Comfortmaker Furnace Reviews – 2021 Guide

| Last Updated: June 28, 2021

With severe climatic changes, people all over the globe rely on one or more HVAC installations to keep them comfortable. Even now, the temperatures are dropping rapidly, and soon it will be that time of year when you will look towards your reliable heating system to keep you warm and cozy. One such heating system is a furnace.

A furnace is a device that heats up the air and blows it through the vents to create a warm and comfortable environment. It is a primary source of heat that distributes heat evenly throughout the place of installation. 

This article will tell you about some of the best furnaces manufactured by a well-known brand, Comfortmaker.

Who is Comfortmaker?

Comfortmaker is a subsidiary of Carrier. Both belong to the same parent company, International Comfort Products (ICP). It falls in the same category as Bryant, Day & Night, Heil, etc. The brand is a well-known name in the HVAC market. Its ACs and furnaces are some of the most long-running ones.

It offers one of the best warranty coverages over the entire range. Many of its units deliver highly efficient service thanks to the Energy Star certification they have received. They are not only affordable but also very efficient. In fact, Comfortmaker is an effective mid-range option for anyone who is looking to purchase a new heating or cooling system. 

What Makes Comfortmaker Furnaces Stand Out From the Competition?

Comfortmaker is known for producing high-quality furnaces. Not only do the comprehensive warranty and efficient performance make them stand out from the competition, but Comfortmaker made sure to integrate some exclusive features and technologies to set it apart from the competition.

The Ion™ System Control is a remote WiFi-operated system that gives you complete control of a Comfortmaker furnace. You can easily regulate it from any part of the world for better efficiency, which, in turn, saves you money. 

Its RPJ®(Rigid Press Joint) Heat Exchanger with an aluminized steel design smartly captures the additional heat produced by the system to improve efficiency. 

Comfortmaker goes an additional step to offer different levels of coverage to match your investment. For example, even on its lowest-tier, Performance® Series, it offers a limited 20-year warranty on the heat exchanger as well as a limited ten-year warranty on parts.

Review of the Best Comfortmaker Furnaces

Choosing a new furnace is all fun and games until you realize how much you have to consider. From price to repairs and warranty, you have to carefully consider all the aspects before deciding on a certain unit. Comfortmaker really excels itself in all these departments. Here is a detailed roundup of some of the best models for you to check out. 

Best Overall

Comfortmaker Ion 96 G96CTN Gas Furnace


Energy Efficiency (AFUE): 96.70%

Parts Warranty: 10 Year(s)

Unit Warranty: Limited Lifetime Warranty on the heat exchanger

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What Recent Buyers Report

This Comfortmaker furnace is much appreciated for its flexible operation. Users really like the two-stage operation and variable speed that generate and regulate heat evenly. It is easy to operate and swiftly responds to each and every command. They really like that it runs on the low stage most of the time to save energy but shifts to high as soon as the temperature drops. 

Why it Stands Out to Us

The Comfortmaker Ion 96 G96CTN Gas Furnace belongs to our list because of its energy-saving two-stage gas valve and fully variable-speed blower motor. Plus, the Ion System Control grants it great communication compatibility. You can control it remotely without having to move. You can also run diagnostics on it via the remote control. 

It can run on dual-fuel for added convenience. It is one of the quietest models on our list thanks to a soft-mounted blower and an inducer motor. The construction is solid, pre-painted steel with an insulated cabinet and a tight fit door latch system. Moreover, it is followed by a comprehensive warranty that proves its durability. 

Bottom Line

If you are looking to buy a solid yet dependable unit to heat up your home, you should really look into purchasing this one. It is easy to operate and is flexible in its operation and temperature changes. The Energy Star certification and a high BTU output really make it a solid contender for your choice.


Low-stage operation saves energy

Flexibly responds to temperature changes

Delivers amazing efficiency up to 96.7% AFUE

Features an energy-saving two-stage gas valve

Generates 60,000 to 120,000 BTUs of heat energy


Warranty is not transferable

Not as efficient as a modulating gas furnace


Comfortmaker QuietComfort 96 G96VTN Gas Furnace


Energy Efficiency (AFUE): 96%

Parts Warranty: 10 Year(s)

Unit Warranty: Limited Lifetime Warranty on the heat exchanger / 5-Year No Hassle Replacement™ Limited Warranty

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What Recent Buyers Report

According to recent buyers, this unit is highly efficient and noiseless. They really like the thoughtfulness Comfortmaker showed to make this a safe device. Its compatibility with both air purifiers and humidifiers ranks it high in its consumers’ eyes. 

