55 Mountain View Ave, Santa Rosa CA 95407 | 24/7 Emergency Service
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Furnace Installation & Replacement — Santa Rosa CA

High-efficiency furnaces sized correctly for your home. Free estimates, same-day installation often available.

New Furnace Installation in Sonoma County

When your furnace is beyond repair or simply too old and inefficient, Action Plumbing, Heating & Air makes the replacement process smooth and stress-free. We assess your home’s heating needs, recommend the right unit, and complete installation to code — usually in a single day.

Why Upgrade Your Furnace?

Our Installation Process

In-Home Assessment

We evaluate your home size, insulation, ductwork condition, and current system to right-size the new unit.

Unit Selection & Quote

We recommend 2–3 options at different price points, explaining efficiency ratings, warranties, and payback periods.

Same-Day or Scheduled Installation

Most replacements complete in 4–8 hours. We haul away your old unit and clean the work area.

Testing & Walkthrough

We run the system through all modes, verify proper operation, and show you how to operate your new thermostat.

Furnace Installation Costs in Santa Rosa

80% AFUE Standard Efficiency$2,500 – $3,800
96% AFUE High Efficiency$3,500 – $5,500
Ductwork Modifications (if needed)$300 – $1,500

PG&E rebates up to $400 available for qualifying high-efficiency units. Free estimates always.

Frequently Asked Questions

What size furnace do I need for my Santa Rosa home?
Furnace sizing is measured in BTUs and depends on your home’s square footage, insulation, ceiling height, and climate. We perform a Manual J load calculation to right-size your system — oversized furnaces short-cycle and are inefficient.
How much does furnace installation cost?
New furnace installation in Santa Rosa typically runs $2,500–$5,500 depending on efficiency (AFUE), brand, and any needed ductwork modifications.
What is AFUE and why does it matter?
AFUE (Annual Fuel Utilization Efficiency) measures how much of the gas burned becomes heat. Standard furnaces are 80% AFUE. High-efficiency units are 90–98% AFUE, saving 10–20% on heating bills.
How long does furnace installation take?
Most furnace replacements take 4–8 hours for a single-family home. You’ll have heat back the same day.
What brands do you install?
We install Carrier, Lennox, Trane, Rheem, Goodman, and other major brands. We’ll recommend the best fit for your home and budget.

Ready for a New Furnace?

Free in-home estimates throughout Sonoma County. We’ll help you choose right.

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