Lancaster homes, by the numbers
Lancaster is a city of about 169,000 people in some 52,000 homes, by the Census Bureau’s latest five-year survey (Census Reporter). Seven in ten are single-family houses, and the typical home was built around 1986; about six in ten went up before 1990. Most heat the way they were built, with gas: about 80 percent of Lancaster homes heat with utility gas and about 17 percent with electricity.
That shapes the work. A house from the 1980s or 1990s may be on its second or third air conditioner, often still connected to its original ducts in the attic. ENERGY STAR estimates a typical duct system loses 20 to 30 percent of its air to leaks and poor connections, so when a Lancaster system is replaced the ducts deserve a look too, and ductless is worth weighing for the rooms the ducts never served well.
Gas furnace, heat pump or both
With most Lancaster homes on gas heat, the usual setup is a gas furnace inside and an air conditioner outside. When both are old, a heat pump can replace them with one outdoor unit that heats and cools. ENERGY STAR’s replacement guide treats an air conditioner more than 10 years old and a furnace more than 15 as candidates for replacement.
Valley winter nights are cold but mild by heat pump standards; WeatherSpark’s Palmdale averages put the December average low at 34°F, and ENERGY STAR tests cold climate heat pumps down to 5°F. Some owners keep the furnace as a backup while a heat pump or mini-splits carry most of the year. Which fits depends on the house, the age of each piece and the ducts, and we go over it at a free in-home consultation. See AC and heating replacement.
Permits and the energy code in Lancaster
Replacing an air conditioner, furnace or heat pump, or adding a mini-split, needs a permit in California. Since September 1, 2025, Lancaster takes residential HVAC permits through Symbium, its online permit system. The contractor doing the work pulls the permit.
Lancaster is in California building Climate Zone 14, which sets the efficiency rules a new system has to meet. Our guide to HVAC permits in the Antelope Valley walks through the inspection and the testing that follows.
Homes and businesses
We work on homes and on commercial buildings in Lancaster, from a single mini-split to a full system replacement, and we repair the systems you already have.
