Fresno Furnace Repair vs. Replacement: How to Make the Call

Your furnace goes out. It's January. The tech is in your utility room with a flashlight and a clipboard, and he's about to give you a number.

Now what?

Most people make this call in about ten minutes while standing in a cold house. We've watched it happen a hundred times. So let's actually think it through.

The Dollar Ranges You're Actually Working With

On the repair side, small jobs -- an igniter swap, a dirty flame sensor -- might run you $150 to $400. But if it's a blower motor or a control board, you're looking at $500 to $1,000. Heat exchanger work starts around $1,500 and usually runs higher.

For new equipment in Fresno, a standard 80% efficiency furnace installed runs somewhere between $3,500 and $5,500. Bump up to 95%+ efficiency and you're probably in the $5,000 to $8,500 range. Variable-speed setups push past that.

But here's what trips people up: comparing just the sticker prices. A 15-year-old furnace running at 78% efficiency wastes almost a quarter of every dollar you send to the gas company. A new 95%+ unit doesn't. That gap adds up, especially over a Fresno winter.

How Old Is the Thing?

Age is the biggest factor in this decision. A furnace that breaks down at 8 years old is a completely different situation than the same problem at 18.

Under 10 years old, you're almost always better off repairing it. The system still has years of real life ahead of it, parts aren't hard to find, and one breakdown doesn't mean more are lined up right behind it.

Between 10 and 15 years, there's no clean answer. What actually broke matters a lot -- a dirty flame sensor on a 12-year-old furnace isn't the same call as a blown control board. Think about whether this is the first time you've had a problem or whether you've been patching it for a couple years already. Some furnaces in this range are still running strong. Others have been on their last legs for a while.

Past 15 years, most contractors -- us included -- lean toward replacement. Not to sell you something. It's just that older systems tend to start failing in batches. Fix the igniter in October and you're calling about the blower motor in March.

The 50% Rule

Industry rule of thumb that actually holds up: if the repair costs more than half of what replacement would run, replace it. Practically speaking for a Fresno home -- under $1,000 on a younger unit, just fix it. Somewhere in the $1,500 to $2,500 range on older equipment, sit with it for a minute. Above $3,000 on a furnace that's already lived a full life, the math usually isn't on the repair's side.

Not a hard law. But a solid place to start.

The One Call That's Not About Money

Cracked heat exchanger. If that's what your tech found, the repair-or-replace calculation doesn't really apply anymore.

Combustion gases can leak into the air circulating through your home when the heat exchanger cracks -- and that includes carbon monoxide, which has no smell and no color. What people sometimes notice before they realize what's wrong: the burner flame turned yellow or orange, there's soot building up near the unit, or people in the house have been dealing with headaches they can't place.

You can't patch a heat exchanger. The unit is done.

What Common Repairs Actually Cost Around Here

To give you something to check your quote against: igniter replacement runs $200 to $450, flame sensor $100 to $250, thermostat $200 to $500, blower motor $400 to $1,000, control board $500 to $900, and heat exchanger $1,500 to $3,000 and up.

One Thing Worth Asking About Before You Decide

If you're replacing the furnace anyway, ask about heat pumps. A heat pump handles both heating and cooling in a single system -- so you'd be getting rid of your separate AC unit at the same time. Fresno's winters are mild enough that heat pumps work well here, and the payoff on the cooling side during summer is real.

Not right for every budget or every house. But ask the question before you commit.

How to Think Through It

Get the repair cost in writing. Confirm the furnace age. Run the 50% check. Look at your gas bills over the past year or two -- older inefficient equipment shows up there. Factor in how long you're staying in the home. And get at least two quotes before you sign anything over $1,000.

Borgen's Construction Serves Fresno and Clovis

We do honest furnace repair and furnace replacement, and we don't push you toward the more expensive option when it doesn't make sense. You'll get a straight diagnosis, real pricing up front, financing on replacements if you need it, and a written warranty on every installation.

Call (559) 399-5014 or head to borgensconstructioninc.com to set up a free consultation.