Why it Stands Out to Us

We think that this furnace is a durable, affordable, and reliable unit. It belongs to the QuietComfort series that is known to deliver incredibly noiseless in-home comfort. It owes its noiselessness to the fully insulated steel cabinet and a two-speed induced draft combustion blower. Furthermore, it mostly runs on low speed for quiet functionality. 

It is also dual-fuel compatible with a great combination of thermostat and heat pump that delivers consistent heating. You can truly trust it to drive the cold away and create a warm cozy environment for you to enjoy that, too, without jacking up your energy bills. 

Bottom Line

If remote control operation is not a big issue, you should consider this model seriously. It is one of the effective and efficient furnaces on the market. And on top of that, it is also one of the safest. The attention Comfortmaker has paid towards its safety shows how much the company prioritizes consumers. We really like this unit for this aspect, and, of course, for its noiseless efficiency. 


Two-stage gas valve saves energy

Boasts an AFUE rating of up to 96%

Fully insulated cabinet prevents heat loss

High-temperature limit control prevents overheating

Capable of producing 60,000 to 120,000 BTUs of heat energy 


Cannot be controlled remotely

Ten-year parts limited warranty can only be availed upon timely registration

Best for the Money

Comfortmaker N95ESN Performance 95 Gas Furnace


Energy Efficiency (AFUE): 96%

Parts Warranty: 10 Year(s)

Unit Warranty: Limited Lifetime Warranty on the heat exchanger

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What Recent Buyers Report

This model has been a huge hit amongst people who were seeking an efficient, eco-friendly furnace. They like its natural gas combustion that is much easier to monitor than liquid propane. The Ultra-Low NOx emission is a major reason most consumers choose to purchase it. They also like the comprehensive warranty coverage Comfortmaker offers on it. 

Why it Stands Out to Us

Global warming is wreaking havoc on our planet. We should all play our part and choose eco-friendly products over their harmful counterparts. And this furnace delivers just that. It is very efficient and eco-friendly in its working. It runs on natural gas and emits ultra-low NOx emissions. 

The unit itself is tough and long-lasting. It features a high-quality, corrosion-resistant, one-piece steel cabinet. The primary heat exchanger is RPJ®, while the secondary heat exchanger is stainless steel. It operates on an efficient multi-speed ECM blower motor and induced draft combustion motor to deliver even and consistent heating. These two features are also responsible for its quiet operation, while the insulated cabinet is great at preventing heat loss. 

Bottom Line

Our future generations need us to go green. And this unit is designed to take this approach. All the reliable parts used in its construction work together smoothly to deliver an efficient and eco-friendly means of heating. Most of the furnaces available on the market lack in this regard. So, choose it to bask in the greener heat it produces. 


Efficient multi-speed ECM blower motor

Supports self-diagnostics with a bright LED

Offers twelve different venting configurations 

Has a heating capacity of 60,000-80,000 BTUs

Slide-out heat exchanger and blower assembly


Not eligible for the Clean Air Furnace Rebate Program 

Not eligible for the Clean Air Furnace Rebate Program 

Best Comfortmaker Gas Furnace

Comfortmaker N95ESN Ion 98 Gas Furnace


Energy Efficiency (AFUE): 98%

Parts Warranty:10-Year Parts Limited Warranty / Limited Lifetime Warranty on the heat exchanger

Unit Warranty: 10-Year No Hassle Replacement™ Limited Warranty

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What Recent Buyers Report

Buyers love this top-of-the-line gas furnace. They report that it is one of the most efficient heating systems. Though it does cost a bit extra, it makes up for it with its money-saving efficiency. People have been using it for years without a single hitch in its operation. 

Why it Stands Out to Us

We love this furnace for all the convenience it offers to its owner. The design is carefully thought out. It ensures safety and does not allow additional heat to escape. It does so with its solid, pre-painted steel-insulated cabinet fitted with a tight fit door latch.

