Apply to be a TradeMaster!
Filter menu expanded

Filters

2,682 items
Reset

SORT

Top Sellers
Default
Price ▲
Price ▼

Product Availability

Show In Stock Only (413)

Product Type

Boiler (139)
Boiler Part (2451)
Tankless Heater (4)
Gas Valve (1)
Ignitor (11)
Miscellaneous (22)
ABS Fitting (1)
Control Board (1)
Control Module (2)
Flame Sensor (2)
See More

Price Range

$1 to $5 (57)
$5 to $10 (64)
$10 to $15 (65)
$15 to $20 (75)
$20 to $25 (55)
$25 to $30 (83)
$30 to $35 (84)
$35 to $40 (85)
$40 to $45 (65)
$45 to $50 (48)
See More

Laars

Help Face
Need a little help?
View our Resources
2682 items
Grid
List

Resources

Articles

More About Laars

Founded in 1948, LAARS designs and manufactures high efficiency residential and commercial hydronic boilers, volume water heaters and commercial pool heaters at their Rochester NH, USA headquarters.
Questions?
MondayThursday
8am7:45pm
Friday
9am7:45pm
SaturdaySunday
9am5:45pm
Compare
Product Image of Pump Housing & Gasket, R20607600
Pump Housing & Gasket, R20607600
SKU: R20607600
Laars
SKU: R20607600
Brand: Laars
$1,140.84 each
In Stock
Get 5 by Tue, Jul 29
In Stock
Get 5 by Tue, Jul 29
Compare
Product Image of JX-75 63,000 BTU Output Mini-Therm Gas-Fired Hydronic Boiler w/ Pump (0-2,000 FT)
$2,211.34 each
In Stock
Get 4 by Fri, Aug 1 - Tue, Aug 5
In Stock
Get 4 by Fri, Aug 1 - Tue, Aug 5
Compare
Product Image of Inlet Water Temperature Sensor 1/4 NPT, RE2320600
$90.46 each
In Stock
Get 6 by Tue, Jul 29
In Stock
Get 6 by Tue, Jul 29
Compare
Product Image of Time Delay Relay (24V, 15A), RE2077700
Time Delay Relay (24V, 15A), RE2077700
SKU: RE2077700
Laars
SKU: RE2077700
Brand: Laars
$148.77 each
In Stock
Get 7 by Tue, Jul 29
In Stock
Get 7 by Tue, Jul 29
Compare
Product Image of Ignition Rod Assembly, FT2128
Ignition Rod Assembly, FT2128
SKU: FT2128
Laars
SKU: FT2128
Brand: Laars
$40.19 each
In Stock
Get 6 by Tue, Jul 29
In Stock
Get 6 by Tue, Jul 29
Compare
Product Image of MFTHW140, 129,000 BTU Output FT Series High Efficiency Wall Mount Heat Only Boiler (NG/LP)
$2,600.09 each
In Stock
Get 10 by Fri, Aug 1 - Tue, Aug 5
In Stock
Get 10 by Fri, Aug 1 - Tue, Aug 5
Compare
Product Image of Pressure Switch 1.05" WC, PR-V, R2076600
Pressure Switch 1.05" WC, PR-V, R2076600
SKU: R2076600
Laars
SKU: R2076600
Brand: Laars
$84.05 each
In Stock
Get 6 by Tue, Jul 29
In Stock
Get 6 by Tue, Jul 29
Compare
Product Image of 2-Stage Natural Gas Valve, R0407700
2-Stage Natural Gas Valve, R0407700
SKU: R0407700
Laars
SKU: R0407700
Brand: Laars
(2)
$358.79 each
In Stock
Get 9 by Tue, Jul 29
In Stock
Get 9 by Tue, Jul 29
Compare
Product Image of Condensate Neutralizer Kit, A2123601
Condensate Neutralizer Kit, A2123601
SKU: A2123601
Laars
SKU: A2123601
Brand: Laars
$103.95 each
In Stock
Get 6 by Tue, Jul 29
In Stock
Get 6 by Tue, Jul 29
Compare
Product Image of Combination Gas Valve, NG, V0079400
Combination Gas Valve, NG, V0079400
SKU: V0079400
