Free shipping is available on eligible orders delivered within the Lower 48 states, as shown at checkout. Alaska and Hawaii shipping is available on select products and may require a custom freight quote.

Orders are typically processed within 3–5 business days. Delivery within the Lower 48 usually takes an additional 5–12 business days, depending on the product, warehouse, carrier and destination. Delivery dates are estimates and are not guaranteed.

You will receive a tracking link as soon as your order ships. Freight carriers will contact you to schedule delivery.

Inspect the shipment carefully before accepting delivery. Note any visible damage on the carrier’s delivery receipt, take photographs and contact us within 48 hours. If the damage is substantial, refuse delivery after recording the reason with the carrier. Keep all packaging until the issue has been reviewed.

Curbside delivery means the driver will deliver to the nearest accessible location — they cannot bring items indoors or upstairs.

MRCOOL DIY® systems are designed for homeowner installation and use pre-charged Quick Connect® line sets. Installation must follow the product manual and all applicable local codes and permit requirements. Licensed electrical or HVAC work may still be required depending on your location and project.

Central, packaged, Universal® and other non-DIY systems generally require installation by a qualified HVAC professional. Installation requirements vary by product, so always review the product manual, warranty terms and local licensing requirements before purchasing.

Required tools vary by system and installation layout. Review the installation manual for the exact list before starting. Electrical work, permits or specialist equipment may require a qualified professional.

Installation time varies considerably according to the system, number of zones, electrical work, wall construction and site conditions. Review the installation manual and allow additional time for planning, permits and testing.

We can assist with product information, order documentation and locating relevant MRCOOL manuals and support resources. Installation, electrical work and technical diagnosis should be completed in accordance with the manufacturer’s instructions and, where required, by a qualified professional.

We accept the payment methods displayed at checkout, which may include major debit and credit cards and supported digital-payment options. All charges are processed in U.S. dollars.

Financing may be available through the provider displayed at checkout. Eligibility, credit decisions, rates and payment terms are determined by the financing provider. Review the provider’s terms before applying.

Sales tax depends on the delivery address and local regulations. The exact amount will be shown before you complete checkout.

Most declines are due to bank authorization or card verification issues. Try another card or contact your bank, then complete checkout again.

Checkout payments are processed through secure payment providers using encrypted technology. Available payment methods and the complete order total are shown before you submit your order.

Standard returns may be requested within 30 calendar days of delivery. Eligible products must be new, unused, uninstalled, complete and in their original manufacturer packaging. Prior written return authorization is required.

A 15% restocking fee applies to approved change-of-mind, incorrect-size and customer-ordering-error returns. The customer is also responsible for return shipping or freight. No restocking fee applies to products verified as damaged in transit, defective, incomplete or incorrectly supplied.

Contact us immediately if you need to cancel an order. A full refund is available only before fulfilment, freight booking or shipment preparation has begun. Once fulfilment has started, the order may no longer be cancellable and the standard return terms will apply.

Email support@coolheatdirect.com with your order number, product and model number, reason for the return and photographs where applicable. Do not ship anything until you receive written authorization and the correct return instructions.

We aim to inspect an authorized return within three business days of receipt. Once approved, the refund is issued to the original payment method within seven business days after inspection. Your payment provider may require additional time to display the refund.
This normally means the refund will be issued no later than 10 business days after the authorized return is received.

Warranty coverage varies by product and series. The applicable parts, compressor, registration and installation requirements are stated in the manufacturer’s warranty document for the specific model. Review the product documentation before installation.

Review the warranty document supplied with your product. Some products may require registration, while others include standard coverage without registration. Where registration is required or available, complete it using the model number, serial number and proof of purchase.

Yes. Products must be installed in accordance with the manufacturer’s instructions and applicable laws, codes, permits and licensing requirements. Some non-DIY warranty claims may also require proof of professional installation.

Warranty does not cover issues caused by incorrect installation, misuse, or physical damage after delivery. Consumables like filters and routine maintenance are also not included.

Warranty claims are reviewed under MRCOOL’s applicable warranty process. Cool Heat Direct can help customers locate order documentation, warranty information and manufacturer contact details, but warranty coverage and claim decisions are determined under the manufacturer’s terms.

Start with the room’s square footage, then consider ceiling height, insulation, windows, sun exposure, local climate and how the space is used. Our sizing guide and calculator provide a useful starting estimate, but larger, unusual or whole-home projects may require a professional load calculation before purchasing.