The modulating operation also sets it apart from other models on this list. The soft mounted, variable speed blower and inducer motor also contribute towards its quiet operation. It relies on an RPJ® primary and stainless steel secondary heat exchanger, compatible heat pump and thermostat, and the convenience of Wi-Fi remote access to deliver a smooth and trouble-free furnace operating experience. 

Bottom Line

We all love having things at our fingertips. Well, with this Comfortmaker furnace model, you will definitely heat up your home with a touch of a finger that, too, without too much load on your energy bill. It is safe to use and effective to heat, so you should give this serious consideration.


Low-stage operation helps save energy

Modulating operation increases efficiency

Has an incredible AFUE Rating of up to 98%

Even temperature control and quiet operation 

Outstanding level of electrical efficiency of the motor


Comes at a relatively costlier price

Needs Wi-Fi connectivity for remote operation

Editor’s Pick

Comfortmaker N95ESU Performance 95 Gas Furnace


Energy Efficiency (AFUE): 95%

Parts Warranty: 10 Year(s)

Unit Warranty: 20 years Warranty on the heat exchanger

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What Recent Buyers Report

This furnace is a huge hit among people who live in regions with strict emissions regulations. They really like the special attention Comfortmaker paid to help them get over the strict regulations. Consumers like it for its quiet and efficient performance. They report that it has a durable and solid construction that will provide them with years of good service. 

Why it Stands Out to Us

NOx emissions are an issue these days, and this model is very efficient in keeping its emissions in check. It helps prevent poor water quality, smog, and acid rains. These are huge concerns nowadays. Fortunately, with this model, you can play your part without letting cold air in your home. 

It features a solid steel construction that is pre-painted for longer durability. The cabinet itself is completely insulated to prevent heat or sound from escaping. This contributes towards both its efficiency and noiselessness; the two most important factors any buyer checks before purchasing a new furnace. 

Bottom Line

If NOx emissions are a big concern for you, this unit is the right pick. You can purchase it without any guilt and chase the cold air away from your home with its effective and efficient heat. Coming from Comfortmaker, you can trust it to last long and bask you in consistent heat throughout the fast-approaching winter. 


An ultra-low NOx model

Features a multi-speed blower motor

Boasts an amazingly quiet performance

Comes with a 20-year heat exchanger limited warranty

Equipped with a fully insulated cabinet to prevent heat loss


Cannot run on liquid propane fuel 

Not eligible for the no-hassle replacement warranty

Comparison Overview

Comfortmaker is a strong player in today’s HVAC market. It produces efficient and long-lasting heating and cooling systems, especially furnaces. They really are worth every penny that buyers spend on them. Let’s see how Comfortmaker furnaces compare to the units of some other brands.

Comfortmaker vs. Lennox Furnace

Lennox is one of the oldest furnace makers in America. It is known for producing quiet furnaces with variable blower motors. Let’s compare and contrast it with Comfortmaker. 


The product line of both brands can be classified into three categories. Each tier is available at a different price-point. They boast quality construction with long-lasting parts used in their manufacturing.


Lennox prides itself on the highest percentage of proprietary parts, but that also contributes to parts shortage and repair delays. Comfortmaker is better at dealing with these issues. Also, the warranty coverage that the latter offers on some of its units is the best. This Lennox cannot keep up with. 

Comfortmaker vs. Trane Furnace

Trane is a brand of American Standard. It produces great heating and cooling units. Let’s see how its furnaces compare with those manufactured by Comfortmaker. 

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Both companies manufacture furnaces that are highly efficient and generate higher BTUs. The two also offer a ten-year limited warranty on parts.


Trane lets you transfer the warranty to a future owner, which Comfortmaker does not allow. It also allows you to purchase a warranty that covers the cost of labor and parts. But, from the price point of view, Comfortmaker is a more affordable option.

Comfortmaker Furnace vs. Carrier

Carrier is a well-known name in the HVAC industry. It is a highly preferred choice for HVAC solutions. Here is a comparison overview of both Carrier and Comfortmaker. 


Both Carrier and Comfortmaker belong to International Comfort Products (ICP). The units they produce have high SEER ratings. This means they are very efficient and don’t increase your energy bills. Their units are some of the quietest in the industry. 


Comfortmaker furnaces are the more durable of the two. Plus, furnaces by Carrier are relatively expensive. 

