How do I size Signature equipment?

Use a heating and cooling load calculation, duct assessment and exact-model performance data. Floor area alone does not determine the correct equipment. Start with our sizing resource.

Is every Signature product an inverter system?

No. Conventional Signature equipment and TruInverter models are distinct. Check the exact model and matched-system documentation.

Can homeowners buy Signature equipment?

Yes. Homeowners and professionals can purchase it online. Signature is not a DIY-install product family; plan traditional HVAC installation with a qualified professional and follow applicable licensing, codes and MRCOOL instructions.

Does a condenser include an air handler?

Only a listing that expressly identifies a complete matched system includes the specified indoor and outdoor equipment. A component listing is not a complete system.

How should I compare efficiency?

Use SEER2, EER2 and HSPF2 where applicable for the exact tested indoor/outdoor combination. Do not apply a different model’s rating to your purchase.

What temperature range can the system handle?

Read the exact model’s heating and cooling operating limits and capacity data for your design conditions. Do not assume capacity remains unchanged at extreme temperatures.

Can I use DIY pre-charged line sets with Signature?

Do not select a DIY quick-connect line set based only on capacity or refrigerant. Signature uses traditional HVAC installation. Follow its exact-model connection requirements and manufacturer-approved matching.

Where can I check warranty requirements?

Use the warranty PDF linked on the exact equipment page. Installation, matching, maintenance, authorized-dealer purchase and other conditions apply. Keep proof of purchase and installation documentation. Optional CPS protection is separate.

MRCOOL Signature Series | Premium HVAC Systems

PRO-GRADE HVAC SYSTEMS

MRCOOL Signature Series Built for Real-World Performance

Shop Signature Series condensers, indoor air handlers and complete systems for traditional HVAC installations. Compare the exact equipment, matched-system ratings and installation documents before choosing.

Pro grade MRCOOL Signature Series HVAC system designed for extreme temperature performance and all season comfort

Traditional HVAC equipment, available to homeowners and professionals. Signature is not a DIY pre-charged system. Choose the exact component or matched system you need; plan installation with a qualified HVAC professional. Get equipment-selection help.

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MRCOOL Signature Series HVAC Buying Guide

Frequently Asked Questions