Best PVC Conduit Heaters and Benders

Choosing the right PVC conduit heater or bending solution ensures accurate, safe bends for electrical conduit runs. Below is a quick comparison of five popular options that suit residential and commercial conduit work. Each product section includes features and practical notes to help match tool capabilities to job requirements.

Product	Brand	Conduit Size Range
TEMCo TH4001 PVC Conduit Heat Blanket Bender 1/2″ – 1 1/2″	TEMCo Industrial	1/2″ – 1½”
TEMCo TH4002 PVC Conduit Heat Blanket Bender 2-3″	TEMCo Industrial	2″ – 3″
Hoadhen PBH20-4 Electric PVC Conduit Heater 1/2″–4″	Hoadhen	1/2″ – 4″
CURRENT TOOLS PVC Conduit Heater – ½” to 2” (450)	Current Tools	1/2″ – 2″
Greenlee 851 Electric PVC Heater/Bender 1/2″–4″	Greenlee	1/2″ – 4″

TEMCo TH4001 PVC Conduit Heat Blanket Bender 1/2″ – 1 1/2″

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The TEMCo TH4001 is a thermostatically controlled heating blanket sized for 1/2″ to 1-1/2″ conduit. Its design emphasizes tighter wrap and improved contact between blanket and conduit for smoother bends.

• Patented longer blanket design for wider bends and better wire pulling clearance.
• External thermostat placement allows the blanket to wrap tighter to the conduit, assisting uniform heat transfer.
• Heat blanket approach permits any angle bends rather than preset radii, providing flexibility for offsets and saddles.

Best used where portability and targeted heating are needed for small-to-medium conduit sizes. The blanket format is suitable when working on longer runs or when you prefer wrap-and-bend methods instead of rigid chamber heaters.

TEMCo TH4002 PVC Conduit Heat Blanket Bender 2-3″

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The TEMCo TH4002 extends TEMCo’s blanket technology to larger conduit sizes, targeting 2″ to 3″ PVC. It retains the same thermostatic placement and tighter wrap benefits as smaller models.

• Tighter wrap for faster, smoother bending compared to looser blanket designs.
• External thermostat encourages consistent heating along the wrap interface.
• Allows custom angle bends and does not limit the user to predefined radii.

This model suits larger conduit runs where portability and the ability to form custom bends are priorities. The blanket style is well matched to fieldwork where pipe lengths and bend angles vary frequently.

Hoadhen 1/2″ to 4″ Electric PVC Conduit Heater PBH20-4

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The Hoadhen PBH20-4 is a chamber-style electric PVC heater rated for up to 4″ conduit sections. It emphasizes rapid heating, integrated temperature monitoring, and safety shutoff controls.

• Ease of use: Full-length door and a preheat procedure for quick loading and unloading.
• Temperature monitoring: Built-in detector provides real-time internal temperature readings for controlled heating.
• Safety protection: Automatic shutoff if internal temperature exceeds set thresholds; indicator light for operational status.
• Operates at household voltage with high wattage output for faster warming of larger sections.

Chamber heaters like this provide enclosed, uniform heating for repeatable bends and are useful on job sites where consistent radii and repeat bends are required. The full-length door simplifies handling long sections.

CURRENT TOOLS PVC Conduit Heater – ½” To 2” (450)

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The CURRENT TOOLS 450 is a compact conduit heater designed for 1/2″ to 2″ PVC. It focuses on even heat distribution and portability for jobsite use.

• Reflective interior produces more consistent heating across the pipe surface.
• Even heating helps reduce hotspots and improves predictability when forming bends.
• Designed for quick, precise heating tasks with a carrying handle for mobility.

This unit is suitable for electricians who need a balance between portability and even heating for small-to-medium conduit sizes. Reflective interiors reduce discrepancies across pipe sections, improving bend quality.

Greenlee 851 Electric PVC Heater/Bender For 1/2-Inch – 4-Inch

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The Greenlee 851 is a heavy-duty chamber heater built for 1/2″ to 4″ PVC pipe sections. Its metal-insulated walls and reflective interior prioritize efficient and even heat distribution.

• Preheat procedure: Ten-minute preheat recommended for consistent results.
• Insulated metal construction and reflective interior provide efficient heating and heat retention.
• Full-length door simplifies loading and rotation for larger pipe sections.

Greenlee’s reputation for robust tools is reflected in this unit’s construction. Chamber-style heating and reflective interiors provide consistent temperatures needed for repeatable bends on larger conduit diameters.

Buying Guide: How To Choose A PVC Conduit Heater

Selecting the right PVC conduit heater depends on job type, conduit sizes, portability needs, and control requirements. Below are the main factors to weigh when comparing heaters and blankets.

Conduit Size Range And Compatibility

Identify the diameter range you commonly work with. Blankets excel for irregular or longer lengths in specified size bands (e.g., 1/2″–1½”, 2″–3″). Chamber heaters handle fixed-length sections and often support wider ranges up to 4″. Choose tools rated for your most frequent sizes.

Heating Method: Blanket Vs Chamber

• Blankets: Wrap-around heating provides flexibility for custom angles and longer runs; useful for on-site adjustments and offsets.
• Chambers: Enclosed heat for repeatable, consistent radii and faster cycle times for short sections. Better for production-style bending.

Temperature Control And Monitoring

Accurate temperature control prevents overheating and deformation. Look for thermostats or built-in temperature detectors that allow real-time monitoring. Automatic shutoff features add safety for unattended preheats.

Heat Distribution And Construction

Reflective interiors or tightly wrapping blankets improve even heat distribution. Metal-insulated walls in chambers retain heat and shorten preheat times. Consider build quality for durability on job sites.

Portability And Jobsite Practicality

For fieldwork, consider units with carrying handles or lightweight blankets. Chamber heaters can be heavier but offer a controlled environment for consistent bends. Balance portability with the need for capacity and speed.

Safety Features And Electrical Requirements

• Verify voltage and amperage requirements match jobsite power availability.
• Automatic shutoff and indicator lights reduce risk of overheating.
• Insulation and thermostatic control minimize surface temperatures and exposure risks.

Use Case Perspectives

Compare perspectives to match tool choice to workflow:

• Electrician Doing Occasional Bends: A blanket or small chamber with clear thermostat control covers sporadic site needs and variable pipe lengths.
• Contractor Needing Repeatable Radii: A chamber heater with reflective interior and full-length door supports consistent production bending.
• Field Technician With Long Runs: A flexible blanket that wraps tight and heats longer sections allows varied angle work and offsets without specialized molds.

Durability And Brand Support

Consider brands known for tool longevity and parts availability. Metal construction and quality insulation extend service life. Check that thermostats, straps, and closures are replaceable or serviceable.

Practical Tips For Best Results

• Follow manufacturer preheat times and recommended rotations for even softening.
• Use temperature monitoring rather than time-only heating to avoid over-softening.
• Allow cooled bends to stabilize before mounting or running cable to maintain shape.
• Test a scrap section to dial in time and temperature for the specific PVC formulation you’re using.