Ducane Furnace vs. Comfortmaker

Ducane Furnace (Photo credit:

Ducane is a sub-brand from Lennox and offers decent quality and warranties. Let’s look at how it stands against Comfortmaker.:


Ducane and Comfortmaker are brands of bigger companies. Their furnaces are built with quality components, and they lie on the more affordable side of the price spectrum. 


Though their parts are of high quality, many Ducane furnace components are unique to them, so repairs can be delayed. It also falls behind in warranty as Comfortmaker offers comprehensive coverage over all products. 

Day & Night vs. Comfortmaker Furnace

Day & Night belongs to the same parent company as Comfortmaker, ICP. Though these are quite similar, let’s see how they compare with each other. 


As we already mentioned, they have the same parent company, so the parts and construction are quite similar. Even the warranty they offer is comprehensive and has a no-hassle replacement clause. They are more affordable than competitive brands and promise good value for the money. 


Day & Night sometimes has comparable units at a lower price point, making it the more affordable option between the two. 

Comfortmaker Furnace Troubleshooting

We are impressed with how well Comfortmaker Furnaces perform. Overall, these mid-range units produce consistent and effective heat without being a burden on your energy bills. But since they are man-made machines, they too sometimes malfunction. 

You might have the burner blow out unexpectedly, a dirty filter may be blocking the air supply, or the furnace won’t ignite at all. 

Fortunately, each Comfortmaker furnace passes rigorous quality control before it is sent out for sale, so usually, the problems that users face are minor issues that can be resolved with simple troubleshooting. Let’s have a look at some common problems and their solution. 

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Comfortmaker Furnace Troubleshooting Codes

Comfortmaker furnace error codes display themselves in the form of LED flashes. Here is a guide showing you how to read the error codes on your furnace. 

  • Code: LED flashes steadily.
  • Cause: Normal operation.
  • Solution: Your furnace is running smoothly without any issues. 
  • Code: Two flashes.
  • Cause: Pressure switch is stuck or closed.
  • Solution: There is some obstruction in the pressure tubing. Clear it for normal operation. 
  • Code: Three flashes.
  • Cause: Pressure switch is stuck on open. Alternatively, the manual ON/OFF switch could be on the off position.
  • Solution: Make sure that the vent size is proper. Also, see that the inducer motor is not defective. There could be excessive wind supply or a faulty pressure switch that needs changing. You can also check pressure tubing for obstruction or disconnection. There could be inadequate air supply or a restricted vent that needs resolving.
  • Code: Four flashes.
  • Cause: The limit switch is on.
  • Solution: Try tightening the loose blower wheel, remove vent restriction, if any, check the air filter as it might need replacing. The blower can be defective and needs replacement. You can also try to restrict the wind.
  • Code: Five flashes.
  • Cause: Flame is out of sequence.
  • Solution: The gas valve is either left open or is leaking. Check and react accordingly. 
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  • Code: Six +1 flashes.
  • Cause: Soft lockout: Ignition trials have maxed out.
  • Solution: Call professionals for service.
  • Code: Six +2 flashes.
  • Cause: Flame blew out while running. Other causes include a blocked condensate or a cycling pressure switch.
  • Solution: Call for professional help.
  • Code: Six +3 flashes. 
  • Cause: Pressure switch did not stay closed during operation.
  • Solution: Call for service.
  • Code: Six +4 flashes.
  • Cause: Limit switch was switched on during operation.
  • Solution: Call professionals to service the furnace.
  • Code: Seven flashes.
  • Cause: Main limit was left open for long, i.e., one-hour delay.
  • Solution: Call for service.

You should remember that troubleshooting these error codes requires you to work with components of high temperature and voltages. So, take the necessary precautions. And, it is always a good idea to call for help when you don’t feel up to it. 

Comfortmaker Furnace Burner Goes Out When Blower Comes on

This usually happens when you have an open safety control. Try testing all your safety control with a voltmeter when the draft inducer is running. A weak connection may be giving out a false signal of open safety control, which prompts the control board to shut off the furnace. 

It also happens when your gas valve does not get full 24 volts to open and light the flames. If that is the case, make sure it gets 24 volts; otherwise, it won’t open. 

