No commissions
Structural honesty
One honest price
No change orders
Family-owned
Never private equity
Bryant FAD
Factory Authorized
Lic. #
467256
Since
1977
Furnace Installation and Furnace Repair, Built Around the Furnace Itself
Furnace installation in Napa comes down to details many quotes skip: the right furnace for your house, venting that fits it, a proper gas connection, and a condensate drain on high-efficiency models. Furnace repair is the same story at the component level, from a worn ignitor to a failed blower. We handle both, and we tell you plainly which one your furnace needs.
Furnace Sized to the House
Matched to your home's actual heating load, not to the old unit.
Component-Level Diagnosis
We find the part that failed, not just the symptom.
Venting and Gas Checked
Flue, gas connection, and drain confirmed before the new furnace goes in.
One Honest Price
One price before work starts, for a repair or a replacement.
Gas Furnace Installation: Choosing the Right Furnace
A gas furnace comes in single-stage, two-stage, and variable-speed models, with efficiency ratings that decide how it vents and drains. We walk you through the options for your house and your budget, and as a Factory Authorized Bryant dealer we install Bryant furnaces. Weighing a furnace against a heat pump? That comparison lives on our heating installation page.
Single-stage, two-stage and variable-speed
How the furnace modulates heat output.
Efficiency rating (AFUE)
What you pay for and what you save
Venting and flue
Matched to the furnace you choose.
Gas line and connections
Checked and connected to suit the new unit.
Condensate drain
Required on high-efficiency models, planned in from the start.
Furnace Replacement: What the Swap Involves
A furnace replacement is more than lifting out the old unit. We remove it, check that the plenum, venting, and gas connection suit the new furnace, set it, connect the thermostat, and run a full heating cycle before we leave. Furnace installation cost depends on the model, the efficiency level, and whether the venting has to change, so we scope the house first and give you one price.
Furnace Repair in Napa: Problems We Fix
Our furnace repair starts at the component that failed, not at the symptom. A technician checks ignition, flame, heat exchanger, blower, and controls, then tells you what failed and what the fix costs. For cold rooms, uneven airflow, or ductwork-related comfort problems, see our heating repair page.
Furnace Not Heating
Usually an ignition, gas, or limit switch problem, or a safety control that has tripped. We trace which one before we replace anything.
Furnace Blowing Cold Air
Often a dirty flame sensor, a failed ignitor, or a tripped limit switch, and sometimes just a thermostat fan setting. Quick to check, and often quick to fix.
Furnace Won't Ignite
A worn ignitor, a gas valve problem, or a blocked vent can keep the burners from lighting. We test each one before recommending a part.
Furnace Short Cycling
A furnace that starts and stops every few minutes often has a dirty flame sensor, restricted airflow, or a limit switch that is overheating. We find the cause and fix it, instead of resetting the furnace and leaving.
Furnace Flame Sensor and Ignitor Replacement
Cleaning or replacing a flame sensor and replacing a worn ignitor are two of the most common furnace repairs. Small parts, big symptoms, and we carry common ones on the truck.
Furnace Heat Exchanger Cracked? What Happens Next
A cracked heat exchanger is a safety issue, not a repair to put off. If we find one, we show you what we see and explain your options.
Stages of Work
How Our Furnace Installation Service Works

Inspect the Furnace
Ignition, flame, heat exchanger, blower, venting, and gas connection are all checked.

Choose the Path
A repair when a part has failed, a replacement when the furnace has reached the end of its life. A written price for either.

Repair or Install
The failed part is replaced, or the new furnace is set, vented, and connected.

Test Fire
A full heating cycle, with flame, airflow, and venting checked before we leave.

Walkthrough
We show you the filter, the thermostat, and what to watch for.
Where we work
Furnace Installation and Repair Across Napa County and the Surrounding Areas
Whether you need furnace installation or furnace repair in Napa, St. Helena, Calistoga, Yountville, or Sonoma, we’re your local furnace company for the whole area, from the city of Napa up the valley and over the hills into Sonoma Valley and Green Valley, for both homes and businesses.
In the valley’s words
Counted on, for fifty years.
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Catherine MorenoTrustindex verifies that the original source of the review is Google.
Excellent service as alwaysPosted on Google![]()
Voni SchaffTrustindex verifies that the original source of the review is Google.
Very professional serviceman … on time and efficient … polite and considerate. I enjoy the service appointments with Reliable Heating and Air. VFSchaffPosted on Google![]()
Cal FalkTrustindex verifies that the original source of the review is Google.
Always good service bt DarrenPosted on Google![]()
Karen RubioTrustindex verifies that the original source of the review is Google.
Very smooth, wonderful work and great execution.Posted on Google![]()
Jenny GassTrustindex verifies that the original source of the review is Google.
Professional, friendly and trustworthy.Posted on Google![]()
Patrick MuleadyTrustindex verifies that the original source of the review is Google.
They are the nicest and most efficient service company. I have worked with in recent memory.Posted on Google![]()
Conley ByrnesTrustindex verifies that the original source of the review is Google.
On time and great working with the service rep!Posted on Google![]()
Bret JohnsonTrustindex verifies that the original source of the review is Google.
Amazingly on target in timing and service diagnostics and repair of the condenser and charging the system. Great experience!Verified by TrustindexTrustindex verified that these reviews were published on Reliable Heating and Air's Google Business Profile. Learn more
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Questions & Answers
Frequently
Asked Questions
Common questions about our services and process. If you don’t find what you’re looking for, call us at 707·252·7227.
Do you offer furnace installation and furnace repair in Napa?
Yes. We install and repair furnaces across Napa, St. Helena, Calistoga, Yountville, and Sonoma. If you are searching for furnace repair near me, we send a technician to your home to check the furnace itself before recommending anything.
Do you install Bryant furnaces?
Yes. We are a Factory Authorized Bryant dealer, and our technicians are trained on Bryant equipment. We help you choose the model that fits your house and your budget.
How much does furnace installation cost?
It depends on the furnace you choose, its efficiency level, and whether the venting, gas connection, or drain needs to change. We scope your home first and give you one price before work starts.
Why is my furnace blowing cold air?
Common causes include a dirty flame sensor, a failed ignitor, a tripped limit switch, or a thermostat fan setting. We check each one and fix the cause, not just the symptom.
Can you replace a flame sensor or ignitor without replacing the furnace?
Yes. Both are small parts, and replacing them is a routine furnace repair. We confirm the rest of the furnace is sound before we call the job done.