Fits after modification — plan for sheet-metal work

Your N431226G151 has a replacement — with one honest catch.

Same 12,000 BTU/hr, same 230V. Plan on a minor cutout trim in the field to take the AT12RNS10 — no adapter plate needed.

Also sold as McLean · Hoffman · Pentair · nVent — N431226G151 — 11,000 BTU/hr · 230V · NEMA 4X · R-134A

Yours

N431226G151

43.0″ × 11.5″ × 14.0″ · 127 lbs

Modified fit

Ours, in production

VoltAire AT12RNS10

43.99″ H × 12.30″ D × 16.39″ W · 96.9 lbs · 24% lighter

Fits After Modification Fit details ↓

You'll order: 1× AT12RNS10 — $6,492. Plus a minor cutout trim in the field.

nVent published distributor price $14,077 → yours $6,492 $7,585 stays in your budget

Your Replacement

AT12RNS10

Fits After Modification

12,000 BTU/hr • 230V • NEMA 4X

Availability Built to Order 4-6 weeks — made in Orlando, FL

Includes Unit only Minor cutout trim in the field 30-day price lock · no-obligation quote

Built Orlando, FL — UL/cUL Listed

Need It Faster?

The AT12RNW10 is on the shelf right now — same 12,000 BTU/hr, same 230V, in the standard off-white cabinet. It ships next business day instead of 4-6 weeks — and it costs $1,821 less.

Take the in-stock AT12RNW10 $4,671

nVent N431226G151 — published distributor price

$14,077 $7,585 stays in your budget (54% less)

Your order total

$6,492

Unit price. Minor cutout trim done in the field.

Start My Order

Backed by VoltAire’s 12-month warranty (PDF) · UL 484 · Made in Orlando, FL 🇺🇸

RSP Supply published price, Jul 2026. nVent sells through distributors and doesn't publish list prices — distributor quotes vary.

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Replacements
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N431226G151

Existing Unit

N431226G151

11,000 BTU/hr (3223) • 230V

Brand nVent

Series N4312

Capacity 11,000 BTU/hr (3223)

Voltage 230V

Heat Yes

Finish S

Where distributors publish pricing for the OEM equivalent, VoltAire runs 48% less on average (21-70% by model).

VoltAire Replacement In Production

AT12RNS10

12,000 BTU/hr • 230V

Brand VoltAire

Series AT Telecom Series

Capacity 12,000 BTU/hr +9% cooling

Voltage 230V

Heat Yes

Finish 304 Stainless Steel (NEMA 4X)

What You'll Order

1× AT12RNS10 $6,492

Popular options

Heater Cabinet Controller

Condenser intake filter (15×15 Mesh Filter) +$202

Screens sawdust, filings & insects off the condenser coil — not an enclosure air filter; cabinet air stays sealed.

Need a different voltage or capacity? Configure your AT08 / AT10 / AT12 →

Built to Order • 4-6 weeks

Details

Fit Details

Fits After Modification

Same cooling capacity and voltage as the N431226G151 — generally considered a match, just not bolt-for-bolt. The cabinet cutout differs by a small amount, so a quick trim with a sawzall (or similar tool) gets the VoltAire AT12RNS10 into place. Minor field work, no adapter plate required — routine for any installer. Call (844) 925-5668 if you'd like us to walk through the trim before you order.

Unit dimensions — what the tape measure will tell you

	N431226G151	AT12RNS10	Δ
Height	43.0″	43.99″ H	+1.0″
Width	11.5″	16.39″ W	+4.9″
Depth	14.0″	12.30″ D	-1.7″

Existing nVent unit VoltAire replacement

N4312 to AT12 Opening mismatch · provisional cuts shown

The red areas show where the openings differ; no adapter plate is available for this pairing. The red areas come from the manufacturer's spec sheet and must be confirmed against your actual unit before cutting.

Existing nVent AC outline Existing nVent opening New VoltAire unit outline VoltAire opening Existing cabinet metal that may need removal — verify first

The red hatching shows where the VoltAire openings extend into cabinet metal; confirm the installation plan with VoltAire before cutting.

Step 1 of 4 Start with the existing N4312 cabinet pattern.

The two manufacturer drawings are centered on each other for visual comparison only, because a shared mounting reference between the two units has not been verified. Verify every opening against your actual unit before any cutting or mounting. This comparison uses the standard AC AT12 footprint; the 48 VDC AT12RB has different dimensions. This comparison is a visual guide, not a cutting or drilling template. Openings can vary with voltage and production run — verify against your actual unit before any cutting or mounting, and follow the manufacturer's installation template.

Not sure? Talk to a fit specialist — (844) 925-5668.

N431226G151 Replacement — Common Questions

What replaces the McLean N431226G151?

The VoltAire AT12RNS10 — 12,000 BTU/hr at 230V, NEMA 4X, UL/cUL Listed and built in Orlando, FL. Fits after a minor cutout trim — no adapter needed.

Will the VoltAire AT12RNS10 fit my N431226G151 cutout?

After a minor cutout trim in the field — no adapter plate needed.

How much does a N431226G151 replacement cost?

The VoltAire AT12RNS10 is $6,492. For comparison, the published distributor price for the nVent N431226G151 is $14,077 (RSP Supply, Jul 2026). Volume discounts start at 4 units, and every quote locks pricing for 30 days with no obligation.

How fast can I get a replacement for my N431226G151?

Configured builds ship in 4–6 weeks from Orlando, FL. In-stock variants are sometimes on the shelf — call (844) 925-5668 and we'll find the fastest path for your spec.

Is the VoltAire AT12RNS10 an original McLean part?

No. VoltAire is an independent brand — an engineered replacement, not an OEM part. VoltAire Cooling is not affiliated with McLean, Hoffman, Pentair, or nVent. Units are UL/cUL Listed (UL 484) and manufactured in Orlando, Florida.

Why Switch to VoltAire?

Engineered Replacement

Matched voltage and NEMA 4 protection, with the capacity difference stated in plain numbers above — with a clear fit path for your enclosure: direct, adapter plate, or template-guided modification. Built to replace McLean, Hoffman, Pentair, and nVent.

Built & Tested in the USA

Manufactured in Orlando, FL with a 5-point pressure and leak test. In-stock models ship fast from East Coast (VA) and Rocky Mountain (ID) warehouses; built-to-order configurations ship in 4-6 weeks.

48% Below Published Online Pricing, on Average

No distribution markup. Transparent pricing. Volume discounts at 4+ and 7+ units. Integrator pricing available for panel shops.

Need Heat, Stainless, 230V, or Remote Monitoring?

The AT08 is available with electric heat, stainless steel NEMA 4X, 48VDC, and factory ethernet controllers with Lead-Lag, SNMP, and BACnet.

Configure Your AT08 / AT10 / AT12 →

Related Models

N431226G151 (this page) N431226G050 N431226G051 N431226G060 N431226G100 N431226G150

VoltAire Cooling is an independent party and is not affiliated with or endorsed by McLean, Hoffman, Pentair, or nVent. All competitor brand names and model numbers are the property of their respective owners and are used here for identification and compatibility purposes only.