Serving homes across San Diego County
Clear Sky Chimney & Air Duct logo

Chimney repair in El Cajon, CA. Built for the valley's extremes.

  • Repairs from crown to firebox
  • Written quote, then the work
  • Duct and dryer vent cleaning

El Cajon takes its name from the box-shaped valley around it, and that valley sees greater temperature extremes than coastal San Diego. Clear Sky Chimney & Air Duct repairs chimneys, fits caps and sweeps flues across the city, and cleans ducts and dryer vents too.

100% satisfaction guarantee5-star Yelp reviews5-star Google rating100% eco-friendly
Inspection firstWe look at the whole flue, duct or vent run before recommending work
Written estimatesThe price is on paper before anything starts
San Diego homesCoast, canyons and inland mesas

★★★★★Current offers

Save on chimney

Ask for one of these when you book; one per visit. See every current offer.

Offers apply to residential jobs, can't be combined and are confirmed in your written estimate before work starts.

El Cajon chimney help

Want an El Cajon chimney looked at?

The valley started as cattle pasture on Rancho El Cajón, then grew grapes, avocados and citrus before the city incorporated in 1912. Neighborhoods like Fletcher Hills, laid out by Ed Fletcher in 1927 and 1928, sit alongside Bostonia, the eastern Granite Hills streets and much newer housing, including on the old Frontier Town site.

With housing that varied, a quick guess isn't good enough. We open with a chimney inspection, go over what we find with you, and then quote masonry or flashing repair, a new cap, firebox and damper work or a sweep.

Ask for an estimate
Inspecting flashing at the base of a brick chimney
Connecting a vacuum hose to a wall return vent

Why El Cajon chooses us

No upsell, just the findings

If your flue is clean and the crown is sound, we'll say that and leave. When something does need work, you see it in photos, hear why it matters, and get the cost in writing before any work happens.

  • Whole-system check, not just the obvious part
  • Written estimate before work starts
  • Honest answer when nothing needs doing
  • Chimney, ducts and dryer vent in one trip

How a visit works

From request to clear flue, in three steps.

  1. 01

    Send a request

    Use the form and tell us what you've noticed: smoke, a smell, water stains, a dryer that runs long. Mention the age of the house if you know it.

  2. 02

    We inspect and explain

    The technician checks the chimney, ducts or vent run, shows you what was found and puts the recommended work and its price in writing.

  3. 03

    Work done, then tested

    Once you approve, we do the work and test it: a draw check on the fireplace, airflow at the registers, or the dryer flap opening on its own.

Valley-heat chimney repair

Heat-cracked crowns, tired flashing

El Cajon set a record high of 114°F in September 2020, and the valley swings further between hot and cool than the coast does. Repeated heating and cooling opens small cracks in crowns and mortar joints and loosens flashing sealant, and the winter rain then finds those openings.

A typical repair seals or recasts the crown, replaces failed flashing and adds a stainless cap so storms, nesting birds and blown leaves can't drop into the flue. If the leak has been running a while, we also check the damper and smoke chamber for rust and crumbling mortar.

See all services
Chimney with new flue tiles ready for a crown

Flue · Ducts · Dryer vent

Ducts and vents that keep up with summer

The valley gets drier the farther east you go, and long cooling seasons keep air moving through the ducts. If you see dust collecting at the registers or have just finished a remodel, a <a href="/air-duct-cleaning/">duct cleaning</a> may be worth it. We'll check before recommending one.

Dryer vents deserve the same attention. A clogged run makes the dryer work longer in a laundry room that's already warm, and lint is what catches fire. A yearly <a href="/dryer-vent-cleaning/">vent cleaning</a> keeps the path open.

  • Flue liner and smoke chamber
  • Damper, cap and crown
  • Dryer duct run and outside flap
  • Registers, returns and air handler
Request a visit
Vacuum hose connected to a floor register opening

El Cajon neighborhoods

Across the El Cajon valley.

We take jobs in Fletcher Hills, Bostonia, Granite Hills, Rancho San Diego and every street in between. Enter your neighborhood to check coverage.

10 listed service areas. marks a shop location. Call to confirm availability for your address.

Service area

Gallery

Chimney and air duct work

Gallery of work
Two masons troweling a new chimney crown
Crown rebuild
Newly poured concrete chimney crown
New concrete crown
Screened clay flue tiles on a chimney crown
Flue screens
Chimney sweep cleaning a brick fireplace flue
Firebox cleaning
Connecting a vacuum hose to a wall return vent
Air duct cleaning
Tuckpointing fresh mortar into brick joints
Tuckpointing
Finished fireplace in a living room
Wood-burning fireplace
Chimney with a stainless cap and screened flues
Stainless cap

FAQs

El Cajon chimney and vent FAQs

Short answers to what homeowners ask before booking.

Does El Cajon's summer heat really damage a chimney?

It adds up. The valley sees greater extremes than coastal San Diego, and those wide temperature swings work small cracks into crown mortar and flashing sealant. They're easy to miss until the winter rain leaks through, so late summer is a good time for a look.

My house is in Fletcher Hills. Anything special to check?

Fletcher Hills was first developed in 1927 and 1928, so some homes there have older masonry chimneys. On those we pay close attention to mortar joints, the crown and the condition of the flue liner. The area runs mostly in El Cajon and partly into La Mesa, and we cover both sides.

Do you work in Rancho San Diego and Granite Hills?

Yes. We cover El Cajon proper, Fletcher Hills, Bostonia, the Granite Hills area on the east side and Rancho San Diego. Much of Granite Hills is unincorporated county land with El Cajon addresses, and we serve that too.

Is a chimney cap worth adding?

Usually, if the flue has none. A cap keeps rain from falling straight down the flue, stops birds and animals from nesting, and its mesh screen holds sparks in. In a dry, inland area that last point matters. See chimney cap installation.

What are the signs my dryer vent needs cleaning?

Loads taking two cycles, a cabinet too warm to rest a hand on, a scorched odor near the laundry, or an exterior hood whose flap hardly lifts. Any of those means lint is restricting the run. We clean from the dryer to the exterior hood and check the flap works.

Fireplace smoking or dryer running hot?

Send a request and a technician will phone you to book a visit.

Call now Free quote