Furnace Repair, Tune-Ups & New Installations in Corsicana, TX

Single-Stage, Two-Stage and Modulating Furnaces

Gas furnaces differ mainly in how finely they can control their own output, and that difference shows up in comfort as much as in operating cost.

A single-stage furnace fires at 100% output whenever it runs. It is simple and dependable, and it is why older homes see warm and cool swings between cycles. A two-stage furnace operates at two levels, typically around 65% and 100% capacity, so mild days are handled on low fire. A modulating furnace adjusts incrementally, often in 1% increments, holding a much steadier temperature.

Which one suits your home depends on the house, not the brochure. We size every replacement with a load calculation and walk you through the trade-offs before you commit.

Understanding AFUE Ratings

AFUE stands for Annual Fuel Utilization Efficiency, and it describes how much of the gas you buy becomes heat in your home.

• check_circle80% AFUE - An 80% efficient furnace converts 80% of fuel to heat, losing 20% through the exhaust
• check_circle95%+ AFUE - A 95% efficient furnace converts 95% to heat, losing only 5%
• check_circleCondensing models - High-efficiency furnaces produce condensation and use PVC venting rather than traditional metal flue pipes, which affects what installation involves
• check_circleEquipment life - Furnaces average fifteen to twenty years of service with proper care, commonly dropping to ten to twelve without maintenance