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 Flame Detector Sensor, FT1327
Flame Detector Sensor, FT1327
SKU: FT1327
Laars
SKU: FT1327
Brand: Laars
$39.66 each
In Stock
Get 3 by Tue, Jul 29
In Stock
Get 3 by Tue, Jul 29
Compare
Product Image of LT Series 199,000 BTU Ultra Low NOx Tankless Residential Water Heater (Natural Gas)
$1,425.08 each
In Stock
Get 10 by Tue, Jul 29
In Stock
Get 10 by Tue, Jul 29
Compare
Product Image of Natural Gas Pilot Assembly, W0040900
Natural Gas Pilot Assembly, W0040900
SKU: W0040900
Laars
SKU: W0040900
Brand: Laars
(2)
$113.53 each
In Stock
Get 7 by Tue, Jul 29
In Stock
Get 7 by Tue, Jul 29
Compare
Product Image of JX-150 134,400 BTU Output Mini-Therm Gas-Fired Hydronic Boiler w/ Low Loss Header & Pump Assembly (0-2,000 FT)
$2,652.99 each
In Stock
Get 6 by Fri, Aug 1 - Tue, Aug 5
In Stock
Get 6 by Fri, Aug 1 - Tue, Aug 5
Compare
Product Image of Pressure Switch Replacement, 2400-228
Pressure Switch Replacement, 2400-228
SKU: 2400-228
Laars
SKU: 2400-228
Brand: Laars
(1)
$86.86 each
In Stock
Get 22 by Tue, Jul 29
In Stock
Get 22 by Tue, Jul 29
Compare
Product Image of Ignitor Gasket, FT1316
Ignitor Gasket, FT1316
SKU: FT1316
Laars
SKU: FT1316
Brand: Laars
$42.87 each
In Stock
Get 2 by Tue, Jul 29
In Stock
Get 2 by Tue, Jul 29
Compare
Product Image of Ventor Motor Assembly
Ventor Motor Assembly
SKU: 2400-524
Laars
SKU: 2400-524
Brand: Laars
(2)
$641.39 each
In Stock
Get 3 by Tue, Jul 29
In Stock
Get 3 by Tue, Jul 29
Compare
Product Image of Transformer, 120-24V, 40VA, R0021300
Transformer, 120-24V, 40VA, R0021300
SKU: R0021300
Laars
SKU: R0021300
Brand: Laars
(2)
$136.75 each
In Stock
Get 6 by Tue, Jul 29
In Stock
Get 6 by Tue, Jul 29
Compare
Product Image of Liquid Propane Pilot Assembly, W0039600
Liquid Propane Pilot Assembly, W0039600
SKU: W0039600
Laars
SKU: W0039600
Brand: Laars
$77.86 each
In Stock
Get 6 by Tue, Jul 29
In Stock
Get 6 by Tue, Jul 29
Compare
Product Image of Pump Housing Gasket, S0024600
Pump Housing Gasket, S0024600
SKU: S0024600
Laars
SKU: S0024600
Brand: Laars
(1)
$42.39 each
In Stock
Get 16 by Tue, Jul 29
In Stock
Get 16 by Tue, Jul 29
Compare
Product Image of Air Pressure Switch For Neotherm, RE2334700
Air Pressure Switch For Neotherm, RE2334700
SKU: RE2334700
Laars
SKU: RE2334700
Brand: Laars
$71.91 each
In Stock
Get 15 by Tue, Jul 29
In Stock
Get 15 by Tue, Jul 29
Compare
Product Image of Main Burner Kit - 10 Pack, RL0052300
Main Burner Kit - 10 Pack, RL0052300
SKU: RL0052300
Laars
SKU: RL0052300
Brand: Laars
$161.58 each
In Stock
Get 7 by Tue, Jul 29
In Stock
Get 7 by Tue, Jul 29
Compare
Product Image of 3-Cell Burner Door Gasket, R2069400
3-Cell Burner Door Gasket, R2069400
SKU: R2069400
Laars
SKU: R2069400
Brand: Laars
$73.94 each
In Stock
Get 4 by Tue, Jul 29
In Stock
Get 4 by Tue, Jul 29
Compare
Product Image of 1-Stage Spark Ignition Natural Gas Valve, R0385100
$252.71 each
In Stock
Get 6 by Tue, Jul 29
In Stock
Get 6 by Tue, Jul 29
Compare
Product Image of Pilot Assembly, R20607400
Pilot Assembly, R20607400
SKU: R20607400
Laars
SKU: R20607400
Brand: Laars
$256.89 each
In Stock
Get 9 by Tue, Jul 29
In Stock
Get 9 by Tue, Jul 29
Compare
Product Image of Gas Valve Replacement, 2400-548
Gas Valve Replacement, 2400-548
SKU: 2400-548
Laars
SKU: 2400-548
Brand: Laars
$311.45 each
In Stock
Get 3 by Tue, Jul 29
