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Furnace interlock switch

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Home / Heating Appliances / Furnace interlock switch refurbished & used for sale | For Sale USA
Pack furnace interlock door - pack,

Pack furnace interlock door - pack,

$12.85
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Pcs furnace interlock - pcs,

Pcs furnace interlock - pcs,

$10.99
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Furnace door interlock - furnace,

Furnace door interlock - furnace,

$37.99
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Pcs furnace interlock door - pcs,

Pcs furnace interlock door - pcs,

$10.41
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Goodman amana furnace - goodman,

Goodman amana furnace - goodman,

$15.00
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Goodman amana furnace - goodman,

Goodman amana furnace - goodman,

$31.99
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Goodman amana furnace - goodman,

Goodman amana furnace - goodman,

$25.00
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Pcs furnace interlock door - pcs,

Pcs furnace interlock door - pcs,

$10.99
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Armstrong air r604221 - air,

Armstrong air r604221 - air,

$26.48
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Fpro100 furnace pro - furnace,

Fpro100 furnace pro - furnace,

$15.89
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Pack 0130m00243 furnace - 2-pack,

Pack 0130m00243 furnace - 2-pack,

$11.93
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Lennox 25j1301 furnace door - lennox,

Lennox 25j1301 furnace door - lennox,

$15.92
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Pack furnace interlock door - 2-pack,

Pack furnace interlock door - 2-pack,

$13.95
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Pcs furnace interlock - 2,

Pcs furnace interlock - 2,

$16.99
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Fpro100 furnace pro switch - pro,

Fpro100 furnace pro switch - pro,

$15.18
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Pack furnace interlock door - furnace,

Pack furnace interlock door - furnace,

$13.50
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Pcs furnace interlock door - 2,

Pcs furnace interlock door - 2,

$11.98
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Supco fpro100 furnace pro - fpro100,

Supco fpro100 furnace pro - fpro100,

$23.49
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Supco fpro100 furnace pro - supco,

Supco fpro100 furnace pro - supco,

$21.79
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Lennox pulse furnace - pulse, 21

Lennox pulse furnace - pulse, 21

$25.00
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Furnace interlock door - door, switch

Furnace interlock door - door, switch

$13.54
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Pihil pack furnace interlock - pihil,

Pihil pack furnace interlock - pihil,

$11.79
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Pack furnace interlock door - interlock,

Pack furnace interlock door - interlock,

$12.99
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Furnace interlock door - furnace,

Furnace interlock door - furnace,

$11.81
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Furnace interlock door switch - interlock,

Furnace interlock door switch - interlock,

$13.81
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Furnace door interlock switch - door,

Furnace door interlock switch - door,

$28.20
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Pack furnace interlock door - 2-pack,

Pack furnace interlock door - 2-pack,

$12.93
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Pack furnace interlock door - interlock,

Pack furnace interlock door - interlock,

$12.00
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Pihil furnace interlock door - interlock,

Pihil furnace interlock door - interlock,

$12.63
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Pcs furnace interlock - 2,

Pcs furnace interlock - 2,

$12.25
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Interlock door switch with - interlock,

Interlock door switch with - interlock,

$10.49
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Pack furnace interlock door - interlock,

Pack furnace interlock door - interlock,

$12.76
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Pihil furnace interlock door - furnace,

Pihil furnace interlock door - furnace,

$11.99
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Trane oem furnace - trane,

Trane oem furnace - trane,

$9.00
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Pihil pack furnace interlock - pihil,

Pihil pack furnace interlock - pihil,

$14.52
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Pack furnace interlock door - interlock,

Pack furnace interlock door - interlock,

$11.67
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Pcs furnace interlock door - furnace,

Pcs furnace interlock door - furnace,

$9.16
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New goodman 10690402 interlock - goodman,

New goodman 10690402 interlock - goodman,

$14.99
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Pack furnace interlock - interlock, door

Pack furnace interlock - interlock, door

$14.37
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Pack furnace interlock door - 2-pack,

Pack furnace interlock door - 2-pack,

$11.94
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Pack furnace interlock door - furnace,

Pack furnace interlock door - furnace,

$13.95
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Pack furnace interlock - interlock, door

Pack furnace interlock - interlock, door

$13.23
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632125r furnace door interlock - 632125r,

632125r furnace door interlock - 632125r,

$30.53
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Pack furnace interlock - 2-pack,

Pack furnace interlock - 2-pack,

$13.98
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Fpro100 furnace pro - furnace,

Fpro100 furnace pro - furnace,

$12.99
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Pihil furnace interlock door - furnace,

Pihil furnace interlock door - furnace,

$12.09
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Pihil pack furnace interlock - 2-pack,

Pihil pack furnace interlock - 2-pack,

$14.52
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Pihil furnace interlock door - interlock,

Pihil furnace interlock door - interlock,

$12.09
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Pihil furnace interlock door - pihil,

Pihil furnace interlock door - pihil,

$12.09
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Fpro100 furnace pro switch - fpro100,

Fpro100 furnace pro switch - fpro100,

$13.57
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28g1301 carling furnace - furnace, door

28g1301 carling furnace - furnace, door

$14.95
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Pack furnace interlock door - interlock,

Pack furnace interlock door - interlock,

$11.94
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Pack furnace interlock door - furnace,

