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

Avatar for Enviro Heating & Air Conditioning Inc.
Enviro Heating & Air Conditioning Inc.
4.5(
45
)
Gas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - InstallHeat Pump - Install or Replace

Serving Napa, CA and surrounding areas

Approved

In business since 2008

Emergency services offered

Warranties offered

Enviro Heating & Air Conditioning Inc. is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business. \n

31 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Best Chance Heating and Cooling
Best Chance Heating and Cooling
5.0(
48
)
Gas Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - RepairHeat Pump - Install or Replace+7 more

Serving Napa, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Credit card accepted

"I thought my furnace went out so I called chance because he was recommended by a fellow (church Member). He came out the same day and diagnosed the problem as a faulty thermostat. He installed a new one and now my furnace works! He was very knowledgeable and thorough in explaining the issues and I’m very grateful for his help. I will definitely hire him again."
Mitsubishi air handler
Air handlers
Attic install
Old furnace
New furnace

+20

Response time8 hrs
26 neighbors recently requested a quote
Recommended by65%of homeowners
Avatar for Lee's Air, Plumbing & Heating
Lee's Air, Plumbing & Heating
4.5(
114
)
Gas Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+43 more

Serving Napa, CA and surrounding areas

Approved

In business since 1981

Emergency services offered

Warranties offered

"I understood a $49 charge would be for the initial call and any services needed would be a CO$T minus the $49... if agreed to have worked done. I did not know? and the service person explained, that the company had a FLAT RATE? for any clogged plumbing?? I DIDN'T really have a choice... the service person was already onsite, the situation needed to be resolved... I proceeded to have the work done. This repair, minus the $49, still CO$T me $236.02.. BIG ONES. I am still angry and confused.. I know my outcome would be different if I KNEW about the FLAT RATE.... be aware !!!"
New AC & Heating Install
New AC & Heating Install
New AC & Heating Install
Our HVAC pro performing an ac and heating repair
Angi 2021 Super Service Award

+36

Response time40 mins
Response rate100%
9 neighbors recently requested a quote
Kazen Custom Heating & Air
4.5(
130
)
Gas Furnace / Forced Air Heating System - RepairElectric Furnace / Forced Air Heating System - RepairHeat Pump - Repair or Service+1 more

Serving Napa, CA and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"I had to call several heating companies only to hear they didn't want to clean old gas floor heaters. Matt did a great job and I would recommend him and will consider an upgrade to another heating option with his company"
Response time8 hrs
9 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Tyndall HVAC Inc.
Tyndall HVAC Inc.
4.4(
23
)
Gas Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+43 more

Serving Napa, CA and surrounding areas

Approved

In business since 2004

Free estimates

Warranties offered

"Vendor was responsive in scheduling visit.  However, they did not show up until about a couple of hours beyond a 2 hour window so ended up waiting for several hours with my tenant.  Was told coupon could not be used because there was malfunction in AC (ended up using coupon at another rental).  Did not fix problem but quoted replacement unit that turned out to be quite high.  Another vendor eventually addressed the issue by cleaning the unit.
"
Peter Tyndall (Owner)
Our Trucks
New unit Installed
Additional Photos
Additional Photos

+5

Response time11 hrs
Response rate100%
12 neighbors recently requested a quote
Jim's Air Systems
4.5(
12
)
Gas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - InstallDucts & Vents - Install or Replace+7 more

Serving Napa, CA and surrounding areas

Approved

In business since 1978

Free estimates

Warranties offered

"I had been using another company and bought an A/C system from them and there were problems. Josh explained the previous company did not install it correctly. He identified and corrected the problems with the previous A/C installation and installed a new A/C system and gas furnace as well. He was very professional, easy to trust, and he did everything he said he was going to do and was on time. The price was reasonable and he is honest and has integrity!"
Response time11 hrs
Response rate100%
64 neighbors recently requested a quote
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Showing 1-10 of 243

FAQs for furnace / forced air heating system install or replace projects in Napa, 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 Napa, 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.