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Find Furnace / forced air heating system install or replace pros in Lake Forest

Avatar for Global Green Solutions
Global Green Solutions
5.0(
248
)

Serving Lake Forest, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"The new heating system was installed perfectly and works wonderfully. They were careful, neat, and professional. Definitely recommend their service. The whole process was smooth and stress-free."
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+24

Response time3 days
11 neighbors recently requested a quote
Recommended by7%of homeowners
Avatar for Trinity Heating and AC
Trinity Heating and AC
5.0(
39
)

Serving Lake Forest, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Warranties offered

"Great experience! I hired Trinity to come out and Tune up and clean my Grandmotherâ s furnace. They were a pleasure to work withâ ¦ very courteous and professional! Extremely clean and friendly! I ended up hiring them to install my Central heating and AC at my home! I couldnâ t be happier!"
Furnace Before
AC After
Furnace After
AC Before
Before - Furnace

+83

Response time3 hrs
Response rate98%
48 neighbors recently requested a quote
Avatar for Ionel Firuta
Ionel Firuta
5.0(
30
)

Serving Lake Forest, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Emergency services offered

"My furnace was really old and it broke down. Ione gave me a great price and he replaced my furnace that same day. I will recommend him to all my friends and family."
Heating & A/C Project
Heating & A/C Project
Heating & A/C Project
Heating and Air Conditioning Project
Heating and Air Conditioning Project

+19

Response time10 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for Total Home Environmental HVAC Co.
Total Home Environmental HVAC Co.
4.7(
98
)

Serving Lake Forest, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"Total Home Environmental HVAC repaired my 1994 furnace. Although the furnace was not technically supported by the manufacturer, the service technician researched the unit on-line, sourced the parts and repaired the unit as promised. I am very pleased with the results and also with the lifetime warranty."
Technician at Service Residence
Installing UV Sterilization Light
Installing UV Bulb to fight Covid
Removing tools from stocked truck
Stocked Repair Trucks

+17

Response time3 hrs
Response rate98%
87 neighbors recently requested a quote
Avatar for Service All Stars Heating and Air Comfort
Service All Stars Heating and Air Comfort
4.4(
139
)

Serving Lake Forest, CA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"I thought this company did a good job. They put in the furnace and it seems to work. The problem is they never got a permit for the work. Then they never got the inspection from the city. Both the permit and the inspection were part of the contract. I do not know anything about furnaces or furnace installation. Without the inspection, I do not know if the furnace was installed correctly. Is it sending carbon monoxide into our house? I must have called them 100 times in the last year to get the permit and inspection. they simply refuse. I have sent a complaint to the contractor state license board, I do not recommend this contractor."
Ductless Systems
Teamwork!
Delivery Truck
Job Done!
Another One!

+2

Response time1 day
Response rate96%
12 neighbors recently requested a quote
Avatar for Personal Plumbing, Heating & Cooling
Personal Plumbing, Heating & Cooling
4.5(
354
)

Serving Lake Forest, CA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Unfortunately, I needed an HVAC company to fix my AC during a heat wave. Most companies were 5+ days out before they could even diagnose our problem. Called 3 highly visible companies, from their marketing, who said they wouldn't even work on our unit. I went with a referral from a neighbor, mistake. This company took a week to get to us then the tech went MIA for 5 days with no contact when he said he would be back tomorrow with parts. Won't mention their name as there could have been multiple uncontrollable reasons why. I then did a lot of research on different companies across multiple review websites (including Angies) and Excel Air stood out. Once I spoke to the office staff, great experience, they had a tech out to our home in 2 days with our problem diagnosed. Our tech's name was Lucas who was efficient with his time, talked me through what was going on and gave us our estimate which we were happy to move forward with. Lucas fixed our problem in under 20 minutes. Me being me, I watched each step and saw the quality work. He even put in a fuse to ensure the same problem didn't happen again to our transformer. Once he fixed everything and got our new thermostat power, our AC has been working perfectly ever since. I'm now a really big supporter of Excel Air. Their office staff worked with our insurance company after hours and actually updated us (what company does this these days) the entire way. I can't tell you how impressed I was from their office, Lucas and most of all their successful resolution of our problems with our AC. Thank you Excel Air!"
Mini Split System Install Oceanside
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+12

