Spray Foam Insulation in Ontario, CA

Find top-rated spray foam contractors and save up to 27% on energy bills

Compare 10 verified spray foam insulation contractors serving Ontario, California, backed by 882 customer reviews averaging 4.2★. Whether you're insulating a new build, retrofitting an existing home, or upgrading attic and crawl-space insulation, these pre-screened Ontario contractors handle both open-cell and closed-cell spray foam. Homeowners here typically cut energy bills by around 27% — get free quotes and read verified reviews below.

💰 Estimated Energy Savings in Ontario

27%
Average Energy Savings
Typical range: 22% - 32%
$1,134
Estimated Annual Savings
Based on $350/month average energy cost
5 years
Average Payback Period
Return on investment timeline

Note: Actual savings vary based on home size, current insulation, energy rates, and climate conditions. These estimates are based on Department of Energy data for Hot-Dry.

Verified Contractors in Ontario

5⭐
77 Google reviews

Recent Reviews:

Ting Chorng★★★★★6 months ago

I had Ram Insulation help with my attached garage project. They showed up on time with three-man crew and completed my 20' by 20' garage insulation within a day. They have done very nice and detail-oriented work and my garage looks brand new and ready for the next step.

Alaine de Leon★★★★★3 months ago

Miguel and his team were referred to us by our HVAC vendor. We had them remove and replace the insulation in our home. Miguel, Adolfo and the crew were punctual and professional throughout the project. The entire project took 3 days and they did a great job of prepping our home, covering areas to protect and keep clean, removing the old insulation, and cleaning out any remaining debris before installing the new material. Adolfo took the time to explain what would happen during each part of the process including what things I can expect from having the work done. They were also good about the cleanup work when they finished. I already notice the difference in how much the new insulation is helping block out the heat inside my home. Hard working and dedicated crew. Would highly recommend using RAM for your home insulation needs.

LJ★★★★★4 months ago

Miguel’s team, Hector and Alfonso did an outstanding job of insulating our attic. They came bright and early and blew in insulation as well as laid rolls of insulation throughout our space. They were professional and courteous. They even had to deal with sharing space with a painting crew that was at our house to finish up a project. Super good folks and the insulation project was priced very competitively. Give Miguel a chance to bid for your business. You won’t regret it.

5⭐
6 Google reviews

Recent Reviews:

Fabian Todd★★★★★2 weeks ago

Choosing Simple Value was a smart, easy decision. We wanted to improve our home's efficiency without a major renovation or budget. They provided exactly that—a valuable upgrade done simply and professionally. The crew worked quickly, cleaned up all debris, and even gave us a few maintenance tips. Our energy bills have started to decrease, and the house feels cozier. It's the definition of a high-value, low-hassle home improvement.

Wilson Asa★★★★★2 weeks ago

I am so pleased with the simplicity and results. The entire experience with Simple Value Insulation was hassle-free. The quote was easy to understand with no hidden fees, scheduling was simple, and the crew that did the work was skilled and polite. They did a thorough job air sealing and insulating our attic. The improvement in our home's ability to maintain temperature is significant. Finally, a contractor that focuses on providing core value without any fluff.

Olivia Gelb★★★★★2 weeks ago

We hired Simple Value Insulation and the name couldn't be more accurate. The process was straightforward: a clear, no-pressure consultation, a fair and simple quote, and a professional installation. The crew was on time, worked efficiently, and left everything clean. They focused on doing the core job well—sealing our attic and adding quality insulation. Our home is noticeably more comfortable, and the value for the money is excellent. No complications, just great value.

4.8⭐
10 Google reviews

Recent Reviews:

Ruth Perez★★★★★3 years ago

Good company and great workmanship. My house had so many ongoing projects and I was looking for a good company to give me some peace of mind regarding my attic and air ducts. This home is very old and needed many updates, those were part of it. They removed all the debris and the old insulation, as well removed all the air ducts and installed new flexible r6. Air ducts were hanged with some strapping, their project manager said it allows better air flow to the house. The work they did was very clean and it seems as their workers are well trained.

4.8⭐
227 Google reviews

Recent Reviews:

Keren Gilboa★★★★★a year ago

I contacted attic cleaning contractors in my area and found Pure Eco. Great company to deal with. The attic cleaning and insulation job was completed in a timely fashion, their teams are professional and really know the job. I got several prices from other companies cause in Agura Hills we some other companies that does same job, but Pure eco were friendly, not pushy and honest. Not the cheapest, but we wanted to focus more on quality.

