Heating Coils for Heat Pumps
When temperatures drop and a heat pump can't keep up on its own, electric resistance heating coils carry the load. We manufacture custom replacement coils for heat pump auxiliary, backup, and supplemental heat — precision-wound to match your system's original specifications.
The Coils Behind Your Backup Heat
A heat pump moves heat rather than burning fuel to create it — efficient, but in cold weather it often needs support. That support comes from electric resistance heating coils built into the air handler or fan coil unit. When the thermostat calls for auxiliary or emergency heat, current runs through these resistance-wire coils and converts directly into warmth.
After years of heat cycles, those elements eventually sag, short, or burn out — and the system loses its backup heat just when it's needed most. We wind exact replacement coils so your equipment regains its full rated heating capacity.
Why Source Your Coils From Us
OEM-Matched Resistance
Wound to your original wattage and resistance so the system heats exactly as designed.
±2% Precision Tolerance
Tight resistance tolerance for consistent, balanced heat output across every coil.
48-Hour Turnaround
Custom coils wound and shipped fast, so heating downtime stays short.
Custom Engineering
Any voltage, wire gauge, length, or termination — built to your exact requirement.
Heat Pump Elements We Wind
From a single backup strip to a full multi-stage heat kit, we build replacement resistance coils for every part of a heat pump's electric heat circuit.
Auxiliary & Backup Heat Strips
Single- and multi-stage resistance strips (5kW, 10kW, 15kW, 20kW and up) that engage when the heat pump alone can’t hold setpoint.
Air Handler & Fan Coil Elements
Replacement coils for the electric heat kits inside air handlers and fan coil units, wound to seat correctly in the original frame.
Emergency Heat Elements
The resistance coils your system falls back on in "EM Heat" mode when the compressor is locked out in deep cold.
Packaged & Dual-Fuel Units
Supplemental heat coils for packaged heat pumps and dual-fuel setups, matched to the rating on the unit data plate.
We custom-wind to fit air handlers and fan coils from every major manufacturer — Goodman, Trane, Carrier, Lennox, Rheem, Ruud, York, and more. No matched OEM part number is needed; we build from your element's measurements and ratings.
Signs Your Heat Strip Has Failed
A heat pump that cools fine in summer but blows cool air on auxiliary heat in winter usually has a failed resistance element — not a failed compressor. Watch for:
- Cold or lukewarm air when "Auxiliary" or "Emergency Heat" is showing on the thermostat
- A breaker for the heat kit that trips repeatedly or won’t reset
- Higher-than-normal electric bills as a partial heat strip works harder to compensate
- A visible break, sag, or burn mark on a coil in the heat kit
- No continuity across an element when checked with a multimeter
Dig Deeper
Want to confirm the diagnosis before you order? These guides walk through testing and measuring a resistance element step by step.
What We Need to Build Yours
Every coil is made to order. Send us as much of the following as you can — and if you're unsure, our team can help work it out from your equipment details.
- System voltage (commonly 208V or 240V)
- Wattage or amperage rating of the element
- Resistance wire gauge (thickness)
- Coil outer diameter and stretched length
- Termination / tail style
- Equipment make and model, if available
Not sure of your specs?
Send us the make and model of your heat pump or air handler, or a photo of the existing element and its data plate. We'll identify the right coil for you.
Contact our teamHeat Pump Coil FAQ
What is an auxiliary heat strip on a heat pump?
An auxiliary (or backup) heat strip is a set of electric resistance coils built into the air handler or fan coil unit. When outdoor temperatures fall and the heat pump can no longer pull enough heat from the air, the thermostat energizes these coils to supplement the system and hold your setpoint.
How do I know if my heat strip is bad or if it’s the heat pump?
If the system still cools normally in summer but blows cool air on "auxiliary" or "emergency" heat in winter, the resistance heat strip is the likely culprit. A break in the coil, a tripped heat-kit breaker, or no continuity across the element when measured with a multimeter all point to a failed element rather than the heat pump or compressor.
Can you wind a replacement coil if I only have the old element?
Yes. Send us the failed element along with the unit’s make, model, and data-plate ratings (voltage and kW or amperage). We reverse-engineer the wire gauge, coil diameter, stretched length, and termination so the replacement drops into the original frame and restores the rated heat output.
Do replacement heat strips need to match the original wattage exactly?
They should. Matching the original voltage and wattage keeps the amp draw within what the unit’s wiring, sequencers, and breaker were designed for. We wind to your OEM resistance within a ±2% tolerance so the system heats as designed and stays within its electrical limits.
How fast can you ship a replacement heat pump coil?
Most custom coils are wound and shipped within 48 hours of a confirmed specification, with delivery across North America. The faster you can confirm voltage, wattage, and coil dimensions, the sooner we can have the element on its way.
More questions? See our full FAQ or get in touch.
Restore Your Heat Pump's Full Heating Capacity
Custom-wound replacement coils, shipped across North America in 48 hours.
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