Same-day AC & heating service across Orange County — book online today
New system sizing, transparent pricing, and installation done to code — no guesswork, no pressure.
At a glance
Done once. Done right.
An old furnace doesn’t just get less efficient — it can become a safety risk. A cracked heat exchanger, worn burner assembly, or aging venting system are all reasons homeowners replace rather than repeatedly repair. When it’s time for a new gas furnace, the goal is simple: the right size, installed to code, at a price you understood before agreeing to anything.
Safety disconnection and removal
Code-compliant venting and gas line connection
System testing and safety calibration
Title 24 paperwork
What Drives the Cost of a New Furnace
Installation cost depends on system size, AFUE (Annual Fuel Utilization Efficiency) rating, and whether ductwork needs modification. As a general range, expect $2500– $5000+ depending on whether you choose a standard or high-efficiency unit — we’ll provide a written estimate specific to your home before any work begins.
Standard vs. High-Efficiency: What’s the Difference
Standard (80% AFUE)
Lower upfront cost
Higher monthly energy bills
Standard venting
Best for budget-conscious replacements
High-Efficiency (95%+ AFUE)
Higher upfront cost
Lower monthly energy bills
Often requires a PVC venting upgrade
Best for long-term energy savings
A high-efficiency system costs more upfront but can pay some of that back in lower monthly gas bills over time — we’ll walk you through the real numbers for your specific home and usage.
Sizing It Right
A furnace that’s too big short-cycles and wears out faster; too small and it can’t keep up on the coldest nights. We perform a proper load calculation based on your home’s square footage, insulation, and layout — not a guess based on your old unit’s BTU capacity.
What Happens on Installation Day
Safety disconnection and removal — Your old furnace is safely disconnected and removed
Code-compliant venting and gas line connection — New venting and gas connections installed to current code
System testing and safety calibration — Burner assembly, ignition, and variable-speed blower motor tested and calibrated
Title 24 paperwork — Permit closeout and compliance documentation completed
Rebates and Financing
High-efficiency, ENERGY STAR-certified furnaces may qualify for utility rebates when programs are funded. Federal tax credit rules have changed, so we confirm what is available when we quote. Financing options are available for qualifying installations.
Our Approach
No commissioned salespeople, no pressure to upgrade beyond what your home actually needs. You get a written estimate, a clear explanation of your options, and time to decide.
Areas We Serve
Furnace installation in Irvine, Mission Viejo, Lake Forest, Rancho Santa Margarita, Santa Ana and Laguna Niguel and the rest of Orange County.
Other services
More ways we can help.
From emergency repairs to full system replacements, our licensed Orange County technicians handle every part of your comfort system.
Simple from start to finish
Four steps. Zero stress.
Have a project in mind?
Let’s get it done right.
From quick fixes to bigger improvements, GoTech is ready to help.
Licensed technicians · Upfront pricing · Same-day service