Alex Brewer★★★★★a year ago

I cannot say enough good things about this company. We’re new homeowners and they took the time to educate us and give us very fair quotes. They were prompt, honest and super thorough with their work. The owner was personally texting us updates and sending photos throughout the entire process. Would definitely recommend this place to anyone getting insulation or air duct replacement! Amazing value for sure!

Danil Petrov★★★★★2 years ago

My experience with Pure Eco was outstanding, I was able to get my attic done in 1 day of work with a quick, courteous, very professional crew by Armando. I didn’t replace my air ducts since I moved into my house 12 years ago, I lost air flow and the layout was horribly messy, they need to be changed , it was the original ducts system, I had noticeable temperature differences in most of the rooms around my house after we checked the attic we noticed that there is no insulation at all but roofing debris. I am very pleased with the ending results. Thank you Armando for making that happen!

4.8⭐
476 Google reviews

Recent Reviews:

Alex Pineda★★★★★a month ago

We’ve always had amazing experiences with Total Comfort, and yesterday was no exception! Their technician, Ricardo, came out and quickly resolved our heater issue. He was incredibly professional, super attentive, and just an all-around great guy. You can tell he genuinely cares about his work and making sure everything is perfect. Highly recommend Total Comfort—Amazing Customer Service!

Craig Rosner★★★★★a month ago

Total Comfort came to my house (via my new home build warranty). After explaining issue to the tech Ricardo, he quickly got up in the attic, diagnosed, fixed the problem and explained what he had to do. It seemed like only a few minutes and he was gone. I wouldn’t hesitate using Total Comfort again, even after warranty expires with builder . Thanks again to total comfort and my tech Ricardo.

L Ford★★★★★a month ago

Ricardo showed up to perform a warranty repair on the heater on my new home. He was able to identify and repair the issue on the spot, and corrected a wiring issue left by the contractor who performed the original install. He was efficient, professional, and skilled at his job.

4.6⭐
47 Google reviews

Recent Reviews:

Tommy Hubbs★★★★★6 months ago

There was some pretty severe wind damage to my Mother's mobile home roof in Hemet during the January wind storm. And the roof was getting old. So she needed it redone. Tip Top Roofing Inc came out and did a swell job. The roof looks great. They communicate well out of their office and we are pleased with their work. If you are looking for a good roofing contractor, Tip Top Roofing, Inc is it.

Hung Huynh★★★★★a month ago

Tip Top Roofing installed new roof on our house that had two layers of shingles. They pulled permit and scheduled inspection. Made one payment when job is completed. The yard is cleaned when they completed the job. Very satisfy with their work. Would use their service again if I have a need for roofing.

JCT Anderson★★★★★6 months ago

My roof was extremely damaged by the winds earlier this year. I contacted Tip Top Roofing Inc. for an inspection to find out whether patching the damage would be possible. After the inspection, their recommendations were to replace the roof due to the age of the shingles and the possibility of further damage with future windstorms. The price to replace the roof was absolutely AWESOME! The work performed was EXCEPTIONAL and the final roof is IMPECCABLE! Everyone I worked with throughout the process was wonderful. I highly recommend Tip Top Roofing Inc.

3.6⭐
33 Google reviews

Recent Reviews:

Manjit Shahi★★★★★2 years ago

My appointment was at 0530 hrs but they start taking delivery from 0700 hrs. Early morning company trucks start loading for their jobs. Direction: if you coming from Barstow, from H-15 take left on 147 exit (Bear Valley Road) and left on I Ave and right on Catalpa St. Customer is on left side. Sign board posted on the building BDI installed. Park your truck, go inside of the building and back in when alley is free. Can park on the road at night buy no washroom available.

Jennepher McFarland★★3 years ago

Delivered a load here. I had to wait 30 mins for them to get propane for the forklift because they weren’t prepared for the day. They don’t have a dock. So took another 2 hours to unload my dry van. Nice people but not the best setup.

Richard Gee★a year ago

Be carefull when it comes to Roofdeck. There contract says Rood deck, but in reality they mean roofdeck only above living space, not the whole roof.

Recent Reviews:

javier buenrostro★★★★★2 years ago

Andrew De La Torre★4 years ago

2.3⭐
4 Google reviews

Recent Reviews:

Ray Castillo★★★★★8 years ago

Got what u need

北京遇到洛杉矶Beijing Meet LA★★a year ago

The site is okay, but one side is completely filled with shipping containers. Therefore, parking is very difficult and space is extremely limited. The staff are nice.

