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Laars NeoTherm Modulating, Condensing Boilers


Everything a modern boiler should be
Natural Gas or Liquid Propane
FREE SHIPPING LOWER 48 to nearest commercial dock *on boilers only, not accessories

NeoTherm is a direct vent, sealed combustion, condensing boiler boasting 95% efficiency that modulates with a 5 to 1 turndown. Zero clearance to combustibles and the convenient top connections (horizontal or vertical direct vent) make NeoTherm perfect for tight installations. Featuring an ASME stainless steel heat exchanger and NOx emissions lower than 10ppm, NeoTherm is easy to use and easy on the environment. Built standard with the new LAARS Integrated Control System, all controls are contained in one safe, simple, user-friendly device.

12 year limited warranty on residential models
10 year limited warranty on commercial models

Click here for prefabricated boiler panels compatible with the LAARS NeoTherm.

PDF Documents:
NeoTherm Installation Manual | Domestic Water with 3-way Valve | Domestic Water with Pump


2-3 week lead time on all Laars boiler orders.
Laars Boilers must be installed and serviced by a licensed contractor.
When commissioning a boiler you will need an electrician and gas technician with combustion analyzer and/or manometer to properly set up your new appliance.
$200 minimum order of any Laars parts. No returns are accepted.

↓   Natural Gas Boiler w/Factory Pump   ↓

NeoTherm 080-Natural Gas w/pump

Part No: NTH080NXN

$3973.92 each

NeoTherm 105-Natural Gas w/pump

Part No: NTH105NXN

$4348.53 each

NeoTherm 150-Natural Gas w/pump

Part No: NTH150NXN

$4850.04 each

NeoTherm 210-Natural Gas w/pump

Part No: NTH210NXN

$5462.29 each

NeoTherm 285-Natural Gas w/pump

Part No: NTH285N

$7969.00 each

NeoTherm 399-Natural Gas w/pump

Part No: NTH399NXN

$9503.40 each

NeoTherm 500-Natural Gas w/pump

Part No: NTH500NXN

$11942.78 each
↓   Propane Boiler w/Factory Pump   ↓

NeoTherm 080-Propane w/pump

Part No: NTH080PXN

$3973.92 each

NeoTherm 105-Propane w/pump

Part No: NTH105PXN

$4348.53 each

NeoTherm 150-Propane w/pump

Part No: NTH150PXN

$4896.99 each

NeoTherm 210-Propane w/pump

Part No: NTH210PXN

$5583.06 each

NeoTherm 285-Propane w/pump

Part No: NTH285PXN

$8275.50 each

NeoTherm 399-Propane w/pump

Part No: NTH399PXN

$9899.38 each

NeoTherm 500-Propane w/pump

Part No: NTH500PXN

$12249.00 each
↓   Natural Gas Boiler without Pump   ↓

NeoTherm 399-Natural gas without pump

Part No: NTH399NXX

$9095.40 each

NeoTherm 500-Natural gas without pump

Part No: NTH500NXX

$11230.25 each

Natural Gas w/o pump, with CSD-1, FM, GAP, IL

Part No: NTH500NJX

$11751.50 each
↓   Propane Boiler without Pump   ↓

NeoTherm 399-Propane without pump

Part No: NTH399PXX

$9095.40 each

NeoTherm 500-Propane without pump

Part No: NTH500PXX

$11230.25 each
↓  Natural Gas Modulating Condensing Water Heater w/Factory Pump   ↓

