Case Studies
Documented challenges, solutions, and outcomes from real projects.
High-Efficiency AC Installation for a 1970s Mueller Bungalow
Mueller, TX
HVAC Demo replaced a failing 18-year-old central air conditioner with a properly sized high-efficiency system for a single-story bungalow near Mueller.
Outcome: The home now holds 74 degrees through the hottest part of the afternoon without the system running continuously. The homeowner reported a noticeably lower electric bill the first full month after installation and said the house felt more even from room to room. Static pressure readings came in within the manufacturer's recommended range, and the new equipment registered for a 10-year parts warranty. The client called the process straightforward and appreciated the load calculation being explained before any equipment was ordered.
Furnace Repair Restores Heat to a Hyde Park Duplex
Hyde Park, TX
A mid-winter furnace failure left both units of a Hyde Park duplex without heat, and HVAC Demo traced the problem to a failed inducer motor and cracked flame sensor assembly.
Outcome: Both units were heating again the same afternoon the parts arrived, and the tenants reported consistent warmth through the rest of the cold stretch. Combustion readings came back within normal range, and the heat exchanger inspection confirmed no cracks or blockage. The property owner avoided a full furnace replacement and scheduled annual maintenance for both sides of the duplex. The repair has held through two subsequent heating seasons without a callback.
Full Ductwork Replacement in a Cedar Park Ranch Home
Cedar Park, TX
HVAC Demo replaced crushed and disconnected flex duct throughout a Cedar Park ranch home to fix uneven temperatures and high summer energy use.
Outcome: Temperature variance between the front and back of the house dropped to about two degrees, which the homeowner confirmed over several weeks of summer weather. Measured duct leakage fell by more than half, and the runtime on the existing air conditioner decreased noticeably during peak hours. The homeowner remarked that the back bedrooms finally felt like part of the same house. The attic ductwork was photographed before and after so the client could see exactly what had been corrected.
Cold-Climate Heat Pump Installation in Travis Heights
Travis Heights, TX
A Travis Heights homeowner replaced an aging gas furnace and AC combination with a high-efficiency heat pump to cut energy costs and reduce fossil fuel use.
Outcome: The homeowner ran the heat pump through a January freeze without losing indoor temperature, and the supplemental heat came on only briefly during the coldest overnight hours. Summer cooling performance improved as well, with the home reaching setpoint faster than the old system ever managed. The client reported lower combined energy costs and successfully claimed the efficiency tax credit using the commissioning documentation. The heat pump has run for two full seasons without a service call.
Smart Thermostat and Zoning Controls for a Westlake Hills Home
Westlake Hills, TX
HVAC Demo upgraded a three-zone Westlake Hills home to smart thermostats and a communicating control system to reduce energy waste in rarely used rooms.
Outcome: The homeowners were able to shut down conditioning in the two guest rooms for most of the year, which produced a measurable drop in summer runtime hours. They now check and adjust the system from their phones while traveling, which eliminated the habit of leaving everything running out of uncertainty. Zone scheduling also reduced the number of times the system ran with no one home. The client said the upgrade was the first time the zoning in the house actually made sense.
Commercial HVAC Retrofit for a South Congress Retail Building
South Congress, TX
HVAC Demo retrofitted a multi-tenant retail building on South Congress with new split systems and a controls overhaul to resolve persistent comfort complaints.
Outcome: Tenant comfort complaints dropped to zero over the following cooling season, and both businesses stopped using portable heaters and fans. The property manager can now see runtime and setpoints for every unit remotely and address issues before they become complaints. Building energy use per square foot declined compared to the prior year despite a hotter summer. The owner has since asked HVAC Demo to quote a similar retrofit on a second property.
Emergency HVAC Repair Saves a Round Rock Family During a Heat Advisory
Round Rock, TX
HVAC Demo responded to a same-day emergency call when a Round Rock family's air conditioner failed during a heat advisory with an infant in the home.
Outcome: The home was cooling again within hours of the call, and the family avoided an unnecessary full system replacement. The homeowner was given a written summary of the readings and a recommendation to plan for replacement within the next few years rather than immediately. Following up a week later, the client confirmed the system was holding temperature normally. The invoice came in at a fraction of the replacement quote the family had originally received.
Rooftop Unit Replacement for a Pflugerville Office Building
Pflugerville, TX
HVAC Demo replaced two failing rooftop units on a Pflugerville office building, restoring reliable cooling to a full floor of workstations.
Outcome: The new units were running before the building opened Monday morning, and the affected floor held temperature through the remainder of the summer without a single downtime event. Building management noted that the corrected duct transitions also improved airflow in the previously stuffy corner offices. Energy consumption on the two replaced units dropped compared to the prior year's readings. The owner scheduled the remaining three units for evaluation the following budget cycle.