Heat Strips for Air Handlers

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🔥 Auxiliary Heating • Reliable Backup

Electric Heat Kits for Ducted Air Handlers

Never get caught in a deep freeze without backup. Heat strips for air handlers are essential components for central ducted heat pump systems operating in severe winter climates. When outdoor temperatures drop past the operational limit of your compressor, an electric heat kit instantly provides vital emergency heat for heat pump operations. From a supplemental 5kw heat strip to a massive 20kW air handler heater coil, explore our OEM-certified heating modules to guarantee your family's comfort.

  • ❄️ Defrost Cycle Support
  • 🔌 5kW to 20kW Options
  • 🛡️ OEM Compatibility
  • 🔥 Instant Warm Air

The Role of an Auxiliary Heat Strip

While modern inverter heat pumps are incredibly efficient, extracting heat from sub-zero air becomes increasingly difficult. An auxiliary heat strip acts as the ultimate safety net for your central ducted system.

  • Defrost Cycle Comfort
    When a heat pump enters "defrost mode" to melt ice off the outdoor condenser, it temporarily blows cold air inside. The air handler heater coil activates simultaneously to ensure you only feel warm air through your vents.
  • Emergency Heat (EM Heat)
    If your outdoor compressor fails during a blizzard, the thermostat will activate the HVAC electric heater strips as a standalone furnace, keeping your pipes from freezing until repairs are made.
  • Seamless Integration
    These kits slide directly into the pre-designed slots inside your central air handler cabinet, requiring no additional ductwork or external housing.

kW to BTU Sizing Guide

Heat Strip Size (kW) Approx. Heating Output Matched Air Handler Tonnage
5kW Heat Strip ~17,060 BTU/hr 1.5 to 2.0 Ton Systems
8kW Heat Strip ~27,296 BTU/hr 2.0 to 2.5 Ton Systems
10kW Heat Kit ~34,120 BTU/hr 2.5 to 3.0 Ton Systems
15kW Heat Kit ~51,180 BTU/hr 3.5 to 4.0 Ton Systems
20kW Heat Kit ~68,240 BTU/hr 4.0 to 5.0 Ton Systems
Note: 1 kW of electricity equals precisely 3,412 BTUs. Sizing depends heavily on your region's lowest winter temperature.

🎯 Building a Complete Central System?

Don't forget to bundle! Browse our Central Ducted Systems section to find perfectly matched outdoor heat pumps, indoor air handlers, and compatible heat strips.

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FAQ: Air Handler Heat Strips

? What is a heat strip for an air handler?
A heat strip (or electric heat kit) is a series of electric resistance heating elements installed inside a central ducted air handler. It acts as auxiliary (supplemental) or emergency heat when a heat pump cannot extract enough warmth from extremely cold outdoor air.
❄️ When do I need an electric heat kit?
You need an electric heat kit if you live in a climate where winter temperatures frequently drop below freezing. It guarantees your home stays warm as emergency heat for heat pump failures or bridges the gap during standard defrost cycles.
How many kW heat strip do I need?
As a general rule, 1kW of electric heat produces about 3,412 BTUs. A 5kw heat strip is usually sufficient for a 1.5 to 2-ton system in mild climates, while a 10kw heat kit to 20kW kit is required for 3 to 5-ton systems in harsh winter environments.
🔌 Can I install an air handler heater coil myself?
No. Installing an air handler heater coil involves routing high-voltage electricity (often 230V with high amperage) and modifying the internal wiring harness of your HVAC system. It is extremely dangerous and must be performed by a licensed HVAC technician or electrician.

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