Laars Heating Systems

About Laars Heating Systems

For more than 75 years, Laars Heating Systems has been one of North America's most respected names in hydronic heating. Founded in 1948 and headquartered in Rochester, New Hampshire, Laars has built a reputation for engineering reliable, high-efficiency boilers and water heaters that serve homeowners, contractors, engineers, and commercial facility managers alike. Their product line spans everything from compact wall-hung residential combination boilers to large-scale commercial water heating systems found in hotels, hospitals, sports stadiums, and university campuses.

What sets Laars apart is a relentless focus on engineering innovation. The company's proprietary Laars Linc® control technology and Tru Trac® oxygen trim system are found across their premium boiler lines, delivering precision combustion management and efficiency ratings that push the boundaries of what hydronic heating equipment can achieve. Their flagship MagnaTherm commercial boiler series, for example, reaches up to 96% thermal efficiency — a testament to decades of research in heat transfer and fluid dynamics.

Laars products are designed to run on natural gas, liquid propane, or electricity, giving installers the flexibility to specify the right solution for virtually any application — from radiant floor heating and domestic hot water to industrial process heating and pool conditioning. Their HVAC control modules are a central part of this versatility, allowing single or networked units to be managed with precision across complex heating systems.

The brand's commitment to longevity means that genuine boiler repair parts and replacement components are engineered to the same exacting standards as the original equipment. Whether it's a replacement water heater burner assembly, a new set of water heater gas valves and controls, or critical boiler relief and safety valves, every Laars OEM part is designed to maintain safe operation, efficient heat output, and reliable long-term performance.

Who Uses Laars?

Laars products are widely specified by mechanical engineers, licensed HVAC contractors, and building owners who need proven performance in demanding environments. Their modular system designs — like the Pennant series and the Mighty Therm2 — make both new installations and retrofit projects more straightforward, reducing labor time and long-term service costs. For residential customers, Laars combination boilers handle both space heating and domestic hot water from a single, energy-saving unit, making them a popular choice for whole-home hydronic systems.

A Legacy of Quality and Innovation

Originally operating as Teledyne Laars before becoming Laars Heating Systems, the company has continuously evolved its product portfolio while maintaining the engineering rigor that built its reputation. Today, as a subsidiary of Bradford White Corporation, Laars benefits from additional manufacturing and R&D resources, while retaining the dedicated focus on hydronic heating that has defined the brand since its founding. For contractors and facility managers who demand reliability from every component, Laars remains a go-to source for complete heating systems and the OEM parts to keep them running.