TX HVAC Contractor case studies
TX HVAC Contractor · Put your knowledge to work in context.
The Texas Air Conditioning and Refrigeration (ACR) Contractor license is a state credential administered by the Texas Department of Licensing and Regulation (TDLR). TDLR states that contractors who install, repair, or maintain systems related to air conditioning, refrigeration, or heating must hold a TDLR license, and that ACR companies must employ an ACR contractor in each permanent location. The TX HVAC Contractor case studies are 5 cases and about 3,077 words.
1High Static Pressure and Low Subcooling on a 3-Ton R-410A Split System
A 3-ton R-410A split system serves a 1,800 sq ft house. Outdoor ambient is 95°F DB; indoor return is 75°F DB/63°F WB.
596 words, about 3 min2Spillage and Elevated CO from a Closet Furnace
A 100,000 Btu/h, 80% AFUE induced-draft furnace is in a 6 ft x 8 ft x 8 ft closet with a solid door. The door has one 18 in.
673 words, about 3 min3Freezer Floodback: Overcharge or Stuck-Open TXV
A 1.5 hp low-temperature walk-in freezer using R-404A will not pull below 10°F; the thermostat is set for 0°F. The box is 8 ft x 10 ft x 8 ft with 4 in.
559 words, about 3 min4Conductor, Breaker, and Voltage-Drop Compliance for a 5-Ton Condenser
A 5-ton condenser nameplate lists 31.5 A minimum circuit ampacity and 40 A maximum overcurrent protection. The existing circuit is a 40 A breaker with 10 AWG copper NM-B cable, about 120 ft from the panel, run through a hot attic.
630 words, about 3 min5Sunroom Addition: Rule-of-Thumb Sizing and Duct Capacity
A homeowner with a 2,000 sq ft, 1998-built house in Houston has a 3.5-ton split system and wants to add a 300 sq ft sunroom with 12 windows and no shade. The existing trunk is 20 in.
619 words, about 3 min