In Stock
Get 3 by Tue, Jul 29
Compare
Product Image of Mascot System Sensor, FT1868
Mascot System Sensor, FT1868
SKU: FT1868
Laars
SKU: FT1868
Brand: Laars
$69.33 each
In Stock
Get 3 by Tue, Jul 29
In Stock
Get 3 by Tue, Jul 29
Compare
Product Image of 75 Gallon Laars-Stor Single-Wall Indirect Water Heater LS-SW-2-80-L
$2,267.52 each
In Stock
Get 7 by Fri, Aug 1 - Tue, Aug 5
In Stock
Get 7 by Fri, Aug 1 - Tue, Aug 5
Compare
Product Image of 5" Vent Damper Assembly (24V), RE2071502
5" Vent Damper Assembly (24V), RE2071502
SKU: RE2071502
Laars
SKU: RE2071502
Brand: Laars
$314.61 each
In Stock
Get 15 by Tue, Jul 29
In Stock
Get 15 by Tue, Jul 29
Compare
Product Image of Control Board, R2080601
Control Board, R2080601
SKU: R2080601
Laars
SKU: R2080601
Brand: Laars
$379.12 each
Backorder
Get it by Tue, Aug 26 - Wed, Sep 24
Backorder
Get it by Tue, Aug 26 - Wed, Sep 24
Compare
Product Image of 5/8" Gasket Kit (20pcs), R0050801
5/8" Gasket Kit (20pcs), R0050801
SKU: R0050801
Laars
SKU: R0050801
Brand: Laars
$75.58 each
In Stock
Get 10 by Tue, Jul 29
In Stock
Get 10 by Tue, Jul 29
Compare
Product Image of Thermistor Probe, E0253900
Thermistor Probe, E0253900
SKU: E0253900
Laars
SKU: E0253900
Brand: Laars
$68.98 each
In Stock
Get 7 by Tue, Jul 29
In Stock
Get 7 by Tue, Jul 29
Compare
Product Image of JX-75 63,000 BTU Output Mini-Therm Gas-Fired Hydronic Boiler (0-2,000 FT)
$2,024.39 each
In Stock
Get 6 by Fri, Aug 1 - Tue, Aug 5
In Stock
Get 6 by Fri, Aug 1 - Tue, Aug 5
Compare
Product Image of Blocked Vent Switch, R2061100
Blocked Vent Switch, R2061100
SKU: R2061100
Laars
SKU: R2061100
Brand: Laars
$107.69 each
In Stock
Get 7 by Tue, Jul 29
In Stock
Get 7 by Tue, Jul 29
Compare
Product Image of Control Board, R2080610
Control Board, R2080610
SKU: R2080610
Laars
SKU: R2080610
Brand: Laars
$344.59 each
In Stock
Get 6 by Tue, Jul 29
In Stock
Get 6 by Tue, Jul 29
Compare
Product Image of Flow Switch Replacement, R2028200
Flow Switch Replacement, R2028200
SKU: R2028200
Laars
SKU: R2028200
Brand: Laars
(4)
$491.58 each
In Stock
Get 21 by Tue, Jul 29
In Stock
Get 21 by Tue, Jul 29
Compare
Product Image of UP26-99F, Circulator Pump, 1/6 HP, 115 volt, 2400-386
$761.22 each
In Stock
Get 8 by Tue, Jul 29
In Stock
Get 8 by Tue, Jul 29
Compare
Product Image of Limit Switch, 140/240F, R0061300
Limit Switch, 140/240F, R0061300
SKU: R0061300
Laars
SKU: R0061300
Brand: Laars
$168.64 each
In Stock
Get 6 by Tue, Jul 29
In Stock
Get 6 by Tue, Jul 29
Compare
Product Image of Burner Gasket, RS2108500
Burner Gasket, RS2108500
SKU: RS2108500
Laars
SKU: RS2108500
Brand: Laars
$60.05 each
In Stock
Get 3 by Tue, Jul 29
In Stock
Get 3 by Tue, Jul 29
Compare
Product Image of 30 Gallon Laars-Stor Single-Wall Indirect Water Heater LS-SW-2-30-L
$1,381.23 each
In Stock
Get 8 by Fri, Aug 1 - Tue, Aug 5
In Stock
Get 8 by Fri, Aug 1 - Tue, Aug 5
Compare
Product Image of Header, Inlet/outlet, R10364504
Header, Inlet/outlet, R10364504
SKU: R10364504
Laars
SKU: R10364504
Brand: Laars
$483.55 each
In Stock
Get 7 by Tue, Jul 29
In Stock
Get 7 by Tue, Jul 29
Compare
Product Image of Anti-Condensing Valve Kit, 2400-451
Anti-Condensing Valve Kit, 2400-451
SKU: 2400-451
Laars
SKU: 2400-451
Brand: Laars
(1)
$292.10 each
In Stock
Get 2 by Tue, Jul 29
In Stock
Get 2 by Tue, Jul 29
Compare
Product Image of Pilot Assembly, R10526400
