MRCOOL Universal Series Heat Kits are auxiliary electric heating components designed for compatible MRCOOL Universal air handlers and packaged heat pump systems. They add electric heat when the heat pump requires supplemental heating during cold-weather operation, supporting auxiliary or emergency heat applications.
For HVAC contractors, field technicians, DIYers, and system owners, selecting the correct heat kit depends on the equipment configuration, model compatibility, and required heating capacity. The MRCOOL Universal Series offers different heat kit options for specific Universal systems, allowing the appropriate component to be identified based on the equipment being serviced or installed.
Flexible Heating Options for MRCOOL Universal Systems
MRCOOL Universal heat kits come in different capacities for split-system air handlers and packaged heat pumps. DIYers can select the right kit by checking the system type, model, and heating capacity:
Types of Ducted Air Handler Heat Kits — UHK Series
5 kW Heat Kits (UHK05): Engineered for 1.5-Ton through 3-Ton R-454B Universal air handlers (compatible with UAH18024-O, UAH18030-O, and UAH18036-O) operating on 208/230 V single-phase power.
10 kW Heat Kits (UHK10): Mid-capacity heating units designed for 2-Ton through 5-Ton systems (UAH18024-O through UAH18060-O), featuring integrated circuit breaker protection.
15 kW Heat Kits (UHK15): Heavy-duty heating assemblies built for 3.5-Ton through 5-Ton air handlers (UAH18024-O through UAH18060-O) to actively eliminate cold drafts during defrost cycles.
20 kW Heat Kits (UHK20): High-output auxiliary kits equipped with multi-stage control and built-in circuit breakers for high-capacity 4-Ton to 5-Ton air handlers (UAH18036-O, UAH18048-O, and UAH18060-O).
Packaged System Options: The MDPHK06D, MDPHK09D, and MDPHK12D heat kits provide supplemental electric heat for compatible Universal packaged systems.
Compatibility Checks when Selecting MRCOOL Heat Kits
System performance drops during winter snaps typically point directly to auxiliary heat failures. PartsHnC provides the components and technical specs needed to resolve heat loss issues quickly:
1. Identify the Issue: Continuous operation with insufficient warm air may indicate that the auxiliary heating circuit is not engaging, limiting the system’s ability to meet indoor heating demands.
2. Assess the Heating Element: Technicians can use a digital multimeter to test the heating element after initiating an appropriate emergency heat call. A functional element typically reads 10–20 Ω, while an infinite reading indicates an open element that may require replacement.
3. Choose the Right Heat Kit by System Compatibility: Match the replacement kit to the equipment type, model, and required heating capacity:
Split air handler: Select the appropriate kit from the UHK Series.
Packaged heat pump: Select the appropriate kit from the MDPHK Series.
Exact model: Verify that your equipment model is listed as compatible with the selected SKU.
Heating capacity: Choose the appropriate kW output based on the system's heating requirements.
With the right heat kit and verified compatibility, customers can address auxiliary heating issues and maintain comfort in cold weather.
Operating and Safety Features Supporting System Performance
MRCOOL Universal Heat Kits deliver supplemental electric heat during severe freeze events and defrost cycles, eliminating cold-air drafts and stabilizing indoor setpoint temperatures:
Integrated Circuit Breakers: Operating on 208/230 V, single-phase, 60 Hz power feeds, models such as the UHK05, UHK10, and UHK20 feature factory-installed circuit breakers for localized electrical protection.
Defrost Cycle Draft Elimination: Higher-capacity units, including the 15 kW (UHK15) kit, provide rapid thermal compensation during automatic defrost cycles to maintain consistent indoor discharge air temperatures.
Compact Cabinet Fit: Space-saving form factor (22 × 10.63 × 8.13 inches) with low operational net weight (4.5 lbs for UHK05; 5.3 lbs for UHK10) ensures clean, unrestricted slide-in installation into factory air handler cabinets.
Why Choose MRCOOL Universal Series Heat Kits From PartsHnC?
PartsHnC simplifies HVAC procurement by pairing an extensive inventory of genuine MRCOOL Universal Series Heat Kits with a seamless, contractor-ready ordering experience. Engineered to serve licensed HVAC professionals on active job sites, skilled DIYers, and proactive homeowners, PartsHnC delivers the speed, technical transparency, and support required for critical heat recovery projects by:
Same-Day Shipping: Guaranteed rapid dispatch on in-stock inventory to resolve emergency heating failures fast.
Streamlined Online Ordering: Easy catalog navigation and secure checkout from home, office, or the job site.
Comprehensive Compatibility Specs: Detailed technical documentation and model-matching charts to verify system compatibility before purchasing.
All-in-One Component Catalog: Centralized access to the complete range of MRCOOL Universal heat kits and OEM replacement parts.
24/7 Support & Secure Checkout: Backed by 100% safe payment processing and round-the-clock technical email assistance.
Flexible 30-Day Returns: Straightforward return policy for a hassle-free purchasing experience.
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Contact Details
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Website: www.partshnc.com
Watch & Learn: Expert HVAC Visual Tutorials
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