AC Repair
Warm air, a humming outdoor unit or a tripped breaker: we find the failed part and fix most AC problems in one visit.
Learn moreOrange County
North county AC and furnace service in Orange County, Brea and Fullerton along the 57
Orange County stretches from the Los Angeles County line all the way down the coast, but we do not cover most of it.
Orange County at a glance
- Served from
- Duarte head office
- Phone
- (626) 879-0711
- Hours
- Open 24/7
Quick answer
Marco's serves only the north edge of Orange County, the part closest to our Duarte office along the 57: Brea, Fullerton and nearby north county neighborhoods. Homes here range from older houses near the downtowns to postwar tracts and newer hillside homes. Our own technicians repair and replace AC, furnaces and heat pumps, and fix ducts. Call (626) 879-0711 any hour, 24/7.
Overview
Heating and cooling help in Orange County
Orange County stretches from the Los Angeles County line all the way down the coast, but we do not cover most of it. We serve the north edge, where the 57 comes down over the hills from the San Gabriel Valley into Brea and Fullerton. That is the part of the county we can reach well from our Duarte head office. If you are farther south, we are not the right company for your call.
North Orange County is a little milder than the inland valley, but it is still warm and dry in summer, and heat waves push well into the 90s. Winters are mild, with cool nights. Homes here include older houses near downtown Brea and downtown Fullerton, large postwar neighborhoods and newer homes in the hills. That mix means everything from wall furnace repairs to heat pump installs.
North county housing and what it means for HVAC
The older homes near downtown Brea and downtown Fullerton were often built with wall or floor furnaces and no cooling. Some have had central air added through the attic, and others rely on window units. The postwar and 1960s tracts across both cities are mostly single story, with closet or attic furnaces and attic ducts that were sized for heating. When central air was added later, those ducts often became the weak link.
Newer homes in the hills are often two stories with attic air handlers and large windows. They tend to run hot upstairs on summer afternoons and benefit from zoning or better return air.
Common problems
Common HVAC problems in north Orange County
Ducts too small for cooling
Tract homes that added central air later often have ducts sized for heat. Weak airflow, warm end rooms and frozen coils are common results.
Aging furnaces and AC together
Many homes have a furnace and AC of similar age. When both are worn, a single heat pump can replace them and work well in this mild climate.
Old wall and floor furnaces
Older homes near the downtowns still use original wall or floor furnaces. They need safety checks, and parts can be hard to find for old models.
Hot upstairs in hill homes
Two-story homes in the hills get strong afternoon sun. With one downstairs thermostat, upstairs bedrooms stay warm well into the evening.
Dusty coils after wind events
Santa Ana winds push dust and leaves into outdoor coils. Dirty coils raise pressures and power use and shorten compressor life.
Most requested
The services north county homes need most
AC repair leads in summer, and furnace repair takes over on the first cold nights. Heat pump installation is a strong choice when an AC and furnace are both aging, since one system handles both jobs in this climate. Duct replacement fixes the weak airflow common in tract homes. Mini-split installation works well in older homes and rooms without ducts. An HVAC maintenance plan keeps both heating and cooling checked each year, which matters more when we plan longer drives to reach you.
Furnace 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 moreHeat Pump Installation
New ducted and inverter heat pumps sized to your Pasadena home, with permits, line sets, electrical and duct checks included in the quote.
Learn moreDuctwork Replacement
New attic ductwork sized for your rooms and equipment, sealed with mastic and leak tested before we call the job done.
Learn moreDuctless Mini-Split Installation
Ductless heat pumps for Craftsman bungalows, additions, converted garages and hot upstairs rooms, with head styles chosen room by room.
Learn moreHVAC Maintenance Plans
Two visits a year, cooling in spring and heating in fall, so small problems get caught before a heat wave or a cold night.
Learn morePractical notes for north Orange County homeowners
Spring and fall are the best times to plan a replacement in north Orange County, before summer heat or the first cold snap. We handle the permit where the city requires one, and Title 24 can require a duct leakage test when an AC or furnace is replaced, so we check the ducts during the estimate. Many hillside neighborhoods have HOA rules on outdoor equipment.
After wind events, check the outdoor unit for leaves and debris. During heat waves, close west-facing blinds, keep the filter clean and hold the thermostat steady. Call (626) 879-0711 any hour if something seems wrong.
How we serve the north edge of Orange County
We reach north Orange County from our Duarte office by driving south on the 57, through the hills past Diamond Bar and Rowland Heights. Brea is the first city we reach, and Fullerton sits just to the west. Because this is the south edge of our service area, we plan each visit carefully. When you call, we ask about the equipment, its age and what it is doing, so the technician arrives with the parts the job is most likely to need. That keeps second trips to a minimum.
The cities we serve here are Brea, with its older downtown streets, mid-century tracts and hillside homes toward Carbon Canyon, and Fullerton, with its older homes near downtown, postwar neighborhoods and north side hills. We also cover nearby north county neighborhoods close to those two cities. Electricity in Brea and Fullerton 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.
Questions
Orange County heating and cooling questions
We serve only the north edge of Orange County, closest to our Duarte office along the 57: Brea and Fullerton, plus nearby north county neighborhoods. We do not travel into central or south Orange County. If you are not sure whether your address is in range, call (626) 879-0711 and we will tell you right away, any hour of the day.
North Orange County has mild winters and warm summers, which suits a heat pump well. One system cools like a central AC and heats efficiently on cool nights, replacing both an aging furnace and AC. We check your electrical panel, ducts and home size before quoting. Ask about current SCE or SoCalGas rebates and state heat pump incentives when funding is open.
North Orange County is the south edge of our area, a run down the 57 from our Duarte office. We plan each visit before the technician leaves, asking about your equipment and the problem so the truck carries the most likely parts. That cuts return trips. We answer 24/7 at (626) 879-0711 and give an honest arrival window.
Often they do. Older homes near downtown Fullerton and downtown Brea in Orange County may have wall or floor furnaces, small attics and rooms with no ducts. We often recommend ductless systems or careful duct design rather than forcing large ducts into tight spaces. We inspect the home first, then explain the options and prices before starting any work.
Heating or cooling trouble in Orange County?
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