Coleman Evcon DGAT056BDD furnace Parts

Evcon furnaces are made within the Coleman and York family of HVAC manufacturing. For your Coleman Evcon model DGAT056BDD, Evcon is essentially a product line associated with the same broader manufacturer group that also produces Coleman and York heating and cooling equipment.

What that means for parts and service

Because Evcon is tied to the Coleman and York family, you will commonly see shared design approaches across gas furnaces, such as standard ignition controls, flame sensors, pressure switches, and blower components.

• Use the exact model number DGAT056BDD when identifying replacement parts
• Match parts by function (ignition, gas valve, blower, safety switch) and by the original part markings
• Expect common HVAC electrical diagnostics (24 VAC control circuit plus line-voltage blower power)
• If you are troubleshooting, start with the thermostat call for heat and the furnace safety sequence

Quick identification checklist (recommended)

Use this checklist before ordering or troubleshooting:

• Confirm the rating plate shows DGAT056BDD
• Note fuel type (natural gas or LP conversion) and input rating on the label
• Record the control board and gas valve label numbers (if accessible)
• Inspect the wiring connections for looseness or heat damage
• Check the air filter and return airflow; restricted airflow can cause limit trips

Common “who made it” confusion: Evcon vs. Coleman vs. York

Name on the furnace	What it usually indicates	What to do next
Evcon	Product line/branding	Use the model number for parts matching
Coleman	Brand family	Search parts by DGAT056BDD
York	Brand family	Use the same model-based approach

Why it matters

Knowing Evcon is part of the Coleman and York family helps you troubleshoot and source parts correctly, but the model number DGAT056BDD is what ensures you get the right furnace parts and compatible replacements.

For help with safe electrical checks during troubleshooting, use our guide: how to use a multimeter to test electrical parts video.

Last updated: February 2026

A 60,000 BTU furnace (like many setups used with a Coleman Evcon furnace such as model DGAT056BDD) typically heats about 1,200 to 2,000 sq. ft. The right number depends most on climate, insulation, air leakage, and ceiling height; tighter homes heat more square footage with the same BTU output.

Quick sizing rule of thumb

Most homes land in one of these ranges:

• Warm climates / very efficient homes: closer to 2,000 sq. ft.
• Moderate climates / average insulation: around 1,500 to 1,800 sq. ft.
• Cold climates / older or drafty homes: closer to 1,200 to 1,500 sq. ft.

What changes the square-foot estimate

A BTU rating alone does not tell the whole story. These factors can swing the result a lot:

• Climate zone and winter design temperature
• Insulation levels (attic, walls, rim joists)
• Air leakage (drafts, leaky ductwork, unsealed penetrations)
• Ceiling height (8 ft vs. vaulted ceilings)
• Window type and amount of glass
• Duct condition and sizing (restricted airflow reduces delivered heat)

Simple comparison table (rule-of-thumb)

Home condition	Approx. BTU per sq. ft.	60,000 BTU coverage
Tight, well-insulated	30 BTU/sq. ft.	~2,000 sq. ft.
Average insulation	35 to 40 BTU/sq. ft.	~1,500 to 1,700 sq. ft.
Drafty, older home	45 to 50 BTU/sq. ft.	~1,200 to 1,300 sq. ft.

Why it matters

Oversizing can cause short cycling (more on/off starts, less comfort, more wear), while undersizing can leave rooms cold during the coldest weather. For the best comfort and efficiency, we recommend sizing based on the home’s heat loss and confirming your furnace’s actual output (input BTU and efficiency).

Helpful DIY tip

If you are troubleshooting heating performance, electrical checks often come up (fuses, switches, and control circuits). Our guide on how to use a multimeter to test electrical parts video can help you test safely and accurately.

Last updated: February 2026

If your Coleman Evcon furnace model DGAT056BDD turns on (you hear the blower) but does not heat, the most common cause is that the ignition sequence is failing or the burners will not stay lit. In many homes, this comes down to airflow problems (dirty filter or blocked vents) or a safety shutdown (limit switch) triggered by overheating.

Quick checks we recommend first

• Confirm the thermostat is set to HEAT and the setpoint is above room temperature.
• Replace the furnace air filter; a clogged filter is a top cause of “runs but no heat.”
• Make sure supply registers and return grilles are open and not blocked by rugs or furniture.
• Cycle power to the furnace at the service switch or breaker (off for 60 seconds, then on).
• If you have a gas furnace, confirm the gas shutoff valve is fully open.

What usually fails when the blower runs but heat does not

In a typical forced-air gas furnace like the DGAT056BDD, the blower can run even when the burners never light. These are the most common culprits:

Symptom you notice	Most likely area	What it means
Blower runs, no flame at all	Ignition system	Igniter not heating, or control not initiating ignition
Flame lights briefly, then shuts off	Flame sensing	Dirty flame sensor or poor grounding causes shutdown
Heat starts, then stops and blower keeps running	Overheat protection	Limit switch opens due to restricted airflow
Furnace “tries” repeatedly	Gas/ignition safety	System is failing a safety check and retrying

Safe DIY steps that often restore heat

• Change the filter and recheck operation.
• Inspect the flame sensor (if accessible); light oxidation can prevent flame proving.
• Check the intake and exhaust venting for blockage (snow, debris, nests).
• Look for loose or damaged wires on accessible harnesses and spade connectors.

For electrical testing, we use a meter to confirm whether switches and controls are opening or closing correctly; our guide how to use a multimeter to test electrical parts video shows the basic process.

Why it matters

A furnace that runs without heating is often in a safety lockout or overheating condition. Fixing airflow first prevents repeated limit trips, protects the heat exchanger, and helps the ignition system complete a normal heat cycle.

Last updated: February 2026

Replacing a 60,000 BTU furnace typically costs about $3,000 to $8,000 installed in most U.S. homes. For a Coleman Evcon furnace like model DGAT056BDD, your final price depends mainly on efficiency level, venting changes, and whether the job includes ductwork or electrical upgrades.

What drives the price (most common cost factors)

• Furnace efficiency (AFUE): higher efficiency usually costs more up front
• Venting and combustion air: switching to PVC venting or reworking flue piping adds labor and materials
• Gas line and shutoff updates: may be needed to meet current code or sizing
• Electrical and controls: new disconnect, wiring repairs, or thermostat upgrades
• Ductwork condition: sealing, resizing, or adding returns can change the total quickly
• Labor and access: tight closets, attics, or crawlspaces increase install time

Typical replacement scenarios (installed)

Scenario	What’s included	Typical total cost
Basic swap	Similar BTU, minimal venting changes	$3,000 to $5,000
Mid-range upgrade	Higher efficiency, some venting or drain work	$4,500 to $7,000
Complex install	Major venting changes, duct/electrical corrections	$6,500 to $8,000+

How to estimate your cost more accurately

1. Confirm the exact model and size from the furnace data plate so the replacement is properly matched (BTU input and output matter).
2. List any comfort issues (hot/cold rooms, noisy airflow, short cycling) because ductwork fixes can be part of the quote.
3. Check venting type (metal flue vs. PVC) and whether a condensate drain is required for higher-efficiency units.
4. Plan for wear items you may also replace during the job (filter rack, thermostat, gas flex connector, drain tubing).

Why it matters

A 60,000 BTU furnace that is oversized, undersized, or installed with incorrect venting can waste fuel, cycle too often, and shorten the life of parts like the igniter, flame sensor, and blower components.

Related DIY reading

• Are diy appliance repairs safe
• Must have tools for appliance repair
• How to find your appliance model number (and what it means for parts)

Last updated: February 2026