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Top-Rated Furnace / forced air heating system install or replace pros in San Luis Obispo - Updated Nov 2026

John Dittenhoefer
4.9(
72
)
Gas Furnace / Forced Air Heating System - InstallDuctless Mini-split Heating System - Install or ReplaceDucts & Vents - Install or Replace+12 more

Serving San Luis Obispo, CA and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"John and Chelsea responded quickly to my request for repair on my furnace. The heating company that installed the new furnace couldn't figure out why it wasn't working. Dittenhoefer found the problem right away and fixed it. Great service. Would definitely use them again."
Response time2 days
Response rate90%
1 neighbors recently requested a quote
Avatar for Premier Heating and Air LLC
Premier Heating and Air LLC
5.0(
16
)
Heat Pump - Install or ReplaceDucts & Vents - Install or ReplaceElectric Furnace / Forced Air Heating System - Install+12 more

Serving San Luis Obispo, CA and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

"We chose to go with Premier for our new home HVAC system because of Jonathanâ s professionalism and great price. We felt like Jonathan treated us like family. He was honest and upfront about the challenges he would face putting our new system in so we were never surprised or felt like we were getting ripped off. We really appreciate how the Premier team was respectful of our home , nice to our dogs and finished in the time frame agreed upon. Our system works wonderfully , we highly recommend Premier for any of your HVAC projects!!!"
Response time1 day
5 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Bee Right There Heating & Air
Bee Right There Heating & Air
5.0(
9
)
Ductless Mini-split Heating System - Install or ReplaceDucts & Vents - Install or ReplaceElectric Furnace / Forced Air Heating System - Install+6 more

Serving San Luis Obispo, CA and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"Shawn was very professional. I was expecting a quick in-and-out service but he spent a lot of time making sure everything was ok. He found a Carbon Monoxide leak in the system, I was there the whole time and he showed me everything he was doing. We are grateful for his professionalism and hard work. I totally recommend this business, and Shawn especially. Great job and thank you Shawn"
18 Seer Inverter Heat Pump Retrofit
Upflow Furnace & A/c Split System in Garage
Additional Photos
New Split system A/C
Mitsubishi Hyper Heat Heat Pump For Cold Climate

+8

Response time1 day
Response rate100%
Recommended by33%of homeowners
Avatar for Paso Robles Plumbing Heating and Air
Paso Robles Plumbing Heating and Air
4.4(
8
)
Ductless Mini-split Heating System - Install or ReplaceElectric Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install - For Business+4 more

Serving San Luis Obispo, CA and surrounding areas

Approved

In business since 1992

Free estimates

Emergency services offered

Plumbing, heating, and cooling isn?t solely our job, it?s our passion. We strive to provide you with the top plumbing and HVAC service in Paso Robles. No matter the size of the problem or time of day, you can trust us to get the job done right. After all, Paso Robles Plumbing, Heating, and Air has been servicing the community since 1983, bringing comfort to our customers right when they need it.

HVAC Service
Overheated on Wall furnace
$50 Off Any Service or Repair
10% Off Central Furnace or AC Installation
Water Heater

+5

Response time1 day
Recommended by16%of homeowners
D&K Mechanical
5.0(
1
)
Ducts & Vents - Install or ReplaceElectric Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install - For Business+16 more

Serving San Luis Obispo, CA and surrounding areas

Approved

In business since 2023

Credit card accepted

Offers commercial services

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Interior of Residential unit
Exterior of Residential Unit
Neat Wiring
Neat Wiring/Connection 2
Tidy Wiring and Pipe Design

+15

Response time11 hrs
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FAQs for furnace / forced air heating system install or replace projects in San Luis Obispo, 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 Luis Obispo, 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.