What are the specs for this Transformer?

The correct replacement for Carrier model Model 58MVP040 is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Carrier equipment which lists the model number Model 58MVP040.

Is this transformer compatible with Bryant or Payne systems too?

Many Carrier parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

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Carrier

Carrier Transformer HT01BB118 for Model 58MVP040

Name: Carrier Transformer HT01BB118 for Model 58MVP040
Brand: Carrier
SKU: CARRIE-58MVP040-HT01BB118
Price: 69.95 USD
Availability: InStock

SKU: CARRIE-58MVP040-HT01BB118 Brand: Carrier

$69.95

Market price $82.29

SAVE $12.34 (15%) vs market

Genuine Carrier OEM part · Guaranteed to fit your unit

✓ Guaranteed to fit 58MVP040 — or your money back. Terms

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

This is the exact Carrier part HT01BB118 installed at the factory in the 58MVP040 — not a will-fit substitute. Fitment guaranteed — free returns if it doesn't fit.

Specifications

Va	60
Secondary	24V
OEM Part Number	HT01BB118
Brand	Carrier
Condition	New — genuine OEM

Symptoms of a failing transformer

Watch for: Error codes tracing to this component, the system short-cycles or locks out, performance that degrades under load. Catching it early protects the components around it.

Replacement guide

Kill power before servicing and photograph the wiring and mounting. Swap the part, torque fasteners evenly, and route wires away from hot or moving surfaces. Run a complete cycle and verify normal operation before closing the panel.

FAQ

Is this the exact OEM part for my 58MVP040? Yes — verified factory fitment for that model.

Not sure of your model? Chat with Mike with the number from your unit's nameplate and we'll confirm before you order.

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $99
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

Carrier Transformer HT01BB118 fo...

$69.95

Frequently Asked Questions

Does this Transformer fit my Carrier Model 58MVP040?

Yes. This is the factory-specified OEM transformer for the Carrier Model 58MVP040. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the transformer on my Carrier Model 58MVP040?

Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Photo wiring connections. Step 3: Disconnect wires from old transformer. Step 4: Remove mounting hardware. Step 5: Install new transformer, reconnect wires matching voltage ratings. Step 6: Verify 24V output with multimeter.

My thermostat has no power. What failed?

Thermostat with no display = failed 24V transformer (or blown control board fuse). Check the 3A/5A fuse on the control board first ($1–$5 fix). If fuse is good but no 24V output from transformer, replace transformer.

Is this transformer compatible with Bryant or Payne too?

Many Carrier parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my Carrier transformer?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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