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Find Insulation pros in El Cajon

Avatar for Ecotech Pro Inc
Ecotech Pro Inc
5.0(
17
)

Serving El Cajon, CA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"On initial inspection, they discovered that our old heat registers were the kind with asbestos (house built in the 60's), so they had to sub out the abatement part of the job. Once abatement was complete, the workers showed up each day at the time they said they would arrive. They were all friendly and professional. They kept everything clean. The took pictures in the attic to show me before, during, and after the work. They explained what they were doing and showed me the new ducting they were installing (quiet ducts) and explained the more "up-to-date" way of putting in the duct work than what we had. After the work was complete, we noted that the furnace ran much quieter (due to new ducting), and it ran WAY less often. The house stayed much warmer while running the furnace much less often. Best of all, our gas bill dropped! Now that we're moving into summer, the house seems to be staying cooler on these warm days. We don't have A/C so we're hoping the new insulation will keep the house cooler as the days continue to warm up. Very happy with the company and all the work they did. I would recommend them!"
Heating & A/C Project
Heating & A/C Project
Heating & A/C Project
New Attic blow-in insulation.
Heating and Air Conditioning Project

+55

Response time1 day
39 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Attic Shield
Attic Shield
4.9(
19
)

Serving El Cajon, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Small jobs welcome

"Explained what was needed to be done. Arrived on time. Fast and efficient. removed all old insulation in attic-, sanitized and installed new insulation."
Batts Insulation
Final Install
Final Installation
Air Sealing
Cleaning

+17

Response time8 hrs
Response rate89%
4 neighbors recently requested a quote
Avatar for Attic Professional
Attic Professional
5.0(
8
)

Serving El Cajon, CA and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

"Great quality work, paid attention to every detail; from laying down plastic to corner guards to cleaning up every last piece of insulation on the ground outside. The owner and his crew, who were his father and family friends were very professional and kind. The best owner and operator business that I would recommend to the next person in line."
Response time1 day
15 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for California Attic & Build Corp.
California Attic & Build Corp.
4.7(
14
)

Serving El Cajon, CA and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

"California Attic & Build was fantastic! The team was professional on time and left everything spotless. They explained the process clearly and showed before and after photos. My home already feels more comfortable. Highly recommended for insulation, cleanup, and rodent proofing!"
My jobs
My jobs
My jobs
My jobs
Response time1 day
Response rate94%
83 neighbors recently requested a quote
Avatar for Guardian Insulation, Inc.
Guardian Insulation, Inc.
4.7(
63
)

Serving El Cajon, CA and surrounding areas

In business since 2003

Free estimates

Credit card accepted

"Love this company! Only good things to say. Price was very competitive or better. Showed up on time. Took care of attic insulation and wall insulation. I am going to hire them again and happy to recommend to anyone."
Blown Cellulose
Installing Cellulsoe Insulation
Air Sealing Attic Penetrations
Exterior Wall Insulation
Exterior Wall Insulation Patching

+1

Response time1 day
Response rate93%
Recommended by96%of homeowners
Avatar for Attic Construction, Inc.
Attic Construction, Inc.
4.3(
82
)

Serving El Cajon, CA and surrounding areas

In business since 2013

Free estimates

Credit card accepted

"Tyler asked questions and listened to our answers to help us choose the insulation options that made sense for our home. The 3 workers prepared the area to protect our floors and doorways from any damage before they started work. Everyone was professional. Even though they put in a long day everything was cleaned up thoroughly before they left."
Before, Middle, After
Before
Removing Debris and Batt Insulation
During Vacuuming
During Vacuuming

+9

Response time4 hrs
Response rate85%
Recommended by90%of homeowners
Avatar for ASI Plumbing, Heating & Air
ASI Plumbing, Heating & Air
4.6(
989
)

