120-1G02
In Stock

Burnham ALTA-150-1G02 123 Input MBtu - 95% AFUE - Gas Boiler - Heating Models Stainless Steel Heat Exchanger - Direct Vent
3378.002567.28
123 MBtu
ALTA-150-1G02
In Stock

Burnham ALTA-180-1G02 147 Input MBtu - 95% AFUE - Gas Boiler - Heating Models Stainless Steel Heat Exchanger - Direct Vent
3503.002662.28
147 MBtu
ALTA-180-1G02
In Stock
Qty:
Green Mountain GMGW-D

Gas, Water

Cast Iron Heat Exchanger

84% Efficiency
Retail : $6,143.00 $3,784.09

You Save (38%)
Green Mountain 15C826203210304 GMGW-D 262 Input MBtu 84% AFUE Natural Gas Hot Water Boiler - Chimney or Sidewall Vent
5815.003582.04
262 MBtu
GMGW-8D
In Stock

Green Mountain 15C929903210304 GMGW-D 299 Input MBtu 84% AFUE Natural Gas Hot Water Boiler - Chimney or Sidewall Vent
6143.003784.09
299 MBtu
GMGW-9D
In Stock
Qty:
Peerless Boilers WBV Series Water

Oil-Fired, Water

87% Efficiency

Without Burner

Knockdown(Assembly required)
Retail : $4,384.00 $3,156.48

You Save (28%)
Peerless 1305036 WBV-E-05-W 245 Input MBtu - 86% AFUE - Residential Oil-Fired Water Boiler - (Knockdown - Burner Sold Separately)
5255.003783.60
245 MBtu
WBV-E-05-W
In Stock

Peerless 1403082 WBV-E-03-W 119 Input MBtu - 87% AFUE - Residential Oil-Fired Water Boiler - (Knockdown - Burner Sold Separately)
3696.002661.12
119 MBtu
WBV-E-03-W
In Stock

Peerless 1404087 WBV-E-04-W 175 Input MBtu - 87% AFUE - Residential Oil-Fired Water Boiler - (Knockdown - Burner Sold Separately)
4384.003156.48
175 MBtu
WBV-E-04-W
In Stock
Qty:
Lochinvar Knight Fire Tube Series Boilers (Wall Mount)

Gas, Water

Stainless Steel Heat Exchanger

Direct Vent

95 % Efficiency
Retail : $15,565.00 $11,642.62

You Save (25%)
Lochinvar WHB055N Knight Fire Tube 55 Input MBtu - 95% AFUE Residential Condensing Natural Gas Water Boiler - Wall Mount - Direct Vent
5536.004140.93
55 MBtu
WHB055N
In Stock

Lochinvar WHB085N Knight Fire Tube 85 Input MBtu - 95% AFUE Residential Condensing Natural Gas Water Boiler - Wall Mount - Direct Vent
5756.004305.49
85 MBtu
WHB085N
In Stock

Lochinvar WHB110N Knight Fire Tube 110 Input MBtu - 95% AFUE Residential Condensing Natural Gas Water Boiler - Wall Mount - Direct Vent
5973.004467.80
110 MBtu
WHB110N
In Stock

Lochinvar WHB155N Knight Fire Tube 155 Input MBtu - 95% AFUE Residential Condensing Natural Gas Water Boiler - Wall Mount - Direct Vent
7171.005363.91
155 MBtu
WHB155N
In Stock

Lochinvar WHB199N KNIGHT Fire Tube 199 Input MBtu - 95% AFUE - Residential Condensing Natural Gas Water Boiler - Wall Mount - Direct Vent
8559.006402.13
199 MBtu
WHB199N
In Stock

Lochinvar WHB285N Knight Fire Tube 285 Input MBtu 95% AFUE Residential Condensing Natural Gas Water Boiler - Wall Mount - Direct Vent
11815.008837.62
285 MBtu
WHB285N
In Stock

Lochinvar WHB399N Knight Fire Tube 399 Input MBtu 95% AFUE Residential Condensing Natural Gas Water Boiler - Wall Mount - Direct Vent
15565.0011642.62
399 MBtu
WHB399N
In Stock
Qty:
Lochinvar Knight Fire Tube Series Boilers (Floor Standing)

Gas, Water

Stainless Steel Heat Exchanger

Direct Vent

95% Efficiency
Retail : $11,815.00 $8,837.62

You Save (25%)
Lochinvar KHB085N Knight Fire Tube 85 Input MBtu - 95% AFUE Residential Condensing Natural Gas Water Boiler - Floor Mount - Direct Vent
5756.004305.49
85 MBtu
KHB085N
In Stock

Lochinvar KHB110N Knight Fire Tube 110 Input MBtu - 95% AFUE Residential Condensing Natural Gas Water Boiler - Floor Mount - Direct Vent
5973.004467.80
110 MBtu
KHB110N
In Stock

Lochinvar KHB155N Knight Fire Tube 155 Input MBtu - 95% AFUE Residential Condensing Natural Gas Water Boiler - Floor Mount - Direct Vent
7171.005363.91
155 MBtu
KHB155N
In Stock

Lochinvar KHB199N Knight Fire Tube 199 Input MBtu - 95% AFUE Residential Condensing Natural Gas Water Boiler - Floor Mount - Direct Vent
8559.006402.13
199 MBtu
KHB199N
In Stock