Laars
SKU: V0079400
Brand: Laars
$165.95 each
In Stock
Get 16 by Tue, Jul 29
In Stock
Get 16 by Tue, Jul 29
Compare
Product Image of Ignition Rod Assembly FT2118
Ignition Rod Assembly FT2118
SKU: FT2118
Laars
SKU: FT2118
Brand: Laars
$46.90 each
Out of Stock
Get it by Tue, Aug 12 - Tue, Aug 19
Out of Stock
Get it by Tue, Aug 12 - Tue, Aug 19
Compare
Product Image of JX-100 84,000 BTU Output Mini-Therm Gas-Fired Hydronic Boiler w/ Pump (0-2,000 FT)
$2,217.91 each
In Stock
Get 12 by Fri, Aug 1 - Tue, Aug 5
In Stock
Get 12 by Fri, Aug 1 - Tue, Aug 5
Compare
Product Image of JX-50 42,000 BTU Output Mini-Therm Gas-Fired Hydronic Boiler w/ Pump (0-2,000 FT)
$2,014.14 each
In Stock
Get 9 by Fri, Aug 1 - Tue, Aug 5
In Stock
Get 9 by Fri, Aug 1 - Tue, Aug 5
Compare
Product Image of Control Board, JX, R2087801
Control Board, JX, R2087801
SKU: R2087801
Laars
SKU: R2087801
Brand: Laars
$242.63 each
In Stock
Get 2 by Tue, Jul 29
In Stock
Get 2 by Tue, Jul 29
Compare
Product Image of 24V Natural Gas Valve (1/2" x 3/4"), R0059100
24V Natural Gas Valve (1/2" x 3/4"), R0059100
SKU: R0059100
Laars
SKU: R0059100
Brand: Laars
(3)
$387.70 each
In Stock
Get 9 by Tue, Jul 29
In Stock
Get 9 by Tue, Jul 29
Compare
Product Image of Flow Switch Replacement, R2008400
Flow Switch Replacement, R2008400
SKU: R2008400
Laars
SKU: R2008400
Brand: Laars
(1)
$347.79 each
In Stock
Get 14 by Tue, Jul 29
In Stock
Get 14 by Tue, Jul 29
Compare
Product Image of 24V DPNO Lockout Relay, E0088400
24V DPNO Lockout Relay, E0088400
SKU: E0088400
Laars
SKU: E0088400
Brand: Laars
(2)
$89.81 each
In Stock
Get 22 by Tue, Jul 29
In Stock
Get 22 by Tue, Jul 29
Compare
Product Image of DHW Flat Plate Heat Exchanger for Endurance EBP Series, with Gasket, 2400-570
$429.56 each
In Stock
Get 9 by Tue, Jul 29
In Stock
Get 9 by Tue, Jul 29
Compare
Product Image of Pennant Burner, L0063300
Pennant Burner, L0063300
SKU: L0063300
Laars
SKU: L0063300
Brand: Laars
(1)
$77.14 each
In Stock
Get 44 by Tue, Jul 29
In Stock
Get 44 by Tue, Jul 29
Compare
Product Image of 1/4" Pilot Valve 24V (NG/LP), W0019300
1/4" Pilot Valve 24V (NG/LP), W0019300
SKU: W0019300
Laars
SKU: W0019300
Brand: Laars
$150.18 each
In Stock
Get 16 by Tue, Jul 29
In Stock
Get 16 by Tue, Jul 29
Compare
Product Image of Thermocouple Replacement, W0036500
Thermocouple Replacement, W0036500
SKU: W0036500
Laars
SKU: W0036500
Brand: Laars
(5)
$36.53 each
In Stock
Get 13 by Tue, Jul 29
In Stock
Get 13 by Tue, Jul 29
Compare
Product Image of HSI Ignitor w/ Gaskets, R0317200
HSI Ignitor w/ Gaskets, R0317200
SKU: R0317200
Laars
SKU: R0317200
Brand: Laars
(2)
$112.25 each
In Stock
Get 29 by Tue, Jul 29
In Stock
Get 29 by Tue, Jul 29
Compare
Product Image of High Limit Aquastat w/ Manual Reset, RE0015900
High Limit Aquastat w/ Manual Reset, RE0015900
SKU: RE0015900
Laars
SKU: RE0015900
Brand: Laars
$244.22 each
In Stock
Get 15 by Tue, Jul 29
In Stock
Get 15 by Tue, Jul 29
