HVAC maintenance in La Crescenta-Montrose

About HVAC maintenance in La Crescenta-Montrose

Short answer

An AC or furnace tune-up in La Crescenta-Montrose is $129, or $15 a month on a plan with two visits a year. Book the cooling visit before the first 90°F day, which near La Crescenta-Montrose typically comes around March 26.

What we see in La Crescenta-Montrose homes

Maintenance in La Crescenta and Montrose has to cover two real seasons. The fall visit matters most here, because furnaces and heat pumps run every cold night. We test furnace combustion, check the heat exchanger and flue, and measure carbon monoxide at the registers. Heat pumps get a defrost cycle test and a check of the reversing valve.

The spring visit deals with what winter and fire season left behind. Outdoor units near the foothills fill with needles, leaves and ash, so we clear the base pan and clean the coil. Filters load fast during smoke events, and we check whether your system can handle a thicker MERV 13 filter. Crawl-space ducts are inspected for disconnected sections and rodent damage. Drains that dried out over winter get flushed before the first hot day. After a major fire nearby, we suggest an extra filter change and a coil check. Every visit includes photos of the equipment. Plan members get priority scheduling when a heat wave or a cold snap hits.

Crawl-space furnaces in older homes need clear access and dry conditions, so we check for moisture and blocked vents. Floor furnaces and wall heaters get a burner and vent check each fall. Homes near the forest edge may need the outdoor coil cleaned twice in a heavy fire year. Filters in those homes should be checked monthly during smoke events. We leave spare filters of the right size if you want them.

A La Crescenta and Montrose maintenance calendar

• September or October: heating visit first, since furnaces and heat pumps run every cold night.
• March or April: cooling tune-up, after the wet season and before the first heat.
• After any fire in the San Gabriels: clear ash from the coil and replace the filter.
• Mid-winter: a filter change, since heating runs long hours here.
• Every one to three months: a new filter, monthly during smoke events.

What we check on homes in the Crescenta Valley

• Crawl-space furnaces for moisture, blocked vents and clear access.
• Floor furnaces and wall heaters for burner and vent condition.
• Heat pump defrost cycles after cold mornings.
• Condensers near the forest edge for needles, leaves and ash.
• Filter racks that can take a thicker MERV 13 filter.

Book sooner if

The heat runs constantly on cold nights and the house still feels cold. A heat pump's outdoor unit stays iced over for hours. A floor furnace or wall heater smells unusual when it starts. Smoke smell inside lingers after the outdoor air clears.

La Crescenta and Montrose homes need their heating checked as carefully as their cooling. Winter nights here run colder than in the valley, so furnaces and heat pumps work hard for months. The fall visit checks burners, igniters, flame sensors and carbon monoxide. For heat pumps, we test defrost and heat-mode performance.

Foothill lots collect leaves, needles and ash in outdoor units. The spring visit clears that debris and inspects the fan motor and coil for rust. After a fire season, we also check filters and return ducts for ash buildup.

Many homes here have older ductwork, often uninsulated. Maintenance includes a look at duct connections we can reach, and we note leaks that waste heat in winter and cooling in summer.

The NOAA weather station 7 miles from La Crescenta-Montrose, Burbank Valley Pump Plant, averaged 24 days a year at 95°F or hotter and 6 days at 100°F or hotter in 2016-2025. Its hottest reading was 114°F on September 5, 2020.

At Burbank Valley Pump Plant, the first 90°F day of the year typically arrives around March 26. Book the spring cooling tune-up a few weeks before that, so weak parts are replaced before the system has to work hard.

The same station recorded about 44 nights a year at 40°F or colder, with winter lows averaging 42.5°F. That is cold enough that the furnace runs every night in winter, so the fall heating visit, with its combustion and carbon monoxide check, matters as much as the spring one.

In La Crescenta-Montrose (ZIP codes 91214 and 91020), 54% of homes were built before 1960 and 79% before 1980; 80% of households heat with natural gas, and 68% of homes are detached single-family houses.