Carwash Boilers is the One-Stop-Shop
for Car Wash Floor Heat Boilers

Offering a wide range of high-efficiency and standard boilers for every application, floor heat boilers can be wall-mounted when space is tight,
and can be configured to meet your car wash operation’s needs.
Pre-plumbed packages offer a space- and money-saving alternative for instant productivity.

Carwash Boilers provides design consultation, proven products and installation parts and assistance
to make new builds, retrofits and upgrades seamless.

Knight High Efficiency Boiler

Knight Wall Mount Boiler

  • Advanced negative regulation technology

  • Fail-safe direct-spark ignition

  • Two-in-one stainless steel heat exchanger

  • Fully modulating burner with 5:1 turndown

  • Ease of installation – direct venting up to 100 feet

  • Efficiency optimized cascade

  • Three temperature inputs

  • Variable speed boiler pump control

  • Multiple expanded capabilities for BMS System Integration using a 0-10V Signal

  • Multi-Colored Graphical LCD Display


Its award winning design assures contractors and car wash owners peace of mind and long term savings in operating costs. Now, Lochinvar has raised the KNIGHT standard to even greater heights. The dramatically enhanced SMART SYSTEM control with color display gives installers and maintenance personnel a greater level of control than ever before.

The new SMART SYSTEM is the most advanced integrated boiler control on the market today.

It’s easier to access all the information needed to setup, troubleshoot and monitor all boiler functions. Additionally, two new cascading options allow the installer to fine-tune sequencing of multiple boiler installations. More than ever, KNIGHT is the best choice for traditional hydronic space heating, radiant floor heating and car wash hot water applications.

Now, with 5 floor-standing models and 5 compact Wall Mount units, Lochinvar offers the industry’s broadest selection of modulating-condensing heating boilers. And KNIGHT is the industry’s most advanced boiler design, including the SMART SYSTEM operating control that has quickly become a legendary benchmark among the trade!

For traditional space heating or radiant floor heating applications, KNIGHT offers tremendous savings on energy costs compared to less efficient boilers. KNIGHT has earned the ENERGY STAR, signifying that it has met strict energy-efficiency guidelines set by the EPA and U.S. Department of Energy.


The KNIGHT® Wall Mount, engineered with Lochinvar’s exclusive SMART SYSTEM™ control and an array of other innovative features is far ahead of any heating boiler in its class. It promises and delivers ultimate ease of installation and maintenance. With up to 99% thermal efficiency, low-NOx emissions and a fully modulating burner, it is the best ”green choice” for today’s environmentally focused market.

Seven modulating/condensing stainless steel KNIGHT Wall Mount boilers are available with 55,000–399,999 BTU/hr inputs in a space-saving wall-mounted design. All are equipped for direct-vent installation with air intake and exhaust runs up to 100 feet using PVC, CPVC or AL29-4C vent materials. The new KNIGHT Wall Mount Boiler reflects Lochinvar’s constant commitment to providing all the options needed to serve every application.

All WHN models will have a 5:1 turndown ratio and will be fully modulating.

A new optional feature that is now available on all Knight Boilers is MODBUS protocol for two way BMS communication.