Compare
Product Image of Seal Kit, Pump, A2123409
Seal Kit, Pump, A2123409
SKU: A2123409
Laars
SKU: A2123409
Brand: Laars
$96.25 each
In Stock
Get 4 by Tue, Jul 29
In Stock
Get 4 by Tue, Jul 29
Compare
Product Image of Burner Gasket, Lytherm, S2104300
Burner Gasket, Lytherm, S2104300
SKU: S2104300
Laars
SKU: S2104300
Brand: Laars
$14.35 each
In Stock
Get 59 by Tue, Jul 29
In Stock
Get 59 by Tue, Jul 29
Compare
Product Image of Front Refractory Tile, RT2109001
Front Refractory Tile, RT2109001
SKU: RT2109001
Laars
SKU: RT2109001
Brand: Laars
$106.13 each
In Stock
Get 36 by Tue, Jul 29
In Stock
Get 36 by Tue, Jul 29
Compare
Product Image of Burner w/ Pilot Bracket, L0056500
Burner w/ Pilot Bracket, L0056500
SKU: L0056500
Laars
SKU: L0056500
Brand: Laars
$47.86 each
In Stock
Get 3 by Tue, Jul 29
In Stock
Get 3 by Tue, Jul 29
Compare
Product Image of Pilot Burner Assembly, R2085500
Pilot Burner Assembly, R2085500
SKU: R2085500
Laars
SKU: R2085500
Brand: Laars
$373.33 each
In Stock
Get 16 by Tue, Jul 29
In Stock
Get 16 by Tue, Jul 29
Compare
Product Image of Combustion Air Blower for NTH/NTV 399-500, RA2113100
$1,425.62 each
In Stock
Get 8 by Tue, Jul 29
In Stock
Get 8 by Tue, Jul 29
Compare
Product Image of Ignitor Spark MGT, RW2014100
Ignitor Spark MGT, RW2014100
SKU: RW2014100
Laars
SKU: RW2014100
Brand: Laars
$219.02 each
In Stock
Get 7 by Tue, Jul 29
In Stock
Get 7 by Tue, Jul 29
Compare
Product Image of Ignition Module 4secTFI, RE2107300
Ignition Module 4secTFI, RE2107300
SKU: RE2107300
Laars
SKU: RE2107300
Brand: Laars
$516.38 each
In Stock
Get 5 by Tue, Jul 29
In Stock
Get 5 by Tue, Jul 29
Compare
Product Image of Flame Sensor, RW2014900
Flame Sensor, RW2014900
SKU: RW2014900
Laars
SKU: RW2014900
Brand: Laars
$166.73 each
In Stock
Get 10 by Tue, Jul 29
In Stock
Get 10 by Tue, Jul 29
Compare
Product Image of 182,000 BTU Output FT Series High Efficiency, Floor Standing Combi Boiler Fire Tube Boiler (NG or LP)
$3,952.29 each
In Stock
Get 2 by Fri, Aug 1 - Tue, Aug 5
In Stock
Get 2 by Fri, Aug 1 - Tue, Aug 5
Compare
Product Image of Rear Refractory Tile, R50D2021
Rear Refractory Tile, R50D2021
SKU: R50D2021
Laars
SKU: R50D2021
Brand: Laars
$102.95 each
In Stock
Get 6 by Tue, Jul 29
In Stock
Get 6 by Tue, Jul 29
Compare
Product Image of 50 Gallon Laars-Stor Stainless Steel Single-Wall Indirect Water Heater
$1,710.18 each
In Stock
Get 9 by Fri, Aug 1 - Tue, Aug 5
In Stock
Get 9 by Fri, Aug 1 - Tue, Aug 5
Compare
Product Image of JX-125 105,000 BTU Output Mini-Therm Gas-Fired Hydronic Boiler w/ Low Loss Header & Pump Assembly (0-2,000 FT)
$2,693.13 each
In Stock
Get 10 by Fri, Aug 1 - Tue, Aug 5
In Stock
Get 10 by Fri, Aug 1 - Tue, Aug 5
Compare
Product Image of Low Loss Header Kit, CA019600
Low Loss Header Kit, CA019600
SKU: CA019600
Laars
SKU: CA019600
Brand: Laars
$481.14 each
In Stock
Get 3 by Tue, Jul 29
In Stock
Get 3 by Tue, Jul 29
Compare
