Intertherm Furnaces

Everything you need on Intertherm Furnaces, including model details, industry rankings and customer reviews, all in one place.

Intertherm Furnace Overview

Intertherm supplies a variety of gas, electric and oil furnaces for manufactured homes. The heat exchangers are made of heavy gauge aluminized steel to maximize efficiency and durability. Heat loss and sound production are minimized by the use of insulated cabinets, and the risk of rust and corrosion is decreased by the appliances' protective finish. Intertherm aims to ensure the quality of its systems through its manufacturing line testing of each unit and their components.

What are the 10 Best Furnaces?

Consumer Reviews of Intertherm


  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied
  • #18 of 86 Furnaces
  • 33.33% of customers recommended

Reviews by Furnace Series


Intertherm Gas Furnaces

Intertherm's gas furnaces meet all federal energy efficiency standards and HUD requirements. The units range in efficiency from 78 to as much as 95.1 percent AFUE. They are equipped with safety feature such as dual shut off valves. These valves ensure a complete disconnect of gas to the unit in the event of an emergency. An installed fan switch allows air to be continuously circulated throughout the home all year regardless of outdoor temperature extremes. A split-system air conditioner and heat pump can be added to the built-in coil cabinet for increased comfort.

Intertherm Electric Furnaces

Designed with convenience and versatility in mind, the installation of these white, small and compact electric furnaces can be tailored to each home's unique ductwork configuration. Upflow or downflow air distribution is made possible by the installation of split-system coil cabinets. The manufacturer says its electric furnaces are adaptable enough to work with self-contained or split-system air conditioners and heat pumps.

 [ Intertherm Series :  ]

Intertherm Oil Furnaces

Intertherm oil furnaces range in efficiency from 78 to 83 percent AFUE, and meet all federal energy efficiency standards and HUD requirements. Homeowners have flexibility when using these furnaces because natural gas, propane gas or oil can be used depending on which energy source is more geographically or economically convenient. This oil furnace can be hooked up with a matching cooling system and uses either a high efficiency drum or multiple-tube heat exchanger for maximized performance.


Intertherm furnaces come with a 1-year parts and labor warranty, and there is a 10-year heat exchanger warranty. Extended warranties are available through HVAC dealers.

Find a Certified Heating & Cooling Professional In Your Area

Contact a top-rated local expert to help with all of your home's HVAC needs.

Intertherm Furnace Reviews

Showing 1-5 of 12 reviews


1.0 rating
Very Unsatisfied

Purchased a New Intertherm Model #m7rl Sept. 2016 It will not keep our home warm without subsidizing with Electrical heating in cold winter months. I have come to accept that fact due to my own lack of research before purchasing this unit. However, It has now developed a loud ticking noise in the combustion chamber area. It is quite loud and very irritating. I thought a screw may have come loose inside so I called the Company that installed it to come to check it out. They sent two repairmen and charged me for both. They checked it over and said it was water condensation trapped in the collector and was normal, so nothing they could do. I went to Intertherms Web Site to see if I could E-mail some questions to them to verify my Dealers claim, But could not find a link to get in touch with them. At this moment it is -20 celsius and the Burner won't stay lit. This is one of the worst purchases I have ever made. If you need a new furnace to do some extensive research first. I definitely do not recommend this Furnace

R. Warren

British Columbia, Canada

"Good furnace at reasonable cost"

5.0 rating
Very Satisfied

Have no complaints about the Intertherm 90.0 afue gas furnace in our manufactured home. We purchased the home new 8 years ago and never had any problems with the operation of the furnace. The Intertherm gas furnace has so far been very dependable and heats our home at a very reasonable cost. When it comes time to replace this furnace I would definitely give consideration to buy the same brand.


Weidman, MI

"Nordyne Intertherm M7RL furnace"

1.0 rating
Very Unsatisfied

Just had this furnace installed about a week ago. I'm not impressed. When the blower comes on, it's too loud. Supposed to be adjustable, but haven't heard back from installer. I turn it down at night, and in the morning it takes forever to warm up. Only warms up a few degrees, shuts down and starts back up. Took me 1 1/2 hours one morning to get it up to 70.

C Brown

Youngsville, Pa

"I Just Want It Fixed"

1.0 rating
Very Unsatisfied

My Intertherm furnace was installed about 12 years ago. Since then, it has failed 3 to 5 times each heating season. It's always the same problem, limit switches. Usually the problem can be resolved by pressing the button on the limit switch. But the limit switches quickly fail and have to be replaced. My dealer failed to provide me with spare switches as I requested. We have spent thousands of $$ on service calls and dealer- suggested solutions, including a thorough cleaning and upgrade of the exhaust system. I wrote to Intertherm, but did not get a response. I will never buy an Intertherm product or any other product from the dealer who sold it to me again.

John Dalhaus

Fairview Heights, IL

"Intertherm's Customer Service"

1.0 rating
Very Unsatisfied

I have had an Intertherm electric furnace model FEH015HA in my home for more than 20 years. The furnace has provided excellent service and would have continued to provide excellent service had an electrical power surge not damaged the unit. Unfortunately, I cannot say the same for Intertherm's customer service. It is less than pathetic. After the power surge, I had to replace my furnace. Intertherm's customer service told me the exact model replacement is a model E2EB015Ha. Intertherm lied! The E2EB015Ha is not an exact replacement for the FEH015Ha. Intertherm has made changes in the outer metal box and location of wire connections inside the unit which made a direct switch out impossible. In addition to the installer, I have also had to hire an electrician to make the appropriate changes in the wiring to enable connection to the new furnace. Exact model replacement, not so! Intertherm's customer service provided no suggestion as to how to make the transition. In addition, Intertherm (aka Nordyne) does not allow consumers to talk to their technical personnel. If you buy an Intertherm/Nordyne product and have a problem, you are on your own to figure out the solution. I cannot speak badly enough about Intertherm's pathetic customer service.

Paticia Trice

Houston, Texas

HVAC Brands

Learn more about your home's heating and cooling system with our guides, how-to's, FAQ's, tips and more.

Trane American Standard Lennox Carrier Goodman

Ready to get a quote from an HVAC contractor?

Let us know what type of service you need and we can connect you with a certified local HVAC contractor.

Please enter a valid name

Please enter a valid phone number

Please enter a valid zip code

There are no dealers in this zip code.

Please enter a valid email address

Please select repair or replace

Please select heating, cooling or both