Pack furnace interlock door - furnace,

$16.08
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Pcs furnace interlock door - 2,

Pcs furnace interlock door - 2,

$11.83
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Furnace interlock door switch - furnace,

Furnace interlock door switch - furnace,

$15.78
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Furnace accessory interlock - furnace,

Furnace accessory interlock - furnace,

$39.00
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Pack 0130m00243 furnace door - 0130m00243,

Pack 0130m00243 furnace door - 0130m00243,

$15.42
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Fpro100 furnace pro switch - fpro100,

Fpro100 furnace pro switch - fpro100,

$13.69
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28g13 lennox armstrong - armstrong, gas

28g13 lennox armstrong - armstrong, gas

$120.00
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Pack furnace interlock door - 2-pack,

Pack furnace interlock door - 2-pack,

$13.79
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Furnace interlock door - furnace,

Furnace interlock door - furnace,

$17.46
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Hvac furnace switch - hvac,

Hvac furnace switch - hvac,

$13.83
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Fpro100 furnace pro switch - fpro100,

Fpro100 furnace pro switch - fpro100,

$13.57
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Fpro100 furnace pro - fpro100, switch

Fpro100 furnace pro - fpro100, switch

$13.33
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Fpro100 furnace pro switch - fpro100,

Fpro100 furnace pro switch - fpro100,

$13.05
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Lennox 37h89 tridelta fp6478 - lennox,

Lennox 37h89 tridelta fp6478 - lennox,

$129.99
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Pack furnace interlock door - interlock,

Pack furnace interlock door - interlock,

$11.94
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Fpro100 furnace pro switch - furnace,

Fpro100 furnace pro switch - furnace,

$13.45
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Pack furnace interlock door - 2-pack,

Pack furnace interlock door - 2-pack,

$21.50
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Fpro100 furnace pro - furnace,

Fpro100 furnace pro - furnace,

$13.35
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Pack furnace interlock door - 2-pack,

Pack furnace interlock door - 2-pack,

$11.67
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York 024 35738 000 furnace - york,

York 024 35738 000 furnace - york,

$19.33
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Fpro100 furnace pro - fpro100,

Fpro100 furnace pro - fpro100,

$12.91
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Pack furnace interlock - 2-pack, door

Pack furnace interlock - 2-pack, door

$14.74
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Furnace door switch 250vac - door,

Furnace door switch 250vac - door,

$16.99
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Armstrong furnace r104326 - furnace, r104326-02

Armstrong furnace r104326 - furnace, r104326-02

$54.71
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Fpro100 furnace pro switch - fpro100,

Fpro100 furnace pro switch - fpro100,

$15.45
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Fpro100 furnace pro switch - fpro100,

Fpro100 furnace pro switch - fpro100,

$13.40
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New goodman 10690402 - new,

New goodman 10690402 - new,

$14.99
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Icp international comfort - international,

Icp international comfort - international,

$9.95
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Pihil pack furnace interlock - furnace,

Pihil pack furnace interlock - furnace,

$11.74
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Amana b1370819 furnace - amana,

Amana b1370819 furnace - amana,

$111.84
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Fpro100 furnace pro - fpro100,

Fpro100 furnace pro - fpro100,

$17.23
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Pihil furnace interlock door - furnace,

Pihil furnace interlock door - furnace,

$11.25
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1pc supco fpro100 furnace pro - 1pc,

1pc supco fpro100 furnace pro - 1pc,

$37.49
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Icp fast oem - icp,

Icp fast oem - icp,

$19.96
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Carling g31 504 - carling, g31-504

Carling g31 504 - carling, g31-504

$17.99
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Genuine lennox gas furnace - genuine,

Genuine lennox gas furnace - genuine,

$25.00
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Supco fpro100 furnace pro - fpro100,

Supco fpro100 furnace pro - fpro100,

$18.23
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Lennox 25j1301 furnace - lennox,

Lennox 25j1301 furnace - lennox,

$15.00
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102317 furnace door switch - furnace,

102317 furnace door switch - furnace,

$26.35
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Furnace limit switch for - rv,

Furnace limit switch for - rv,

$17.20
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Compact furnace pro switch - pro,

Compact furnace pro switch - pro,

$26.99
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Furnace limit switch l200 - furnace,

Furnace limit switch l200 - furnace,

$31.99
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Pack furnace interlock door - interlock,

Pack furnace interlock door - interlock,

$12.93
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Looking for more furnace interlock switch?

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📊95 listings · from $9 · avg $19.98
⚠️ These listings were last updated more than 12 days ago. Search for fresh listings

Browse 95 furnace interlock switch listings currently in our index. Prices range from $9 to $129.99, with an average of $19.98. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about furnace interlock switch →

Try this: hot chevy rod 1940 | wall room heater mounted | air heater lasko | chunks wood | set pump line split heat mini | 60k btu furnace | belt gripnotch bx62 browning | boiler oil fired | filled heater oil electric | registers floor oak 6

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Everything you need to know about furnace interlock switch

Whether you are looking for a brand-new or second-hand furnace interlock switch, eBay offers one of the largest selections available online. With 95 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at $9, while premium listings can reach $129.99 — giving you a wide budget spread to work with. The average price of $19.98 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.

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