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Find Furnace / forced air heating system install or replace pros in San Marcos

Avatar for All Day Heating And Air Conditioning
All Day Heating And Air Conditioning
5.0(
16
)

Serving San Marcos, CA and surrounding areas

Approved

In business since 2010

Credit card accepted

Customers say: True professional

"Josh Medina was very professional in his assessment of my job, was prompt in providing a quotation, and did the installation in less than a day. The price not only was less than four competitors, but also included an upgrade to a two-stage system. I could not be more pleased with the entire job, start to finish. These guys know what they are doing."
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+14

Response time4 hrs
Recommended by100%of homeowners
Avatar for Liberty Plumbing Heating Air Conditioning Inc
Liberty Plumbing Heating Air Conditioning Inc
4.9(
208
)

Serving San Marcos, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Received estimate from Kade via email. He said that if I had any questions to call. Estimate was for $6056 with new furnace. I called office on 07/26/2019 (same day as original estimate) to see how much to replace 2nd unit and was told it was late in the day but someone would call back on Monday. I responded to email to make sure there was a record of my request since companies tend to get busy. On Monday I called again and was told that Kade wasn't in the office but the office person said that she thought someone was working on the price. She said I would get a call back. A week later, no call. I guess they don't need my $12,000. Estimate order number: 001085-1. They need to change their above description: Our mission is to provide the highest quality of service to all our customers."
Response time8 hrs
Response rate98%
20 neighbors recently requested a quote
Avatar for Cool Air Technologies Inc
Cool Air Technologies Inc
4.9(
493
)

Serving San Marcos, CA and surrounding areas

Approved

In business since 1996

Free estimates

Warranties offered

"Perfectly! Bill and his associate arrived when they said they would, diagnosed the problem, left to pick up the required part, and returned with the part and installed it, all without a hitch. I particularly liked the way Bill checked to be sure all the functions of the furnace and air conditioner were working before he finished. This is a top-notch service company!"
Additional Photos
Response time2 days
9 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Heating and Air 365
Heating and Air 365
5.0(
21
)

Serving San Marcos, CA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"My ac, heater, and thermostat all went out at the same time. I called an hvac company and they said I needed a new furnace and ac and it'd be $12k. I called Heating and Air 365 to try to get a cheaper quote on a new system. Tommy came out and said the system was fine. It just had a short in the thermostat wires by the ac, my dog must have chewed through them. He replaced the wires and fixed something in the furnace and everything is working great. He saved me thousands. It's refreshing to see some honesty out there. He's got my business for life."
New HVAC system!
New HVAC system!
Old vs New coil
Big Bear Mini Split
Mercury Thermostat

+9

Response time1 day
6 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Oasis Plumbing, Heating & Air Conditioning
Oasis Plumbing, Heating & Air Conditioning
5.0(
13
)

Serving San Marcos, CA and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

"Michael, James, Keith were all GREAT! I received about 5 estimates for replacing an original 32 year old split level Rheem system. Oasis was neither the least expensive but certainly not the most expensive. They have only been in business a short while but I took a chance with them and they delivered! Prompt, flexible pricing, clean work, friendly. A complete system including duct work and I hardly even knew they were here working. I whole heartedly recommend these guys! (And I do not write reviews!)"
AC Condenser
New Home Furnace
AC Replacement
AC Installation
Furnace Installation

+6

Response time7 hrs
Response rate96%
11 neighbors recently requested a quote
Avatar for AireCare Heating and Air
AireCare Heating and Air
5.0(
39
)

Serving San Marcos, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"I'd like to take a moment to share with you my experience with Air Care Heating and Cooling who recently installed a new heating furnace replacing our original heater from 1976. After interviewing four reputable local companies in San Diego I chose aircraft based on excellent reviews on Google and Angie's list. Mr Michael Santana (Owner and founder) offered very affordable pricing compared to others not forsaking the quality of/ furnace unit, warranty and exemplary customer care /service. The installation process was flawless. Mr Santana's and staff demonstrated outstanding professional performance, effective communication to answer questions and concerns even adding extras like replacing events and the job completion in a timely manner making the whole process from beginning to end a truly"
San Marcos Full System
San Marcos Full System
San Marcos Full System
San Marcos Full System
San Marcos Full System

+8

Response time6 hrs
Response rate91%
15 neighbors recently requested a quote
Avatar for Airtime Plumbing Heating & Air
Airtime Plumbing Heating & Air
4.8(
28
)

Serving San Marcos, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Emergency services offered

"⭐⭐⭐⭐⭐ Exceptional Service from Airtime Plumbing, Heating, & Air! I cannot recommend Airtime Plumbing, Heating, & Air highly enough! From the initial service call to the completion of the job, my experience was absolutely five-star. We had an urgent issue with our furnace acting up just as the cold weather hit, and they responded with incredible speed and professionalism. The technician David arrived promptly, was extremely courteous, and clearly explained what was wrong with our unit. He didn't just fix the problem; he took the time to show me what maintenance steps I could take to keep the system running efficiently. What Made Them Stand Out: Punctuality & Communication: They called ahead, arrived exactly when they said they would, and kept me informed throughout the process. Expert Knowledge: The diagnosis was fast and accurate. They fixed the problem right the first time. Fair Pricing: The final cost was competitive and exactly what was quoted, with no hidden fees or upselling. Cle"
tankless water heater
Chacon house
Chacon house
Chacon house
Additional Photos

+55

Response time9 hrs
Response rate100%
110 neighbors recently requested a quote
Avatar for Personal Plumbing, Heating & Cooling
Personal Plumbing, Heating & Cooling
4.5(
354
)

Serving San Marcos, CA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Christian installed a new thermostat and he was incredibly professional knowledgeable and nice I would Recommend Excel to To anyone looking for heating and air and I don’t usually write reviews but these guys were great!"
Mini Split System Install Oceanside
Additional Photos
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+12

Response time1 day
Response rate96%
22 neighbors recently requested a quote
Avatar for Same Day Heating & Air Conditioning, LLC
Same Day Heating & Air Conditioning, LLC
4.5(
47
)

Serving San Marcos, CA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"We recently had Same Day Heating and Air Conditioning come to our house to inspect our furnaces before turning the furnaces on during the cooler winter months and they discovered that both units had gas leaks. The system is 20 years old so it wasnâ t a complete surprise although we had hoped to put off replacing them for about 1-2 years. The technician/ inspector was knowledgeable, thorough and professional in showing us pictures of the worn, damaged furnaces (2). He explained the options for repairs and replacement as well as pricing considerations. In the end we decided to have them install 2 new furnaces and 2 new heat pumps to replace our old AC units. The installation was scheduled and completed within a short time frame and done with as little disruption to our home and family as possible. Efficient and neat in their work, I can happily recommend Same Day Heating and AC. I am very reassured knowing that my furnaces and heat pumps can effectively and safely heat and cool our home for our family. Peace of mind is priceless when it comes to protecting your family."
Our First Christmas!
SAME DAY HVAC
Jim Minnocchi
Same Day Heating & AC
Same Day or... You Don't Pay!

+11

Response time9 hrs
Response rate94%
Recommended by92%of homeowners
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FAQs for furnace / forced air heating system install or replace projects in San Marcos, 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 San Marcos, 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.