Lochinvar KHB285N Knight Fire Tube 285 Input MBtu - 95% AFUE Residential Condensing Natural Gas Water Boiler - Floor Mount - Direct Vent
11815.008837.62
285 MBtu
KHB285N
In Stock
Qty:
Peerless Boilers EC(T) Series (Water)

Oil-Fired, Water

Cast Iron Heat Exchanger

Natural Draft

86% Efficiency

Without Burner

Knockdown(Assembly required)
Retail : $5,742.00 $4,134.24

You Save (28%)
Peerless 1604032 ECT-E-04-W 210 Input MBtu - 86% AFUE - Residential Oil-Fired Water Boiler - Natural Draft - (Knockdown - Burner Sold Separately)
5742.004134.24
210 MBtu
ECT-E-04-W
In Stock

Peerless 1605007 ECT-e-05-W 280 Input MBtu - 86% AFUE - Residential Oil-Fired Water Boiler Natural Draft - (Knockdown - Burner Sold Separately)
6911.004975.92
280 MBtu
ECT-e-05-W
In Stock

Peerless 1606100 ECT-06-W 385 Input MBtu, 85.2% AFUE - Residential Oil-Fired Water Boiler - Natural Draft (Knockdown - Burner Sold Separately)
8161.005875.92
420 MBtu
ECT-06-W
In Stock
Qty:
Peerless EC Series Water

Oil-Fired, Water

Cast Iron Heat Exchanger

Natural Draft

86% Efficiency

Without Burner

Knockdown(Assembly required)
Retail : $7,024.00 $5,057.28

You Save (28%)
Peerless 1503007 EC-E-03-W 140 Input MBtu - 86% AFUE - Residential Oil-Fired Water Boiler - Natural Draft - (Knockdown - Burner Sold Separately)
4663.003357.36
140 MBtu
EC-E-03-W
In Stock

Peerless 1505015 EC-E-05-W 280 Input MBtu - 86% AFUE - Residential Oil-Fired Water Boiler Natural Draft - (Knockdown - Burner Sold Separately)
7024.005057.28
280 MBtu
EC-E-05-W
In Stock
Qty:
Peerless Boilers EC(T)

Oil-Fired, Water

Cast Iron Heat Exchanger

86% Efficiency

With Burner

Knockdown(Assembly required)
Retail : $7,133.00 $5,135.76

You Save (28%)
Peerless Boilers 1604016 ECT-e-04-WU-AFG-1S Water Knockdown Boiler 210 Input MBtu 86% AFUE Oil With Burner
5815.044186.83
210 MBtu
Qty:
Peerless Boilers EC

Oil-Fired, Water

Cast Iron Heat Exchanger

86% Efficiency

With Burner

Knockdown(Assembly required)
Retail : $8,420.00 $4,976.02

You Save (41%)
Peerless 1503011 EC 140 Input MBtu - 87% AFUE Residential Oil-Fired Water Boiler - With Burner - Natural Draft(Knockdown assembly required)
4929.233549.05
140 MBtu

Peerless 1505016 EC 280 Input MBtu - 86% AFUE Residential Oil-Fired Water Boiler - Without Burner - Natural Draft(Knockdown assembly required)
6865.314943.02
280 MBtu
Qty:
Peerless Boilers WBV Series

Oil-Fired, Water

Natural Draft

86% Efficiency

With Burner

Knockdown(Assembly required)
Retail : $6,380.00 $4,593.60

You Save (28%)
Peerless 1305037 WBV-e-05-WU-AFG 245 Input MBtu - 86% AFUE - Residential Oil-Fired Water Boiler - Natural Draft with Burner - (Knockdown assembly required)
6076.004374.72
245 MBtu
WBV-e-05-WU-AFG
In Stock
Qty:
Peerless EC Series Oil-Fired Boiler

Oil-Fired, Water

Cast Iron Heat Exchanger

Natural Draft

86% Efficiency

With Burner

Knockdown(Assembly required)
Retail : $8,309.00 $5,982.48

You Save (28%)
Peerless 1605008 ECT-E-05-WU 280 Input MBtu - 86% AFUE - Residential Oil-Fired Water Boiler Natural Draft with Burner - (Knockdown assembly required)
7623.005488.56
280 MBtu
ECT-E-05-WU
In Stock
Qty:
IBC Condensing Boilers HC Series

Gas, Water

Aluminum Heat Exchanger

Direct Vent

95% Efficiency
Retail : $4,054.00 $2,572.26

You Save (37%)
IBC Technologies 012-006 HC Series 125 Input Mbtu 95% AFUE High Efficiency Condensing Boiler
3911.002481.53
125 MBtu
012-006

IBC Technologies HC33-160 Condensing Boiler 160 Input MBH, AFUE 95%, Direct Vent, Natural Gas
4054.002572.26
160 MBtu
HC33-160
In Stock
Qty:
IBC Condensing Boilers G3 SL Series Propane

Liquid Propane, Water

Stainless Steel Heat Exchanger

Direct Vent

96% Efficiency
Retail : $14,785.00 $9,381.08

You Save (37%)
IBC Technologies 010-071 SL 260 Input MBtu - 96% AFUE Condensing Liquid Propane Gas Boiler - Direct Vent
9164.005814.56
260 MBtu
SL-300
In Stock

IBC Technologies 010-087 SL 399 Input MBtu - 96% AFUE Condensing Liquid Propane Gas Boiler - Direct Vent
14785.009381.08
399 MBtu
SL-400
In Stock
Qty:

Now Shopping by

System Type Water Remove This Item

Clear All

Shopping Options

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