Product Image of Flange Gasket Replacement, S0076500
Flange Gasket Replacement, S0076500
SKU: S0076500
Laars
SKU: S0076500
Brand: Laars
$13.76 each
In Stock
Get 19 by Tue, Jul 29
In Stock
Get 19 by Tue, Jul 29
Compare
Product Image of Mascot FT/ST Cascade Communication Cable, FT1861
$16.25 each
In Stock
Get 12 by Tue, Jul 29
In Stock
Get 12 by Tue, Jul 29
Compare
Product Image of 3 Way Valve Assembly, FT2071
3 Way Valve Assembly, FT2071
SKU: FT2071
Laars
SKU: FT2071
Brand: Laars
$63.60 each
In Stock
Get 3 by Tue, Jul 29
In Stock
Get 3 by Tue, Jul 29
Compare
Product Image of Ignition Module Replacement, E2102800
Ignition Module Replacement, E2102800
SKU: E2102800
Laars
SKU: E2102800
Brand: Laars
(1)
$258.80 each
In Stock
Get 10 by Tue, Jul 29
In Stock
Get 10 by Tue, Jul 29
Compare
Product Image of Inducer Blower Assembly, RE0254000
Inducer Blower Assembly, RE0254000
SKU: RE0254000
Laars
SKU: RE0254000
Brand: Laars
$530.68 each
In Stock
Get 5 by Tue, Jul 29
In Stock
Get 5 by Tue, Jul 29
Compare
Product Image of Control Board, R2080607
Control Board, R2080607
SKU: R2080607
Laars
SKU: R2080607
Brand: Laars
$253.36 each
In Stock
Get 2 by Tue, Jul 29
In Stock
Get 2 by Tue, Jul 29
Compare
Product Image of 3-Position Toggle Switch, Mighty Therm, R2007700
$98.83 each
In Stock
Get 6 by Tue, Jul 29
In Stock
Get 6 by Tue, Jul 29
Compare
Product Image of Media Filter, R2073200
Media Filter, R2073200
SKU: R2073200
Laars
SKU: R2073200
Brand: Laars
$72.15 each
In Stock
Get 7 by Tue, Jul 29
In Stock
Get 7 by Tue, Jul 29
Compare
Product Image of Natural Gas Pilot Assembly, RW2001800
Natural Gas Pilot Assembly, RW2001800
SKU: RW2001800
Laars
SKU: RW2001800
Brand: Laars
$224.89 each
In Stock
Get 8 by Tue, Jul 29
In Stock
Get 8 by Tue, Jul 29
Compare
Product Image of 182,000 BTU Output FT Series High Efficiency, Floor Standing Heat Only Fire Tube Boiler (NG or LP)
$3,643.28 each
In Stock
Get 4 by Fri, Aug 1 - Tue, Aug 5
In Stock
Get 4 by Fri, Aug 1 - Tue, Aug 5
Compare
Product Image of Hot Surface Igniter, 2400-046
Hot Surface Igniter, 2400-046
SKU: 2400-046
Laars
SKU: 2400-046
Brand: Laars
(2)
$97.36 each
In Stock
Get 6 by Tue, Jul 29
In Stock
Get 6 by Tue, Jul 29
Resources
FAQs, Manuals & Videos
Articles
More About Laars
Founded in 1948, LAARS designs and manufactures high efficiency residential and commercial hydronic boilers, volume water heaters and commercial pool heaters at their Rochester NH, USA headquarters.
Filter & Sort
2,682 items
Reset

SORT

Top Sellers
Default
Price ▲
Price ▼

Product Availability

Show In Stock Only (413)

Product Type

Boiler (139)
Boiler Part (2451)
Tankless Heater (4)
Gas Valve (1)
Ignitor (11)
Miscellaneous (22)
ABS Fitting (1)
Control Board (1)
Control Module (2)
Flame Sensor (2)
See More

Price Range

$1 to $5 (57)
$5 to $10 (64)
$10 to $15 (65)
$15 to $20 (75)
$20 to $25 (55)
$25 to $30 (83)
$30 to $35 (84)
$35 to $40 (85)
$40 to $45 (65)
$45 to $50 (48)
See More
Clear All