The short answer
$300–$900
The board is the furnace’s brain, and on an older furnace it can cost more than the machine is worth. You get both numbers — repair and replace — before deciding.
Typical industry ranges for Western Washington — not a quote. Your exact price comes upfront, before any work starts, and you approve it first.
What moves the price
Which board your furnace takes
A simple ignition control costs far less than an integrated board for a two-stage or variable-speed furnace. Some are still stocked; some are special order.
OEM or universal
Some furnaces accept a universal board; many will only work correctly with the manufacturer part, which costs more.
The age of the furnace
On a 15-plus year furnace, a $700 board is often the moment to price a replacement instead. We show you the comparison rather than just installing it.
What killed it
Boards die from power surges, water from a blocked condensate drain, and overheating. Replacing the board without fixing that gets you a second dead board.
Told you need a new board?
Get a second opinion with the replace-instead numbers beside it. Exact price upfront, and no pressure either way.
Get My Upfront Quote60 seconds online · or call (206) 486-6373
Typical ranges at a glance
Typical industry ranges for Western Washington — not a quote. Your exact price comes upfront, before any work starts, and you approve it first.
Why homeowners hand it to us
- You approve the price first. Upfront quote before a single screw turns.
- Same-day service. Book in a minute, hear from a tech within 1 business hour.
- 500+ jobs done by 4.9★ rated, professional technicians.
- Fixed right, guaranteed. If it’s not right, we make it right.
Quick answers
How do I know the board has actually failed?
Boards are over-diagnosed. Common real signs are no response at all with good power, a blinking fault code pointing at the board, or relays that will not pull in. We rule out the cheaper parts first, because usually it is one of them.
Is a control board worth replacing on an old furnace?
Sometimes not. If the furnace is past 15 years and the board is at the high end of the range, that money often belongs in a replacement instead. You get both figures and the honest recommendation.
Can a power surge kill it?
Yes, and it is one of the most common causes. Water from a plugged condensate drain dripping onto the board is the other.
Ranges are for websites. Quotes are for you.
Book in 60 seconds — a tech reaches out within 1 business hour and your exact price comes before any work.
Get My Upfront Quote60 seconds online · or call (206) 486-6373
More: all cost guides · troubleshooting guides · 24/7 emergency · furnace: repair or replace?