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Laars Manuals & User Guides

Laars Heating Systems designs and manufactures high-efficiency residential and commercial hydronic heating systems, including boilers, water heaters, and pool heaters.

Tip: include the full model number printed on your Laars label for the best match.

About Laars manuals on Manuals.plus

Laars Heating Systems is a prominent American manufacturer specializing in engineering and building residential, commercial, and industrial hydronic heating solutions. Headquartered in Rochester, New Hampshire, the company offers a diverse portfolio of products ranging from high-efficiency condensing boilers and volume water heaters to tankless units and pool heaters.

Known for reliability and innovation, Laars products are designed to meet rigorous safety and efficiency standards, serving a wide array of heating applications across North America and beyond.

Laars manuals

Latest manuals from manuals+ curated for this brand.

LAARS FTHW Wall Mounted Gas Condensing Heating User Manual

April 29, 2025
LAARS FTHW Wall Mounted Gas Condensing Heating Specifications Model: FTHW Heating Capacity: 100,000 BTU/hr, 140,000 BTU/hr, 199,000 BTU/hr Type: Wall-Mounted, Modulating Gas, Condensing, Heating Only Boiler Product Usage Instructions Familiarizing…

LAARS 1000 Pennant Hydronic Boiler Owner’s Manual

March 26, 2025
1000 Pennant Hydronic Boiler Specifications Product: Commercial Gas and Indirect Products Selection Guide: 5:1 or FT HTD Indoor/Outdoor: Yes Boiler Sizes (MBH): 1000, 1500, 1600, 2000, 2500, 399, 500, 650…

LAARS PH Mighty Therm User Manual

June 3, 2024
LAARS PH Mighty Therm User Manual FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician, qualified in hot water boiler installation and maintenance. Improper…

Laars support FAQ

Common questions about manuals, registration, and support for this brand.

  • Can I install my Laars water heater or boiler myself?

    No. Laars mandates that all products be installed and serviced by a professional service technician qualified in water heater installation. Improper installation can create safety hazards and will void the warranty.

  • How often should I service my Laars heating system?

    Regular maintenance checks are recommended at least once a year to ensure optimal performance, efficiency, and safety.

  • What should I do if I smell gas near my Laars appliance?

    Do not try to light any appliance or touch electrical switches. Immediately evacuate the area and call your gas supplier from a neighbor's phone. If you cannot reach them, call the fire department.

  • Where can I find warranty information for my Laars product?

    Warranty documents can be found in the Document Library on the official Laars website, or you can check the specific warranty certificate provided with your unit installation manual.