RectorSeal Kickstart T05 Hard Start Kit
About this product
A hard-start kit is cheap insurance for your AC compressor — it lets the compressor reach full running speed up to 10× faster on startup, reducing stress on the motor and extending compressor life.
What it does
A hard-start device is a capacitor/potential-relay combo that provides a burst of extra torque to the compressor at startup. This Kickstart T05 is OEM-approved by Ducane, Goodman, and York for permanent install in 1-3 ton single-phase AC and heat pump compressors (208-265V).
Why you'll want it
- Extends compressor life — every startup cycle without a hard-start kit strains the motor windings
- Cheap insurance vs. a $1,500-$3,000 compressor replacement
- Helps units start cleanly in low-voltage conditions (brown-outs, long wire runs)
- OEM-approved for permanent installation
Installation
Wired in parallel with the existing run capacitor by a qualified technician. Install time is typically 10-15 minutes. No modifications to the compressor itself.
What's in the box
- Kickstart T05 hard-start device
- Wiring pigtails
- Mounting hardware
- Installation instructions
Common questions
Not strictly — most new AC units start fine. But installers often add one anyway because it protects the compressor (the most expensive component) at a low upfront cost.
No. Kickstart is OEM-approved by Ducane, Goodman, York, and others. It's designed for permanent install.
The T05 covers 1-3 ton (single phase) compressors. For 3.5-5 ton, use a different model — call us.
Common questions
Will it fit my unit?
It covers single-phase 1–3 ton AC, heat pump, and refrigeration compressors at 208–265V.
Is it genuine?
Yes — this is the genuine RectorSeal Kickstart T05 (96503), not a look-alike copy.
Does it ship nationwide?
Yes — we ship it nationwide with tracking.
Specifications
| Type | HVAC Parts |
| Returns | 7 days on parts |
Will this fit my system?
This is part number RS-96503
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