NeoTherm NTV 150-Natural Gas w/pump

Part No: NTV150NXN

$5939.35 each

NeoTherm NTV 199-Natural Gas w/pump

Part No: NTV199NXN

$7306.88 each

NeoTherm NTV 285-Natural Gas w/pump

Part No: NTV285NXN

$9285.63 each

NeoTherm NTV 399-Natural Gas w/pump

Part No: NTV399NXN

$10778.60 each

NeoTherm NTV 500-Natural Gas w/pump

Part No: NTV500NXN

$13449.00 each
↓  Propane Modulating Condensing Water Heater w/Factory Pump   ↓

NeoTherm NTV 150-Propane w/pump

Part No: NTV150PXN

$5939.35 each

NeoTherm NTV 199-Propane w/pump

Part No: NTV199PXN

$7306.88 each

NeoTherm NTV 285-Propane w/pump

Part No: NTV285PXN

$9285.63 each

NeoTherm NTV 399-Propane w/pump

Part No: NTV399PXN

$10778.60 each

NeoTherm NTV 500-Propane w/pump

Part No: NTV500PXN

$13449.00 each
↓  NeoTherm Conversion Kits   ↓

NeoTherm 080 propane conversion kit

Part No: CA006201

$53.00 each

NeoTherm 105 propane conversion kit

Part No: CA006202

$53.00 each

NeoTherm 150 propane conversion kit

Part No: CA006203

$53.00 each

NeoTherm 210 propane conversion kit

Part No: CA006204

$53.00 each
↓  NeoTherm Parts   ↓

Combustion Blower for NeoTherm 80 or 105

Part No: RA2113700

$492.40 each

Combustion Blower for NeoTherm 150

Part No: RA2107500

$460.04 each

Combustion Blower for NeoTherm 210 or 285

Part No: RA2114200

$669.49 each

Combustion Blower for NeoTherm 399

Part No: RA2114500

$669.50 each

Combustion Blower for NeoTherm 500

Part No: RA2113100

$926.01 each

Combustion Blower for NeoTherm 600

Part No: RA2108500

$1430.28 each

Gas Valve Venturi for NeoTherm 80

Part No: RV2017900

$210.51 each

Gas Valve Venturi for NeoTherm 105

Part No: RV2017901

$209.70 each

Gas Valve Venturi for NeoTherm 150

Part No: RV2017902

$203.73 each

Gas Valve Venturi for NeoTherm 210

Part No: RV2017903

$199.02 each

Gas Valve Venturi for NeoTherm 285

Part No: RV2017904

$363.39 each

High Gas Pressure Switch for NeoTherm 500

Part No: R2004000

$129.40 each

Low Gas Pressure Switch for NeoTherm 500

Part No: R2004100

$136.47 each

Flame Sensor w/gasket

Part No: R2069200

$64.07 each

Heat Exchanger for NeoTherm 80

Part No: RS2106900

$1845.63 each

Heat Exchanger for NeoTherm 105

Part No: RS2105500

$2063.99 each

Heat Exchanger for NeoTherm 150

Part No: RS2105800

$2292.74 each

Control module for NeoTherm 150-285 Revision 2

Part No: RTXD7109

$398.69 each

Pump for NeoTherm 80

Part No: RA2112232

$204.72 each

Pump for NeoTherm 105 or 150

Part No: RA2112227

$567.04 each

Pump for NeoTherm 210

Part No: RA2112228

$508.25 each

Pump for NeoTherm 285

Part No: RA2112230

$473.41 each

Pump for NeoTherm 500

Part No: RA2112229

$723.85 each

Low Water Cutoff for NeoTherm 500

Part No: R0021901

$381.30 each

Inlet Water Temperature Sensor for all NeoTherm boilers

Part No: RE2320600

$56.50 each

Duplex Water Temperature Sensor for all NeoTherm boilers

Part No: RE2319900

$58.54 each

Stack Temperature Sensor for all NeoTherm boilers

Part No: RE2319700

$61.04 each

Transformer for all NeoTherm boilers

Part No: RE2108700

$71.47 each

Gasket Set (burner, ignitor, sensor, door) for all NeoTherm boilers

Part No: RS2109100

$52.69 each

Rear Refractory Tile

Part No: R50D2021

$64.13 each

Front Refractory Tile

Part No: RT2109001

$78.28 each

Control module for NeoTherm 150-285 Revision 3 Replaces RXD7109

Part No: RXD7143

$445.74 each

DHW Tank Sensor

Part No: E2310600

$53.78 each

On/Off Switch

Part No: E2324300

$43.34 each

Gas Valve/Venturi for Neotherm 399

Part No: RV2019200

$443.25 each

Supplemental Switching Relay 250V 15A RPM
Includes RPZF3 & RPM32F7

Part No: RPZF3 SSR

$59.99 each

Optional Flow Switch for NeoTherm 80-210

Part No: CA004801

$156.75 each

2" Flush-Mount Concentric Terminal

Part No: CA010100

$75.75 each

3" Flush-Mount Concentric Terminal

Part No: CA010101

$75.75 each

4" Flush-Mount Concentric Terminal

Part No: CA010102

$75.75 each

2" concentric vent kit termination (bazooka-style)

Part No: 239-44069-02

$85.00 each

3" concentric vent kit termination (bazooka-style)

Part No: 239-44069-01

$85.00 each

1 Liter Neutralizing Cartridge w/media for NeoTherm 80-285

Part No: A2123601

$104.25 each

2 Liter Neutralizing Cartridge w/media for NeoTherm 399-850

Part No: A2123602

$169.50 each

2.5 lbs Neutralizing Media (A2123601 requires 1 kit, A2123602 requires 2 kits)

Part No: A2123605

$47.75 each
↓  Accessories   ↓

Honeywell 3-Way 1-1/4" FNPT Actuated Control Ball Valve with 34 Cv capacity
No pre-assembled actuator & no weather enclosure
Order & use with Damper Actuator (below)

Part No: VBN3DN3P0X

$246.13 each

Honeywell 2 Position Damper Actuator with Spring Return (44 lb-in)
Order & use with 3-Way Actuated Control Ball Valve (above)
HoneywellMS4105A1030-InstallationManual.pdf

Part No: MS4105A1030

$212.29 each
↓   Heat Transfer Paste   ↓

Heat Transfer Paste, 1 oz., Temp range -65°F to 400°F, Flashpoint 500°F, Dropping point, 500°F, Specific gravity 2.35

Part No: HTPaste

$8.69 each
$40.25 (5 x $8.05)
↓   Concentric Vent Adapter Kits   ↓

Concentric Vent Kit adapts from 2" pvc exhaust
4" x 39 3/4"

Part No: divcvent2

$78.49 each

Concentric Vent Kit adapts from 3" pvc exhaust
5"x 39 3/4"

Part No: divcvent3

$99.88 each

Concentric Vent Kit adapts from 4" pvc exhaust
6"x 39 3/4"

Part No: divcvent4

$198.78 each

Contact

Toll Free: (866) 361-4782

Fax: 206-274-1501

17420 Vashon Hwy SW
PO Box 2270
Vashon, WA 98070

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