Yes. Outdoor temperatures, insulation quality, ceiling height, air leakage and the building’s construction can all affect the heating and cooling capacity required. A poorly insulated room or a space in a demanding climate may need more capacity than a similar-sized, well-insulated room.

Large windows and prolonged sun exposure can increase the room’s cooling load. Window size, orientation, glazing, shading and insulation should therefore be considered alongside floor area when selecting a system.

A single-zone mini-split is generally designed for one room or defined area. Some conditioned air may move into connected open spaces, but even temperatures in separate rooms cannot be guaranteed. For multiple enclosed rooms, consider a multi-zone system with a separate indoor unit for each zone, or an appropriate ducted solution.

An undersized system may struggle to reach the desired temperature during demanding weather. An oversized system may cycle too frequently, cost more than necessary and provide poorer comfort or humidity control. Accurate sizing helps the system operate more consistently and efficiently.

Low-temperature performance varies by series and model. Check the product’s rated operating range and heating-capacity specifications for your local winter conditions. Hyper-Heat models are designed for colder climates, but system sizing and building heat loss must still be considered.

Hyper-Heat units deliver more stable heating capacity in extreme cold, preventing drop-off in performance. They’re ideal for northern regions or homes that rely on heat pumps as the primary heat source.

In some homes, a properly designed heat-pump system can provide primary heating and cooling. Suitability depends on climate, building heat loss, system capacity and local installation requirements. A professional load calculation is recommended before replacing an existing primary heating system.

Inverter heat pumps adjust their output according to demand and can provide efficient heating when correctly sized and installed. Actual energy use and savings vary by climate, building condition, energy prices, system selection and usage.

Keep the outdoor unit free of snow and debris to maintain airflow. Regular filter cleaning and yearly check-ups ensure peak cold-weather performance.

Ensure the system is in the correct mode, clean the filters, and close windows/doors to maintain airflow. Clearing any obstructions around the outdoor unit can also instantly improve performance.

Condensation is normal during cooling mode and indicates the system is removing humidity. If water is leaking inside the home, the drain line may need clearing or adjustment.

Each code identifies a specific condition. Check your user manual or contact us — we can help interpret the code and guide you through the next steps.

Mini-splits adjust speed and temperature automatically. Short periods of cooler air or a brief “whoosh” sound can occur during defrost cycles and are normal.

First, check that the breaker is on and the remote has fresh batteries. If the problem continues, power-cycle both units by turning them off for a few minutes, then restart the system — and if needed, reach out to our support team for quick assistance.

MRCOOL DIY® systems are designed for homeowner installation and use pre-charged Quick Connect® line sets. Installation must follow the product manual and all applicable local codes, permits and licensing requirements. Licensed electrical or HVAC work may still be required depending on the location and project. Universal®, EasyPro® and Olympus® systems have different installation requirements, so review the specific product documentation before purchasing.

BTU requirements depend on floor area, ceiling height, insulation, windows, sun exposure, local climate and how the space is used. Our sizing guide provides a useful starting estimate, but unusual, multi-room or whole-home projects may require a professional load calculation before purchasing.

Pick single-zone for heating/cooling one room or area. Choose multi-zone if you want comfort across multiple rooms using one outdoor unit.

Low-temperature performance varies by series and model. Review the product’s rated operating range and heating-capacity specifications for your local winter conditions. Hyper-Heat models are designed for colder climates, but correct sizing and the building’s heat loss must still be considered.

In some homes, a properly designed heat-pump system may provide primary heating and cooling. Suitability depends on the climate, building heat loss, existing ductwork, electrical capacity, system sizing and local installation requirements. A professional load calculation is recommended before replacing an existing central system.

Contact our support team at support@coolheatdirect.com, by telephone at +1 (307) 429-3634 or through live chat during available hours. Our regular support hours are Monday–Friday, 9:00 AM–6:00 PM Eastern Time.

We assist with order documentation, delivery questions, product information and locating relevant manuals and manufacturer warranty resources. Technical diagnosis, repairs and installation work may need to be completed by MRCOOL or a qualified HVAC professional.

Most inquiries receive a reply within 1 business day, often much faster. Urgent delivery or installation issues are handled with priority.

We can help identify potentially compatible parts and accessories using the model and serial number. Final compatibility should be confirmed against the manufacturer’s product documentation before purchase.

Many product pages include available manuals and product documents. You may also contact us with the model number, and we will help locate the relevant manufacturer resources where available.