Serving El Cajon, CA and surrounding areas

In business since 1952

Free estimates

Emergency services offered

"After calling to request an energy audit and enhanced attic insulation, a representative came out to survey the site and prepare a proposal to replace heating ducts in the attic with R6 ducts, seal the attic from the house, and add 14? blown-in fiber insulation on top of the existing 8? of fiberglass insulation. 
Then a technician came out to do a safety inspection of the heating system, hot water system, fireplace, gas appliances, ventilation, ducting, etc. He completed a series of tests to measure how well the house was sealed before any work was done. He took pictures of everything.
Then a team came out and replaced the ducts, sealed the attic, built dams around the bathroom ventilation fan and the whole house fan, installed channels for the eave vents, and prepared to install new insulation. One of the techs accidentally miss-stepped and cracked the ceiling drywall (see: What surprises come up during the course of the work?), which prevented them from finishing the insulation install until after the ceiling was repaired, which they would do at no cost to me. 
A drywall tech came out to repair the ceiling and resurface the popcorn ceiling.
The install team came back out to complete the insulation install. They blew-in another 14 to 16 inches of fiber insulation on top of the ceiling joists pre-existing fiberglass insulation. They took pictures of everything.
The original technician returned to repeat the seal tests and take more photos. The test results, before and after, and all the photos would be submitted for a state energy efficiency program rebate.
I called about a month later to check on the status of the rebate, and was told that the state requested that the ventilation fan dam be upgraded. A technician returned to complete the upgrade and take additional photos to submit to the rebate program.
I received a $1300 rebate from a state energy efficiency program, reducing the cost to $700 to me."
Drain Clearing Special Only $57
At ASI, The White Glove Guys, we specialize in providing unmatched AC maintenance service. We have a dedicated team that provides prompt and professional AC Tune-ups, repairs, and other services. Our expertly trained AC technicians can improve the efficiency of your AC to ensure solid performance all year round.
ASI Heating is just a call away. We can ensure your air conditioner is up and running perfectly within no time. Call us if you find some performance issues with your AC unit.
Furnace Repair Solutions in San Diego, CA
At ASI Hastings, we place a lot of importance on customer satisfaction. We want to make sure your home or business remains warm and comfortable right through the winter season. If you are experiencing problems with your furnace, don’t hesitate to call us. Schedule an appointment now.
Schedule Your Air Conditioner Services Today!

Our certified White Glove technicians are trained in residential servicing, repairing, and installing of every type of air conditioner ever made!

Evenings and Weekends – Never an Extra Charge!

+7

Recommended by90%of homeowners
Avatar for Landmark Energy Upgrades
Landmark Energy Upgrades
4.8(
59
)

Serving El Cajon, CA and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"Since this remodeling was the first remodeling that we decided to do after a long time since we did our last remodeling that required to hire a contractor to do it. The kitchen that we wanted to remodel, need to includes the cabinets, floors, island, counter tops, hardware, paint and lighting. We also wanted to do as many energy efficient features that will help us reducing the bills during time. Our search was for high quality and low quality and reputable construction companies that can service my area. Landmark construction energy crew was the great find that I was able to talk to and hire. First off their service was top notch. They were very responsive from the first meeting we had, patiently and really wanted to know what I’m trying to do in the kitchen. They were in touch with me during the whole work and made sure to provide me with updates regard anything that was complete and what will be next. What I liked most was that they were extremely detail-oriented. I very much appreciated that, especially given the Major scope of my project and plans. The end results were more than I expected. All the low voltage lightings, the special insulation that they used, the extra protection that they installed in the window that I have in the kitchen and more… All of this features improved the energy protection at the kitchen. They followed up with me the following day after all the final documents were signed off by me about the work in order to make sure that I was happy with the final results. I'm happy to mention that kitchen remodeling project was completed a little bit before the due date."
Cool Roof Install
Energy Upgrade
HVAC Air Duct
Home Energy Audit
Energy Upgrade Contractors

+6

Recommended by98%of homeowners
Showing 1-10 of 39

FAQs for insulation service projects in El Cajon, CA

Old insulation should be removed when it shows damage, contamination, or heavy deterioration. If you notice water stains, rodent droppings, mold, or large gaps, plan on taking it out to protect your home’s energy performance and indoor air quality. Removing compromised material eliminates health hazards, cuts energy loss, and sets the stage for a safer, more efficient attic—all while keeping utility bills in check.

R-value measures how well insulation resists heat flow—the higher the number, the better it slows heat transfer. The right R-value keeps your home warmer in winter and cooler in summer, saving energy year-round. Match the rating to your climate zone and have a pro verify performance over time, because moisture or settling can lower R-value and cut efficiency.

Attic insulation can stay in place for 80 to 100 years, but its performance often drops after the first 15. As dust, moisture, or mold build up, the material loses R-value and allows heat to escape. Schedule periodic inspections so a pro can tell you when replacement makes sense—helping you keep energy bills down and indoor comfort up.

You can over-insulate an attic. Beyond the recommended R-value, extra layers don’t add efficiency and can trap moisture, leading to mold or reduced performance. A local insulation pro can measure current levels, confirm the right target for your climate, and advise on any adjustments so you avoid future energy or maintenance headaches.

Insulation can be damaged by mold, pests, water leaks, or accidental electrical contact. When the material is compromised, it loses R-value and can introduce health hazards. Removing and replacing affected sections restores efficiency, while routine inspections from a qualified pro help you catch problems early and keep your attic safe and energy-smart.

The El Cajon, CA homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.

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