Laars Water Heater Manuals
Select your Laars model number below for installation steps, settings, maintenance schedules, troubleshooting and the full specification sheet. Your model number is printed on the rating plate.
Laars water heaters by model number
| Model | Description | Certified |
|---|---|---|
| LT150NRX1 | 150,000 Btu/h natural gas tankless water heater | December 2025 |
| LT150NXX1 | 150,000 Btu/h natural gas tankless water heater | December 2025 |
| LT150PRX1 | 150,000 Btu/h propane tankless water heater | December 2025 |
| LT150PXX1 | 150,000 Btu/h propane tankless water heater | December 2025 |
| LT199NRX1 | 199,000 Btu/h natural gas tankless water heater | February 2025 |
| LT199NXX1 | 199,000 Btu/h natural gas tankless water heater | February 2025 |
| LT199PRX1 | 199,000 Btu/h propane tankless water heater | February 2025 |
| LT199PXX1 | 199,000 Btu/h propane tankless water heater | February 2025 |