Wine cellar cooling unit repair in San Diego County.

Also covered in San Diego County

• 4S RanchBefore the houses, 4S Ranch land ran from nearly flat mesas and gentle hills to steep, rugged slopes between about 300 and 1,150 feet up.
• Black Mountain RanchBlack Mountain Ranch spreads across 5,100 acres of northern San Diego, north of Rancho Peñasquitos and west of 4S Ranch.
• BonitaHalf of Bonita's houses have at least four bedrooms, American Community Survey data show.
• CarlsbadCarlsbad averages 263 sunny days a year, and a few hot, dry Santa Ana days each year, mostly in the fall, bring its highest temperatures.
• Carmel Mountain RanchThe first plan for Carmel Mountain Ranch, drawn in 1971, called for about 6,200 homes and was never fully carried out.
• Chula VistaIn 1916 the Lower Otay Dam gave way in the Hatfield Flood, swamping the Otay River valley near Chula Vista and killing as many as fifty people.
• Del Mar MesaDel Mar Mesa covers 2,042 acres, more than 900 of them preserved habitat, with some 10 miles of trails.
• EastlakeBuilding in Eastlake got underway in 1986, early in the wave of planned communities that spread over Chula Vista's east side from the late 1980s.
• EscondidoOld Escondido Historic District is mostly single-family houses from the late 1800s and early 1900s, in Victorian and Craftsman styles.
• KensingtonThe Adams Avenue trolley reached Kensington Park in time for its 1910 opening, crossing Ward Canyon on a wooden trestle.
• La MesaAbout 10 miles from the ocean, La Mesa usually sees more extreme temperatures than San Diego, with average summer highs of 78 to 92 degrees F.
• Mission HillsAlong the canyon rims of Mission Hills, midcentury architects such as Lloyd Ruocco, Homer Delawie and John Lloyd Wright added modern houses as infill.
• North CoastalNorth County, with about 869,000 people, is the second most populous part of San Diego County and has long been its priciest region.
• North InlandSemi-rural inland communities such as Valley Center and Ramona, long given over to farming, now serve more and more as bedroom communities for the cities to their south and west.
• Otay RanchOtay Ranch, begun in 1999, spreads over 23,000 acres of east Chula Vista.
• PowayLarge parts of Poway were evacuated during both the 2003 Cedar Fire and the 2007 Witch Creek Fire.
• Rancho BernardoRancho Bernardo's landscape is one of canyons and rolling hills studded with large outcrops of bedrock.
• Rancho PeñasquitosBlack Mountain, the high point of Rancho Peñasquitos at 1,500 feet, looks over a community of about 60,000 people.
• San DiegoWeather in San Diego can change within a few miles, with a cool, damp marine layer near the shore giving way to clear sun 5 to 15 miles inland.
• San MarcosThe Pacific keeps San Marcos from extremes, so winter lows seldom drop below freezing and summer highs seldom pass 100 degrees F.
• Scripps RanchMore than 300 houses were lost on the south side of Scripps Ranch when the Cedar Fire came through in October 2003.
• South / CentralThe 2007 Harris Fire, part of that year's run of California wildfires, quickly closed in on the South Bay.