If you’re upgrading or adding supplemental heating, a 15 kW heat kit can deliver robust warmth for larger spaces. This guide highlights five top options, suitable for different setups—from air handler integrations to central heat-pump add-ons. Each product is described with who it’s best for, potential limitations, and clear reasons to choose or avoid. Use this to compare compatibility with your air handler or HVAC system and to plan a safe, professional installation where required.
| Product | Brand | Voltage | Key Benefit |
|---|---|---|---|
| Supplying Demand HKP-15C | Supplying Demand Store | 240 V | Comprehensive kit with wiring and installation instructions; strong for model-specific air handlers |
| TURBRO 15 kW HVAC Heater Kit | TURBRO Store | 208/240 V | Ready-to-use with circuit breaker; adds heat when central system underperforms |
| Supplying Demand HKSC15XB | Supplying Demand Store | 240 V | Includes breakers and wiring harness; balanced temperature via sequencers |
| Goodman 15 kW HKTS15XB | Goodman Store | 240 V | Direct electric kit; designed to pair with Goodman air handlers |
| Goodman 15 kW HKSC15XB | Goodman Store | 240 V | Durable 15 kW strip heat with circuit protection |
Supplying Demand HKP-15C 15 kW Kit
Best for: licensed technicians or advanced DIY enthusiasts upgrading a compatible air handler with a 240 V, 60 A, 15 kW capacity. This kit includes wiring instructions and installation guidance along with three elements and a 48,623 BTU rating. Choose this if your system model matches and you need a complete installation package. Caution: The part should be installed by qualified technicians per the manufacturer’s guidance.
TURBRO 15 kW HVAC Heater Kit
Best for: homes needing additional warmth when the air conditioner can’t meet heating demands. It’s a ready-to-use accessory that includes a circuit breaker and simple wiring for immediate functionality. Limitation: Requires professional installation to ensure safety and optimal performance at 208/240 V single-phase.
Supplying Demand HKSC15XB Air Handler Kit
Best for: users seeking balanced temperature control with two breakers and a wire harness. Includes plate and sequencing for optimal performance. Caution: Verify compatibility with your model-specific air handler before purchasing; recommended to have a technician install due to wiring complexity.
Goodman 15 kW 240V Electric Heat Kit HKTS15XB
Best for: Goodman-brand air handlers and systems requiring a fully electric kit with 240V single-phase supply. It provides about 51,375 BTUs per hour and is designed for direct electrical integration. Caution: Double-check model compatibility to ensure proper fit and avoid overloading circuits.
Goodman 15 kW HKSC15XB Electric Strip Kit
Best for: large spaces needing efficient, durable heating with a robust 15 kW strip element. It includes a built-in circuit breaker for protection. Caution: The metal body and alloy-steel heating elements require careful handling during installation.
Buying Guide
What to consider when choosing a 15 kW heat kit
Compatibility with your air handler or central heat-pump system is essential. Check voltage (208/240 V), single-phase requirements, and the specific model compatibility listed by each kit. Consider whether you need pre-wired components, breakers, or harnesses for a straightforward installation.
Installation considerations
Several kits require professional installation to ensure electrical safety and correct integration with HVAC controls. Verify that the kit includes all necessary components (circuit breakers, wiring harnesses, mounting plates) and whether additional wiring or adapters are needed for your unit.
Performance and efficiency
15 kW kits deliver substantial heating capacity, typically in the range of 50,000+ BTUs per hour. Assess whether your space truly needs full 15 kW or if a smaller kit could meet demand more efficiently. Consider heat loss of the space and insulation quality.
Durability and wiring protection
Look for kits with solid metal construction, durable heating elements, and built-in circuit protection. A kit with reliable breakers helps prevent overcurrent scenarios and protects both the system and occupants.
Brand and compatibility
Choose brands with documented compatibility with your air handler or heat-pump system. Goodman and Supplying Demand offer model-specific options, while TURBRO provides ready-to-use accessories. Ensure model numbers and system configurations align before purchase.
Safety and warranty considerations
Follow manufacturer installation instructions and local codes. Some products specify installation by qualified technicians. Review warranty coverage to understand what parts or labor are included and under what conditions.
FAQ
- What is a 15 kW heat kit used for?
They add substantial electric resistance heating to larger spaces or to supplement a central system when temperatures drop. - Do I need a professional to install a 15 kW heat kit?
Many kits require professional installation due to high voltage wiring and safety concerns. Check the product instructions for specifics. - Can these kits work with any air handler?
Not universally. Verify compatibility with your air handler model and electrical requirements before purchasing. - What maintenance does a heat kit need?
Routine inspection of wiring, breakers, and mounting hardware is recommended. Ensure connections remain tight and free from corrosion. - Are 15 kW kits energy-efficient?
Electric heat is typically efficient in terms of converting electricity to heat, but overall efficiency depends on usage, space insulation, and how often the kit runs. - How is BTU output related to room size?
Higher BTUs indicate more heating capacity. Match BTU needs to your room size, insulation, and climate for effective heating.