What's in the box
- 1 × MRCOOL® Signature TXV Kit - H4TXV02
- Specification
- Specification Details Product Type TXV Valve Kit Model H4TXV02 Series Signature TXV Compatible System Size 3 to 3.5 Ton Country of Origin Mexico Color Copper Color Family Copper / Bronze Metallic Registered Warranty N/A Batteries Required No Contains Electronics No Contains Chemicals No Contains Aerosol No Contains Compressed Gas No Proposition 65 Warning Yes Restricted States GU / PR / VI Gross Dimensions 5.8" W × 3.7" H × 9.7" D Gross Weight 2 lb Freight Class 70
Professional installation is recommended.
This TXV kit should be installed only by a qualified HVAC professional according to system requirements, installation documentation, refrigerant specifications, and local codes.
Incorrect TXV selection or installation may affect system performance.
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Free shipping available.
Orders ship from U.S. warehouse locations. Delivery times may vary by product availability, destination, and freight carrier scheduling.Returns must follow Cool Heat Direct’s return policy and the product must meet return eligibility requirements.
MODEL: H4TXV02
Precision Refrigerant Control for Compatible MRCOOL® Systems.
Need the correct TXV kit for a compatible 3 to 3.5 ton MRCOOL® HVAC setup?
The MRCOOL® Signature TXV Kit is designed to help regulate refrigerant flow in compatible systems, supporting proper system performance, efficiency, and reliability when matched with the correct equipment.
This copper TXV accessory is intended for specific 3 to 3.5 ton applications and should only be selected when confirmed as compatible with the system being installed or serviced.
Because TXV compatibility is model-specific, this product is best suited for professional HVAC installation, replacement, or system configuration where the correct valve kit is required.
Correct fit. Proper flow. Built for compatible MRCOOL® systems.
Why You’ll Love It
✅ Designed for compatible 3 to 3.5 ton systems
✅ Genuine MRCOOL® accessory
✅ Helps regulate refrigerant flow
✅ Copper / bronze metallic finish
✅ No batteries required
✅ Contains no electronics
✅ Contains no chemicals, aerosol, or compressed gas
✅ Suitable for professional HVAC installation
Best For
Compatible MRCOOL® Signature Systems • 3 Ton Systems • 3.5 Ton Systems • TXV Replacement • HVAC System Configuration • Professional Installations
Compatibility
Designed for compatible MRCOOL® 3 to 3.5 ton systems requiring this specific TXV kit.
Always confirm compatibility with your exact system model, coil, air handler, condenser, refrigerant type, and installation requirements before purchase.
Questions, answered
Everything homeowners ask before buying a MRCOOL® system.
Installation
Do I need an HVAC technician to install this?
No. MRCOOL® DIY systems are designed for homeowner installation. The pre-charged Quick Connect® line set means there's no refrigerant handling, no vacuum pump, and no special tools or license required.
How long does installation take?
Most single-zone systems go in within a few hours: mount the indoor air handler, set the outdoor condenser, connect the pre-charged line set, and power it on.
Do I need an electrician?
The system needs a dedicated circuit. Most homeowners have a licensed electrician add the breaker and disconnect — everything else you can do yourself.
Sizing & compatibility
What BTU size do I need?
As a rule of thumb: up to 400 sq ft → 9–12K BTU, 400–600 sq ft → 12–18K, 600–1,000 sq ft → 18–24K. Use the room-size guide above and factor in insulation, ceiling height and sun exposure.
Will it heat in winter?
Yes — these are heat pumps, so they heat and cool. Many MRCOOL® systems keep heating in sub-freezing temperatures; check each model's spec sheet for its low-temperature heating range.
115V or 230V — which do I need?
9K–12K units are usually 115V (standard outlet circuit); 18K and larger are typically 230V. The voltage is shown in the product options and specifications.
Warranty & support
What warranty is included?
MRCOOL® systems carry manufacturer warranty coverage — typically 5–10 years on major components when you register your system after installation.
How do I get help choosing or installing?
Email support@coolheatdirect.com — our U.S. team replies within one business day with sizing, voltage and compatibility help.
Shipping & returns
How fast does it ship?
Most products ship in 3–5 business days with free curbside delivery in the continental U.S. The freight carrier calls to schedule your delivery.
Can I return it?
Returns are accepted within 30 days on new, unopened items in original packaging. A restocking fee may apply to HVAC equipment — we always confirm before issuing a return authorization.
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