Year-end inventory will affect orders placed from 2/24-2/28. We expect these orders to process and ship the following week of 3/3.

Customer Service/Support

Lanair isn’t just about selling waste oil heaters—we’re about keeping them running strong. Whether you’re firing up your heater for the first time or have been a customer for years, we’ve got your back. Our expert support team is ready to help with installation, maintenance, and troubleshooting, ensuring you get the most out of your heater.

Lifetime Phone Support

Lanair offers lifetime phone support because we believe in standing by our products for the long haul. Got a question? Need help with setup, maintenance, or troubleshooting? Call us. Our techs know these heaters inside and out, and they’ll get you the answers you need fast. No runaround—just real solutions from real experts.

Maintenance & Troubleshooting Videos

Lanair heaters are factory direct, so we make installation and upkeep as simple as possible. To make things even easier, we’ve put together step-by-step videos and detailed guides to walk you through everything from setup to routine maintenance. 

See Video Library

What You’ll Find:

Installation Guides: No guesswork—just clear, step-by-step instructions to get your heater up and running safely and efficiently.

Routine Maintenance Checks: Keep your heater in peak condition with guidance on cleaning filters, checking fuel lines, and inspecting electrical connections.

Troubleshooting Tips: Heater acting up? Our resources show you how to diagnose and fix common issues fast, without wasting time.

FAQs & Common Issues: Get quick answers to common concerns so you can keep your heater running without a hitch.

Lanair waste oil heaters are built to last, and with the right care, they’ll deliver years of reliable heat. Our world-class support team ensures you’re never left in the cold. Need help? Pick up the phone—we’re here for you.

Parts & Service Inquiries:

Toll Free: (888) 370-6531
Fax: (608) 757-7878
service@lanair.com

Sales Inquiries:

Toll Free: (800) 562-5504
Fax: (608) 757-7878
sales@lanair.com

Hours of Operation: 

Monday - Friday
8:00 AM - 5:00 PM (Central Time)

Corporate Location:

Lanair Products LLC
4109 Capital Circle DR
Janesville WI, 53546

Access Our Product Warranties:

We stand behind the quality and durability of our products, which is why each one comes with a warranty. You can find the full details in each product manual, and we’ve also provided direct links to the warranty information for both our current and discontinued models below:

XT-75: Warranty can be found here on page 53

XT-150, 200, 250, 300, D-200, D-300: Warranty can be found here on page 61

MX150 & MX200: Warranty can be found here on pages 53 and 54

MX250 & MX300: Warranty can be found here on pages 53 and 54

MXD200: Warranty can be found here on pages 53 and 54

MXD300: Warranty can be found here on pages 53 and 54

Why Lanair?

Lanair was founded in 1976 by Les and Nancy Marzahl in Janesville, Wisconsin, during a time when energy costs were rising. Les realized that waste oil could be used as an affordable and eco-friendly heating source, and from that idea, Lanair was born.

Over the years, Lanair has grown to become the largest manufacturer of factory-direct waste oil heaters in the world. Our focus has always been on providing reliable, cost-effective heating solutions that also help the environment. As energy prices continue to rise, we remain dedicated to saving you money while reducing your carbon footprint.

We’re proud of our history and the work we do, and we’re always ready to support you with both the products and the dedicated customer service you need. Get in touch with us today for any questions, concerns, or assistance!