D-Shape vs O-Shape Non-Electric Bidet Seat: Which One Should You Buy?

Choosing between a D-Shape and O-Shape bidet seat comes down to one crucial factor: your toilet's profile.

If you've started shopping for a non-electric bidet seat, you've probably run into the same question twice: D-Shape or O-Shape? It’s not just a design preference—it is the single thing that determines whether the seat will actually fit your toilet bowl. Get it wrong, and you’ll be dealing with visible overhangs, a wobbly fit, or an annoying return process.

The good news: figuring out which one you need takes about thirty seconds. Once you know your toilet shape, the two Conor Elara non-electric models are otherwise nearly identical—same high-end features, same price, and same easy installation process.

Here is exactly how they compare for Kiwi homes.

How to Tell If You Have a D-Shape or O-Shape Toilet

Look directly down at your toilet bowl from above, focusing on the front edge:

• Flat or squared-off front edge → D-Shape: This is the most common profile in New Zealand homes built or renovated in the last decade, reflecting the modern shift toward square-edged bathroom fixtures.

• Fully rounded front, no straight section → O-Shape: More common in traditional Kiwi villas, older homes, and compact apartment suites.

Why Getting the Shape Right Matters

Fitting the wrong shape doesn't just look mismatched—an O-Shape seat on a D-Shape toilet (or vice versa) leaves gaps at the front, creates an insecure fit, and can misalign the wash nozzle enough to reduce cleaning performance.

Tip: If you are still unsure after checking, take a photo of your toilet bowl from directly above and front-on. Conor’s support team can confirm compatibility for you before you order!

Not sure yet? Compare them side-by-side: [Shop D-Shape Bidet Seats in NZ] | [Shop O-Shape Bidet Seats in NZ]

Features Compared: What’s the Same on Both Models?

Once you’ve selected the correct shape, there is no "better" or "worse" model between the two. Both the D-Shape and O-Shape Conor Elara models share the exact same high-quality specifications:

Feature	Conor Elara D-Shape	Conor Elara O-Shape
Plumbing Compliance	WaterMark Certified	WaterMark Certified
Nozzle Technology	Self-cleaning dual nozzles	Self-cleaning dual nozzles
Seat Mechanisms	Soft-close seat & lid	Soft-close seat & lid
Power Requirement	Non-electric (Water pressure only)	Non-electric (Water pressure only)
Material	Scratch-resistant Duroplast (UF)	Scratch-resistant Duroplast (UF)
Weight Capacity	150 kg	150 kg
Warranty	2 Years	2 Years

The only genuine difference is the outer seat geometry—engineered specifically to mirror each toilet profile so it sits flush without gaps.

Installation: Are There Any Differences?

Both models install using the exact same process: connecting via the included T-valve directly into your cold water isolation tap. In line with New Zealand plumbing standards (G12/AS1), engaging a licensed plumber ensures your installation includes proper backflow protection and fully complies with local building codes.

Mounting Hole Spacing

There is a minor difference in mounting-hole tolerance between the two designs:

• D-Shape Model: Accommodates toilet pan mounting holes up to 180 mm apart.

• O-Shape Model: Accommodates mounting holes up to 170 mm apart.

If your toilet's bolt holes fall outside these ranges, Conor can supply an extension mounting bracket—simply measure the distance between the two holes on your toilet pan before ordering.

Price Comparison: D-Shape vs. O-Shape

Both models are priced identically ($149 NZD / regular price), coming complete with the installation hardware, 2-year warranty, and local NZ delivery options. Choosing based on shape means you never have to trade off key features or pay a premium for one design over the other.

Quick Decision Guide

If your toilet has...	You need...
A flat or squared front edge	D-Shape Bidet Seat →
A fully rounded or oval front	O-Shape Bidet Seat →
Unsure of the shape?	Send a quick photo to the Conor support team for a compatibility check!

Frequently Asked Questions (FAQ)

Do D-Shape and O-Shape bidet seats cost the same in New Zealand?

Yes—both the Conor Elara D-Shape and O-Shape non-electric bidet seat models are priced identically, featuring the exact same build materials, warranty, and plumbing fixtures.

Which shape is more common in NZ homes?

D-Shape toilets are widely found in newer builds and modern bathroom renovations across New Zealand. O-Shape (rounded) toilets are more common in older homes, traditional character properties, and compact apartment suites.

Can I take my bidet seat with me if I move house?

Yes! Because non-electric bidet seats replace your existing seat and connect directly into the standard water isolation valve, you can easily remove the unit when moving. If your new home has a different toilet bowl shape, you can simply order the corresponding seat shape for your new toilet pan.

Will the wrong shape seat still attach to my toilet?

While it may physically bolt down in some cases, an incorrect shape will not sit flush. This creates uneven pressure on the hinges, risks cracking the seat, and can misalign the spray nozzles—greatly impacting wash comfort and effectiveness. It is always best to double-check your toilet shape prior to ordering!