AC Installation
First-time central air for older Pasadena homes, sized by a room-by-room load calculation and fitted to your attic and floor plan.
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Los Angeles CountySan Bernardino CountyOrange CountyPomona, CA
Pomona is one of the older cities in eastern Los Angeles County, and its housing shows it.
Pomona has some of the oldest housing in our service area, with Victorian and Craftsman homes in its historic districts, plus postwar tracts and newer hillside homes in Phillips Ranch. Many older homes still rely on floor or wall furnaces and have no central air. Marco's technicians install AC, replace furnaces and repair ducts across Pomona. Call (626) 879-0711 any hour, 24/7.
Overview
Pomona is one of the older cities in eastern Los Angeles County, and its housing shows it. Historic districts such as Lincoln Park and Wilton Heights hold Victorian, Craftsman and period revival homes from the late 1800s through the 1920s. Downtown has its arts colony, and Fairplex, home of the LA County Fair, sits on the north side of the city. Cal Poly Pomona is on the west side near the 10 and the 57.
Pomona summers are hot, often hotter than Pasadena, and many older homes were built long before central air. Owners who want cooling face real choices: fitting ducts into a historic house, going ductless, or upgrading an old system that has been patched for decades. Our technicians reach Pomona from our Duarte office on the 210 or the 10. We explain the options plainly and quote the price before we begin.

Homes in Pomona's historic districts often have raised wood floors with crawl spaces, plaster walls, high ceilings and tall windows. Many were heated by floor furnaces set into the hallway, or by wall furnaces added later. Central AC, when present, was usually added decades after construction, with ducts squeezed through the attic or crawl space. These homes need careful planning so new equipment fits without damaging original details. We work around original trim, floors and plaster rather than through them.
Postwar homes from the 1940s and 1950s fill much of central and south Pomona, often with closet furnaces and attic ducts. Phillips Ranch, in the hills on the southwest side, has newer two-story tract homes from the 1970s onward with attic furnaces and split AC systems. Phillips Ranch houses sit on slopes with afternoon sun on many sides, and the upstairs bedrooms there are usually the hardest rooms to cool in the whole house.
Common problems
Floor furnaces in older Pomona homes sit under a hot metal grate, collect dust and debris, and often have worn controls. Many owners replace them with a ducted furnace or a heat pump.
Many historic homes have no cooling beyond window units. Adding ducts through crawl spaces or attics, or installing ductless units, brings real comfort through Pomona's hot summers.
Ducts running through crawl spaces in raised-floor homes get crushed, disconnected or chewed by animals. Air is lost under the house and rooms above stay uncomfortable.
AC added years ago to postwar homes is often too small for Pomona's inland heat. It runs all afternoon and cannot reach the set point. Sizing and duct checks guide the fix.
Two-story homes on the hills in Phillips Ranch have attic air handlers that bake in summer. Drain clogs, failed boards and warm upstairs rooms are frequent complaints.
Most requested
AC installation is a large part of our work in Pomona because so many older homes never had central air. Floor furnace replacement removes outdated equipment and opens the door to ducted heating and cooling. Furnace replacement and duct replacement fix postwar systems that have aged out. Mini-split installation is often the best fit in historic homes where ducts would harm original features, and HVAC system replacement covers the Phillips Ranch homes ready for a full change of equipment.
First-time central air for older Pasadena homes, sized by a room-by-room load calculation and fitted to your attic and floor plan.
Learn moreOld floor grate heaters removed and replaced with a new floor furnace, a wall furnace, a ducted system or a ductless heat pump.
Learn moreAn old furnace swapped for a right-sized new one in the same attic, closet or garage, with venting, ducts and permit handled.
Learn moreNew attic ductwork sized for your rooms and equipment, sealed with mastic and leak tested before we call the job done.
Learn moreDuctless heat pumps for Craftsman bungalows, additions, converted garages and hot upstairs rooms, with head styles chosen room by room.
Learn moreFurnace, coil and condenser or a heat pump replaced together as a matched system, with duct testing and the city permit handled.
Learn morePomona summers often pass 100 F during heat waves and regularly sit in the high 90s, and winter nights can drop into the 30s and 40s. Electricity comes from Southern California Edison and gas from SoCalGas. Ask about current SCE or SoCalGas rebates and state heat pump incentives when funding is open. We handle the permit where the city requires one, and California rules can require duct leakage testing when a system is replaced.
From our Duarte office we take the 210 east or the 10 depending on traffic. Homes in historic districts often have narrow driveways, detached garages and alley access. During the LA County Fair, streets near Fairplex get busy, so we plan arrival times around it. Call (626) 879-0711 any hour, 24/7. We bring drop cloths and floor protection for older homes with original wood floors.
Questions
Yes, in most cases. In Pomona's historic homes we look at the attic, the crawl space and closets to find duct paths that avoid damaging original details. Where ducts would not fit well, ductless mini-splits are a good alternative. We explain both approaches, show where equipment and registers would go, and quote each option before you decide.
Common choices are a ducted gas furnace with AC, a ducted heat pump, or ductless heat pump units. In raised-floor Pomona homes, a furnace or air handler can often sit in the crawl space or a closet with ducts underneath. We inspect your home, explain the trade-offs in comfort and cost, and safely cap the old gas line once the floor furnace is removed.
Pomona's inland heat pushes systems hard. Common causes are an undersized system, leaking crawl space or attic ducts, low refrigerant or poor attic insulation. We check the system's capacity, airflow, charge and ducts, and explain what is holding back cooling. Sometimes duct repair fixes it, and sometimes the system is simply too small for the house.
Yes. Phillips Ranch homes in Pomona often have attic air handlers and a hot second floor. We clear drain lines, add float switches, check attic ducts and measure upstairs airflow. Fixes can include added returns, duct changes, zoning or a new system sized for the house. Call (626) 879-0711 any hour to schedule.
Call our Pasadena line any hour. A person answers, asks a few questions about the system, and gives you an arrival window.