Air Duct Cleaning
Camera inspection first, then negative-pressure HEPA cleaning of supply, return, blower and coil when your ducts actually need it.
Learn morePasadena neighborhood
Furnace repair and smoke-aware duct cleaning in Historic Highlands, Pasadena 91104
Historic Highlands is a landmark district in north Pasadena that runs up to the Altadena border.
Historic Highlands at a glance
- ZIP
- 91104
- City
- Pasadena, CA
- County
- Los Angeles County
- Served from
- Old Pasadena office
- Phone
- (626) 879-0711
- Hours
- Open 24/7
Quick answer
Historic Highlands sits in north Pasadena along the Altadena line, so many homes here took in smoke and ash during the January 2025 Eaton Fire. Marco's inspects and cleans ducts, replaces filters, checks furnaces and adds whole-home filtration where it helps. A technician looks at the system first and quotes the price before starting. Call (626) 879-0711 any time, day or night.
Overview
Heating and cooling help in Historic Highlands
Historic Highlands is a landmark district in north Pasadena that runs up to the Altadena border. The streets climb gently toward the San Gabriel Mountains, and the blocks are lined with modest Craftsman bungalows, period revival cottages and homes from the 1920s through the early 1940s. It is a close-knit area where many owners have lived in their houses a long time and have updated them a piece at a time.
After the Eaton Fire, a lot of homeowners here started asking the same questions: is there ash in the ducts, is the furnace safe to run, and what filter actually helps on smoky days. We answer those calmly and with a look at the actual system. Some homes need a full duct cleaning and new filters. Others only need an inspection that confirms the system is fine. We tell you which one applies before we do any work.
Bungalows, cottages and the systems inside them
The housing in Historic Highlands is mostly single-story bungalows and cottages, built from the 1910s into the early 1940s. Many sit on raised foundations with a crawlspace, which is where the original gravity or forced-air furnace often lived. Others were heated with a wall furnace in the hallway or living room, and some of those wall furnaces are still running today. Central air came later, typically as a furnace and coil in a closet or garage with ducts run across a low attic.
Because many systems were added in stages, it is common to find a newer furnace connected to older ductwork, or a recent condenser paired with an old coil. Return air is often too small. We look at the full path of air, from the return grille to the last register, before recommending repairs.
Common problems
What we find most often in Historic Highlands homes
Ash and soot in ducts
Fine ash and soot can settle in return ducts, on blower wheels and on coils, especially if the system ran during smoky days. It can cause odor when the heat first comes on and restricts airflow over time.
Clogged or wrong-size filters
Many homes use a thin filter in a slot that does not fit snugly. Air slips around the edges, carrying dust and smoke particles straight to the coil and back into the rooms.
Wall furnaces past their prime
Older wall furnaces can have worn pilot assemblies, weak thermocouples, or rusted vent connections. Some have no safety shutoff that would meet current expectations, so we test and inspect carefully.
Leaky attic return ducts
A return duct that leaks in the attic pulls in hot, dusty attic air in summer. That raises cooling costs and brings attic dust, and any settled ash, into the living space.
Smoky smell when heat starts
A burning or smoky smell on the first cold night is often dust on the heat exchanger. If it lingers or smells sharp, it needs a technician to check the burners, venting and duct interior.
Most requested
Why duct cleaning and furnace care matter here
Being close to Altadena means smoke and ash were a real concern in this part of Pasadena, and wildfire smoke can return in future seasons. A camera inspection of the duct interior tells us whether cleaning is needed or whether a filter change is enough. When cleaning is warranted, we use negative pressure equipment and brush the trunk lines and branches, then clean the blower and check the coil. We also repair or seal leaking return ducts, because a sealed system keeps smoke out better. For furnaces, we test ignition, flame, venting and the heat exchanger before the cold season.
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 moreWhole-Home Air Purifiers
Media filter cabinets and electronic air cleaners built into your HVAC system, sized so they clean the air without choking airflow.
Learn moreIndoor Air Quality Testing
We measure particles, humidity, CO2, VOCs and carbon monoxide in your home, find the sources and explain what would actually help.
Learn moreWall Furnace Repair
Pilot lights, thermocouples, gas valves and fans on gravity and fan-type wall furnaces, with a venting and CO check every visit.
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 moreLocal notes for Historic Highlands
Electricity in Historic Highlands comes from Pasadena Water and Power and gas from SoCalGas. Ask about current PWP or SoCalGas rebates and state heat pump incentives when funding is open, especially if you are thinking about replacing an old wall furnace. As a landmark district, exterior equipment changes may need review, and we handle the permit where the city requires one. If a furnace is replaced, California energy rules can call for a duct leakage test, which we explain up front.
On smoky days, keep windows closed, set the system fan to run with a good filter in place, and call us if the filter darkens quickly. Late summer and early fall are good times to book a furnace check before the first cold nights in the 40s.
Nearby areas we also cover
Questions
Historic Highlands heating and cooling questions
Not every home needs it, which is why we inspect first. A technician looks inside the return and supply ducts with a camera, checks the blower wheel and coil, and looks at the filter. If ash or soot has settled, we clean the full system and replace the filter. If the ducts look clean, we tell you so and you only pay for the inspection.
If the heat exchanger, gas valve and vent are in good shape, a repair can make sense. If parts are hard to find, the cabinet is rusted, or it is the only heat for the whole house, replacement may be the better value. Options include a newer wall furnace, a ducted furnace, or a ductless heat pump. We quote each before starting work.
Use the highest-rated filter your system can move air through without strain, and make sure it fits the slot tightly. Many systems handle a pleated filter well, and some benefit from a deeper media cabinet. We check your blower and return size, then recommend a filter or whole-home air purifier that suits it. Change filters more often when air quality is poor.
Yes. Call (626) 879-0711 any hour and we will send a technician. A strong smoky or burning smell can come from dust, a failing motor, or a venting problem, so turn the furnace off until it is checked. If you smell gas, leave the home and call SoCalGas from outside first. We then inspect and repair the system.
Heating or cooling trouble in Historic Highlands?
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