Cleaning · Buying comparison
Do not pay more for features both vacuums already have. Start with what changes, then decide whether those differences solve a problem in your cleaning routine.
Larmine Editorial Team · Documentation reviewed October 10, 2026
Featured image: AI-generated editorial illustration of a living room floor and rug, not a product photograph or performance test.
How we compared: This is a comparison of published specifications, not a hands-on performance test. We have not measured pickup, noise, battery endurance on floors or long-term reliability.
Two models, two buying decisions
If the IY143H costs substantially less when you shop, it is our starting point for a budget-focused comparison. Consider the IZ377H when its specific differences matter to you—not simply because its name sounds more advanced.
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Shark Cordless Pet
Exact model IY143H
A sensible shortlist choice when keeping the purchase cost down matters more than buying the longer advertised runtime.
- TurboPro nozzle
- Crevice tool and pet multi-tool listed in the Amazon offer
- Shares the key filtration and automatic floor features below
Trade-off: The shorter advertised maximum does not tell us how long it will run on your floors.
Check IY143H on AmazonPaid link. Opens in a new tab.
Shark PowerPro Plus
Exact model IZ377H
Worth comparing if the longer stated maximum is important and you are comfortable paying the current premium.
- PowerFins nozzle
- 8-inch duster crevice tool listed in the Amazon offer
- Not an exclusive upgrade to HEPA or FloorDetect
Trade-off: Different nozzle branding is not proof of better real-world cleaning.
Check IZ377H on AmazonPaid link. Opens in a new tab.
What actually changes?
| Feature | IY143H | IZ377H |
|---|---|---|
| Nozzle | TurboPro | PowerFins |
| Advertised maximum runtime | 40 minutes* | 50 minutes* |
| FloorDetect | Yes | Yes |
| Self-cleaning brushroll | Yes | Yes |
| HEPA and Complete Seal | Yes | Yes |
| Handheld conversion and LED headlights | Yes | Yes |
| Tools listed in the selected Amazon offers | Crevice tool; pet multi-tool | 8-inch duster crevice tool |
*Both runtime claims are measured at the handvac in standard mode. Amazon included-components fields checked October 10, 2026: IY143H lists a battery, charger, crevice tool, pet multi-tool and vacuum; IZ377H lists an 8-inch duster crevice tool. The latter field is not a complete carton inventory; do not infer missing standard components from that short list. Confirm the selected offer before purchase. Manufacturer feature sources: IY143H and IZ377H.
Three reasons not to choose by the name alone
FloorDetect is shared. Shark describes it as adapting brushroll speed to floor type. It is not, by itself, evidence that one model senses dirt or cleans more thoroughly.
The runtime gap has a condition attached. Ten extra advertised minutes may interest you, but it is not a guarantee of ten extra minutes vacuuming carpet. Treat the maximum as a specification to investigate, not a promise that an entire home will be finished on one charge.
The kit should fit the job. Before buying, write down the places you actually clean: stairs, sofa seams, baseboards or rooms with mixed flooring. Then verify that the selected offer includes the attachments you need. Do not rely on a family-level review or a different color variant’s bundle.
Our buying recommendation
Start with IY143H if the current saving is meaningful. There is no reason to pay an upgrade premium solely for features shared by both models.
Keep IZ377H on your shortlist if its documented differences matter. Check the price gap and the exact kit. If you need proof of superior carpet pickup or longer powered-floor endurance, look for a test of these exact models before paying more.
A good purchase is the model that fits your needs at an acceptable price—not necessarily the model with the longer feature name.
Back to the two model cards ↑Check these details before checkout
- Match the model number. IY143H and IZ377H are the products compared here. Similar Shark names are not interchangeable.
- Compare like-for-like offers. Check new versus used or renewed condition, seller, included accessories and return terms.
- Plan for maintenance. Read the exact model’s instructions for filters and brushroll care. Confirm replacement-part compatibility rather than assuming a generic Shark part fits.
- Consider the task. If your main problem is wet stains on upholstery rather than dry debris, a different appliance category may be more relevant. See our Little Green versus StainStriker comparison.
Common buying questions
Is the PowerPro Plus definitely better?
We cannot establish that from specifications alone. The right choice depends on the price gap and whether its differences matter to you. This article does not award a tested performance winner.
Should I choose the one with more reviews?
Do not use the review total as a substitute for checking the exact variant. Read which model a review describes, particularly when a listing groups several products together.
Why are there no fixed prices here?
Offers and sellers change. Compare the current price, condition and bundle on the retailer page before deciding.
Sources and comparison limits
This comparison uses the following exact-model manufacturer pages, reviewed October 10, 2026. Retailer bundles may differ. We have not independently tested the manufacturer’s claims.