Pilot Assembly, R10526400
SKU: R10526400
Laars
SKU: R10526400
Brand: Laars
$369.91 each
In Stock
Get 8 by Tue, Jul 29
In Stock
Get 8 by Tue, Jul 29
Compare
Product Image of Low Gas Pressure Switch, R2004100
Low Gas Pressure Switch, R2004100
SKU: R2004100
Laars
SKU: R2004100
Brand: Laars
$254.19 each
In Stock
Get 3 by Tue, Jul 29
In Stock
Get 3 by Tue, Jul 29
Compare
Product Image of Outlet Sensor, E2366900
Outlet Sensor, E2366900
SKU: E2366900
Laars
SKU: E2366900
Brand: Laars
$118.76 each
In Stock
Get 3 by Tue, Jul 29
In Stock
Get 3 by Tue, Jul 29
Compare
Product Image of Spark Ignitor for Mascot LX, W2014200
Spark Ignitor for Mascot LX, W2014200
SKU: W2014200
Laars
SKU: W2014200
Brand: Laars
$61.78 each
In Stock
Get 5 by Tue, Jul 29
In Stock
Get 5 by Tue, Jul 29
Compare
Product Image of Display, Touch Control, E2339800
Display, Touch Control, E2339800
SKU: E2339800
Laars
SKU: E2339800
Brand: Laars
$1,326.14 each
In Stock
Get 8 by Tue, Jul 29
In Stock
Get 8 by Tue, Jul 29
Compare
Product Image of Gasket for Flame Sensor, RW2013400
Gasket for Flame Sensor, RW2013400
SKU: RW2013400
Laars
SKU: RW2013400
Brand: Laars
$66.89 each
In Stock
Get 4 by Tue, Jul 29
In Stock
Get 4 by Tue, Jul 29
Compare
Product Image of Front Tile, 7-Holes, T2017100
Front Tile, 7-Holes, T2017100
SKU: T2017100
Laars
SKU: T2017100
Brand: Laars
$82.47 each
In Stock
Get 1 by Tue, Jul 29
In Stock
Get 1 by Tue, Jul 29
Compare
Product Image of Wet End Pump, A2123419
Wet End Pump, A2123419
SKU: A2123419
Laars
SKU: A2123419
Brand: Laars
$742.63 each
In Stock
Get 3 by Tue, Jul 29
In Stock
Get 3 by Tue, Jul 29
Compare
Product Image of 24V Single Try Ignition Module, E2305400
24V Single Try Ignition Module, E2305400
SKU: E2305400
Laars
SKU: E2305400
Brand: Laars
$305.09 each
In Stock
Get 19 by Tue, Jul 29
In Stock
Get 19 by Tue, Jul 29
Compare
Product Image of Ignition Control, 24V, 2400-441
Ignition Control, 24V, 2400-441
SKU: 2400-441
Laars
SKU: 2400-441
Brand: Laars
$471.53 each
In Stock
Get 2 by Tue, Jul 29
In Stock
Get 2 by Tue, Jul 29
Compare
Product Image of 40 Gallon Laars-Stor Single-Wall Indirect Water Heater
40 Gallon Laars-Stor Single-Wall Indirect Water Heater
SKU: LS-SW-2-40R-L
Laars
SKU: LS-SW-2-40R-L
Brand: Laars
$1,490.30 each
In Stock
Get 5 by Mon, Aug 4 - Thu, Aug 7
In Stock
Get 5 by Mon, Aug 4 - Thu, Aug 7
Compare
Product Image of Front Tile, 5-Hole, T2016800
Front Tile, 5-Hole, T2016800
SKU: T2016800
Laars
SKU: T2016800
Brand: Laars
$56.93 each
In Stock
Get 3 by Tue, Jul 29
In Stock
Get 3 by Tue, Jul 29
Compare
Product Image of Rear Bottom Tile, T2017400
Rear Bottom Tile, T2017400
SKU: T2017400
Laars
SKU: T2017400
Brand: Laars
$94.23 each
In Stock
Get 4 by Tue, Jul 29
In Stock
Get 4 by Tue, Jul 29
Compare
Product Image of Condensing Valve Plunger Cartridge Assembly, 2400-141
$111.03 each
In Stock
Get 4 by Tue, Jul 29
In Stock
Get 4 by Tue, Jul 29
Compare
Product Image of Air Pressure Switch For Mascot FT MFTCF140, MFTCW140, MFTCF140, MFTCW140, FT1015
$66.79 each
In Stock
Get 1 by Tue, Jul 29
In Stock
Get 1 by Tue, Jul 29
Compare
Product Image of 24V Continuous Try Ignition Module, E2305500
24V Continuous Try Ignition Module, E2305500
SKU: E2305500
Laars
SKU: E2305500
Brand: Laars
$245.72 each
In Stock
Get 3 by Tue, Jul 29
In Stock
Get 3 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