How to Fix Pressure Switch on Comfortmaker Furnace

A pressure switch is a safety device on your Comfortmaker furnace. When it senses negative pressure inside the burner box, it signals the control board to shut the system down. It can get stuck or fail sometimes. If this happens, look for the cause of negative pressure before checking it for electrical failure. If your pressure switch is faulty, you can always replace it. 

How to Light a Comfortmaker Furnace Pilot

Lighting a Comfortmaker pilot is an issue every furnace owner has faced at some point. The struggle is not real, as it is much simpler than it actually looks. 

Locate the switch that says on, off, and pilot, and turn it to pilot. Now, press the reset button and keep holding it down. Bring a fire close to the pilot to ignite it. Once you are sure that the pilot is stable, you can release the reset button. In fact, every model has its specific lighting instructions given on a label stuck somewhere on the furnace.

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Comfortmaker Furnace Won’t Ignite

This can happen because of a number of reasons, including low fuel supply, dirty air filter, pilot or ignitor issues, or a faulty thermostat. You should check your fuel to see whether the furnace is getting enough. Clean or replace your dirty filter with a new one. 

If the pilot is the culprit, you will need professional help, and if the ignitor is causing trouble, then gentle cleaning will resolve it. And if your thermostat is not communicating with the furnace, you should consider replacing it. If none of these steps have any effect, you should get a professional to have a look. 

Comfortmaker Furnace Pressure Switch Stuck Open

The common reasons for the pressure switch getting stuck open are a faulty switch, loose pressure switch hose, or an obstructed chimney. The pressure switch tells whether the inducer motor is doing its job via the pressure hose. If the hose is loose or has cracks, it will send out an inaccurate reading, causing a stuck pressure switch. 

The pressure switch stays open if the system cannot get rid of combustion gases. This happens because of an obstructed flue pipe. Clear out the debris to resolve the problem. A faulty switch can also cause problems. Try replacing it. 

How to Clean a Flame Sensor on a Comfortmaker Furnace

A flame sensor is a simple device inside the burner assembly. It is a rod-like structure that sits in front of the flame stream inside the furnace and confirms that the flame is present. A dirty flame sensor does not let the furnace ignite. Here is how to clean it. 

  1. Turn off the furnace and disconnect the power supply. 

  2. The flame sensor in Comfortmaker furnaces usually mounts with a 1/4″ hex head screw. Just unscrew it, and the sensor will slide out. 

  3. Take light-grit sandpaper or steel wool and gently rub the sensor with it.  

  4. Use a clean paper towel to wipe off the grit. 

  5. Remount the sensor on the burner assembly. 

  6. Turn the furnace back on.
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The cold season calls for a good furnace to keep you warm and comfortable. We think Comfortmaker furnaces are some of the best in this regard. Compared to most competitive brands, they keep you warm, are highly efficient, and last for a long time. Some users have had them for decades without any major issues. The minor problems are not that much of an issue as you can easily troubleshoot them.

If you are interested in buying a new furnace or are looking to upgrade your existing one, we would highly recommend you get one from Comfortmaker. The models we recommend are some of the best. Choose any of these, and it will be a one-time purchase that will last you for years, if not decades, to come. 

People Also Ask

Comfortmaker Furnaces are highly appreciated for their quality and performance. You can really rely on them for effective and efficient heating. Their vast range of products has something for everyone. If you still have some doubts clouding your mind, here are some frequently asked questions about them to help you understand better. 

Where Are Comfortmaker Furnaces Made?

Since it is a brand of International Comfort Products (ICP), Comfortmaker furnaces are made in ICP’s production facilities situated in the US and Mexico. The components are manufactured and put together at these top-of-the-line plants and then sent to their distributors to supply worldwide. 

Who Makes the Comfortmaker Furnace?

International Comfort Products (ICP) makes Comfortmaker furnaces. Its world-class manufacturing facilities are situated in Mexico and the US. ICP produces highly efficient Comfortmaker heating and cooling systems and employs a large network of independent wholesalers and contractors to distribute their products. 

Who Owns Comfortmaker?

Throughout its existence, the company changed a lot of hands. Originally owned by American Furnace Company, it became a part of Singer Co.’s Climate Control Division in 1968. Then it became a unit of SnyderGeneral Corp in 1982. And finally, International Comfort Products (ICP) purchased it in 1991, which it still remains a part of. 

How Long Has Comfortmaker Been Around?