Response time1 day
Response rate96%
23 neighbors recently requested a quote
Avatar for One Hour Heating and Air Conditioning of Mission Viejo
One Hour Heating and Air Conditioning of Mission Viejo
5.0(
10
)

Serving Lake Forest, CA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

Here at One Hour Heating & Air Conditioning of Mission Viejo, When homeowners want a reliable air conditioning and heating system that they don’t have to think about, they call One Hour Heating & Air Conditioning. We are the leading HVAC service provider in the Mission Viejo and the surrounding areas for a simple reason: we actually care about your comfort.\n\nAt One Hour Heating & Air Conditioning® of Mission Viejo, we respect you, we respect your time, and, most importantly, we respect the trust that you put in us to keep your home comfortable. It’s why we back all of our work with a 100% customer satisfaction guarantee for two years, and it’s why we’re always on time—guaranteed.\n\nOur customers love what we do because we treat them like the neighbors they are to us. We back our work with a 100% satisfaction guarantee, provide StraightForwardPricing® guides for your benefit, and will pay you back for being even one minute late to an appointment.\n

Response time1 day
4 neighbors recently requested a quote
Avatar for Cool Air For you
Cool Air For you
4.0(
16
)

Serving Lake Forest, CA and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"My AC's secondary drain was leaking due to a clogged primary line. Daryle from Cool Air quickly identified the issue and cleared the clog under the master bathroom sink — about a gallon of water came out instantly. The final charge was a bit more than quoted, but Daryle was honest, efficient, and didn’t try to upsell anything. After bad experiences with Service Champions — who I believe sabotaged my system — working with Cool Air was a relief. Vadim, the owner, was also great to talk to. I’ll be using them again."
Additional Photos
Response time1 day
18 neighbors recently requested a quote
Recommended by85%of homeowners
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Showing 1-10 of 543

FAQs for furnace / forced air heating system install or replace projects in Lake Forest, CA

Converting from an oil furnace to an electric furnace isn't a simple swap—the oil system needs to be completely removed before installing the electric furnace. You'll need a full electric system installation, but you might be able to reuse existing ductwork if it's up to current safety standards. You’ll need to budget for a new electric furnace installation, which costs between $1,800 and $6,200, including professional removal, proper disposal, and safe installation of the new system.

Electric furnaces are 100% efficient at converting electricity into heat. However, some of that heat can be lost as it travels through your home's ductwork or escapes through poorly insulated areas. That's why regular duct maintenance and proper home insulation are important to maximize your furnace's efficiency and reduce heat loss, ensuring consistent warmth and lower energy costs.

With proper maintenance, an electric furnace can last anywhere from 20 to 30 years, outlasting the average gas furnace's lifespan of 15 to 20 years. To keep your electric furnace running efficiently, schedule regular cleanings, tighten connections, and have inspections done before winter arrives. With routine maintenance, you’ll ensure consistent, safe heating for years to come.

The size of the electric furnace you need depends on factors like your home's square footage, climate, and insulation quality. As a general guideline, those who live in warmer climates should multiply their square footage by 30 to 35 BTUs, while those in cooler areas should multiply it by 50 to 60 BTUs.

Consulting with an HVAC professional can help you determine the exact size that's right for your home.

An electric furnace works by converting electricity into heat using high-resistance heating elements. A blower then pushes the warm air through your home's ductwork, distributing heat evenly throughout your space. Since there's no combustion involved, electric furnaces eliminate the risks associated with gas furnaces and provide consistent, reliable heating when properly installed.

An electric furnace uses between 40 and 80 kilowatts per day to heat your home. The exact amount it uses depends on factors like your home's size, insulation, and overall energy requirements. Larger homes or those with poor insulation use more energy than smaller, well-insulated spaces. A professional furnace assessment can help confirm the ideal unit size for your needs.

The Lake Forest, CA homeowners’ guide to furnace / forced air heating system installs or replaces

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