MORTEX PRODUCTS

Voomi Supply carries Mortex Products parts and equipment, in blower motors, blower housings and wheels, hot surface igniters, limit switches, flame sensors, control boards, thermal expansion valves, roof jacks and utility jacks, plus Mortex gas furnaces and a mobile home air handling unit. Mortex Products is listed in the ACHR industry directory as an HVACR manufacturer based in Fort Worth, Texas, and these parts replace the components that wear out in furnaces and air handlers, from the ignition system to the blower. Every order ships with Voomi's 30-day return policy and free help matching a Mortex part to your unit.

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Mortex Parts at a Glance

Part

What it does

Examples in titles

Blower motors

Drive the blower wheel that moves air through the furnace or air handler

Mortex R65BP0001, 1/2 hp, 230 VAC; R65BV0023R X-13, 3/4 hp, 115 VAC; M/H gas 3/4 hp ECM multi-speed blower motor

Blower housings, wheels and mounts

The housing and wheel that move the air, and the arm that holds the motor

Mortex R69AD0018 blower housing and wheel; R66AB0066 motor mount arm

Hot surface igniters

Glow to light the burners during the ignition sequence

Mortex R68GF0005

Flame sensors

Confirm that the burner flame is present

Mortex R68GF0004

Limit switches

Safety switches that open when the furnace overheats

Mortex R68CA0005 and R68DD0014

Control boards

Run the furnace sequence of operation

Mortex R68GF0014

Thermal expansion valves

Meter refrigerant into the evaporator coil

Mortex R72BD0006, 2.5 to 5 ton

Roof jacks and utility jacks

Pass the furnace flue or duct through the roof

Telescopic roof jacks 90-RJF1729-AL and 90-RJS1729-AL; extension 90-INSXT10-AL; crown 90-RJCRWN-AL; utility jack 90-RJS3868-AL

Equipment

Complete units

Mortex G18D090CA4BC downflow gas furnace, 90,000 BTU/hr, 115V, 80% AFUE; E30B5D020ABE mobile home air handling unit, 20 kW, 5 ton

Where Each Part Fits in the Furnace Sequence

Typical gas furnace timing is shown below. Exact times vary by model, so use the service manual for your furnace.

Stage

What happens

Inducer pre-purge

The inducer runs for about 10 to 60 seconds before ignition

Igniter warm-up

The hot surface igniter heats for about 10 to 30 seconds

Gas valve trial

The valve opens for about 4 to 7 seconds while the control looks for flame

Flame sensing

A flame sensor typically reads about 2 to 6 microamps DC. No flame means the control closes the valve and retries.

Blower on delay

The blower starts about 30 to 90 seconds after ignition

Blower off delay

The blower keeps running about 60 to 120 seconds after the burners shut off

Limit and rollout

Open switches stop the burners to protect against overheating

Mobile Home Roof Jacks

Item

What to know

Roof jack

Carries the flue or duct through the roof. Some jacks suit downflow furnaces in mobile homes with flat roofs, while pitched roofs use slope-roof adapters, so match the jack to the roof type and furnace airflow direction.

Telescopic roof jack

Adjusts in length to reach the roof opening

Jack extension

Adds length, such as the 10 in galvanized steel 90-INSXT10-AL

Crown

Top cap for the jack, such as 90-RJCRWN-AL

How to Find the Right Mortex Part

Check

What to compare

Model and serial number

Read both from the data plate of the furnace or air handler

Part number

The number on the old part, such as R68GF0005, or the part number in the listing

Motor specs

Horsepower, voltage (such as 115 VAC or 230 VAC), speed type and mounting, such as bracket mounting

Roof jack

Roof type, jack length and furnace airflow direction

Expansion valve

Tonnage range, such as 2.5 to 5 ton

Browse related categories: furnace control boards, ignition control boards, blowers & inline duct fans, air vents & roof maintenance and gas furnaces.

Frequently Asked Questions

Mortex Products is an HVACR manufacturer, listed in the ACHR directory in Fort Worth, Texas, that makes furnaces, air handlers and coils. Voomi Supply lists its blower motors, ignition parts, controls, roof jacks and complete units on this page.

Start with the model and serial number on the data plate of your furnace or air handler, then match the part number from the old part. Motors also need the right horsepower, voltage and mounting. If you are unsure, send us the model number and we will help match it.

It glows hot to light the gas when the furnace calls for heat. During startup the igniter typically warms for about 10 to 30 seconds before the gas valve opens, and if the flame is not sensed the control retries and then locks out. See ignition control boards.

A limit switch is a safety device that opens when the furnace gets too hot, which shuts off the burners. A limit or rollout switch that stays open is one of the common fault groups, and it often points to restricted airflow, so check the filter and blower before replacing the switch.

A roof jack is the fitting that carries the furnace flue or duct through the roof. In mobile homes, some jacks suit downflow furnaces on flat roofs while pitched roofs use slope-roof adapters, so fit depends on roof type and furnace orientation.

Use the horsepower, voltage and speed type specified for your unit. A different rating can change airflow or overload the motor, so match the original, or ask us before you substitute. See blowers & inline duct fans.