Comfortmaker has been around for quite some time. We don’t know the exact year of its establishment, but it dates back to even before 1968 when as a part of American Furnace Co., it was taken over by Singer Co.‘s Climatic Control Division. So it has been around for more than 50 years.

Why Are Comfortmaker Furnaces so Popular?

Comfortmaker is a well-known manufacturer of air conditioners, furnaces, heat pumps, and packaged products. Its furnaces are popular because they not only deliver high-quality performance and energy efficiency but are some of the most durable units on the market. Comfortmaker also backs them with exceptional warranties and no-hassle replacement policies. 

What Kind of Warranty Does Comfortmaker Offer?

Comfortmaker offers some of the most comprehensive warranties on the market. Depending upon the unit you have, you get either a standard warranty or a no-hassle replacement limited warranty.

The latter is offered only on the premium line of products and entitles the original owner to the replacement of the entire unit if any major component fails. 

The standard warranty coverage is a limited warranty on all functional parts. The original warranty period extends over five years. But if you register your unit, you can avail it for ten years. Some components, like the heat exchanger, carry a longer warranty. You can check the detailed description in your owner’s manual. 

Is Comfortmaker a Good Furnace?

Comfortmaker is certainly a good brand. Though, it mostly owes its good name to its high-quality and efficient AC units. But rest assured, the furnaces are not far behind. It offers comprehensive warranties over all its HVAC products. Most of the units are Energy Star certified and deliver impressive SEER ratings. It is a good mid-range option that guarantees cost-effective performance. 

Are Comfortmaker and Carrier the Same?

Comfortmaker is an International Comfort Products (ICP) brand. ICP, in turn, is owned by United Technologies. United Technologies is also the parent company of Carrier. So, no Comfortmaker and Carrier are essentially not the same. Both belong to the same parent company but have their own labels. 

What is the Installed Cost of a Comfortmaker Furnace/Air Conditioner?

Comfortmaker is a reputable name in the HVAC market. It produces high-quality ACs and furnaces that are durable and long-lasting. Having a Comfortmaker product installed inside your residential or commercial setup will set you back by about $2,335 to $5,475. 

How Long Does a Comfortmaker Furnace Last?

Comfortmaker furnaces are some of the most durable and long-lasting units on the market. Some users report having them for as long as forty years. While the average lifespan of a typical furnace is 15 to 30 years, Comfortmaker furnaces last around 30 years on average. This makes them some of the best furnaces ever made.

How to Remove the Gas Furnace Cover on a Comfortmaker

The gas furnace cover is usually removed when you are carrying out maintenance. In Comfortmaker furnaces, this is not a difficult task. All you need is a screwdriver. Here is how to do it. 

1. Flip the power switch to off. It’s better to disconnect the electric supply if possible. 

2. Gently lift up the combustion chamber door and pull it out.
3. Take your screwdriver and unscrew the two screws holding the gas furnace cover in place. 
Remove the cover.

How to Locate the Comfortmaker Furnace Model Number

All Comfortmaker furnaces have a data/identification plate inside the furnace’s front door, usually by the side of the burner compartment. It contains all the important information like serial number and manufacture date as well as the model number. You can locate the model number of your Comfortmaker furnace on it.

How to Change a C-Filter For a Comfortmaker Furnace

A C-filter is an important component of your Comfortmaker furnace. It keeps dust, debris, fibers, and other pollutants from entering it. Fortunately, changing one of these is not a tough task. Here’s how to do it.

1. Turn off the furnace and remove the power supply. If you have been using it earlier, let it cool down.

2. Open the panel of your unit. You will find the filter installed either in the return duct or the entrance to the blower chamber.

3. Remove the old filter by sliding it out gently.

4. Check the direction of the new filter and install it carefully.
5. Close the panel. 

Which Way Does Filter Go In On a Comfortmaker Furnace?

The right way to determine which way the filter goes on a Comfortmaker furnace is to look at the direction of the airflow. The arrows are usually given on the side of the filter. Remember that the arrow should face towards the furnace and away from the return duct.

My name is Bob Wells and I am a retired HVAC tech from Washington state. I am currently retired and no longer do much with HVAC, however, I feel like I have a lot of knowledge in the subject and I wanted to create a website where I could talk about what I've learned and help upcoming HVAC techs. Find more info about me and HVAC Training 101.