Furnaces & Air Handlers

Central Air Systems • Indoor Units

Indoor Units for Central A/C & Heat Pumps - Furnaces & Air Handlers

The Furnaces & Air Handlers category brings together the indoor half of your central air system, whether you’re pairing a gas furnace with a split A/C, or an all-electric air handler with a heat pump. Here you can browse OEM and compatible indoor units that drive airflow, house coils, and deliver reliable comfort for residential and light-commercial installations.

A matched indoor unit and outdoor condenser is critical for efficiency, comfort, and warranty coverage. Furnaces provide gas or LP heating with ECM or PSC blower motors, while air handlers combine electric heat strips or hydronic coils with variable-speed blowers for heat pump applications. In this section you’ll find options for upflow, downflow, horizontal and multi-positional installs to fit tight closets, basements, attics, and mechanical rooms.

  • Gas and LP furnaces in common BTU inputs and AFUE ratings, with single-stage, two-stage and modulating burners.
  • Air handlers for straight cool and heat pump systems with factory coils, TXVs, and electric heat kit options.
  • ECM and multi-speed blower configurations designed for quieter operation and improved airflow control.
  • Cased and uncased coil options to match existing furnaces or new installations by tonnage and refrigerant type.
  • OEM accessories and install parts such as filter racks, drain pans, float switches, and downflow kits.

When you’re selecting a furnace or air handler, don’t just match tonnage by eye. Confirm system capacity, blower CFM, static pressure, orientation, venting requirements, gas line sizing, electrical data, and coil compatibility with the outdoor unit and refrigerant (R-410A or R-454B, depending on model). Use the Compare tools on this page to review AFUE or electric heat kW, blower type, cabinet size, and configuration so you can avoid callbacks and airflow issues.

Pro tip: Before replacing an indoor unit, capture the existing model & serial, wiring diagram, breaker size, duct connections, and venting layout. Note supply and return sizes, filter location, and any static-pressure pain points. Share those details and we can help you line up a properly sized furnace or air handler, matching coil, and required OEM accessories so your new central air system starts up cleanly and hits its published efficiency ratings.

Indoor furnace and air handler units for central air systems

Furnaces & Air Handlers Category Overview

The Furnaces & Air Handlers category at HVACProSales.com covers indoor units for central air conditioning and heat pump systems, including gas and LP furnaces, all-electric air handlers, matched coils, and OEM accessories. Contractors can compare BTU inputs, AFUE ratings, blower type, orientation, cabinet size, and coil compatibility to select properly matched indoor equipment for residential and light-commercial jobs.

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