Introduction
Installing a new furnace is one of the most important upgrades you can make for comfort, safety, and efficiency. Understanding the process from sizing and selection to commissioning helps you make confident, cost‑smart decisions.
At Air Plus HVAC, Inc., we combine engineering‑level diagnostics with clear, honest communication so you always know what we’re recommending and why. This guide walks you through choosing the right system, what happens on installation day, and the maintenance that protects your investment.

Choosing the Right Furnace for Your Home
Selecting a furnace starts with your home, not the catalog. We look at square footage, insulation, windows, duct conditions, and your comfort goals to recommend an efficient, code‑compliant match.
Furnace Types
Gas furnaces are common in Los Angeles for their performance and value when gas is available. Electric furnaces suit smaller homes or spaces without gas, though electricity rates and insulation should be considered. Oil furnaces less common in LA require on‑site storage and specialized service, so many homeowners convert to gas or electric when feasible.
Energy Efficiency Ratings (AFUE)
AFUE measures how much fuel becomes usable heat. High‑efficiency (90%+ AFUE) furnaces can lower monthly costs versus older units, especially when paired with tight ductwork and proper airflow.
Sizing and Load Calculations
Oversizing causes short cycling, temperature swings, and wear; undersizing struggles on cold nights. A professional Manual J load calculation and static‑pressure testing ensure the equipment and ducts work together for quiet, even heat.
The Furnace Installation Process Explained
When you choose Air Plus HVAC, Inc., you get a structured, safety‑first process designed for long‑term performance.
- Home Evaluation – We assess your existing system, ducts, gas/electrical, venting, and clearances.
- System Selection – Together we choose capacity, efficiency, and features that match comfort and budget.
- Preparation & Removal – We safely disconnect, remove, and dispose of the old unit in line with regulations.
- Installation & Testing – Precise placement, gas/electrical/vent connections, condensate management, and airflow setup.
- Commissioning – We verify ignition, combustion, temperature rise, static pressure, and safety controls.
- Final Walkthrough – We review operation, thermostat settings, filter sizes, and maintenance best practices.
What to Expect on Installation Day
Most professional installations take one working day depending on access, duct changes, and venting. We protect floors and work areas, keep communication clear, and clean up thoroughly before the final walkthrough.
Before we leave, we confirm even room temperatures, verify proper airflow and combustion, and label filters and shut‑offs. You’ll receive documentation of model numbers, efficiency ratings, and recommended maintenance intervals.
Maintenance Tips After Installation
Routine care keeps your new system efficient and reliable through peak season. Change filters every 1–3 months (more often with pets/renovations) to protect motors and heat exchangers, schedule annual professional tune‑ups to check combustion, safeties, capacitors, and airflow, keep vents and returns clear for balanced heating and lower static pressure, and monitor energy use and sounds to catch issues early report changes promptly.
Did you know?
Neglecting maintenance can erode efficiency over time and increase the chance of after‑hours breakdowns. A consistent plan protects comfort and operating costs.
Smart Care: Ask about Air Plus HVAC’s maintenance program with a 21‑point inspection, biannual tune‑ups, priority scheduling, and service discounts built to prevent surprises and extend equipment life.
FAQs: Furnace Installation in Los Angeles
How long does installation take?
Most projects finish in a single day, with complex duct or vent changes sometimes requiring additional time. We’ll provide a clear schedule and updates throughout.
What does installation typically cost?
Many Los Angeles homeowners invest $3,000–$8,000 for a new furnace with professional installation. Final price depends on efficiency, scope, access, and any duct/vent modifications.
Can I install a furnace myself?
No furnace installs involve gas lines, venting, safety controls, and code compliance that require licensed professionals. DIY work can be dangerous and may void warranties.
How can I prepare my home for installation day?
Clear access to the mechanical area, move fragile items, and secure pets/children away from the workspace. We’ll handle protection, permits, and haul‑away.
What brands do you install?
We recommend reliable, well‑supported brands based on your load, ducts, and budget. Proposals include model numbers and efficiency ratings for easy comparison.
Get Professional Furnace Installation in Los Angeles
Choosing the right partner affects comfort, reliability, and long‑term costs. Air Plus HVAC, Inc. pairs engineering expertise with solution‑focused service and exceptional communication from first measurement to final walkthrough.
Ask about current savings: New system installations may qualify for promotions and financing. Many installs also include a Free 1‑Year Maintenance Plan with New System Installation—ask for details when you schedule.
Ready to upgrade? Contact Air Plus HVAC, Inc. to schedule your furnace installation consultation and enjoy efficient, even heat season after season.