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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
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+43 more

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."
Additional Photos
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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(
209
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+43 more

Serving San Marcos, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Service man arrived as expected and performed the annual maintenance of the air conditioning system. The work was thorough and it was something that was familiar to me as I used to do in my younger years. With heavy use of airconditioning in the summer in CA, this is important and something we do every year.
"
Response time8 hrs
Response rate100%
19 neighbors recently requested a quote
Avatar for Heating and Air 365
Heating and Air 365
5.0(
21
)
Gas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - RepairGas Furnace / Forced Air Heating System - Repair+2 more

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
Response rate86%
4 neighbors recently requested a quote
Avatar for Personal Plumbing, Heating & Cooling
Personal Plumbing, Heating & Cooling
4.5(
361
)
Gas Furnace / Forced Air Heating System - InstallDucts & Vents - Install or ReplaceElectric Furnace / Forced Air Heating System - Install+10 more

Serving San Marcos, CA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"I talked to the owner (Howard) and told him our old heater had failed and my wife was catching a cold., We worked out the details on Thursday, and on Friday Night the system was totally installed and operating. The tech they sent out was excellent, worked until he had everything working correctly, I can't thank him enough for his good work and professionalism and working with my concerns. Great Job Guys!!"
Mini Split System Install Oceanside
Additional Photos
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Additional Photos

+12

Response time1 day
Response rate100%
23 neighbors recently requested a quote
R & C Heating & Air, Inc.
4.7(
69
)
Ducts & Vents - Install or ReplaceElectric Furnace / Forced Air Heating System - RepairElectric Furnace / Forced Air Heating System - Repair - For Business+6 more

Serving San Marcos, CA and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"I emailed HomeAdvisor for a AC repair at about 11pm last night. In the morning I had 3 companies sent to me by HA. I read the reviews and emailed 2. They both got back to me right away, one couldnâ t get to me until next Tuesday, the other called me at 7:45am and asked me what type of problem we were experiencing and that they could be at the house between 8:30-9:30am...that same morning! We said come on down and they were there at about 8:45, completed the repair and checked the system and gone in an hour. The cost was very reasonable. We would hire them again! Thanks Tom!"
 Fujitsu Mini Splits
3-5 Ton Heatpumps
Carrier Slimline A/C
First Co. Coil
Tankless Water Heater

+12

2 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for JMS West HVAC
JMS West HVAC
4.6(
193
)
Heat Pump - Repair or ServiceGas Furnace / Forced Air Heating System - Repair

Serving San Marcos, CA and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"The serviceman with Jim's mechanical repair was on time incredibly knowledgeable and very professional. He performed the service quick and efficient. No pressure sales or unneeded misc.service. He diagnosed and fixed the issue like a pro. I won't call anyone else other than Jim's for my future furnace replacement. I would recommend them to anyone .Herb W."
Naranja
Naranja
Naranja
Naranja
Naranja

+2

Response time12 hrs
6 neighbors recently requested a quote
Recommended by93%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.