Frequently Asked Questions

Have a question regarding your Mainline® product? We’re here to help. Please find answers to some of our most frequently asked questions below.

It is important that the type of equipment in your home is properly matched to its square footage as well as other relevant factors. A load calculation will evaluate various aspects of your home for an energy efficient match such as:

  • climate that you live in
  • size, shape and orientation of your home
  • square footage
  • type and how much insulation you have
  • quantity of windows, their size, type and the direction they face
  • measurement of walls
  • vents and ductwork
  • seals and estimated air leakage
  • type of materials your house is made of

All of these factors will help your dealer find a system that will work for your home and provide energy efficient savings.

Mainline warranty registration system coming soon.

Mainline Warranty

Click below to protect your product with a dependable warranty from Mainline.

Frequently Asked Questions

Quickly and easily find answers on common topics including locating a serial number, purchasing a Mainline warranty, home load calculations and more.

Mainline is the Best Choice

Mainline offers dependable, high-efficient, smart products to keep your entire home constantly comfortable, no matter the temperature or season. Click below to learn more about Mainline furnaces, air conditioners, heat pumps, air handlers, and coils.

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