HVAC Zoning Systems
Motorized dampers and a zone panel so upstairs bedrooms, downstairs rooms and additions each get their own thermostat.
Learn moreTemple City, CA
AC zoning and new home HVAC in Temple City 91780, for big houses on older lots
Drive down almost any residential street off Las Tunas Drive or Rosemead Boulevard and you will see it: a 1950s one-story ranch house next to a new two-story home that fills most of its lot.
Temple City at a glance
- ZIP
- 91780
- County
- Los Angeles County
- Served from
- Duarte head office
- Phone
- (626) 879-0711
- Hours
- Open 24/7
Quick answer
Temple City has many large new two-story homes built where small postwar houses once stood, plus plenty of the originals still standing. Marco's technicians install and repair zoned AC and heating for the new homes and keep older systems running in the rest. Temple City is a short drive from our Duarte office. Call (626) 879-0711 any hour, 24/7, and we quote before we start.
Overview
Heating and cooling help in Temple City
Drive down almost any residential street off Las Tunas Drive or Rosemead Boulevard and you will see it: a 1950s one-story ranch house next to a new two-story home that fills most of its lot. Temple City has rebuilt itself one parcel at a time, and that creates two very different HVAC jobs on the same block. The older homes need furnace and AC repair on aging equipment. The newer homes need systems that can move air to five or six bedrooms across two floors.
Big new houses bring their own trouble. Builders often install one large system with long duct runs and a single thermostat in the downstairs hall. The result is a cold living room and a hot upstairs, or a system that short cycles because it is oversized for the mild months. Zoning, better return air and a second system for the upper floor are the usual fixes we discuss. We walk the house, take readings in each room and explain the options before quoting.
Postwar ranches and new two-story homes, side by side
The original Temple City houses date mostly from the 1940s and 1950s. They are single-story, with a furnace in a hall closet or the attic, ducts in the attic, and an AC condenser added later beside the house. Many still have their first duct system, with cloth-taped joints that have dried out and let attic air leak in. When those homes get a new AC or furnace, California's Title 24 rules can require a duct leakage test, so we look at duct condition before we quote a replacement.
The newer homes are large, often with high ceilings, tall windows and a second floor with several bedrooms and bathrooms. Some have two systems, one per floor; others have one system trying to do everything. Attic equipment above the second floor works hardest of all, sitting in heat that climbs far above the outdoor temperature on a July afternoon, with drain lines and control boards that suffer for it.
Common problems
What we fix most in Temple City
Hot upstairs, cold downstairs
A single system with one thermostat downstairs cannot read the upstairs heat. The downstairs reaches set point and shuts off while the bedrooms above stay warm and stuffy into the evening.
Oversized new systems
An oversized unit cools fast and shuts off before it removes much moisture or mixes the air. Short cycling wears on the compressor and leaves rooms uneven, especially in spring and fall.
Leaky original attic ducts
In the older ranch homes, attic ducts with dried tape and crushed sections leak cooled air into the attic. Owners notice weak airflow at the far bedroom and higher summer electric bills.
Undersized return air
Large homes often have one return grille for a big system. The blower strains, the filter whistles and the coil can freeze. Adding a return or a larger filter grille is often the fix.
Second-floor attic units overheating
Equipment in a second-floor attic sits in serious heat. Drain lines clog, condensate pans overflow into ceilings, and control boards fail. A float switch and regular drain cleaning prevent most of the damage.
Most requested
Why zoning and duct work lead in Temple City
Zoning systems use motorized dampers and a thermostat on each floor or wing, so a large Temple City home can cool the upstairs bedrooms at night without freezing the living room. A smart thermostat setup makes the zones easy to run from a phone. AC installation fits the second system some big houses need. Duct sealing helps the older ranch homes stop losing air to the attic. AC water leak repair handles overflowing attic pans, and furnace repair covers the cold nights of winter.
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.
Learn moreSmart Thermostat Installation
Smart thermostats installed with a proper C-wire and the right heat pump or two-stage settings, tested in every mode.
Learn moreDuct Sealing & Leak Testing
We measure duct leakage with a calibrated fan, seal joints with mastic, and test again so you see the actual improvement.
Learn moreAC Water Leak & Drain Line Repair
Water around the furnace or a stain on the ceiling: we clear the drain, fix the trap, replace pans and install float switches.
Learn moreFurnace Repair
No heat on a cold night? We trace the ignition sequence, find the failed part and fix most furnaces in a single visit.
Learn moreTemple City weather, utilities and scheduling
Temple City sits on the flat valley floor between Arcadia and Rosemead, so it gets the full summer heat of the San Gabriel Valley, often in the high 90s with heat waves above 100 F. Winter nights fall into the 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.
From our Duarte office we reach Temple City by Huntington Drive or Las Tunas Drive, and from Old Pasadena by Rosemead Boulevard straight south. For new homes still under construction, we can plan equipment and duct layouts before the drywall goes up, which costs far less than fixing airflow later. Owners in the middle of a rebuild can call (626) 879-0711 and set a time for us to walk the framing with the builder.
Questions
Temple City heating and cooling questions
Usually, yes. We check whether the ducts can be split into an upstairs and downstairs zone, whether the blower can handle zoning, and where dampers can go in the attic. Variable-speed equipment handles zones best. Sometimes a second system for the upper floor is the better answer. We explain the tradeoffs after measuring and quote the price before we start the work.
New does not mean right-sized or well balanced. Common causes are an oversized unit that short cycles, too little return air, long duct runs to the far bedrooms and a single thermostat in the wrong spot. We measure airflow at each register and temperature in each room, then show you what is causing the difference before suggesting any fix.
Not always, but often the ducts are as old as the house. When an AC or furnace is replaced, California's Title 24 rules can require a duct leakage test. If the old ducts leak badly, sealing may bring them into line, or replacement may be the better value. We inspect the ducts in the attic first so the quote reflects what is really there.
Yes. If your Temple City rebuild is still at the framing stage, we can work out equipment size, zoning, duct routes and return air with you and your builder. Planning early avoids cramped attics, missing returns and hot bedrooms later. Call (626) 879-0711 and we will set a time to look at the plans and the site.
Heating or cooling trouble in Temple City?
Call our Pasadena line any hour. A person answers, asks a few questions about the system, and gives you an arrival window.
(626) 879-0711Answering 24 hours, 7 days