Hermosa Beach Duct Sealing & Indoor Air Quality

Most South Bay ductwork is 40+ years old, undersized for modern systems, and held together by duct tape that gave up a decade ago. New AC into old ducts is throwing money at the wrong half of the system. Hermosa is constrained.

The Hermosa Beach-specific things I look for:

• Housing stock here is small lots, walkstreet homes, three-story rebuilds on standard 30-foot lots, plus older 1940s-1950s beach cottages still hanging on.
• Common duct work and air quality jobs in Hermosa Beach: ductless mini-split installs in tight-access older homes, salt-corroded coastal condensers, and dual-zone setups in walkstreet rebuilds.
• constant salt air, persistent humidity, and a 'just rinse everything more often than you'd think' rule of thumb for outdoor units.

The problems I usually find on Hermosa Beach duct work and air quality calls

• No filtration upgrade path. MERV-13 filters need a properly sized return and a media housing. Slapping one in a thin slot starves the blower.
• Tape-failure leaks. old cloth duct tape disintegrates in attic heat. Aeroseal or mastic is the fix, not new tape.
• Disconnected returns. I find at least one fully disconnected return register every month — the system has been pulling attic air for years.

The flow on a typical Hermosa Beach duct work and air quality call:

1. You text or call. I read it on my phone, between jobs.
2. I confirm a 2-hour arrival window in Hermosa Beach.
3. On-site, I diagnose the system and write a flat-rate quote — no work starts until you sign off.
4. I improve it, clean up like I wasn't there, and the warranty is in writing.

Pricing: $129 duct pressure test (waived if you proceed with sealing). 5-year warranty on Aeroseal sealing. Sealing: half-day to full-day. IAQ install: 2–4 hours.

Need duct work and air quality in Hermosa Beach today? Call (866) 982-3652 or use the form below — I usually reply inside 15 minutes.