DDC HVAC/R Controllers
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$350.00or Best OfferFree shipping- Refurbished · Alerton$1,025.78Free shipping
- Refurbished · Alerton$282.03Free shipping
- Pre-Owned · Alerton$325.00or Best OfferFree shipping
- Brand New · Alerton$500.00or Best Offer$10.00 shipping
- Pre-Owned · Alerton$575.00Free shipping
- $14.00$6.82 shipping
- Pre-Owned · Siemens$49.99or Best Offer$5.19 shipping
- $14.00$8.19 shipping
- Pre-Owned · Johnson Controls$99.99$12.99 shipping
- Pre-Owned · Siemens$49.99or Best Offer$12.95 shipping
- Pre-Owned · Automated Logic$31.33$13.09 shipping
- Pre-Owned · Honeywell$825.00or Best OfferFree shipping
- Refurbished · Alerton$1,176.91Free shipping
- Brand New · Alerton$1,632.68Free shipping
- Brand New · Alerton$1,870.68Free shipping
- Brand New · Alerton$750.00or Best Offer$10.00 shipping
- Pre-Owned · Alerton$125.00or Best OfferFree shipping
- $172.50Free shipping
- Brand New · Honeywell$750.00or Best Offer$12.75 shipping
- $151.99Was: $189.99was - US $189.99or Best OfferFree shipping
- Pre-Owned · Alerton$65.00$7.60 shipping
- Pre-Owned · Alerton$22.00or Best Offer$15.00 shipping
- $415.50Free shipping
- $14.00$8.19 shipping
- $99.99Free shipping
- Refurbished · Automated Logic$593.81Free shipping
- Pre-Owned · Alerton$494.95Free shipping
- Refurbished · Automated Logic$712.81Free shipping
- $179.00or Best Offer$8.19 shipping
- Refurbished · Automated Logic$714.00Free shipping
- Pre-Owned · Alerton$725.00Free shipping
- $375.00Free shipping
- Pre-Owned · Alerton$561.50Free shippingOnly 1 left!
- $167.50Free shipping
- Pre-Owned · Alerton$380.50Free shipping
- $250.00or Best Offer$15.00 shipping
- $650.00or Best Offer$20.60 shipping
- Pre-Owned · Alerton$775.00Free shipping
- Pre-Owned · Alerton$775.75Free shipping
- Pre-Owned · Alerton$396.00Free shipping
- $50.00$8.71 shipping
- Pre-Owned · Alerton$425.50Free shipping
- $500.00or Best Offer$9.99 shipping
- $500.00or Best Offer$7.95 shipping
- Pre-Owned · Honeywell$120.00Was: $150.00was - US $150.00or Best Offer$23.87 shipping
- $79.95or Best Offer$12.00 shipping
- $765.00Free shipping
- Brand New · Trane$39.00or Best OfferFree shipping
- $845.00Free shipping
- Pre-Owned · Alerton$535.95Free shipping
- Pre-Owned · Automated Logic$400.00or Best Offer$15.00 shipping
- Brand New · Automated Logic$1,800.00or Best Offer$8.19 shipping
- Brand New · Honeywell$550.00$18.00 shipping
- Pre-Owned · Alerton$340.00or Best OfferFree shipping
- Pre-Owned · Alerton$785.00$15.50 shipping
- $184.50Free shipping
- $205.00or Best OfferFree shipping
- Pre-Owned · Honeywell$120.00Was: $150.00was - US $150.00or Best Offer$23.87 shipping
- $167.00Free shipping
Best selling
Top rated
- 100% agree - Would recommend$13.39 New
- 100% agree - Would recommend$74.88 New$45.00 Used
Review highlights
Recommended by our customersFurnace control board
By huge_tidalwave
This board is of excellent quality. It replaced my defective one very well; some wires changed their location but they a... see all reviews
Verified PurchaseNot fancy, but a good replacement
By randy_r
Although this board doesn't have many features, it had everything I needed to replace my old board that had failed. It ... see all reviews
Verified PurchaseUsed for an outdoor wood burning furnace...works fantastic!
By hanoftherox
Very easy to program. Wiring instructions were easy to follow and applied to my application. Was able to cut the probe w... see all reviews
Verified PurchaseWorked as advertised, better than the older original.
By bmarhofer218
This was an upgrade to my existing older model, simple and easy installation, worked as advertised. Would have been nice... see all reviews
Verified PurchaseFixed my furnace issue
By beezler123
Fixed an issue where gas control valve wouldn’t open. Had replaced valve earlier but that wasn’t the issue. This did t... see all reviews
Verified PurchaseGood Flame Detector/CAD Cell
By wjcandee
This is a good quality replacement CAD cell at a good price. A certain design of boiler, across several manufacturers, ... see all reviews
Verified PurchaseFit perfectly and works perfectly
By jwhabdas
It was a cheap fix for my A/C compressor unit. This particular unit is from the seventies and is still working. You need... see all reviews
Verified Purchase
