If you’re seeking reliable electric heat kits to augment your air handler, you’re looking for safer, code-friendly options that provide steady warmth when the system can’t meet demand. This guide highlights five top-performing kits, ideal for different setups and budgets. The examples below help buyers choose whether to upgrade with a high-output 15–20 kW kit, a midsize 5–7.5 kW model, or a universal solution compatible with multiple air handler brands. The buyer profiles at the start of each product section will help you pick the best match for your needs.
Product comparison at a glance (selected options):
- Best for high-demand spaces: Supplying Demand HKSC20DB (20 kW) with built-in circuit breaker
- Best for VersaPro or Hyper Heat systems: MRCOOL 7.5 kW for 240V setups
- Best for mid-size supplemental heating: TURBRO 15 kW HVAC Heater Kit
- Best for MrCool Universal systems: MrCool Electric Heat Kit (2–5 ton) with circuit breaker
- Best value option for standard air handlers: Supplying Demand HKR-05 5 kW Kit
Supplying Demand HKSC15XB Air Handler Electric Heat Kit
Best for small to mid-size air handlers needing reliable 15 kW heating at 240V. Features include two breakers, wire harness, and mounting plate, with sequencing for balanced temperature. This kit is suitable for technicians installing into model-specific HVAC units.
Who this is for: Ideal for technicians or homeowners upgrading a compatible air handler that requires a 15 kW, 240V heating boost. Why selected: It offers a compact, integrated breaker setup and a straightforward wiring path that supports balanced heat output. Caution: Requires professional installation to ensure electrical safety and proper sequencing.
MrCool 7.5kW Electric Heat Kit for VersaPro & Hyper Heat
Best for MRCOOL VersaPro and Hyper Heat air handler systems requiring an additional heating boost. Electrical specs indicate 5kW rated kits in some configurations, with a built-in circuit breaker for safety. Fitment depends on the model; verify compatibility with your MRCOOL unit.
Who this is for: Suitable for MRCOOL users seeking a plug-and-play heat kit that adds substantial supplementary heat. Why selected: The kit includes a circuit breaker to protect the system, and it targets MRCOOL-specific air handlers. Caution: May not be universal—confirm model compatibility before purchase.
TURBRO 15 kW HVAC Air Handler Electric Heater Kit
Best for environments that require significant supplemental warmth. This 15 kW, 240V single-phase kit is designed for APEX 30,000 and 36,000 BTU ducted systems and includes a circuit breaker for ready-to-use installation. Professional installation recommended for safety and optimal performance.
Who this is for: Ideal for colder regions or spaces demanding substantial heating beyond the base system. Why selected: High heating capacity and UL-certified attributes support robust winter performance. Caution: Installation should be performed by a qualified technician to avoid electrical risks.
MrCool Electric Heat Kit for MrCool Universal System
Best for MrCool Universal air handler systems needing supplemental heating for 2–5 ton units. Provides electric heating power with built-in circuit breaker for safety. This kit is designed to enhance performance during cold snaps without replacing the base air handler.
Who this is for: Suitable for MrCool Universal owners seeking an integrated, safer heat boost. Why selected: Compatibility with universal MrCool units and added circuit protection. Caution: Verify that your unit falls within the 2–5 ton range for optimal operation.
Supplying Demand HKR-05 5 kW Electric Heater Kit
Best for entry-level supplemental heating needs with a 5 kW output at 240V. Includes alloy open-coil heater and limit controls, with wiring instructions and installation guidance. The kit is suitable for standard model-specific air handlers and should be installed by qualified technicians.
Who this is for: Ideal for budget-conscious installations or smaller spaces that still require reliable heat boost. Why selected: Compact 5 kW option paired with clear installation instructions and a built-in safety consideration. Caution: Ensure your air handler supports a 5 kW add-on and comply with local codes during installation.
Buying Guide
What to consider when choosing an air handler electric heat kit:
- Heating capacity vs. space size: Higher kW kits (10–20 kW) suit larger spaces; smaller rooms may only need 5 kW.
- Electrical requirements: Verify circuit breaker ratings, voltage (240V), and single- vs. multi-phase to prevent overloads.
- Compatibility: Ensure the kit matches your air handler model or brand; universal options exist but may require adapters.
- Safety features: Built-in breakers, overcurrent protection, and proper wiring harnesses reduce electrical risk.
- Installation complexity: Some kits are plug-and-play; others require professional installation for wiring and refrigerant-related concerns.
- Durability and materials: Rust-resistant elements and robust heating elements extend life in harsh environments.
Frequently Asked Questions
- What size electric heat kit do I need for my air handler? — It depends on your space heat load and the air handler’s capacity. Larger spaces typically need 10–20 kW, while smaller rooms can be managed with 5 kW kits.
- Do these kits require professional installation? — Many kits involve electrical wiring and safety considerations; professional installation is recommended or required by local codes.
- Will a circuit breaker be included with the kit? — Some models include a built-in breaker; others require a separate breaker or panel upgrade.
- Are universal kits compatible with all air handlers? — Universal designs exist, but always verify tonnage range and compatibility with your specific unit.
- What maintenance do these kits require? — Periodic inspection of wiring, breakers, and heating elements is advised to ensure safe operation.
- Is a higher kW kit better for every space? — Not necessarily; higher capacity offers more warmth, but excess capacity can be wasteful or unsafe if not properly sized for the space.