ALAN SANCHEZ★7 months ago

Frequently Asked Questions — Spray Foam Insulation in Ontario

These are the questions Ontario homeowners ask most about spray foam cost, R-value, and open- vs. closed-cell foam — with context for local pricing and roughly 27% typical energy savings. Compare the 10 verified Ontario contractors above for exact quotes.

Does spray foam insulation work well in hot dry climates like Ontario?▼
Yes — spray foam is highly effective in hot dry climates like Ontario, CA. While moisture control is less of a concern than in humid climates, the air sealing properties are critical for keeping hot desert air out and cooled air in. In extreme heat climates, an unsealed attic can reach 150°F+, dramatically increasing AC load. Spray foam in the attic can reduce attic temperatures by 30–40°F.
What is the best area of my home to insulate in Ontario?▼
In hot dry climates like Ontario, CA, the attic is typically the highest-impact area to spray foam insulate. Desert sun heats roofs to extreme temperatures, and an uninsulated attic transfers that heat directly into your living space. After the attic, crawl spaces and rim joists are the next highest-impact areas. A local contractor can perform an energy audit to identify where your home loses the most conditioned air.
Is spray foam insulation worth the cost?▼
For most homeowners, yes. Spray foam creates an air-tight seal that traditional insulation cannot match, reducing energy bills by 15–35% annually. It also adds structural rigidity, acts as a moisture and vapor barrier, reduces outside noise, and can increase home resale value. The higher upfront cost compared to fiberglass is typically recovered within 3–7 years. One important note: because spray foam creates a very tight building envelope, proper mechanical ventilation is important to maintain healthy indoor air quality and prevent interior moisture buildup. This is typically handled by an Energy Recovery Ventilator (ERV) — a system that brings fresh outside air in while pushing stale air out, recovering the energy from the outgoing air so you don't waste what you paid to heat or cool — or a Heat Recovery Ventilator (HRV), which works similarly but is optimized for cold climates. A qualified contractor will assess whether your home needs ventilation upgrades as part of the installation.
How much does spray foam insulation cost in Ontario, CA?▼
In Ontario, CA and the surrounding area, spray foam insulation typically costs $1.00–$3.00 per square foot installed, depending on the type and your home's specifics. Open-cell foam runs $0.44–$0.65 per board foot, while closed-cell foam costs $1.00–$2.00 per board foot. A typical 2,000 sq ft home attic in Ontario costs $2,000–$6,000. Most Ontario homeowners recoup this investment within 3–7 years through energy savings of 15–35% annually.
What is the difference between open-cell and closed-cell spray foam?▼
Open-cell spray foam is softer, less dense, and less expensive. It expands significantly and is ideal for interior walls, attics, and soundproofing. Closed-cell spray foam is denser, stronger, and provides a moisture barrier — making it better for exterior applications, crawl spaces, and areas prone to flooding or humidity. Closed-cell also has a higher R-value per inch (R-6 to R-7 vs R-3.5 to R-4 for open-cell). One key difference: open-cell foam allows some vapor movement, while closed-cell acts as a vapor barrier — an important consideration for your home's ventilation needs.
How long does spray foam insulation last?▼
Spray foam insulation is one of the most durable insulation options available, with a lifespan of 80+ years when properly installed. Unlike fiberglass batting which can sag and settle over time, spray foam maintains its shape and insulating properties indefinitely. It will typically outlast the building it is installed in.
How do I find a qualified spray foam insulation contractor in Ontario, CA?▼
When searching for a spray foam contractor in Ontario, CA, look for ones who are licensed, insured, and have verifiable reviews. Spray foam requires specialized equipment and training — improper installation can cause off-gassing, adhesion failure, or fire hazards. Ask for references, verify their insurance, and get at least 2–3 quotes. A qualified Ontario contractor will also assess your home's ventilation needs — a tightly sealed spray foam installation requires adequate mechanical ventilation to prevent moisture and indoor air quality issues. FoamMatch pre-screens all listed contractors in Ontario for licensing and insurance so you can compare verified professionals in your area.
How long does spray foam installation take?▼
Most residential spray foam jobs take 1–2 days depending on the size of the area. A standard attic takes 4–8 hours. After spraying, the foam cures within 24 hours, though most contractors recommend waiting 24–72 hours before occupying the space due to off-gassing during the curing process.
Does spray foam insulation need to be replaced?▼
No — spray foam insulation does not need to be replaced under normal circumstances. Unlike fiberglass insulation which degrades over time, spray foam maintains its R-value and air sealing properties for the life of the building. The only reasons to remove or replace spray foam are water damage, renovation work, or improper original installation.