Repair or Replace Your Furnace

Comfort Connection Heating & Cooling repairs and replaces gas furnaces across Gresham, Troutdale and Fairview. On most no-heat calls, the homeowner asks the same question before the technician has the front cover off: fix it or start over? This guide gives you the test Comfort Connection technicians use, the math behind it, and the cases where the answer is clear. It is written for the furnaces we actually see in Gresham: 1970s to 1990s homes, many with the original unit.

The quick test

Four questions settle most cases.

The math: a rule of thumb, and what it is not

A common rule of thumb multiplies the repair cost by the furnace’s age in years. If the product is above a set threshold, the rule says replace; below it, repair. The version in wide circulation uses a fixed dollar threshold. Example in words: a 16-year-old furnace facing a mid-sized repair fails the test, while a 6-year-old furnace facing the same repair passes it.

Two cautions. First, this is a general rule, not a Comfort Connection price or policy. Second, the rule ignores efficiency. An 80% furnace from 2004 that still runs is burning more gas than a new 95%+ unit would, and that cost shows up on the NW Natural bill every month, not on the repair invoice. Comfort Connection technicians use the rule as a starting point and then look at the actual furnace.

When repair is the right call

Repair makes sense when all three are true: the furnace is under about 10 years old, the problem is a single failed part, and there is no safety issue.

Common single-part failures Comfort Connection repairs in Gresham homes:

• Hot surface ignitor. The most frequent no-heat cause. Ignitors are consumable parts and fail from age and thermal stress.
• Flame sensor. A dirty or worn sensor makes the furnace light and then shut down within seconds. Often a cleaning, sometimes a replacement.
• Pressure switch or clogged condensate line on high-efficiency units.
• Blower capacitor or inducer motor.
• Thermostat or control board fault.

These repairs cost a fraction of a new furnace and return years of service on a unit with life left in it. Repair details and the diagnostic process are on the furnace repair page.

When replacement is the right call

Replacement makes sense when any one of these is true:

• The heat exchanger is cracked.
• The furnace is past 15 years and needs a major component such as a heat exchanger, blower motor assembly, or control board on a model with limited parts availability.
• The repair cost multiplied by the age fails the rule of thumb and the furnace has already had one significant repair.
• Parts are no longer available or are on long backorder. This happens with furnaces from the 1990s and early 2000s.
• Rooms have never heated evenly and the furnace was oversized or undersized from the start. A repair fixes the part, not the design.
• You are planning to add central air or a heat pump. Replacing the furnace at the same time avoids paying for labor twice.

Replacement options, warranties and the installation process are on the furnace replacement page.

What a Comfort Connection technician does at a no-heat call

Comfort Connection charges a diagnostic fee starting at $129 for a no-heat call. The technician inspects the heat exchanger, tests the ignition and safety circuits, checks gas pressure and airflow, and identifies the failed part. You then get two things in writing before anyone touches a wrench:

1. A repair option: the part, the labor, the total, and how long the repair is warranted.
2. A replacement option when the furnace’s age or condition makes it worth considering: the recommended size and efficiency, the installed price, and the financing options.

You choose. Technicians are not paid to push replacements, and there is no pressure to decide on the spot. If you choose the repair, the diagnostic fee is a separate charge and is not credited toward the repair. If you choose replacement, the diagnostic fee is credited toward the new system.

How long furnaces last in Gresham homes

A gas furnace in a Gresham home typically lasts 15 to 20 years. Two local factors push units toward the short end of that range.

East wind load. The Gorge drives cold east wind through Gresham, Troutdale and Fairview every winter. Furnaces in those homes run longer cycles and more of them. More run hours means more ignitor cycles, more blower hours and faster heat exchanger fatigue.

Maintenance history. A furnace that has had an annual tune-up, with the flame sensor cleaned, the burners checked and the filter changed, reaches the far end of the range. A furnace that has not been opened in a decade usually does not. Comfort Connection’s standard furnace tune-up starts at $159, and the Comfort Club maintenance plan covers it annually.

If your furnace was installed when the house was built in the 1980s or 1990s, it is past its design life regardless of how it sounds.

What replacement costs

Furnace replacement starts at $4,500 installed, a heat pump starts at $5,000 and a dual fuel system starts at $9,500. Furnace repairs start at $200.

Installed furnace prices in Gresham depend on size, efficiency, staging and the venting and duct work the house needs. Comfort Connection publishes its ranges from the last 12 months of local installations, along with financing examples, in the furnace replacement cost guide.

Comfort Connection Heating & Cooling has been family owned in Gresham since 1998, holds Oregon CCB #209520, carries an A+ BBB rating and a 4.9-star Google rating across more than 170 reviews. Furnace installations carry a 10-year parts warranty.

Frequently asked questions about repairing or replacing a furnace in Gresham