Homeowners throughout The Colony and the Lewisville ISD area bring this topic up often, particularly those near Lewisville ISD. This guide covers what we tell them.
For The Colony Homeowners
The Colony falls within Lewisville ISD, in Denton County, and like the rest of the DFW Metroplex, homes here deal with the same demanding summer heat and occasional winter freezes that make this topic relevant across North Texas. What changes city to city isn't the underlying HVAC principles, it's the mix of home ages and system types we see, and The Colony has its own particular blend.
The Colony, zoned to Lewisville ISD, sits along Lake Lewisville with a mostly established housing stock built out over the past few decades. Lake-adjacent humidity is a real factor here, worth accounting for during any cooling diagnostic or maintenance visit.
What the Full Guide Covers
- The furnace runs through a cycle but never lights
- Nothing happens at all when the thermostat calls for heat
- The furnace lights, then shuts off a few seconds later
- A blinking light on the furnace itself
- What we actually do about it
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