If you’re upgrading or repairing an air handler, an electric heat kit can provide reliable auxiliary heating. This guide compares five popular kits, highlighting who each product is best for, key features, and practical considerations. It’s designed for homeowners, contractors, and DIYers seeking a clear, manufacturer-backed path to better climate control. The table below summarizes the five kits at a glance to help you decide quickly.
| Product | Key Strength | Best For | Limitations |
|---|---|---|---|
| Supplying Demand HKR-05 | 5 kW alloy open coil heater | Requires 240V power and proper wiring | |
| GOODMAN HKP-20C | 20 kW kit, designed for Goodman units | Only fits specific models | |
| Supplying Demand HKR-10C | 10 kW with circuit breaker | Requires professional installation for wiring | |
| Supplying Demand HKSC15XB | 15 kW with breakers, sequencers | Integrated breakers add complexity | |
| Goodman HKTSD10X1 | 10 kW with nickel chromium element | Brand-specific installation considerations |
When selecting an electric heat kit, consider compatibility with your air handler, required voltage, heating capacity, and installation complexity. The following sections break down each product’s strengths, who it’s best for, and practical cautions to avoid common pitfalls.
Supplying Demand HKR-05 5 kW Electric Heater Kit
The HKR-05 uses an alloy open coil heater with essential limit controls. It includes wiring instructions, installation notes, and warranty information, with a 240V, 5 kW, 39.6 Amp, single-phase design. Best for budget-conscious repairs on model-specific air handlers. Ideal for homeowners who need a straightforward 5 kW solution and have the capacity for proper wiring and safety disconnection during service. A potential limitation is the need for correct power isolation during maintenance.
GOODMAN HKP-20C Electric Heat Kit for Air Handler 20Kw
The HKP-20C is a high-capacity kit designed for Goodman air handlers. Its 20 kW output supports larger heating loads, making it suitable for colder climates or larger spaces. It’s best for Goodman-brand systems where model compatibility is confirmed. The main caveat is model specificity; confirm that your unit matches HKP-20C requirements before purchase to avoid fit issues.
Supplying Demand HKR-10C 10 Kilowatt Kit With Circuit Breaker
The HKR-10C combines 10 kW heating with an integrated circuit breaker, plus compatible wiring and control elements. It’s well-suited for medium-sized spaces or mid-range heating needs on model-specific air handlers. Choose this if you want built-in protection and a moderate power step up from 5 kW kits. A caution is ensuring correct breaker compatibility and adherence to electrical codes during installation.
Supplying Demand HKSC15XB Air Handler Electric Heat Kit 15KW
The HKSC15XB package includes (2) breakers, a wiring harness, and a plate, with control by sequencers for balanced temperature. It delivers 15 kW at 240V, 60 Hz, and is designed for model-specific air handlers. Best for installations prioritizing even heat distribution. A potential limitation is the need for technical expertise to wire sequencers and breakers correctly; improper setup can affect performance.
Goodman 10kW Heat Kit With Circuit Breaker For Select Goodman Units
This Goodman kit features a nickel chromium heating element for durability and corrosion resistance, plus a plug-in wiring harness for easier air handler installation. It’s best for Goodman units requiring a robust, easy-to-install 10 kW solution. The main caution is ensuring the unit’s compatibility with a 10 kW kit and maintaining proper sequencing for temperature control to avoid hot spots.
Buying Guide
What size heat kit do I need?
Match the kit’s kW rating to your space size and climate needs. Larger rooms or colder climates typically require higher wattage kits, while smaller spaces can suffice with 5–10 kW models. Check your air handler’s electrical capacity and the system’s designed operating range.
Is the kit compatible with my air handler brand?
Many kits are model-specific. Verify the kit number against your air handler model to ensure fit, wiring harness compatibility, and correct breaker requirements. Brand-specific kits (like Goodman) are often easiest to install on corresponding units.
What additional components are needed?
Common needs include a compatible circuit breaker, wiring harness, and control sequencers. Some kits provide these components; others require separate purchase. Budget for wiring, disconnects, and professional installation if required by local codes.
What installation considerations matter?
Electrical safety is paramount. Disconnect power before servicing. Ensure proper clearances around the heater elements and correct placement within the air handler. A qualified technician should verify wiring and controls, especially when breakers and sequence controls are involved.
How do I balance heat distribution?
Look for kits with sequencing controls and multiple breakers, which help distribute heat evenly. Balanced heating reduces hot spots and improves response time, especially in larger return-air configurations.
Durability and maintenance
Check element material (nickel chromium elements are common for durability). Corrosion resistance matters in humid environments. Periodic inspection of wiring, breakers, and protective covers helps prevent failures and improves long-term performance.
FAQ
- Q: Can I install an electric heat kit myself?
- A: Installation complexity varies by model and local codes. If you are not experienced with high-voltage electrical work, hire a licensed technician.
- Q: Do all kits fit any air handler?
- A: No. Many kits are model-specific. Verify compatibility with your air handler’s model number and wiring harness requirements.
- Q: What safety features should I expect?
- A: Look for limit controls, circuit breakers, and protective housings. Proper disconnection procedures during servicing are essential.
- Q: Is higher wattage always better?
- A: Not necessarily. Higher wattage suits larger spaces or colder climates, but must be matched to the system and electrical capacity to avoid overloading.