DiTek AC Voltage Surge Protector — 50kA
About this product
Lightning strikes and utility voltage spikes kill more AC compressors than any other failure mode. A $60 surge protector is cheap insurance vs. a $1,500+ compressor replacement.
What it does
Single-phase 120/240V surge protector with 50,000 amp surge rating. Installs at the outdoor disconnect box, protecting the compressor, fan motor, and control board from grid-side voltage transients.
Why you'll want it
- Protects the single most expensive component in your AC system (the compressor)
- 50kA rating handles major utility surges and nearby lightning strikes
- Essential in storm-prone regions (Florida coast, Minnesota spring thunderstorms)
- Self-resetting — no fuses to replace
- Visual LED indicator shows protection status
Installation
Mounts inside or next to the outdoor AC disconnect. Wired across the hot legs by a qualified electrician or HVAC tech. Install time: 10-15 minutes.
What's in the box
- DiTek 50kA surge protector
- Mounting bracket
- Installation instructions
Common questions
Yes. Whole-home protectors handle most surges but don't catch everything. Adding point-of-use at the AC disconnect is standard for high-value equipment.
It handles near-miss surges (induction, ground rise). Direct lightning strikes can exceed any protector's rating — always unplug critical electronics during severe storms.
The surge protection modules degrade over time and with each surge event. Most units last 5-10 years. The LED indicator tells you when it needs replacement.
Specifications
| Type | HVAC Parts |
| Returns | 7 days on parts |
Will this fit my system?
This is part number DITEK-DTK120240CM
The number is printed on the part you are replacing — pull the old one and read it, or check the label inside the furnace door. If your number matches, this is the part.
Not sure which part failed? Start from the symptom, or call (888) 762-1334 before you order. We are licensed HVAC contractors and will confirm the right part for your model. If it does not fit, parts can come back within 7 days of delivery.
Commonly replaced at the same time
These fail alongside the part you are looking at.
Get told before the next part fails
One email a week from a working HVAC contractor: the failure we are seeing that week, how to test for it, and what it costs to fix yourself. Filter reminders on your schedule. No discount codes, no countdown timers.
What customers are saying
Saved $2,400 vs local contractor
Got quoted $9,200 from a local HVAC contractor for a furnace replacement. Found Furnace Direct and got the exact same Goodman unit for under $5k delivered. My installer couldn't believe the price and installed it in one day. Runs perfectly.
Fast shipping, exactly as described
Ordered on a Tuesday, pallet arrived Friday. Unit was packed well, no damage, all factory sealed. Andrew answered my sizing question over the phone and got me the right model. Couldn't be happier with the purchase.
Installer said same one he'd buy at supply house
My HVAC guy said he pays basically the same price at his wholesale supply house. The markup contractors add is insane. Furnace Direct cut the middleman out entirely. Will recommend to everyone I know.
Heating my 2,200 sq ft home perfectly
Installed my 96% AFUE furnace a couple months ago. Heats my 2,200 sq ft home perfectly, and my gas bill dropped noticeably compared to the old unit. Great product, great price, great experience from start to finish.
Saved enough to pay for the install
Math was simple: 3 contractor quotes all over $8k. Furnace Direct plus local installer was under $5,500 total. Saved enough to basically pay for the install myself. Quality is identical to what contractors charge a fortune for.
No-pressure, honest pricing
Called a few HVAC companies first — every single one wanted to schedule an "in-home consultation" before giving me a price. Furnace Direct just showed me the price. Bought online, shipped next day, done. This is how it should work.
Questions About This System?
Send a few photos of your current setup and we'll get you a real quote — and let us know if you need installation or just want the unit shipped.
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(888) 762-1334