Frontenac covers under three square miles of west St. Louis County, yet nearly every one of its roughly 1,197 occupied homes is a detached house — 95% according to Census estimates. Median construction year is 1969, which in this suburb usually means large two-story or sprawling ranch layouts on wooded lots, often served by more than one heating system.
Who supplies the equipment
Furnace Direct (a DBA of Hamlin Mechanical LLC) is an online seller of furnaces and matched cooling, coordinating installation through licensed partners around St. Louis.
Multi-zone homes, multiple furnaces
With gas heating 89% of Frontenac households, most owners compare Goodman two-stage or variable-speed gas units. Big footprints reward modulation: a furnace that runs long and low keeps distant bedrooms closer to setpoint than one that blasts and shuts off. Houses with a basement unit plus an attic unit should have each zone sized on its own.
What matters in larger houses
Additions, finished lower levels, and replacement windows since 1969 shift the heat load. Ductwork that once fed one floor may now feed two. A Manual J calculation sorts this out better than copying nameplates.
Evaluating contractors in west County
Compare bids on matching blower size, zoning dampers, condensate routing, and the St. Louis County permit and inspection. Ask whether both furnaces will be replaced together or staged.
Best season
Spring through early fall leaves room to schedule two systems in one visit before demand peaks.
Start here
Gather model numbers for every unit and Call for Pricing at (888) 762-1334.
Local data: U.S. Census Bureau ACS 5-year estimates via Census Reporter.
Get your system replaced.
Tell us a little about your home and what you're replacing. A specialist will call you to work out exactly what you need, go over the price, and get it replaced. No obligation.