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Crankcase Heater 70W 240V 18 Inch Wrap-Around Universal Compressor
National HVAC Parts

Crankcase Heater 70W 240V 18 Inch Wrap-Around Universal Compressor

SKU: NHVAC-HARD-34NXO6 Brand: National HVAC Parts
$24.00 $32.40

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

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Crankcase Heater 70W 240V 18 Inch Wrap-Around Universal Compressor

A 70W compressor crankcase heater that prevents liquid refrigerant from migrating into the compressor oil during off cycles. Critical for heat pump systems and AC units in cold climates where refrigerant migration can cause compressor damage on startup.

Key Features

  • Wrap-around design fits any compressor shell diameter
  • 70W output for larger compressors and cold climates
  • 240V operation — connects to line voltage at the disconnect
  • Maintains oil temperature above refrigerant condensation point

Specifications

  • Wattage: 70W
  • Voltage: 240V
  • Length: 18 inches
  • Style: Wrap-around belt

What's Included

  • Crankcase heater
  • Mounting hardware

Ships same-day from our Houston warehouse on orders placed before 3PM CST.

Frequently Asked Questions

When do I need a crankcase heater?

Crankcase heaters are recommended for heat pumps in cold climates, AC units that sit idle for extended periods, and any system where liquid refrigerant migration has caused compressor failures.

Does the heater run all the time?

It runs during the compressor off cycle to keep the oil warm. It automatically shuts off when the compressor runs (the compressor generates its own heat). Many contractors wire it to run continuously during the heating season.

How do I know what wattage to choose?

40W is standard for residential compressors up to 3 tons. 70W is recommended for larger compressors (3.5-5 ton) or extremely cold climates.

Will this increase my electric bill?

A 70W heater running 12 hours per day costs roughly $2-3 per month. This is minimal compared to the cost of a compressor replacement due to liquid slugging.

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 $75
  • 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 support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Hard Start Kits & Compressor Accessories fit my National HVAC Parts Crankcase Heater 70W 240V 18 Inch Wrap-Around Universal Compressor?
Yes. This is the factory-specified OEM hard start kits & compressor accessories for the National HVAC Parts Crankcase Heater 70W 240V 18 Inch Wrap-Around Universal Compressor. 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 hard start kits & compressor accessories on my National HVAC Parts Crankcase Heater 70W 240V 18 Inch Wrap-Around Universal Compressor?
Refer to your equipment service manual for model-specific steps. General approach: turn off power, photograph connections, remove old part, install new part, restore power and test. For gas components, hire a licensed technician. Email info@nationalhvacparts.com for guidance.
What symptoms mean I need a new hard start kits & compressor accessories?
Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.
Is this hard start kits & compressor accessories compatible with Bryant or Payne too?
Many National HVAC Parts 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 National HVAC Parts hard start kits & compressor accessories?
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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